RIDGID K9-306 FlexShaft Machine Manuel utilisateur

Model K9-306 FlexShaft™

Drain Cleaning Machine

K9-306 Manual

• Français – 21

• Castellano – pág. 43

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

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Table of Contents

Safety Symbols .................................................................................................................... 2

General Power Tool Safety Warnings

Work Area Safety .............................................................................................................. 2

Electrical Safety ................................................................................................................ 2

Personal Safety ................................................................................................................. 3

Tool Use and Care ............................................................................................................ 3

Service .............................................................................................................................. 4

Specific Safety Information ............................................................................................... 4

FlexShaft™ Drain Cleaning Machine Safety ..................................................................... 4

RIDGID Contact Information ............................................................................................... 5

Description ........................................................................................................................... 5

Specifications ...................................................................................................................... 6

Standard Equipment ......................................................................................................... 6

Pre-Operation Inspection .................................................................................................... 6

Machine and Work Area Set-up .......................................................................................... 7

Installing/Adjusting Chain Knocker ................................................................................... 9

Installing Brushes ............................................................................................................11

Installing Penetrating Head ............................................................................................. 12

Operating Instructions ...................................................................................................... 12

Using Machine With Brushes .......................................................................................... 15

Draining Drum ................................................................................................................ 16

Transportation ................................................................................................................. 16

Storage ............................................................................................................................... 16

Maintenance Instructions ................................................................................................. 16

Cleaning ......................................................................................................................... 17

Lubrication ....................................................................................................................... 17

Cable Re-termination ....................................................................................................... 17

Cable Assembly Replacement ......................................................................................... 17

Motor Brush Inspection/Change .................................................................................... 18

Electronic Torque Limiter/Motor Thermal Overload ......................................................... 18

Troubleshooting .............................................................................................................. 19

Service And Repair ......................................................................................................... 19

Optional Equipment .......................................................................................................... 19

Disposal .............................................................................................................................. 20

EC Declaration of Conformity .................................................................. Inside Back Cover

Lifetime Warranty ................................................................................................. Back Cover

*Original Instructions - English

Model K9-306 FlexShaft™

Drain Cleaning Machine

WARNING!

Read this Operator’s Man ual

carefully before using this

tool. Failure to understand

and follow the contents of

this manual may result in

electrical shock, fire and/or

serious person al injury.

Drain Cleaning Machine

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

2

This symbol indicates the risk of hands,

fingers or other body parts being caught,

wrapped or crushed in the drain cleaning

FlexShaft.

Safety Symbols

In this operator’s manual and on the product, safety symbols and signal words are used to

communicate important safety information. This section is provided to improve understand-

ing of these signal words and symbols.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey

all safety messages that follow this symbol to avoid possible injury or death.

DANGER indicates a hazardous situation which, if not avoided, will result in death

or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could result in death

or serious injury.

CAUTION indicates a hazardous situation which, if not avoided, could result in minor

or moderate injury.

NOTICE indicates information that relates to the protection of property.

sive atmospheres, such as in the pres-

ence of flammable liquids, gases or

dust. Power tools create sparks which

may ignite the dust or fumes.

• Keep children and by-standers away

while a power tool. Distractions can

cause you to lose control.

Electrical Safety

• Power tool plugs must match the outlet.

Never modify the plug in any way. Do

not use any adapter plugs with earthed

(grounded) power tools. Unmodified

plugs and matching outlets will reduce

risk of electric shock.

• Avoid body contact with earthed or

grounded surfaces such as pipes, radi-

ators, ranges and refrigerators. There is

an increased risk of electrical shock if your

body is earthed or grounded.

• Do not expose power tools to rain or

General Power Tool

Safety Warnings*

WARNING

Read all safety warnings, instructions,

illustrations and specifications provided

with this power tool. Failure to follow all

instructions listed below may result in

electric shock, fire and/or serious injury.

SAVE ALL WARNINGS

AND INSTRUCTIONS FOR

FUTURE REFERENCE!

The term “power tool” in the warnings refers

to your mains-operated (corded) power tool or

battery-operated (cordless) power tool.

Work Area Safety

• Keep work area clean and well lit. Clut-

tered or dark areas invite accidents.

• Do not operate power tools in explo-

NOTICE

DANGER

WARNING

CAUTION

This symbol means read the operator’s

manual carefully before using the equip-

ment. The operator’s manual contains im-

portant information on the safe and proper opera-

tion of the equipment.

This symbol means always wear safety

glasses with side shields or goggles while

using this equipment to reduce the risk of

eye injury.

This symbol indicates the risk of the elec-

trical shock.

This symbol indicates the risk of fingers or

other body parts being caught, wrapped,

crushed or struck by the chain knocker.

Do not operate tool with the cable end outside

of the drain.

This symbol means always wear gloves

when handling or using this equipment to

reduce the risk of infections, burns or other

serious personal injury from the drain contents.

This symbol indicates that the marked

equipment exceeds 55 lbs (25kg). Ex-

ercise caution when lifting or moving to

reduce the risk of injury.

*The text used in the general power tool safety warnings section of this manual is verbatim, as required, from the ap-

plicable UL/CSA/EN 62841-1 standard. This section contains general safety practices for many different types of power

tools. Not every precaution applies to every tool, and some do not apply to this tool.

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 3

facilities, ensure these are connected

and properly used. Use of dust collec-

tion can reduce dust-related hazards.

• Do not let familiarity gained from fre-

quent use of tools allow you to become

complacent and ignore tool safety prin-

ciples. A careless action can cause se-

vere injury within a fraction of a second.

Power Tool Use and Care

• Do not force the power tool. Use the

correct tool for your application. The

correct power tool will do the job better

and safer at the rate for which it is de-

signed.

• Do not use the power tool if the switch

does not turn it ON and OFF. Any pow-

er tool that cannot be controlled with the

switch is dangerous and must be re-

paired.

• Disconnect the plug from the pow-

er source and/or remove the battery

pack, if detachable, from the power

tool before making any adjustments,

changing accessories, or storing pow-

er tools. Such preventive safety mea-

sures reduce the risk of starting the power

tool accidentally.

