Desa Electric Heater T70 Manuel utilisateur

OPERATOR’S

MANUAL

T70, T115, and T165

Portable Space

Heaters

John Deere Merchandise Division

OMTY25047 Issue Nov-00

LITHO IN U.S.A.

ENGLISH/FRENCH

FBL 156262

107351-01C

Introduction

THANK YOU for purchasing a John Deere product.

READ THIS MANUAL carefully to learn how to

operate and service your machine correctly. Failure

to do so could result in personal injury or equipment

damage.

THIS MANUAL SHOULD BE CONSIDERED a

permanent part of your machine and should remain

with the machine when you sell it.

MEASUREMENTS in this manual are given in both

metric and customary U.S. unit equivalents. Use only

correct replacement parts and fasteners. Metric and

inch fasteners may require a specific metric or inch

wrench.

RIGHT-HAND AND LEFT-HAND sides are determined

by facing in the direction the machine or implement

will travel when going forward.

WRITE PRODUCT IDENTIFICATION NUMBERS

(P.I.N.) in

Serial Number Identification,

page 25.

Accurately record all the numbers to help in tracing

the machine should it be stolen. Your dealer also

needs these numbers when you order parts. File the

identification numbers in a secure place off the

machine.

WARRANTY is provided as part of John Deere’s

support program for customers who operate and

maintain their equipment as described in this manual.

The warranty is explained on the warranty certificate

which you should have received from you dealer.

This warranty provides you the assurance that John

Deere will back its products where defects appear

within the warranty period. In some circumstances,

John Deere also provides field improvements, often

without charge to the customer, even if the product is

out of warranty. Should the equipment be abused, or

modified to change its performance beyond the

original factory specifications, the warranty will be-

come void and field improvements may be denied.

Setting fuel delivery above specifications or otherwise

overpowering machines will result in such action.

107351-01C

Contents

Page

Safety.............................................................................1

Operation

Electrical Supply .............................................................7

Filling Fuel Tank..............................................................8

Extension Cords .............................................................9

Ventilation .......................................................................9

Starting Heater .............................................................10

Heater Operation .......................................................... 11

Stopping the Heater...................................................... 11

To Restart Heater ......................................................... 11

Troubleshooting..........................................................12

Periodic Service

Additional Service Information......................................13

Using Service Records .................................................13

Service Intervals

150 Hours...............................................................13

250 Hours...............................................................13

500 Hours...............................................................14

Yearly......................................................................14

Draining Fuel Tank........................................................14

Cleaning Flame Sensor ................................................15

Cleaning Air Intake Filter ..............................................15

Replacing Fuse.............................................................16

Cleaning Fan ................................................................16

Cleaning Fuel Nozzle ...................................................17

Fuel and Air Line Replacement and Proper Routing......18

Cleaning Fuel Filter ......................................................19

Storage Location and Maintenance..............................20

Assembly

Unpack Components ....................................................21

Installing Nose Cone Guard .........................................21

Attaching Wheels and Axle...........................................22

Attaching Heater and Handles......................................23

Specifications .............................................................24

Serial Number Identification......................................25

i

All information, illustrations and specifications in this manual are based on

the latest information available at the time of publication. The right is

reserved to make changes at any time without notice.

107351-01C

ii

Contents

107351-01C

Safety

RECOGNIZE SAFETY INFORMATION

This is the safety-alert symbol. When you see this

symbol on your machine or in this manual, be alert to

the potential for personal injury.

Follow recommended precautions and safe operating

practices.

UNDERSTAND SIGNAL WORDS

A signal word —DANGER, WARNING, or CAUTION—

is used with the safety-alert symbol. DANGER identifies

the most serious hazards.

DANGER or WARNING safety signs are located near

specific hazards. General precautions are listed on

CAUTION safety signs. CAUTION also calls atten-

tion to safety messages in this manual.

!

DANGER

WARNING

CAUTION

FOLLOW SAFETY INSTRUCTIONS

Carefully read all safety messages in this manual

and on your machine safety signs. Keep safety signs

in good condition. Replace missing or damaged

safety signs. Be sure new equipment components

and repair parts include the current safety signs.

Replacement safety signs are available from your

John Deere dealer.

Learn how to operate the machine and how to use

controls properly. Do not let anyone operate without

instruction.

Keep your machine in proper working condition.

Unauthorized modifications to the machine may impair

the function and/or safety and affect machine life.

If you do not understand any part of this manual and

need assistance, contact your John Deere dealer.

