Dometic MasterFlush 7640 Mode d'emploi

Macerator toilet

Installation and

Operating Manual . . . . . . . . . . . 6

Toilette à broyeur

Instructions de montage

et de service . . . . . . . . . . . . . . 23

Inodoro triturador

Instrucciones de montaje

y de uso . . . . . . . . . . . . . . . . . . 42

Sanita de trituração

Instruções de montagem e

manual de instruções. . . . . . . . 61

EN

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PT

MasterFlush7640

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C

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MasterFlush7640

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MasterFlush7640

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Explanation of symbols MasterFlush7640

6

Please read this instruction manual carefully before installation and

first use, and store it in a safe place. If you pass on the product to

another person, hand over this instruction manual along with it.

Contents

1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7 Maintenance and winterizing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

9 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

10 Limited warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

11 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1 Explanation of symbols

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CAUTION!

Safety instruction: Failure to observe this instruction can lead to

injury.

NOTE

Supplementary information for operating the product.

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MasterFlush7640 Safety instructions

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2 Safety instructions

The manufacturer accepts no liability for damage in the following cases:

 Faulty assembly or connection

 Damage to the product resulting from mechanical influences

 Alterations to the product without express permission from the manu-

facturer

 Use for purposes other than those described in the operating manual

2.1 Warnings

The following statement must be read and understood before installing,

servicing and/or operating this product. Modification of this product may

result in property damage.

The manufacturer recommends that a qualified RV technician or electrician

install or service this product with regard to all applicable codes and regula-

tions. Equipment damage, personal injury or death could result from

improper installation.

!

CAUTION!

Overfilling the holding tank can create serious damage to the

sanitation system, such as rupturing the holding tank and releas-

ing tank contents into the motorhome. To prevent this possibility,

the manufacturer recommends using the “full tank” shut-down

circuitry in the toilet’s electronic control module. The “full” signal

from the holding tank can be generated by an optional Dometic

DTM01C tank monitor or DTM04 four-level tank monitor system.

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Intended use MasterFlush7640

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3 Intended use

The Dometic MasterFlush7640 toilet provides an electric-flush toilet that

macerates waste and pumps it to a holding tank or other effluent storage or

disposal system. Operated by a flush pedal, the toilet allows the user to add

water to the bowl (before using or flushing) and to flush the toilet.

4 Technical description

4.1 Benefits

Convenient electronic flush. Add water or flush by pressing on the flush

pedal.

Choice of two water consumption settings. “Normal” flush uses 0.83 gal.

(3.1 l) per flush and adds water to bowl after flush; “Dry Bowl” setting uses

only 0.21 gal. (0.79 l) per flush and does not add water to the bowl.

Versatile installation. Powerful macerator pump allows toilet to be located

up to 40 ft. (12.2 m) away from holding tank or other discharge line destina-

tion.

Automatic “full tank” shut-down. When connected to a holding tank level

indication system (such as Dometic DTM01 system), the MasterFlush7640

toilet will not flush when the holding tank is full. This safety features prevents

overfilling the holding tank, which may cause damage to the motorhome.

EN

MasterFlush7640 Installation

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4.2 Components

Please refer to complete parts list (printed separately) for more details.

5 Installation

I

No. in

fig. 1, page 3

Description

1 Vacuum breaker cover

2 Vacuum breaker

3 Macerator pump

4 Pump/base cover

5 Floor flange mounting hardware kit

6 Electrical wires

7 Floor flange seal

8 Water valve

9 Flush pedal

10 Toilet base

11 Toilet bowl

12 Toilet seat

– Remote mounting hardware kit

NOTE

 Be sure foot pedal, when pressed, touches same flat surface

on which toilet is installed.

 Be sure to follow recommended installation requirements

(chapter “Minimum installation requirements” on page 21).

 The toilet is not intended for installation in a shower.

EN

Installation MasterFlush7640

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5.1 Tools required

 pliers or adjustable wrench

 7/16 in./11 mm wrench

 electrical connection tools

5.2 Installation on floor flange

1. To replace an older toilet:

– Turn off water supply to toilet

– Remove and drain water supply line.

– Remove toilet hold-down bolts/screws.

– Remove toilet from floor.

– Remove and discard old floor flange seal and hold-down bolts.

– Verify center of floor flange is at least the recommended rough-in

distance from back wall (fig. 3 A, page 3 and chapter “Rough-in

dimensions” on page 22).

– Make sure top surface of floor flange is clean and free of any debris

or sealant.