• Store idle tools out of the reach of chil-

dren and do not allow persons unfamil-

iar with the power tool or these instruc-

tions to operate the power tool. Power

tools can be dangerous in the hands of

untrained users.

• Maintain power tools and accessories.

Check for misalignment or binding of

moving parts, breakage of parts and

any other condition that may affect the

power tool’s op er ation. If damaged,

have the power tool repaired before

use. Many accidents are caused by poorly

maintained power tools.

• Keep cutting tools sharp and clean.

Properly maintained cutting tools with

sharp cutting edges are less likely to bind

and are easier to control.

• Use the power tool, accessories and

tool bits etc. in accordance with these

instructions, taking into account the

working conditions and the work to

be performed. Use of the power tool for

operations different from those intended

could result in a hazardous situation.

wet conditions. Water entering a pow-

er tool will increase the risk of electrical

shock.

• Do not abuse the cord. Never use the

cord for carrying, pulling or unplugging

the power tool. Keep cord away from

heat, oil, sharp edges or moving parts.

Damaged or entangled cords increase the

risk of electric shock.

• If operating a power tool in a damp

location is unavoidable, use a ground

fault circuit interrupter (GFCI) protected

supply. Use of a GFCI reduces the risk of

electric shock.

Personal Safety

• Stay alert, watch what you are doing

and use common sense when operat-

ing a power tool. Do not use a power

tool while you are tired or under the

influence of drugs, alcohol, or medica-

tion. A mo

ment of inattention while oper-

ating tools may result in serious personal

injury.

• Use personal protective equipment.

Always wear eye protection. Protective

equipment such as dust mask, non-skid

safety shoes, hard hat, or hearing protec-

tion used for appropriate conditions will

reduce personal injuries.

• Prevent unintentional starting. Ensure

the switch is in the off-position before

connecting to power source and/or

battery pack, picking up or carrying

the tool. Carrying power tools with your

finger on the switch or energizing power

tools that have the switch on invites acci-

dents.

• Remove any adjusting key or wrench

before turning the power tool ON. A

wrench or a key left attached to a rotating

part of the power tool may result in per-

sonal injury.

• Do not overreach. Keep proper footing

and balance at all times. This enables

better control of the tool in unexpected

situations.

• Dress properly. Do not wear loose

clothing or jewelry. Keep your hair,

clothing and gloves away from moving

parts. Loose clothes, jewelry or long hair

can be caught in moving parts.

• If devices are provided for the connec-

tion of dust extraction and collection

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

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• One person must control both the ca-

ble and the switch. If the cutter stops

rotating, the operator must be able to turn

the tool OFF to prevent the cable from

twisting, kinking and breaking.

• Use latex or rubber gloves inside the

gloves recommended by the manufac-

turer, goggles, face shields, protective

clothing, and respirator when chem-

icals, bacteria or other toxic or infec-

tious substances are suspected to be

in a drain line. Drains may contain chem-

icals, bacteria and other substances that

may cause burns, be toxic or infectious

or may result in other serious personal

injury.

• Practice good hygiene. Do not eat or

smoke while handling or operating the

tool. After handling or operating drain

cleaning equipment, use hot, soapy

water to wash hands and other body

parts exposed to drain contents. This

will help reduce the risk of health hazards

due to exposure to toxic or infectious ma-

terial.

• Only use the Drain Cleaning Machine

for the recommended drain sizes. Us-

ing the wrong size drain cleaner can lead

to twisting, kinking or breaking of the cable

and may result in personal injury.

• Keep glove covered hand on the cable

assembly whenever the FlexShaft Ma-

chine is running. This provides better

control of the cable and helps prevent

twisting, kinking and breaking of the cable

and reduces the risk of injury.

• Position machine cable outlet within

4' (1.2 m) of the drain inlet or properly

support exposed cable assembly when

the distance exceeds 4' (1.2 m). Greater

distances can cause control problems lead-

ing to twisting, kinking or breaking of the

cable. Twisting, kinking or breaking cable

may cause striking or crushing injuries.

• Do not wear loose clothing or jewelry.

Keep your hair and clothing away from

moving parts. Loose clothing, jewelry or

hair can be caught in moving parts.

• Do not operate this machine if oper-

ator or machine is standing in water.

Operating machine while in water increas-

es the risk of electrical shock.

• Do not use if there is the risk of con-

tact with other utilities (such as natural

gas or electric) during operation. Visual

• Keep handles and grasping surfaces

dry, clean and free from oil and grease.

Slippery handles and grasping surfaces

do not allow for safe handling and control

of the tool in unexpected situations.

Service

• Have your power tool serviced by a

qualified repair person using only iden-

tical replacement parts. This will ensure

that the safety of the power tool is main-

tained.

Specific Safety

Information

WARNING

This section contains important safety

information that is specific to this tool.

Read these precautions carefully be-

fore using the FlexShaft™ Drain Cleaning

Machine to reduce the risk of electrical

shock or other serious injury.

SAVE ALL WARNINGS

AND INSTRUCTIONS FOR

FUTURE REFERENCE!

Keep this manual with machine for use by

the operator.

FlexShaft™ Drain Cleaning

Machine Safety

• Before using the tool, test the ground

fault circuit interrupter (GFCI) provided

with the power supply cord to insure it

is operating correctly. A properly oper-

ating GFCI reduces the risk of electrical

shock.

• Only use extension cords that are pro-

tected by a GFCI. The GFCI on the ma-

chine power cord will not prevent electrical

shock from extension cords.

• Only grasp the rotating cable with

gloves recommended by the manu-

facturer. Latex or loose fitting gloves or

rags can become wrapped around the

cable and may result in serious personal

injury.

• Do not allow the cutter to stop turn-

ing while the cable is turning. This can

overstress the cable and may cause twist-

ing, kinking or breaking of the cable and

may result in serious personal injury.

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 5

Figure 1A – RIDGID® FlexShaft Drain

Cleaning Machine

Figure 1B –

RIDGID® FlexShaft Drain

Cleaning Machine

Figure 1C –

Cable End/Chain Knocker

inspection of the drain with a camera is

a good practice. Crossbores, improperly

placed utilities and damaged drains could

allow the chain knocker to contact and

damage the utility. This could cause elec-

trical shock, gas leaks, fire, explosion or

other serious damage or injury.