WARNING

CAUTION

1

107351-01C

Early signs of carbon monoxide poisoning resemble

the ﬂu, with headaches, dizziness, and/or nausea. If

you have these signs, the heater may not be working

properly. Get fresh air at once! Have heater serviced.

Some people are more affected by carbon monoxide

than others. These include pregnant women, persons

with heart or lung disease or anemia, those under the

inﬂuence of alcohol, and those at high altitudes.

Make certain you read and understand all warnings.

Keep this manual for reference. It is your guide to

safe and proper operation of this heater.

WARNINGS

SAFETY INFORMATION

IMPORTANT: Read this owner’s manual carefully

and completely before trying to

assemble, operate, or service this

heater. Improper use of this heater can

cause serious injury or death from

burns, ﬁre, explosion, electrical shock,

and carbon monoxide poisoning.

DANGER

Carbon monoxide poisoning may lead to death!

• Use only kerosene or No. 1 fuel oil.

• Use only the electrical voltage and frequency

speciﬁed on model plate.

• Heater must be grounded. Use only a properly

grounded three-wire extension cord. Plug into

grounded outlet only.

• Use only in areas free of ﬂammable vapors or

high dust content.

• Minimum clearances from any combustible

materials: 8 feet (244 cm) from hot air outlet; 6 feet

(183 cm) from top; and 4 feet (122 cm) from sides

and inlet.

• Locate heater on a stable and level surface while

hot or operating or a ﬁre may occur.

• Use only in well-vented areas. Provide ventilation

of at least three-square-feet (2,800 cm) for each

100,000 Btu/Hr (29.3 kW) of rating.

• Keep children and animals away from heater at

all times.

• Never start heater when combustion chamber is

hot or if fuel has accumulated in combustion

chamber.

• Heater is equipped with a thermostat, heater may

start anytime.

• When heater is moved or stored, it must be in a

level position or fuel spillage may occur.

• Use heater only in accordance with local ordi-

nances and codes.

• Never use gasoline, crankcase drainings, naph-

tha, paint thinners, alcohol, or other highly flam-

mable fuels.

• Never use heater where gasoline, paint thinner,

or other highly flammable vapors are present.

• Never use heater in living or sleeping areas.

• Never leave a heater plugged in without adult

supervision if children or animals are likely to be

present.

• Never move, handle, refuel, or service a hot,

operating, or plugged-in heater.

• Never block air inlet (rear) or air outlet (front) of

heater.

• Never attach duct work to front or rear of heater.

• Never attach heater to external fuel tank.

2

WARNING: This product contains and/or

generates chemicals known to the State of

California to cause cancer or birth defects,

or other reproductive harm.

107351-01C

HANDLE FLUIDS SAFELY - AVOID FIRES

When you work around fuel, do not smoke or work

near heaters or other fire hazards.

Store flammable fluids away from fire hazards. Do

not incinerate or puncture pressurized containers.

Make sure machine is clean of trash, grease, and

debris.

Do not store oily rags; they can ignite and burn

spontaneously.

HANDLE FUEL SAFELY

The heater is designed to operate on kerosene or

No. 1 fuel oil only. DO NOT use diesel fuel, No. 2 fuel

oil, gasoline, crank case drainings, naphtha, paint

thinner, alcohol, or other highly volatile fuels.

Toxic fumes could be created by using

non-recommended fuels.

Do not add fuel to heater while it is hot, operating, or

plugged in. Use only recommended fuel.

Do not smoke while refueling heater.

Avoid spilling fuel. Do not overfill fuel tank.

Wipe up any spilled fuel after refueling.

Move away from fueling area before operating heater.

Store in a level position when filled or fuel leakage

may occur.

Do not use heater in the presence of flammable

vapors such as paint, fuel, certain cleaning solvents,

or high dust content.

IMPORTANT:

Use a KEROSENE ONLY storage

container. Be sure storage container is clean. For-

eign matter such as rust, dirt, or water will cause the

ignition control assembly to shut down the heater.

Foreign matter may also require you to clean fuel

system often.

3

107351-01C

PREPARE FOR EMERGENCIES

Be prepared if a fire starts.

Keep a first aid kit and fire extinguisher handy.

Keep emergency numbers for doctors, ambulance

service, hospital, and fire department near your

telephone.

RESPECT ELECTRICITY

Make certain heater is properly grounded. Extension

cord must be a 3-wire grounded cord and is of proper

wire size for the length. Extension cord must be at

least six feet (1.8 meters) long.

