John Deere AC-350 OPERATOR’S MANUAL

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AC-350

SPACE HEATER

Introduction

THANK YOU for purchasing a John Deere product.

READTHIS MANUALcarefully to learn how to operate and service your machine correctly. Failure to do so could result in personal injury or equipment damage. This manual and safety signs on your machine may also be available in other languages. (See your John Deere dealer to order.)

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.

GENERAL HAZARD WARNING: FAILURETOCOMPLYWITHTHEPRECAUTIONS AND INSTRUCTIONS PROVIDED WITH THIS HEATER, CAN RESULT IN DEATH, SERIOUS BODILY INJURY AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE, EXPOSITION, BURN, ASPHYXIATION, AND/OR CARBON MONOXIDE POISONING.

ONLYPERSONS WHO CAN UNDERSTANDAND FOLLOW THE INSTRUCTIONS SHOULD USE OR SERVICE THIS HEATER.

IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.

WARNING: FIRE, BURN, INHALATION AND EXPLOSION HAZARD. KEEP SOLID COMBUSTIBLES, SUCH AS BUILDING MATERIALS, PAPER OR CARDBOARD, A SAFE DISTANCE AWAY FROM THE HEATER AS RECOMMENDED BY THE INSTRUCTIONS NEVER USE THE HEATER IN SPACES WHICH DOORMAYCONTAINVOLATILEORAIRBORNE COMBUSTIBLES OR PRODUCTS SUCH AS GASOLINE, SOLVENTS, PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.

WARNING: NOT FOR HOME OR RECREATIONAL VEHICLE USE.

The SERIAL NUMBER is located in the Specification or Identification Numbers section. 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 from your John Deere dealer for customers who operate and maintain their equipment as described in this manual. The warranty is explained on the warranty certificate shown in this manual.

This warranty provides you the assurance that your dealer will back products where defects appear within the warranty period. Should the equipment be abused, or modified to change its performance beyond the original factory specifications, the warranty will become void.

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Operator’s Manual

Contents

 

Page

Safety ........................................................................

4

Controls .................................................................

11

Preparation...............................................................

12

Operation ................................................................

14

Troubleshooting .....................................................

16

Service ....................................................................

19

Storage ....................................................................

24

Specifications .........................................................

25

Wire Diagram............................................................

26

Warranty ..................................................................

27

Notes ...................................................................

28-29

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.

Operator’s Manual

3

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 attention to safety messages in this manual.

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.

Read this owner’s manual carefully and completely before trying to assemble, operate, or service this space heater. Improperuseofthisspace heater cancauseseriousinjury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this space heater.

If you do no understand any part of this manual and need assistance, contact your John Deere dealer.

 

 

 

 

 

 

 

 

 

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Operator’s Manual

CARBON MONOXIDE - POISONOUS GAS

DANGER: CARBON MONOXIDE POISONING MAY LEAD TO DEATH!

Space heaters exhaust contains carbon monoxide - a poisonous gas that can kill you. You CAN NOT smell or see this gas.

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or nausea. If you have these signs, the space heater may not be working properly. Get fresh air at once! Have space 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.

Never use a space heater in enclosed or partially-enclosed spaces without proper ventilation. Use only in well-vented areas. Before using space heater, provide at least a three-square-foot (2800 square cm) opening of fresh, outside air for each 100,000 Btu / Hr (30 kw) of rating. Space heaters can produce high levels of carbon monoxide very quickly. When you use a space heater, remember that you cannot smell or see carbon monoxide. Even if you can’t smell exhaust fumes, you may still be exposed to carbon monoxide.

If you start to feel sick, dizzy, or weak while using a space heater, get to fresh air RIGHTAWAY. DO NOT DELAY. The carbon monoxide from space heaters can rapidly lead to full incapacitation and death.

If you experience serious symptoms, get medical attention immediately. Inform medical staff that carbon monoxide poisoning is suspected. If you experienced symptoms while indoors, have someone call the fire department to determine when it is safe to re-enter the building.

NEVER operate the space heater in an explosive atmosphere, near combustible materials or where ventilation is not sufficient to carry away exhaust fumes. Exhaust fumes can cause serious injury or death.

NEVER run space heaters inside homes, garages, sheds, or other semienclosed spaces without proper ventilation.These spaces can trap poisonous gases EVEN IF you run a fan or open doors and windows. Use only in wellvented areas. Before using space heater, provide at least a three-square-foot (2800 square cm) opening of fresh, outside air for each 100,000 Btu / Hr (30 kw) of rating.