• Read and understand these instruc-

tions and the instructions and warn-

ings for all equipment and materials

being used before operating this tool

to reduce the risk of serious personal

injury.

RIDGID Contact

Information

If you have any question concerning this

RIDGID® product:

– Contact your local RIDGID distributor.

– Visit RIDGID.com to find your local

RIDGID contact point.

– Contact Ridge Tool Technical Service De-

part ment at ProToolsTechService@Emer-

son.com, or in the U.S. and Canada call

844-789-8665.

Description

The RIDGID® Model K9-306 FlexShaft™ Drain

Cleaning Machine is designed to clean and

descale 3" to 6" (75-150 mm) pipes and drain

lines, up to 125' (38 m) in length.

A REV/O-OFF/FOR switch controls cable rota-

tion and a pneumatic foot switch provides ON/

OFF control of the motor. An integral Ground

Fault Circuit Interrupter (GFCI) is built into the

line cord.

The cable assembly is manually fed in and

out of the drain and rotates at 2000 RPM. A

chain knocker that expands to the pipe inside

diameter is used to break up the blockage and

clean the walls of the pipe. Chain knockers

with carbide cutting tips are available for use

on roots and cleaning the scale from the pipe

wall. Plain chain knockers are for general use,

including grease. The machine is equipped

with an electronic torque limiter ro reduce the

likelihood of cable damage.

FlexShaft Drain Cleaners are well suited to

use with inspection cameras during the drain

cleaning process.

It is not recommended to clean glass, ceramic,

porcelain or similar fixtures with the FlexShaft

Drain Cleaners as it may damage the fixture.

Telescoping Handle Loading

Wheels

Handle

Latch

Cart Frame

Warning &

Operation

Label

Cable

Chain

Knocker

Cable

Bushing

Wheel

Serial

Number

Plate

Stair

Climber

Foot

(Horizontal-

Use Position) Loading Handle

Cord

Wrap

Cord/GFCI

Foot

Switch

Chain

Knocker

Clamp

Knocker Bushing

Electronic

Torque Limiter

LED

REV/O-OFF/FOR

Switch

Front

Cover

Drain

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

6

This machine is made to clean

drains. If properly used it will not damage a

drain that is in good condition and properly

designed, constructed and maintained. If the

drain is in poor condition, or has not been

properly designed, constructed and main-

tained, the drain cleaning process may not be

effective or could cause damage to the drain.

The best way to determine the condition of

a drain before cleaning is through visual in-

spection with a camera. Improper use of this

drain cleaning machine can damage the drain

cleaning machine and the drain. This machine

may not clear all blockages.

Pre-Operation Inspection

WARNING

Before each use, inspect your Drain

Cleaning Machine and correct any prob-

lems to reduce the risk of serious injury

from electric shock, twisted or broken

cables, chemical burns, infections and

other causes and prevent Drain Cleaning

Machine damage.

Always wear safety glasses, and other

appropriate protective equipment when

inspecting your Drain Cleaning Machine.

1. Make sure that the drain cleaning ma-

chine is unplugged and inspect the pow-

er cord, Ground Fault Circuit Interrupter

(GFCI) and plug for damage. If the plug

has been modified, or if the cord is dam-

aged, to avoid electrical shock, do not

use the machine until the cord has been

replaced by a qualified repair person.

2. Clean the machine, including handles

and controls. This aids inspection and

helps prevent the machine or control

from slipping from your grip. Clean and

maintain the machine per the mainte-

nance instructions.

3. Inspect the machine for:

•

Proper assembly and completeness.

• Any broken, worn, missing, misaligned

or binding parts.

• Presence and readability of the warning

label (see Figure 3).

Figure 2 – Machine Serial Number

Serial number plate is located on cart side

of housing. (See Figure 1A) The last 4 digits

indicate the month (MM) and year (YY) of

manufacture.

Specifications

Drain Capacity

(Nom.) ...................3" to 6" (75 – 150 mm)

Cable Diameter

(without Sheath) .....3/8" (9.5 mm)

Cable Assy. Diameter

(with Sheath) ......... 5/8" (15.9 mm)

Cable Assembly

Length ................... 125' (38.1 m)

Motor

Power ....... 1

.1 kW (1.5 HP) 1

.1 kW (1.5 HP)

Voltage ..... 110-120V 220-240V

Current ..... 11A 8A

Refer to on product serial plate for information specific to unit.

Rotational Speed ...2000 RPM

Weight ....................166 lbs. (75 kg)

Dimension .............. 36.1" × 32.5" × 20.5"

(918 mm × 826 mm ×

521 mm) Handle down

Operating

Temperature ........... 20°F to 140°F

(-6°C to 60°C)

Sound Pressure

(LPA)* ......................96.1 dB(A), K=3

Sound Power

(LPW)* .....................91.8 dB(A), K=3

* Sound measurements are measured in accordance

with a standardized test per Standard EN 62481-1.

.-

Sound emissions may vary due to your location and

specific use of these tools.

. - Daily exposure levels for sound need to be evaluated

for each application and appropriate safety measures

taken when needed. Evaluation of exposure levels

should consider the time a tool is switched off and not

in use. This may significantly reduce the exposure level

over the total working period.

Standard Equipment

Refer to the RIDGID catalog for details on e-

quipment supplied with specific drain cleaning

machine catalog numbers.

XXXXXXXXMMYY

NOTICE

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 7

Machine and Work Area

Set-up

WARNING

Set up the Drain Cleaning Machine and

work area according to these proce-

dures to reduce the risk of injury from

electric shock, fire, machine tipping,

twisted or broken cables, chemical

burns, infections and other causes, and

prevent machine damage.

Always wear safety glasses and other

appropriate protective equipment when

setting up your Drain Cleaning Machine.

1. Check for an appropriate work area.

Operate in a clear level, stable, dry lo-

cation. Do not use the Drain Cleaning

Machine while standing in water.

2. Inspect the drain to be cleaned. If possi-

ble, determine the access point(s) to the

drain, the size(s), length(s), and materi-

al(s) of the drain, distance to mainlines,

the nature of the blockage, presence of

drain cleaning chemicals or other chem-

icals, etc.