Make certain the connection between the power cord

and the extension cord is not exposed to water.

Disconnect electrical plug before servicing or relocat-

ing heater.

Use heater only with 120-volt, AC, 60-hertz power

source.

Use only on a fused circuit of proper voltage and

frequency that is capable of handling the load.

4

107351-01C

Risk of fire or burns. Heater may ig-

nite any time power cord is plugged

in. Unplug power cord if heater is un-

attended.

Risque de feu ou de brûlures. Le

radiateur peut s’allumer n’importe

quand lorsque le cordon est branché.

Débrancher le cordon électrique

lorsque le radiateur n’est pas surveillé.

WARNING

ATTENTION

5

• Improper use of this heater can

cause serious injury or death from

burns, fire, explosion, electrical

shock, and carbon monoxide

poisoning.

• Use only kerosene or No. 1 fuel

oil to avoid risk of fire or explosion.

Never use gasoline, crankcase

drainings, naphtha, paint thinners,

alcohol, or other flammable fuels.

• Never use heater where gasoline,

paint thinner, or other flammable

vapors are present.

• Never use heater in areas with

high dust content.

• Do not start heater when chamber

is hot or if fuel has accumulated in

chamber.

• Minimum heater clearances from

combustible materials: Outlet: 8 Ft.:

Sides: 4 Ft.: Top: 4 Ft.: Rear: 4 Ft.

• Heaters used in the vicinity of

tarpaulins, canvas or similar

enclosure materials shall be located

a safe distance from such materials.

The recommended minimum safe

distance is 10 feet. It is further

recommended that these enclosure

materials be of a fire retardant

nature. These enclosure materials

shall be securely fastened to

prevent them from igniting or from

upsetting heater due to wind action.

• Use only a three-prong, grounded

extension cord. Use only with the

electrical voltage and frequency

specified on model plate.

• Use only in well-ventilated areas.

Provide at least a 3-square-foot

opening of fresh, outside air for

each 100,000 BTU/Hr of rating

when running heater.

• Unplug heater when not in use.

• Never block air inlet (rear) or air outlet

(front) of heater. Never attach duct

work to front or rear of heater. Do not

attach heater to external fuel tank.

• Locate heater on a stable and

level surface while hot or running

or a fire may occur.

• When moving or storing heater,

keep heater in a level position or

fuel spillage may occur.

• Never move, handle, refuel, or

service a hot, operating, or plugged-

in heater.

• Keep children and animals away

from heater.

• Never use heater in living or

sleeping areas.

• Follow all local ordinances and

codes when using heater.

CAUTION

!

WARNING: This heater is

equipped with a thermostat.

Heater may start at any time.

• Utiliser uniquement du kérosène ou

du mazout n° 1 pour éviter les risques

d’incendie ou d’explosion. Ne jamais

utiliser d’essence, d’huile de vidange,

d’huile de naphte, du solvant pour

peinture, de l’alcool ou d’autres

combustibles inflammables.

• Ne jamais utiliser l’appareil de

chauffage dans un endroit où de

l’essence, du solvant pour peinture

ou d’autres vapeurs inflammables

sont présents.

• Ne jamais utiliser l’appareil de

chauffage dans un endroit très

poussiéreux.

• Ne pas mettre la chaufferette en

marche lorsque la chambre de

combustion est chaude ou que le

combustible s’est accumulé dans la

chambre de combustion.

• Distances minimales de l’appareil

aux matériaux combustibles:

Sortie: 2,44 m (8 pi), Côtés: 1,22 m

(4 pi), Dessus: 1,22 m (4 pi), Arrière:

1,22 m (4 pi)

• Les appareils utilisés à proximité

de bâches, toiles ou matériaux

d’enveloppement similaires doivent

être placés à une distance

sécuritaire de ces matériaux. La

distance sécuritaire minimale

recommandée est de 3,05 m (10 pi).

• En outre, il est conseillé que ces

matériaux d’enveloppement soient

ignifuges. Ils doivent en plus être

bien fixé afin de les empêcher de

prendre feu ou de renverser

l’appareil de chauffage à cause des

courants d’air.

• Utiliser uniquement un cordon

prolongateur à trois broches avec

mise à la terre. Utiliser

exclusivement la tension et la

fréquence électriques spécifiées

sur la plaque signalétique.

• Utiliser l’appareil seulement dans

des endroits bien ventilés. Prévoir

une ouverture d’au moins 0,28 m2

(3 pi2) pour l’air frais extérieur pour

chaque 29,3 kW (100 000 BTU/h)

de capacité.