2. If installing a new floor flange:

– Make certain that toilet mounting holes are at the correct location

(fig. 3 D, page 3).

– Floor flange must be secured to floor with a minimum of four screws

(eight are preferred).

– Insert two supplied T-bolts into slots in floor flange (fig. 4, page 4).

3. Verify that floor flange seal is installed on base of toilet (fig. 5 1,

page 4).

4. Carefully set toilet over floor flange.

5. Align holes in toilet base with T-bolts as toilet is lowered onto floor

flange. Toilet must be aligned so that outlet of base fits inside of floor

flange outlet hole.

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NOTE

Entire toilet base does not rest completely on floor yet. Floor seal

must be compressed in following steps.

EN

MasterFlush7640 Installation

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6. Install floor mounting nuts and washers onto T-bolts. Carefully torque

nuts to 30 – 40 inch-pounds (3.4 – 4.5 Nm). Do not overtighten. Alter-

nate between sides when tightening to prevent distortion of base. When

tight, base should be securely attached and flat against floor. Attach bolt

covers onto nuts (fig. 5 2, page 4).

7. Connect water supply line and torque connection to 30 – 40 inch-

pounds (3.4 – 4.5 Nm). Do not overtighten (fig. 5 3, page 4).

8. Connect electrical power to toilet according to wiring diagram on toilet’s

parts list (printed separately).

9. Turn on electrical power to toilet.

10. Turn on water supply to toilet.

11. Flush toilet several times and check for leaks.

12. Attach pump/base cover (fig. 5 5, page 4) to base with screws on sides

of toilet base (fig. 6, page 4) and with locking tabs on sides and back.

5.3 Remote installation

1. To install toilet separate from holding tank (not on typical floor flange),

position toilet in location with same clearances as flange mounted toilet

(fig. 3, page 3 and chapter “Rough-in dimensions” on page 22).

2. Mark fastener hole locations through two holes in base.

3. Drill pilot holes for hex screws in Remote Mounting Hardware Kit.

4. Remove black rubber elbow from check valve (fig. 5 4, page 4) in back

of toilet (fig. 7, page 5).

5. Route either 1.5 in. (38 mm) ID flexible sanitation hose or 1.5 in.

(38 mm) ID PVC or ABS pipe from waste tank to check valve. Plumbing

can be routed either above- or below-floor as required. Access holes

may need to be drilled through floor or wall depending on installation

layout (fig. 8, page 5). Flexible sanitation hose can be connected

directly to check valve with two hose clamps.

6. Route and connect appropriate wiring and water line according to

chapter “Installation on floor flange” on page 10.

7. Fasten toilet to floor with hex-head screws on each side of base.

8. Cover fasteners with plastic caps.

9. Turn on water supply to toilet.

EN

Operation MasterFlush7640

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10. Flush toilet several times and check for leaks.

11. Attach pump/base cover (fig. 5 5, page 4) to base with screws on sides

of toilet base (fig. 6, page 4) and with locking tabs on sides and back.

6 Operation

6.1 Add water to bowl

1. To add water to the toilet, press the flush pedal part way down (fig. 9,

page 5).

2. To avoid possible overflow, water flow will stop automatically if pedal is

pressed too long. More water is usually added only when flushing solids.

6.2 Flush toilet

1. To flush, press pedal down completely, then release it (fig. 9, page 5).

2. This activates a powerful macerator pump that siphons water and waste

from the toilet bowl, macerates and propels the effluent to the holding

tank.

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CAUTION!

Flush only water, bodily wastes and rapid-dissolving toilet tissue.

Do not flush wet wipes, sanitary napkins, diapers, paper cups,

cotton swabs, food, hair or liquids such as oils or solvents as

clogging or damage to the toilet or toilet system may occur.

NOTE

 Residual water trickle in ceramic bowls: Due to integrated rim

of this toilet bowl, water may continue to slowly trickle into toilet

bowl for up to 20 minutes after flushing. If water trickle

continues after 30 minutes, replace water valve.

 Make sure all guests understand toilet operation before use.

EN

MasterFlush7640 Maintenance and winterizing

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6.3 Changing “Flush” modes

MasterFlush7640 toilets offer two flush settings to help manage water

consumption:

 Normal flush – Uses 0.83 gal. (3.1 l) per flush. Adds water to bowl after

every flush.

 Dry Bowl flush – Uses 0.21 gal. (0.79 l) per flush. Does not add water to

bowl after flush.