If chemicals are present in the drain, it

is important to understand the specific

safety measures required to work around

those chemicals. Contact the chemical

manufacturer for required information.

Confirm no other utilities are present in

the drain or area to reduce the risk of

damage. Visual inspection of the drain

with a camera is a good practice.

If needed, remove fixture (water closet,

etc.) to allow access to drain. Do not run

the chain knocker in a fixture. This could

damage the FlexShaft Machine or the

fixture.

3. Determine the correct equipment for the

application. See Specifications. Drain

Cleaning Machines for other applications

can be found by consulting the Ridge

Tool Catalog, online at RIDGID.com.

4. Make sure all equipment has been prop-

erly inspected.

5. If needed, place protective covers in the

work area. The drain cleaning process

can be messy.

Figure 3 – Warning Label

• Smooth and free movement of the ca-

ble assembly in and out of the machine.

• Any condition which may prevent safe

and normal operation.

If any problems are found, do not use the

drain cleaning machine until the prob-

lems have been repaired.

4. Clean any debris from the cable assem-

bly and chain knockers. Inspect sheath

for wear and damage. There should not

be any cuts, kinks, breaks or excessive

wear. Inspect the cable near the chain

knocker. Cable assemblies should not be

bent or deformed. Cable strands should

be tight to one another without separa-

tion. Inspect chain knocker for damaged

or lost carbide cutting tips (if equipped)

and wear of the chain itself. If chain links

are worn more than ¼ through or dam-

aged, replace the chain knocker. Replace

worn and damaged equipment before

using drain cleaning machine.

Confirm that the chain knocker is proper-

ly set up and is secure on the cable.

5. Inspect and maintain any other equip-

ment being used per its instructions to

make sure it is functioning properly.

6. Make sure that the REV/O-OFF/FOR

switch is set to the O-OFF position.

7

. With dry hands, plug cord into properly

grounded outlet. Test the GFCI provided

in the electrical cord to ensure that it is

operating correctly. Depress the GFCI

TEST button -the machine should not op-

erate. Depress the RESET button – the

machine should operate. If GFCI is not

functioning properly, unplug the cord and

do not use the drain cleaning machine

until the GFCI has been repaired.

8. With the inspection complete, with dry

hands, unplug the machine.

RIDGID.com

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

8

Figure 5 – Example of Extending Drain Access to

within 4' (1.2 m) of Machine Cable Outlet

9. Unclamp the chain knocker and pull ap-

proximately 5' (1.5 m) of cable assembly

out of the machine.

10. Mark the sheath to indicate when the

chain knocker is approaching the drain

opening when withdrawn. This can be

done with tape. This reduces the risk of

the chain knockers coming out of the

drain and whipping around. The distance

depends on the configuration of the drain,

but should be at least 5' (1.5 m) from the

chain knocker.

11. Ensure chain knocker is properly installed

(see Installing/Adjusting Chain Knocker).

12. Insert chain knocker end at least 1' (0.3 m)

into drain.

13. Evaluate the work area and determine if

any barriers are needed to keep bystand-

ers away from the drain cleaning ma-

chine and work area. The drain cleaning

process can be messy, and bystanders

can distract the operator.

14. Position the foot switch for easy accessi-

bility. You must be able to hold and con-

trol the cable, control the foot switch, and

reach the REV/O-OFF/FOR switch.

15. Confirm that the REV/O-OFF/FOR switch

is in the O-OFF position.

16. Run the cord along a clear path. With

dry hands, plug the drain cleaner into a

properly grounded outlet. Some GFCIs

may need to be reset every time they are

plugged in. Reset GFCI if needed. Keep

all connections dry and off the ground. If

the power cord is not long enough, use

an extension cord that:

6. Transport the drain cleaning machine to

the work area along a clear path. Adjust

handle if necessary (Figure 4). Move han-

dle latches together and move telescop-

ing handle to desired position. Confirm

that the handle latches engage and the

handle is securely held in position. If han-

dle is moved past latch holes, the handle

buttons will prevent the handle from pull-

ing out. If this occurs, depress buttons to

move handle.

Figure 4 – Adjusting Telescoping Handle

7. Place the Drain Cleaning Machine as

shown in Figure 5. Machine should sit

squarely and firmly on the ground.

8. Position the Drain Cleaning Machine so

that the cable outlet is within 4' (1.2 m) of

the drain access. Greater distances from

the drain access increases the risk of the

cable assembly twisting or kinking. If the

FlexShaft Machine cannot be placed with

the cable outlet within 4' (1.2 m) of the

drain access, extend the drain access

with similar sized pipe and fittings (see

Figure 5). Improper cable assembly sup-

port can allow the cable to kink and twist

and can damage the cable or injure the

operator. Extending the drain back to the

Drain Cleaning Machine also makes it

easier to feed cable assembly into drain.

Handle Latches

Telescoping Handle

Handle Button

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 9

• Is in good condition.

•

Has a plug similar to that supplied on

the drain cleaner.

•

Is rated for outdoor use and contains

a W or W-A in the cord designation

(i.e. SOW), or complies with H05VV-F,

H05RN-F types or IEC type design

(60227 IEC 53, 60245 IEC 57).

• Has sufficient wire size. For extension

cords up to 50' (15,2 m) long use 16

AWG (1,5 mm2) or heavier. For exten-

sion cords 50'-100' (15,2 m – 30,5 m)

long use 14 AWG (2,5 mm2) or heavier.

When using an extension cord, the GFCI

on the drain cleaner does not protect the

extension cord. If the outlet is not GFCI

protected, it is advisable to use a plug

in type GFCI between the outlet and

the extension cord to reduce the risk of

shock if there is a fault in the extension

cord.

17.

Move the REV/O-OFF/FOR Switch to

the O-OFF position, and with dry hands

unplug the machine.

Installing/Adjusting Chain

Knocker

1. Select proper chain knocker for the con-

ditions.

Chain knockers are sized based on col-

lar inside diameter and are designed for

specific cable sizes. 3/8" chain knockers

are used on 3/8" cable, etc. Do not use

a larger size chain knocker on a smaller

cable (for instance 1/2" on 3/8"). See Fi-

gure 6 and Collar Distance Chart.

Chain knockers without carbide cutting

tips can be used in common pipe types.