If you start to feel sick, dizzy, or weak while using the space heater, shut if off and get fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.

Install battery-operated carbon monoxide alarms or plug-in carbon monoxide alarms with battery back-up in your home, according to the manufacturer’s installation instructions. The carbon monoxide alarms should be certified to the requirements of the latest safety standards for carbon monoxide alarms. (UL 2034, IAS 6-96, or CSA 6.19.01).

Test your carbon monoxide alarm frequently and replace dead batteries.

Operator’s Manual

5

SAFETY WARNING WHEN REFUELING

Use only kerosene or #1 fuel oil to avoid risk of fire or explosion. Never use gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels. Personnel involved with fueling shall be qualified and thoroughly familiar with the manufacturer’s instructions and applicable regulations regarding the safe fueling of heating units.

Only the type of fuel specified on the space heater’s data plate shall be used.

All flame, including the pilot light, if any, shall be extinguished and the space heater allowed to cool, prior to fueling.

During fueling, all fuel lines and fuel-line connections shall be inspected for leaks. Any leaks shall be repaired prior to returning the space heater to service.

At no time shall more than one day’s supply of space heater fuel be stored inside a building in the vicinity of the space heater. Bulk fuel storage shall be outside the structure.

All fuel storage shall be located a minimum of 25 feet (762cm) from space heaters, torches, welding equipment, and similar sources of ignition (exception: the fuel reservoir integral with the space heater unit).

Whenever possible, fuel storage shall be confined 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 authority having jurisdiction.

Observe all safety regulations for the safe handling of fuel. Handle fuel in safety containers. If the container does not have a spout, use a funnel.

Do not overfill the fuel tank, leave room for the fuel to expand.

Do not refill fuel tank while the unit is running. Before refueling the space heater, turn it off and let it cool down.

Fill the tank only on an area of bare ground. While fueling the tank, keep heat, sparks and open flame away. Carefully clean up any spilled fuel before starting the unit.

Always fill fuel tank in an area with plenty of ventilation to avoid inhaling dangerous fumes.

NEVER store fuel for your space heater in the home. Gasoline, propane, kerosene, and other flammable liquids should be stored outside of living areas in properly-labeled, non-glass safety containers. Do not store them near a fuel-burning appliance, such as a natural gas water heater in a garage. If the fuel is spilled or the container is not sealed properly, invisible vapors from the fuel can travel along the ground and can be ignited by the

appliance’s pilot light or by arcs from electric switches in the appliance.

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Operator’s Manual

ELECTRICAL HAZARDS

DANGERIMPROPER CONNECTION OF THE EQUIPMENTGROUNDING CONDUCTOR CAN RESULT IN A RISK OF ELECTROCUTION.CHECK WITHAQUALIFIEDELECTRICIAN ORSERVICEPERSONIFYOUAREINDOUBTASTOWHETHER

THE UNIT IS PROPERLY GROUNDED.

Use only the electrical voltage and frequency specified on model plate.

Space heater must be grounded. Use only a properly grounded three-wire extension cord. Plug into grounded outlet only. If it should malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock.

The space heater is a potential source of electrical shock if not kept dry. Keep the space heater dry and do not use in rain or wet conditions. To protect from moisture, operate it on a dry surface under an open, canopylike structure. Dry your hands if wet before touching the space heater.

Check that the entire cord is free of cuts or tears and that the plug has all three prongs, especially a grounding pin.

Operator’s Manual

7

IMPORTANT SAFETY INSTRUCTIONS

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.

1.Use only in areas free of flammable vapors or high dust content.

2.Minimum heater clearances from combustible materials: Outlet: 8 Ft. (2.44 m), Sides: 4 Ft. (1.2 m), Top: 6 Ft. (1.83 m), Rear: 4 Ft. (1.2 m)

3.Locate space heater on a stable and level surface while hot or operating or a fire may occur.

4.Use only in well-vented areas. Before using space heater, provide at least a three-square-foot (2800 square cm) opening of fresh, outside air for each 100,000 Btu / Hr (30 kw) of rating.

5.Keep children and animals away from space heater at all times.

6.Use space heater only in accordance with local ordinances and codes.

7.Keep space heater area clear and free from combustible materials, gasoline, paint thinner and other flammable vapors and liquids.