• Débrancher l’appareil quand il

n’est pas en usage.

• Ne jamais bloquer l’entrée

(arrière) ou la sortie (avant) d’air de

l’appareil de chauffage. Ne jamais

fixer de conduits à l’avant ou à

l’arrière de l’appareil. Ne pas relier

la chaufferette au réservoir de

combustible extérieur.

• Placer l’appareil de chauffage sur

une surface stable et plane quand

il est chaud ou qu’il fonctionne pour

éviter les incendies.

• Lors du déplacement ou du

remisage de l’appareil de chauffage,

le maintenir d’aplomb pour éviter les

déversements de carburant.

• Ne jamais déplacer ni manipuler

un appareil de chauffage chaud, en

fonctionnement ou branché, et ne

jamais en faire le plein ou l’entretien.

• Tenir les enfants et les animaux à

l’écart de l’appareil.

• Ne jamais utiliser l’appareil de

chauffage dans des locaux

d’habitation ou des dortoirs.

• Respectez tous les règlements

locaux et les normes régissant

l’emploi de cet appareil.

ATTENTION

!

ADVERTISSEMENT: (Cet

appareil de chauffage est équipé

d’un thermostat. Il risque de

démarrer à tout moment.)

098131-02

FBL156262

WARNING

ATTENTION

Hot surfaces. Do not touch or move while

burner is ignited or hot. Allow to cool and

unplug heater before fueling.

Surfaces chaudes. ne pas toucher ou

déplacer alors que le brûleur est allumé

ou chaud. Laissez refroidir et débranchez

le radiateur avant d’alimenter en combus-

098129-02

107351-01C

098134-02

WARNING ATTENTION

Risk of explosion. Unplug power

cord before fueling. Use only

kerosene or #1 fuel oil.

Do not store, transport or ship

heater with fuel in the tank.

Utiliser uniquement du kérosène

ou du carburant No. 1.

Ne pas entreposer, transporter

ou expédier le réchaud lorsqu’il

y a du carburant dans le réservoir.

Model T115 and T165

Model T70

6

107351-01C

Operation

ELECTRICAL SUPPLY

CAUTION: If an additional electrical outlet is

needed to operate your heater, it should be

installed by a qualified electrician and the

installation should conform to the appli-

cable codes and governing requirements.

The heater requires a grounded 120-volt, 60-hertz

receptacle for a power source. If necessary, use an

appropriate grounding adapter to connect to a two-

prong receptacle. Check heater amperage require-

ments in

Specifications,

page 24 .

IMPORTANT: DO NOT overload circuit.

7

107351-01C

CAUTION: DO NOT add fuel while the heater is

hot or operating. DO NOT use diesel, No. 2 fuel

oil, gasoline, crank case drainings, naphtha,

paint thinner, alcohol, or other highly volatile

fuels. Toxic fumes could be created by using

non-recommended fuels.

FILLING FUEL TANK

Remove cap (A) from fuel tank and fill with kerosene

or No. 1 fuel oil.

Do not use heavy fuels such as No. 2 fuel oil or No. 2

Diesel. Using heavy fuels will result in:

• clogged fuel filter and nozzle due to fuel gelling

• carbon build up on spark plug

Do not use No. 3 fuel oil or heavy oils such as crank

case drainings. These heavy oils will not ignite

properly and will contaminate the heater.

Fueling

• Personnel involved with fueling shall be qualified

and thoroughly familiar with the manufacturer’s

instructions and applicable federal, state, and local

regulations regarding the safe fueling of heating units.

• Only the type of fuel specified on the heater’s

data plate shall be used.

• All flame, including the pilot light, if any, shall be

extinguished and the heater allowed to cool, prior to

fueling.

• During fueling, all fuel lines and fuel-line connec-

tions shall be inspected for leaks. Any leaks shall

be repaired prior to returning the heater to service.

• At no time shall more than one day’s supply of

heater fuel be stored inside a building in the vicinity

of the heater. Bulk fuel storage shall be outside the

structure.

• All fuel storage shall be located a minimum of 25

feet (7.62 m) from heaters, torches, welding equip-

ment, and similar sources of ignition (exception: the

fuel reservoir integral with the heater unit).

• Whenever possible, fuel storage shall be con-

fined to areas where floor penetrations do not

permit fuel to drip onto or be ignited by a fire at

lower elevation.

• Fuel storage shall be in accordance with the

federal, state, or local authority having jurisdiction.