These chain knockers work well in grease

and similar blockages.

Chain knockers with carbide cutting tips

are used for removing scale from the

inside of the pipe and can be used for

roots. Carbide cutting tips are used for

aggressive cleaning and could damage

pipe, especially softer materials (such

as plastics and Orangeburg), thin walled

pipe, or if the chain knocker is kept in one

position for an extended time.

Do not use chain knockers for cleaning in

glass, ceramic, porcelain or similar ma-

terial fixtures or pipes. They could be

damaged.

2. Figure 7 shows a schematic of proper

chain knocker installation and adjustment.

There are two key points when installing/

adjusting chain knockers.

Collar Distance: Set the chain knocker

collars the correct distance apart (“Collar

Distance”) to allow the chains to spread

an appropriate amount when rotated to

clean the pipe walls. Collar Distance var-

ies based on cable size and pipe diam-

eter, and is generally set using a spacer

made from sheath (“Collar Spacer”). If

additional flexibility is required to navigate

a bend, the collar spacer can be removed

and the collar distance can be set with a

tape measure. Operating without a collar

spacer makes it more likely for the cable

to flip over in use and be damaged. Do

not operate carbide cutters without a

collar spacer to reduce risk of cable

damage.

Exposed Cable: Minimize the amount

of exposed cable (cable not covered by

sheath). The more exposed cable there

is, the more likely the cable will flip over

in use and be damaged. Exposed cable

should be limited to no more than ¼" (6

mm), and is set with a bushing made from

sheath (“Knocker Bushing”).

Sheath is supplied with the drain cleaner

and is available as a service part to allow

configuration as needed for your specific

application. Only use RIDGID FlexShaft

Drain Cleaner sheath of the correct size

for the cable. Any time sheath is cut, it

should be cut cleanly and squarely. Do

not damage the cable when cutting the

sheath.

3. Chain knockers are retained to the cable

with set screws that use a supplied 3 mm

hex key. Loosen set screws and remove

chain knocker, spacer and bushing from

cable.

4. With no knocker installed, hold cable end

away from your body or others. Run ma-

chine in REVERSE for 5 seconds to max-

imize exposed cable. Place switch in

O-OFF position and unplug machine.

Hold sheath and pull on cable to remove

slack and expose maximum amount of

cable.

5. Inspect the sheath end for damage or

wear. The sheath end should be square

and clean. If needed, the sheath end can

be trimmed slightly.

6. If needed, cut a section of sheath to use

as the collar spacer to the appropriate

size (See Collar Distance Chart).

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

10

Figure 6 – Chain Knocker Selection Chart

K9-306 MACHINE

CATALOG NO. 66618 66623 66628 66633 66638 66643 66648 66653 66658

DESCRIPTION K9-306

3"

K9-306

4"

K9-306

6"

K9-306

3" CARBIDE

K9-306

4" CARBIDE

K9-306

6" CARBIDE

K9-306 - 3"

PENETRATING

HEAD

K9-306 - 4"

PENETRATING

HEAD

K9-306 - 6"

PENETRATING

HEAD

PIPE SIZE 3"

(75 mm)

4"

(105 mm)

5"- 6"

(125-150

mm)

3"

(75 mm)

4"

(105 mm)

5"- 6"

(125-150

mm)

3"

(70 mm)

4"

(100 mm)

5"- 6"

(125-150

mm)

COPPER

GALVANIZED

CAST IRON

PVC

ABS

ORANGEBURG

CORRUGATED

CLAY

GREASE

SOFT

BLOCKAGE

SCALING

ROOTS

WIPES

INCLUDED

WITH KIT

BLOCKAGE PIPE TYPE

Chain Knockers Penetrating Head

Chain Knockers

Carbide Tipped Chain Knockers

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 11

as cleaning the inside of the pipe, centering

the chain knocker in the pipe and spreading

lining compound. See the specific brush infor-

mation for the types of uses it is appropriate

for.

Brushes can be assembled in a variety of

configurations, with some options shown in

Figure 8.

Figure 8 – Example Brush Configurations

Collar distance can be modified to your

preference for the specific pipe/applica-

tion. As collar distance increases, the di-

ameter of the chains decreases, and vice

versa. Improperly set collar distance can

reduce the efficiency of pipe cleaning.

7. Test fit the chain knocker, knocker bushing

and collar spacer on the cable as shown

in Figure 7. Chains should be straight – do

not assemble with chains twisted. To pre-

vent excessive cable end wear, cable end

should be flush with the end of the collar.

Check length of exposed cable. To reduce

the risk of cable flip over and damage,

exposed cable cannot exceed ¼" (6 mm).

If needed, cut a knocker bushing from

sheath to limit exposed cable. Always

use a knocker bushing to reduce wear

on the sheath end.

8. With the chain knocker correctly installed

on the cable as shown in Figure 7, use

the supplied hex wrench to securely tight-

en the collar set screws. If the set screws

are not secure, the chain knocker could

slip and damage the cable or be lost

down the drain.

Installing Brushes

Brushes are available for various uses, such

Collar Distance Chart

Knocker

Figure 7 – Chain Knocker Installation/Adjustment

Sheath End

Collar Spacer

Cable

Set Scew

(3 mm HEX)

Sheath

Collar Distance

Knocker Collar

Knocker Chain

Cable End

Flush To

Collar

Carbide Cutting Tip

(If Equipped)

Knocker Bushing Knocker Collar

Set Scew

(3 mm HEX)

Exposed Cable

.25" (6.35 mm)

Maximum

Machine Cable Number Number of Nominal Recommended Collar

Size of Chains Links/Chain Pipe Size Distance

K9-306 3/8"

3 11 3" (75 mm) 4" (102 mm)

3 13 4" (100 mm) 41/2" (114 mm)

3 17 6" (150 mm) 5" (127 mm)

CATALOG NO. 66618 66623 66628 66633 66638 66643 66648 66653 66658

DESCRIPTION K9-306

3"

K9-306

4"

K9-306

6"

K9-306

3" CARBIDE

K9-306

4" CARBIDE

K9-306

6" CARBIDE

K9-306 - 3"

PENETRATING

HEAD

K9-306 - 4"