1. To change from Normal to Dry Bowl flush setting, press flush pedal for

about 10 seconds.

✓ Flush mode has been changed to Dry Bowl setting.

2. Change mode to Normal flush by following the same procedure.

7 Maintenance and winterizing

7.1 Routine toilet cleaning

For routine cleaning, use Dometic Toilet Bowl Cleaner. If this cleaner cannot

be found in your area, contact the manufacturer for your nearest dealer (see

the back of the manual for the addresses). If the cleaner is not available, use

most any nonabrasive bathroom and toilet bowl cleaner. Please follow label

instructions.

!

CAUTION!

To avoid damaging internal seals, do not clean toilet with abrasive

cleaners, caustic chemicals, or lubricants and cleaners that

contain alcohols or petroleum distillates.

EN

Maintenance and winterizing MasterFlush7640

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7.2 Routine maintenance

Monthly

1. Inspect toilet, plumbing, and plumbing connections, wires, and wire

connections.

2. Open and close all plumbing valves.

3. Check in-line water filters, if any, for blockage.

Yearly

1. Check water valve filter. Also check water valve filter if water flow into

toilet becomes insufficient.

7.3 During extended periods of non-use

The macerator toilet and sanitation system should be protected if toilet will

not be needed for an extended period of time (more than two weeks,

especially in hot weather).

1. Flush toilet in “Normal” mode and add 4 oz. (120 ml) of liquid bio-

degradable laundry detergent (should NOT contain bleach or environ-

mentally harmful substances).

2. Flush toilet at least five times.

3. Turn off water supply to toilet.

4. Flush the toilet without water. Repeat three times. (This procedure will

minimize any remaining water in the macerator pump.)

5. Turn off power to the toilet.

If system will be subjected to freezing temperatures, please follow above

procedure, and then winterize system as described below.

EN

MasterFlush7640 Maintenance and winterizing

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7.4 Winterizing

At the end of each camping season, or when the vehicle is stored for long

periods of time during which the toilet may be exposed to freezing tempera-

tures, the toilet system should be winterized for storage by using potable

water-safe antifreeze.

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Non-toxic Antifreeze Winterization

1. Drain potable water tank and empty waste holding tank.

2. Add freshwater antifreeze to potable water tank according to mixture

instructions from antifreeze manufacturer.

3. Flush toilet several times until antifreeze mixture has flowed completely

through toilet, macerator pump and holding tank.

4. Turn off power to toilet.

Each installation is different, so antifreeze mixture amounts may vary. User

discretion is required to assure adequate protection.

I

CAUTION!

 This toilet is not intended for use when exposed to tempera-

tures below freezing.

 Never use automotive-type antifreeze (ethylene glycol) in

freshwater systems.

NOTE

Use nontoxic antifreeze (propylene glycol) designated for potable

water systems. See vehicle owner’s manual.

NOTE

Never leave vehicle unoccupied for extended periods of time with

municipal water supply or onboard water pump turned on when

there is a possibility of freezing temperature.

EN

Troubleshooting MasterFlush7640

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8 Troubleshooting

9 Disposal

1. Place the packaging material in the appropriate recycling waste bins

wherever possible.

M

If you wish to finally dispose of the product, ask your local recycling

centre or specialist dealer for details about how to do this in

accordance with the applicable disposal regulations.

Problem Possible cause Suggested remedy

Flush cycle operates

correctly but water in the

bowl empties slowly or not

at all.

Discharge piping is

pinched or kinked.

Check discharge piping.

The macerator pump or

discharge piping is

blocked.

Clear blockage.

Macerator pump makes

unusually loud noise or

continually trips breaker.

Foreign material in pump

chamber.

Clear foreign material

from pump chamber.

Flush cycle is not

activated after pressing

flush pedal.

Electrical power to toilet is

shut off or disrupted.

Check wiring and circuit

breakers (or fuses).

Flush pedal is malfunc-

tioning.

Replace switch in flush

pedal.

Circuit board is malfunc-

tioning.

Replace circuit board.

Holding tank is full and

signal from tank has shut

down electrical power to

toilet (if tank level monitor

system is installed).

Empty holding tank.

Insufficient or no water

enters the toilet bowl.

Water supply line is

pinched or kinked.

Check water supply line.

Screen in water valve is

blocked.

Clear blockage at water

valve.

Water valve is malfunc-

tioning.

Replace water valve.

EN

MasterFlush7640 Limited warranty

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10 Limited warranty

The seller named below makes the following warranty with respect to

Dometic MasterFlush Model 7640 only.