Operation

8

A

107351-01C

Operation

EXTENSION CORDS

Plug heater’s power cord into approved, grounded,

three-wire extension cord. Extension cord must be

at least six feet (1.8 meters) long.

Extension Cord Size Requirement

6 to 10 feet (1.8 to 3 meters) long, use 18 AWG

(0.75 mm

2

) rated cord

11 to 100 feet (3.3 to 30.5 meters) long, use 16 AWG

(1.0 mm

2

) rated cord

101 to 200 feet (30.8 to 61 meters) long, use 14 AWG

(1.5 mm

2

) rated cord

VENTILATION

WARNING: Provide a fresh, outside air

opening of at least three square feet (2,800

square cm) for each 100,000 Btu/Hr (29.3

kW) rating. Provide extra fresh air if more

heaters are being used. The minimum

ventilation requirements must be followed

to avoid risks associated with carbon

monoxide poisoning. Make certain these

requirements are met prior to operating

heater.

Example:

A 165,000 Btu/Hr (48.35 kW) heater

requires one of the following:

• a two-car garage door (16 feet [4.88 m] wide

opening) raised four inches (10.16 cm)

• a single-car garage door (9 feet [2.74 m] wide

opening) raised seven inches (17.78 cm)

• two, thirty inch (76.20 cm) windows raised twelve

inches (30.48 cm)

9

107351-01C

Operation

STARTING HEATER

CAUTION: Observe the following:

• Provide a minimum of 3 square feet

(0.28 m

2

) of ventilating area per 100,000

BTU (29.3 kW). If more than one heater is

used, include equivalent ventilating area.

• Provide adequate clearance from people,

animals, and combustible materials - 8 feet

(2.4 m) from heater outlet; 6 feet (1.8 m)

from top; 4 feet (1.2 m) from sides.

• Be sure there is no obstruction in intake

or output openings.

• Be sure heater is on a level, stable surface.

• Depending on thermostat setting, heater

can start immediately when power cord is

connected.

• Be sure electrical circuit is adequate and

properly grounded.

• Locate heater to provide maximum

circulation of the heated air.

1. Turn thermostat knob clockwise to the high

position.

2. Plug extension cord into standard 120 volt/60

hertz, 3-prong grounded outlet.

Note:

Ignitor will

preheat for five seconds, then heater will start.

3. Adjust thermostat knob to the desired setting.

Note:

A cold heater may affect the thermostat setting.

This thermostat is a general-heating control. It is not

intended for precise temperature control. Adjust

thermostat until heater cycles at the desired setting.

Note: If heater fails to start, refer to Troubleshooting,

page 12.

10

107351-01C

HEATER OPERATION

The space heater will cycle on and off to maintain the

temperature set at the thermostat. To determine a

specific temperature, place a thermometer to the

sides or rear of the heater 4 - 6 feet (1.2 - 1.8 m)

above the floor.

STOPPING THE HEATER

1. Set thermostat to lowest setting. Heater will

stop, but will start again when ambient temperature

drops to that setting.

2. To completely stop the heater, disconnect the

plug from the receptacle.

TO RESTART HEATER

1. Unplug extension cord from outlet and wait 10

seconds. (Wait two minutes if heater has been

running.)

2. Repeat steps under

Starting Heater,

page 10.

Operation

11

107351-01C

Troubleshooting

DIAGNOSE MALFUNCTIONS

Symptom

Motor does not start five

seconds after heater is

plugged in

Motor starts and runs but

heater does not ignite

Heater ignites but ignition

control assembly shuts heater

off after a short period of time

Problem

No power to heater

Thermostat setting is too low

Bad electrical connection between motor

and ignition control assembly or ignition

control assembly and power cord

Binding pump rotor

Defective ignition control assembly

Defective motor

No fuel in tank

Pump pressure incorrect

Dirty fuel ﬁlter

Obstruction in nozzle assembly

Water in fuel tank

Bad electrical connection between

ignitor and ignition control assembly

Defective ignitor

Defective ignition control assembly

Pump pressure incorrect

Dirty air intake, air output, and/or lint

filter

Dirty fuel ﬁlter

Obstruction in nozzle assembly

Photocell assembly not properly

installed (not seeing the flame)

Dirty flame sensor

Bad electrical connection between

photocell and ignition control assembly

Defective flame sensor

Defective ignition control assembly

Solution

Check circuit breaker in electrical panel

Turn thermostat knob to a higher setting

Check all electrical connections

See your John Deere dealer

Fill tank with kerosene

See your John Deere dealer

See

Cleaning Fuel Filter,

page 19

See

Cleaning Fuel Nozzle,

page 17

Drain and ﬂush fuel tank with clean

kerosene. See

Storage Location and

Maintenance,

page 20

Check electrical connections

See your John Deere dealer

See

Cleaning Fuel Filter,

page 19

See

Cleaning Fuel Nozzle,

page 17

Make sure photocell boot is properly

seated in bracket

See

Cleaning Flame Sensor,

page 15

Check electrical connections

See your John Deere dealer

WARNING: Never service heater while it is plugged in, operating,

or hot. Severe burns and electrical shock can occur.