PENETRATING

HEAD

K9-306 - 6"

PENETRATING

HEAD

PIPE SIZE 3"

(75 mm)

4"

(105 mm)

5"- 6"

(125-150

mm)

3"

(75 mm)

4"

(105 mm)

5"- 6"

(125-150

mm)

3"

(70 mm)

4"

(100 mm)

5"- 6"

(125-150

mm)

COPPER

GALVANIZED

CAST IRON

PVC

ABS

ORANGEBURG

CORRUGATED

CLAY

GREASE

SOFT

BLOCKAGE

SCALING

ROOTS

WIPES

INCLUDED

WITH KIT

Brush Only Brush with Securing

Ring

Centering Guide

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

12

Installation of brushes is similar to the instal-

lation of chain knockers. The collar of the

brush is placed over the cable and retained

by securely tightening the set screws. When

at the end of the cable, the cable end is flush

with the brush collar. Brush securing rings

are available to improve brush retention if set

screws loosen in use.

As with chain knockers, minimize the amount

of exposed cable (cable not covered by

sheath). The more exposed cable there is, the

more likely the cable will flip over in use and

be damaged. Limit exposed cable to no more

than ¼" (6 mm), set with a bushing made from

sheath (“Knocker Bushing”).

Installing Penetrating Head

Penetrating heads are available to help create

a hole in a blockage to get the drain flowing

and allow the chain knocker into an area. See

Figure 9 for installation information.

Figure 9 – Penetrating Head Installation

Operating Instructions

WARNING

Always use safety glasses and gloves in good

condition while handling or using. Use latex or

rubber gloves, face shields, protective clothing,

respirators or other appropriate protective equip-

ment when chemicals, bacteria or other toxic or

infectious substances are suspected to be present

to reduce the risk of infections, burns or other

serious personal injury.

Do not allow the chain knocker/end of cable to

stop turning while cable assembly is turning.

This can overstress the cable and may cause

twisting, kinking or breaking of the cable assembly

and may result in serious personal injury.

Keep a hand on the cable assembly whenever

the FlexShaft Machine is running. This provides

better control of the cable and helps prevent twist-

ing, kinking and breaking of the cable and reduces

the risk of injury.

Position the FlexShaft Machine cable outlet

within 4' (1.2 m) of the drain inlet or properly

support exposed cable assembly when the dis-

tance exceeds 4' (1.2 m). Greater distances can

cause control problems leading to twisting, kinking

or breaking of the cable. Twisting, kinking or break-

ing cable may cause striking or crushing injuries.

One person must control both the cable as-

sembly and foot switch. If the cable stops rotat-

ing, the operator must be able to turn the tool OFF

to prevent twisting, kinking and breaking of the

cable and reduce the risk of injury.

Follow operating instructions to reduce the

risk of injury from twisted or broken cable,

cable ends whipping around, machine tipping,

chemical burns, infections and other causes.

1. Make sure that machine and work area is

properly set-up and that the work area is

free of bystanders and other distractions.

2. Pull cable assembly from the machine

and feed into drain. At least 1' (0.3 m) of

cable must be in drain so that the chain

knocker will not come out of the drain and

whip around when the machine is started.

Directly route the cable assembly from

the machine cable outlet to the drain

opening, minimizing exposed cable and

changes in direction. Do not tightly bend

the cable assembly – this can increase

the risk of twisting or breaking.

If using a camera to view the drain clean-

ing process, the camera can be fed in

at the same time. Typically the cable as-

sembly and the camera push rod can be

gripped and advanced/retrieved at the

same time. Keep the camera at least 1.5’

( 0.5 m) behind the chain knocker.

Do not allow the spinning chain

knocker to hit the camera head/push rod.

It can damage it.

3. Assume a proper operating position to

help maintain control of the cable assem-

bly and machine (see Figure 10):

•

Be sure you can quickly release the

foot switch.

•

Your gloved hands must be on the ca-

ble assembly to control and support as

the cable assembly is fed into the drain

and blockage.

Collar

Fully Insert

Securely Tighten

Set Screws

1/4" (6mm) MAX.

NOTICE

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 13

• Be sure that you have good balance, do

not have to overreach, and cannot fall

on machine, drain, etc.

•

Y

ou must be able to reach the REV/O-

OFF/FOR switch.

This operating position will help to main-

tain control of the cable assembly and

FlexShaft Machine.

Figure 10 – In Operating Position

4. Confirm that at least 1' (0.3 m) of cable

assembly is in the drain.

5. Grasp the exposed cable assembly with

both gloved hands equally spaced and

pull 6"-12" (150mm - 300mm) of cable

out of the drum so that there is a slight

bow in the cable. Gloved hands must be

on the cable to control and support the

cable. Improper cable support can allow

the cable to kink or twist and can damage

the cable or injure the operator. Make sure

that the cable outlet of the drain cleaner

is within 4' (1.2 m) of the drain opening

(Figure 10).

6. Move the REV/O-OFF/FOR switch to

FOR (Forward) position.

7. Depress the foot switch to start the ma-

chine. There will be a slight delay be-

fore the cable starts to rotate. The person

controlling the cable must also control

the foot switch. Do not operate the drain

cleaner with one person controlling the

cable and another person controlling the

foot switch. This can lead to twisting, kink-

ing and breaking of the cable.

8. The FlexShaft Drain Cleaning Machine uti-

lizes high rotational speed and low torque

to clean drains. FlexShaft cable assem-

blies are more flexible than other types

of drain cleaning cables. The FlexShaft

machine is best used by applying light

pressure and slowly working the chain

knocker into the blockage. It’s important

to let the speed of the chain knocker

clean the drain – do not force chain

knockers into blockages.

9. Advancing/Retrieving the Cable

Assembly – FlexShaft Lubricant

In some cases it may be beneficial to

apply RIDGID FlexShaft lubricant to the

outside of the sheath when feeding the

cable down the drain. This can make it

easier to advance the cable assembly

down the drain and allow greater clean-

ing distance. If doing so, place a clean

towel with lubricant on it in the palm of the

gloved hand used for advancing the cable

assembly, and apply lubricant as feed-

ing the cable assembly (Figure 11). Add

lubricant to the towel as needed during

the process. RIDGID FlexShaft markings

are printed on the sheath every 5' (1.5 m)

to aid in determining how much cable

assembly has been fed from the machine.