8.Never use space heater in living or sleeping areas.

9.Never leave a space heater plugged in without adult supervision if children or animals are likely to be present. Do not leave heater unattended.

10.Never move, handle or service a hot or operating heater. Severe burns may result. You must wait 15 minutes after turning heater off.

11.Never attach duct work to front or rear of space heater.

12.Space 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 10feet(304.8cm).Itisfurtherrecommendedthattheseenclosure materials be of a fire retardant nature. These enclosure materials

shall be securely fastened to prevent them from igniting or from upsetting the space heater due to wind action.

13.Unplug space heater when not in use.

14.Never block air inlet (rear) or air outlet (front) of space heater.

15.This product has been approved for use in the Commonwealth of Massachusetts.

16.Use only the hose and factory preset regulator provided with the heater.

17.Use only with the electrical voltage and frequency specified on model plate.

18.For indoor use only. Do not use heater outdoors.

 

 

 

 

 

 

 

 

 

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Operator’s Manual

IMPORTANT SAFETY INSTRUCTIONS

19.When moving or storing heater, keep heater in a level position or fuel spillage may occur.

20.Check heater for damage before each use. Do not use a damaged heater.

21.Check hose before each use of heater. If highly worn or cut, replace with hose specified by manufacturer before using heater.

22.Keep heater away from strong drafts, wind, water spray, rain or dripping water.

23.To prevent injury, wear gloves when handling heater.

24.Do not alter heater. Keep heater in its original state.

25.Do not use heater if altered.

26.Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use generic parts. Improper replacement parts could cause serious or fatal injuries.

27.This heater is equipped with a thermostat. Plugged in heater may start at anytime!

28.Never start heater when combustion chamber is hot or if fuel has accumulated in combustion chamber.

29.Nevermove,handle,refuelorserviceahot,operatingorpluggedin heater.

SAVE THESE INSTRUCTIONS

 

 

 

 

 

 

 

 

 

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Operator’s Manual

9

WEAR PROTECTIVE CLOTHING

Wear close fitting clothing and safetyequipment appropriate to the job.

Wear a suitable hearing protective device such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises.

Operating equipment safely requires the full attention of the operator. Do not wear radio or music headphones while operating machine.

PREPARE FOR EMERGENCIES

Keep a first aid kit and fire extinguisher handy.

Keep emergency numbers for doctors, ambulance service, hospital and fire department near your telephone.

Be prepared if a fire starts.

INSPECT SPACE HEATER

Be sure all covers, guards and shields are tight and in place.

Locate all operating controls and safety labels.

Inspect power cord for damage before using. There is a hazard of electrical shock from crushing, cutting or heat damage.

Remove all packing items applied to space heater for

shipment. Remove all items from carton. Check items for any shipping damage. If space heater is damaged, promptly

inform dealer where you bought space heater.

SERVICE SPACE HEATER SAFELY

Before servicing the space heater, disconnect all equipment and battery (if equipped) and allow unit to cool down.

Service space heater in a clean dry flat area.

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Operator’s Manual

Controls

CONTROLS

AC-350

A

B

H

G

F

 

E

C

 

 

D

--A

Hot Air Outlet (Front)

--D

Flame-Out Control Reset Button

--G

Fuel Cap

B --

Upper Shell

E --

Thermostat

H --

Lower Shell

C --

Power Cord

F --

Fuel Tank

 

 

 

 

 

 

 

 

Operator’s Manual

11

Preparation

VENTILATION

WARNING:FOLLOWTHEMINIMUMFRESH,OUTSIDE AIR VENTILATION REQUIREMENTS. IF PROPER FRESH, OUTSIDE AIR VENTILATION IS NOT

PROVIDED, CARBON MONOXIDE POISONING CANOCCUR.PROVIDEPROPERFRESH,OUTSIDE AIR VENTILATION BEFORE RUNNING HEATER.

Fresh Air Opening Requirements:

Heater Size Square Feet Opening 350,000 Btu/Hr 10.5

Note: If you use more than one heater, provide extra fresh air. Provide a fresh air opening of at least three square feet for each 100,000 Btu/Hr rating.

FUELS

WARNING: USE ONLY KEROSENE OR #1 FUEL OIL TO AVOID RISK OF FIRE OR EXPLOSION. NEVER USE GASOLINE, NAPHTHA, PAINT THINNERS, ALCOHOL OR OTHER HIGHLY FLAMMABLE

FUELS.