WARNING: High voltage!

12

107351-01C

Periodic Service

ADDITIONAL SERVICE INFORMATION

This manual is not a detailed service manual. It has

only information you need for normal operation and

maintenance.

If a technical manual is desired, see your John Deere

dealer for the correct manual.

USING SERVICE RECORDS

1. Keep a record of the number of hours or operation.

2. Check your record regularly to learn when

service is required.

3. Do all the services in the interval section. Then

write the number of hours (from your service record)

and the date in the spaces provided.

Sample Service Record Chart

Date Hours

1 Jun '85 3

6 Jun '85 2 - (5)

7 Jun '85 1 - (6)

11 Jun '85 4 - (10)

17 Jun '85 3 - (13)

150 HOURS

Drain Fuel Tank.

250 HOURS

Clean flame sensor.

Clean air intake filter.

Clean fan.

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

J

O

H

N

D

E

R

E

13

107351-01C

500 HOURS

Clean flame sensor.

Clean air intake filter.

Clean fan.

Clean fuel filter.

Replace air output and lint filters. See your John Deere

dealer for service.

YEARLY

Clean fuel nozzle.

Drain fuel tank.

Clean fuel filter.

Clean flame sensor.

Clean air intake filter.

Clean fan.

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Hours

Date

Periodic Service

CAUTION: Before performing service, discon-

nect power cord from electrical outlet. Failure

to unplug heater could cause serious injury.

Allow heater time to cool. Severe burns and

electrical shock can occur.

DRAINING FUEL TANK

1. Remove drain plug (A).

2. Drain and flush tank with clean fuel.

3. Replace drain plug.

14

A

107351-01C

Periodic Service

CLEANING FLAME SENSOR

1. Remove upper shell (A) from heater by remov-

ing self-tapping screws.

Note:

Nose Cone Guard must be removed first on

model T70.

IMPORTANT: DO NOT bend flame sensor mounting

bracket.

2. Remove sensor (A) from bracket (B) and clean

face of photocell with a soft cloth.

3. Insert sensor into bracket.

4. Install upper shell.

CLEANING AIR INTAKE FILTER

1. Remove upper shell and plastic fan guard.

2. Remove filter (A) from filter cover (B).

3. Clean filter in mild detergent and warm water.

Dry thoroughly before reinstallation. Replace if

needed.

IMPORTANT: DO NOT oil filter or pump.

There are two other filters inside the pump assembly;

an air output filter and a lint filter. See your John Deere

dealer for service.

15

A

B

A

B

107351-01C

Periodic Service

WARNING: High Voltage!

REPLACING FUSE

1. Unplug heater.

2. Remove side cover screws to expose ignition

control assembly.

3. Remove fuse cover (A).

4. Remove fuse from fuse clips (B).

5. Replace fuse (C) with fuse of the same type

and rating (GMA-10). Do not substitute a fuse with a

higher current rating.

6. Replace fuse cover.

7. Replace side cover.

CLEANING FAN

CAUTION: Fan blades are sharp. Carefully

work around blades or wear gloves when

cleaning.

Flush

IMPORTANT: Remove fan from motor shaft before

removing motor from heater. The weight of the motor

resting on the fan could damage the fan pitch.

1. Remove upper shell and fan guard.

2. Loosen setscrew (A) which holds fan (B) to

motor shaft (C).

3. Slip fan off motor shaft.

4. Clean fan using a soft cloth moistened with

kerosene or solvent.

5. Dry fan thoroughly.

6. Replace fan on motor shaft. Place fan hub ﬂush

with end of motor shaft.

7. Place setscrew on ﬂat of shaft. Tighten set-

screw ﬁrmly (40 to 50 in-lbs/4.5 to 5.6 N-m).

8. Replace fan guard and upper shell.

16

B

C

A

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Desa Electric Heater T70 Manuel utilisateur

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