Only use RIDGID FlexShaft lubricant.

Other lubricants may not be appropriate

for use in a drain and could contaminate

the water.

When retrieving the cable assembly, it is

good practice to use a towel to wipe dirt

and debris from the cable sheath as it is

pulled from the drain and fed back into

the drum.

10. Rotating the Chain Knocker

Generally the chain knocker is rotated for

cleaning while withdrawing the cable.

Only rotate the cable/chain knocker when

the chain knocker is at least 1' in the

drain. To rotate the cable, firmly grip the

cable and depress the foot switch. The

person controlling the cable assembly

must also control the foot switch. Do not

operate the machine with one person

controlling the cable assembly and an-

other person controlling the foot switch.

Do not allow cable assembly to build up

outside the drain, bow or curve. This can

lead to twisting, kinking and breaking of

the cable. At any time, release the foot

switch to stop cable rotation. When clear-

ing blockages, operate the cable at full

speed for best cleaning. Do not force the

chain knocker into blockages. Rotating

the chain knocker in FORWARD or RE-

4' (1.2 m) MAX.

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

14

VERSE for a short time while advancing

the cable assembly can help it negotiate

the drain and blockages.

Figure 11 – Applying Lubricant to the Cable

Sheath

11. Advance the cable assembly into the

drain, generally not rotating. Grasp the

sheath near where it exits the machine

housing. Pull 6" to 12" (150 to 300 mm)

of cable assembly out of the FlexShaft

Machine so that there is a slight bow in

the cable. Gloved hand must be on cable

assembly to control and support. Improper

cable support can allow the cable as-

sembly to kink or twist and can damage

the cable or injure the operator. Feed the

cable assembly into the drain (Figure 12,

Step 1).

12. Continue to advance the cable assem-

bly until the resistance is encountered.

Carefully work the chain knocker through

the blockage. Do not force the cable as-

sembly – if the chain knocker cannot

turn, it cannot clean the drain. Pay at-

tention to how far the cable has gone. Do

not overrun the cable into a larger drain.

This can cause the cable to knot up or

cause other damage (Figure 12, Step 2).

13. Once the drain is open, if possible, start a

flow of water down the drain to flush the

debris out of the line and help clean the

cable assembly as it is retrieved. This can

be done by turning on a faucet in the sys-

tem or other methods. Pay attention to the

water level, as the drain could plug again

(Figure 12, Step 3).

14. With the chain knocker past the block-

age/area to be cleaned and REV/O-OFF/

FOR switch in FOR position, depress the

The general operating steps for the FlexShaft Drain Cleaning Machines (see below):

1

3

2

4

5

6

1. Advance the chain knocker (generally not

rotating) to the area of the drain that needs

cleaned.

2. If there is a blockage, pass the chain knock-

er through the blockage.

3. If possible, start a flow of water through the

drain to carry cuttings and debris away as

the drain is cleaned.

4. Rotate the cable/chain knocker at full speed.

5. Continue to rotate knocker. Gradually with-

draw the cable assembly so that the chain

knocker can break up the blockage.

6. Continue to gradually withdraw the cable

assembly while rotating so that the chain

knocker can clean the walls of the drain.

Figure 12 – General Operating Steps

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 15

foot switch to rotate the chain knocker.

Slowly pull the cable assembly from the

drain, allowing the rotating chain knocker

to clean the drain walls and break up the

blockage (Figure 12, Steps 4 & 5). If the

cable stops turning, do not continue

operating the machine. This may cause

the cable to twist and kink. At any time, re-

lease the foot switch to stop cable rotation.

Rotating the cable in REVERSE can help

clean the opposite side of the pipe.

Monitor the feedback from the feel of the

cable assembly in your hand and the

sound of the motor/knocker in the drain.

It may be necessary to move the chain

knocker out of the blockage to allow it to

come back up to speed.

If the chain knocker becomes stuck, the

electronic torque limiter will shut off the

motor to reduce the likelihood of cable

damage. The torque limiter LED will flash

to indicate this. Release the foot switch to

allow motor to restart. Place the REV/O-

OFF/FOR switch to allow opposite ro-

tation. Grasp the cable with both gloved

hands, press the foot switch for several

seconds and pull on the cable until it is

free of the blockage. Repeat if necessary.

In some cases, it may be possible to pull

the cable assembly and the blockage out

of the drain by hand. If this is done, be

careful to not damage the cable assembly.

Place the REV/O-OFF/FOR switch in the

FOR position and continue cleaning the

drain.

Do not allow the spinning chain

knocker to hit the camera head/push rod.

It can damage it.

15. Continue to clean the rest of the drain

while retrieving the cable. Once the drain

has been cleaned, retrieve the cable and

feed back onto the drain cleaning ma-

chine. Pay close attention, as the cable

may lodge in a blockage while being re-

tracted (Figure 12, Step 6).

16. Watch for your sheath marking as the

cable assembly is retrieved. Release

the foot switch when the chain knocker

nears drain opening. Do not pull the chain

knocker from drain while it is rotating. The

chain knocker can whip around and could

cause serious injury.

17. If needed for complete cleaning, repeat

the above procedure.

18. Pull any remaining cable assembly from

the line by hand and push back into the

drum. Prepare the machine for transport.

Using Machine With Brushes

Using the machine with a brush is similar to

use with a chain knocker. Brushes are used

for finer cleaning of the pipe, they are not

used for blockage removal. Remove block-

ages and heavy debris with a chain knocker

or other methods first. While chain knockers

are most typically rotated while withdrawing

the cable from the drain, brushes are typi-

cally used while advancing the cable. This

is because the brushes typically fill the drain

diameter and push debris in front of them.

See Figure 13 for general steps.

Brushes can also be used in conjunction with

chain knockers such as centering devices

or for combined cleaning. Usage depends

on the exact circumstances and is left to the

judgment of the user.

NOTICE

1

1. Advance the brush (generally not rotating)

into the drain.

2. When the area to be cleaned is reached, if

possible, start a flow of water through the

drain to carry debris away during cleaning.

3.