1. One year limited warranty

1A. This Limited Warranty will be in effect for one year from the date of

purchase.

1B. This Limited Warranty is made only to the First Purchaser (herein-

after called the “Original Purchaser”) who acquired the product for

Original Purchaser’s personal, family, or household-type use. The

Original Purchaser should retain a copy of the sales receipt or

invoice as evidence of the date of purchase because proof of

purchase is required to obtain warranty service.

1C. If this product is placed in commercial or business use, it will be

warranted, to the Original Purchaser only, to be free of defects in

material and workmanship for a period of 90 days from the date of

purchase.

1D. This warranty covers all parts of the Dometic toilet which is

warranted to be free of defects in material and workmanship under

normal use. This warranty does not cover conditions unrelated to

the material and workmanship of the product. Such unrelated

conditions include, but are not limited to, (a) faulty installation and

any damage resulting from such; (b) the need for normal mainte-

nance and any damage resulting from failure to provide such

maintenance; (c) failure to follow Seller’s instructions for use of

this product, including failure which may result from not following

winterization procedures; (d) any accident that results in damage

to this product; (e) scratching or staining of any ceramic or plastic

component; (f) acts of God, or misuse of any part of this product

and any alteration by anyone other than the Seller.

1E. For Original Purchaser (ONLY) to obtain the benefits of this

Warranty during the 1-year period (for personal use) or 90-day

period (for commercial use), the following shall apply:

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Limited warranty MasterFlush7640

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(a) Original Purchaser shall contact the local dealer from whom the

product was purchased; or contact the Seller Customer Service

Department at 1-800-321-9886 (8 a.m.-5 p.m. ET, USA) and

provide the local dealer or Seller Customer Service Department

with sales receipt or invoice, product model and serial number

from product. The product model identification label is located on

the back of the toilet bowl under the pump/base cover (see illu-

stration).

(b) If product, while still under warranty, is returned to local dealer

where purchased, the local dealer will repair, replace or refund the

product per this Warranty and as authorized by the Seller. Seller

will provide necessary replacement parts or product free of charge

to Original Purchaser, including freight on such replacement parts

or product, and Seller will pay direct labor charges for such repair

or replacement.

(c) Under no circumstances will Seller pay or be liable for any of

Original Purchaser’s or dealer’s travel charges or other expenses

associated with bringing the product or recreation vehicle to the

dealer for repair, for providing dealer with access to the product or

vehicle, or for downtime of the product or vehicle.

EN

MasterFlush7640 Limited warranty

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(d) Original Purchaser may be required to return defective product or

parts when requested by Seller; in such event, Seller will pay

related freight costs.

2. THE SELLER DOES NOT AUTHORIZE ANY PERSON OR COMPANY

TO CREATE OR EXTEND ANY WARRANTY OBLIGATIONS OR

LIABILITY ON ITS BEHALF.

3. REPAIR OR REPLACEMENT OF, OR REFUND FOR, DEFECTIVE

PRODUCT, AT SELLER’S OPTION, SHALL BE THE ORIGINAL

PURCHASER’S SOLE REMEDY UNDER THIS LIMITED WARRANTY.

IN NO EVENT SHALL SELLER BE LIABLE FOR PURCHASER’S

INCIDENTAL OR CONSEQUENTIAL DAMAGES. SOME STATES DO

NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR

CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR

EXCLUSION MAY NOT APPLY TO YOU.

4. SELLER DISCLAIMS ALL OTHER WARRANTIES WITH RESPECT TO

THE PRODUCT, WHETHER EXPRESS OR IMPLIED, AND SPECIFI-

CALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTA-

BILITY AND FITNESS FOR A PARTICULAR PURPOSE. SOME

STATES DO NOT ALLOW LIMITATIONS ON IMPLIED WARRANTIES

OR HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE

LIMITATION MAY NOT APPLY TO YOU.

5. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU

MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO

STATE.

Seller:

Dometic Corporation - Sanitation Div.

13128 SR 226

Big Prairie, Ohio 44611 USA

330-439-5550

EN

Technical data MasterFlush7640

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11 Technical data

11.1 Certificates

11.2 Materials

 Toilet bowl: vitreous ceramic

 Toilet seat: enameled wood

 Toilet base: polypropylene

 Macerator pump body: glass-filled polypropylene

 Water valve: polypropylene

 Foot pedal: polypropylene

 Vacuum breaker: ABS/polypropylene

 Floor flange seal: nitrile rubber, foam

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