Rotate the cable/brush at full speed and

gradually advance the cable into the drain

to clean the walls as desired.

Figure 13 – Cleaning Drain Walls With Brush

2

3

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

16

Draining Drum

Open drain plug (Figure 14). Lean the ma-

chine back into the wheels and allow to drain.

Close plug when finished.

Figure 14 – Drain Plug

Transportation

Feed all of cable assembly into the drum and

secure the chain knocker with the clamp.

Wrap cord and foot switch hose around the

cord wrap. See Figure 15. Before moving the

machine, make sure that the telescoping

handle is secured into the extended position

for transport. If the machine needs to be

lifted, use proper lifting techniques. Use care

moving equipment on stairs, and be aware of

possible slip hazards.

Figure 15 – Preparing for Transport

Loading

With the telescoping handle locked into

the extended position, place machine with

wheels toward the vehicle. Lean the machine

back and rest the loading wheels on the ve-

hicle bed. Use loading handles (Figure 16) to

lift the machine and slide it onto the vehicle

(Figure 17). Be aware of the machine weight.

Use proper lifting techniques – more than

one person may be required.

Figure 16 – One Transport Method

Figure 17 – Lifting Unit Onto Vehicle

Storage

The Drain Cleaning Machine

must be kept dry and indoors or well cov-

ered if kept outdoors. Store the machine in

a locked area that is out of reach of children

and people unfamiliar with drain cleaning

machines. This machine can cause serious

injury in the hands of untrained users.

Maintenance

Instructions

WARNING

REV/O-OFF/FOR switch should be O-OFF

and machine unplugged before perform-

ing any maintenance.

WARNING

Loading

Handles

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C 17

3. Loosen sheath clamp screws (Figure 19

A) two turns, but do not remove.

4. Remove the cable retention clamp fasten-

ers and retention clamp (Figure 19).

Figure 19 – Cable Installation

5. Remove the retaining ring and pin from

the cable coupling.

• Disconnect coupling from the gearbox

shaft. Remove the entire cable assem-

bly from the machine.

•

Insert cable coupling through the drum

channel and install the coupling over

the gearbox shaft. Securely install the

pin and retaining ring. Do not load ca-

ble yet.

• Slide end of cable retention clamp over

the cable and into the drum channel.

• Loosely install the 4 cable retention

clamp fasteners (see Figure 19). Make

sure that the cable sheath is within ¼"

(6.4 mm) of the cable coupling. When

looking through the viewport, the end

of the sheath must be between the

lines (see Figure 20).

Figure 20 – Sheath Position In Viewport

6. Securely tighten all clamp fasteners.

Always wear safety glasses and other

appropriate protective equipment when

performing any maintenance.

Cleaning

It is good practice to use a towel to wipe

dirt and debris from the sheath as the cable

assembly is pulled from the drain and fed

back into the drum. This will help to keep

the drum clean and reduce the likelihood of

the cable assembly sticking in the drum. If

needed, cable assembly can be pulled from

the machine and the housing opened for

flushing/cleaning.

Clean the machine as needed with hot soapy

water and/or mild disinfectants.

Do not submerge or flush the machine with

water. Do not allow water to enter motor or

other electrical components. Make sure unit is

completely dry before plugging in and using.

Lubrication

The FlexShaft Drain Cleaning Machines are

lubricated for life from the factory.

Cable Re-termination

The FlexShaft cable cannot be shortened

or re-terminated. If the cable is damaged,

it must be replaced. Do not use a damaged

cable.

Cable Assembly Replacement

1. Remove chain knocker from cable as-

sembly.

2. Use a 4 mm hex wrench to loosen the

front cover fasteners (they are retained to

the cover and frame). Lift the cover and

unplug the motor wire connector (Figure

18). Feed cable through bushing into ma-

chine. Remove the front cover.

Figure 18 – Drain Cleaner Housing Opened

Motor Wire

Connector

Front Cover

Pin/Retaining

Ring

Cable Clamp

Fastener

Cable Retention

Clamp

Sheath in

Viewport

Cable Coupling

A

K9-306 FlexShaftTM Drain Cleaning Machine

999-995-214.10_REV. C

18

7. Confirm end of sheath is between the

lines in the viewport. Securely tighten the

sheath clamp screws.

8. Feed the cable into the drum channel.

9. Feed the end of the cable through the

cable bushing in the front cover and se-

curely install the front cover.

10. With no knocker installed, hold cable

end away from your body or others. Run

machine in REVERSE for 5 seconds to

maximize exposed cable. Place switch in

O-OFF position and unplug machine.

If there is no cable exposed, cut back

sheath to expose 1"- 2" (25 - 50 mm) of

cable. Hold sheath and pull on cable to

remove slack and expose the maximum

amount of cable. Cut the sheath back to

expose 7 3/4" (197 mm) of cable mea-

sured from the end of the cable.

Go to Installing/Adjusting the Chain

Knocker section, step 5 to complete

chain knocker installation.

Motor Brush

Inspection/Change

Brushes should be inspected every 6 months

and changed when shorter than ½" (13 mm).

1. See Cable Assembly Replacement, step

2 to remove cover.

2. Use a screwdriver to remove the brush

cover, Figure 21. Remove brush and in-

spect. If there are any signs of damage or

shorter than ½" (13 mm), replace brush-

es.

3. Reverse process to reassemble.

4. Place chain knocker in drain and allow

to run 15 minutes in FORWARD and

REVERSE, to break in brushes.

Figure 21 – Inspecting/Changing Motor

Brushes

Electronic Torque Limiter/

Motor Thermal Overload

The machine is equipped with an Electronic

Torque Limiter/Motor Thermal Overload. If

the motor draws excessive current, the motor

will shut off to reduce the likelihood of cable

damage and the Electronic Torque Limiter

LED will flash. Release the foot switch to

allow the motor to restart. See the Operating

Instructions section for information for remov-

ing the cable from a blockage.

If the Electronic Torque Limiter LED is on con-

tinuously, the motor has overheated. To reset

the thermal overload, unplug machine, turn

the REV/O-OFF/FOR switch to the O-OFF

position and let the machine cool for at least

15 minutes. If the machine will not start or

continuously trips during normal operation,

take machine for service.

Brush

Covers

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