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

carbon build-up on spark plug

the need of non-toxic anti-icer in fuel during very cold weather

IMPORTANT: Use a KEROSENE ONLY storage container. Be sure storage container is clean. Foreign matter such as rust, dirt or water will cause flame-out control to shut down heater. Foreign matter may also require you to clean fuel system often.

12

Operator’s Manual

Preparation

THEORY OF OPERATION

The Fuel System: The motor turns the fuel pump. The fuel pump pulls fuel from the fuel tank. The fuel pump pushes fuel through a filter and a solenoid valve and out the burner head nozzle. A fine mist of fuel is sprayed into the combustion chamber.

The Air System: The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air.

The Ignition System: The electronic ignitor sends voltage to the spark plug. The spark plug ignites the fuel and air mixture.

The Flame-Out Control System: This system causes the heater to shut down if the flame goes out. It also allows the fan to continue running after normal shutdown of heater. This cools the combustion chamber.

Burner

Solenoid

 

 

 

Combustion Chamber Spark Plug Head

Valve

Fan

Motor

Fuel Pump/

 

 

 

 

Fuel Filter

Clean

 

 

 

 

Heated

 

 

 

Cool

Air Out

 

 

 

 

 

 

Air In

 

 

 

 

 

 

 

Fuel Pickup

Nozzle

 

 

Line

 

 

Fuel

 

 

 

Fuel Tank

Fuel Line To

 

Filter

 

Electronic

 

Solenoid Valve

Air for

Ignitor

Combustion

Fuel

 

and Heating

 

 

Operator’s Manual

13

Operation

OPERATION

IMPORTANT: Review and understand the warnings in the Safety Information section. They are needed to safely operate this space heater. Follow all local ordinances and codes when using this space heater.

WARNING: FOLLOW THE MINIMUM FRESH, OUTSIDE AIR VENTILATION

REQUIREMENTS. IF PROPER FRESH,

OUTSIDE AIR VENTILATION IS NOT

PROVIDED, CARBON MONOXIDE

POISONING CAN OCCUR. PROVIDE PROPER FRESH, OUTSIDE AIR VENTILATION BEFORE RUNNING HEATER.

START SPACE HEATER:

1.Follow all ventilation and safety information.

2.Locate heater to provide maximum circulation of the heated air. Follow all location requirements noted in the Safety Information section of this manual.

3.Fill fuel tank with kerosene or #1 fuel oil.

4.Attach fuel cap.

5.Set thermostat dial to desired temperature.

Note:Thermostat setting must be higher than surrounding

air temperature.

6.Plug power cord of heater into three-prong, grounded extension cord. Extension cord must be at least 6 feet long.

WARNING: USE ONLY A THREE-PRONG, GROUNDED EXTENSION CORD. USE CORD WITH PROPER WIRE SIZE TO ASSURE 120

VOLT OPERATION. (FIG. 1)

7.Plug extension cord into standard 120 volt/60 hertz, three-hole, grounded outlet.

8.The motor will start when extension cord is plugged into outlet. The heater should ignite at once. If heater does not ignite, restart heater. To restart heater, wait 60 seconds, then push in flame-out control reset button. Flame-out control reset button is at rear of heater near power cord (Fig. 2).

Note:Acold 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 starting heater for first time, you may need to prime thepump.Ifequipped,slightlyopenbleedervalveofpump to allow air to escape. Quickly close valve once fuel is seen. Wipe up any excess fuel. If equipped with canister fuel filter, remove the canister bottom and fill with fuel. Reassemblefilter.Wipeupanyexcessfuel.Youmayalso have to do this after taking heater out of storage.

Extension Cord Size Requirement

Length of Cord:

Rated Cord:

Up to 100 feet (30.48 m)

14 AWG

101 to 200 feet (30.78 to 60.96 m)

12 AWG

201 to 300 feet (61.26 to 91.44 m)

10 AWG

301 to 400 feet (191.74 to 121.92 m)

8 AWG

401 to 500 feet (122.22 to 152.40 m)

6 AWG

(Fig. 1)

Flame-Out

Control

Reset Button

(Fig. 2)

14

Operator’s Manual

Operation

OPERATION (CONTINUED)

STOP SPACE HEATER:

CAUTION: NEVER UNPLUG HEATER WHILE HEATER IS RUNNING. HEATER MUST GO THROUGHPURGECYCLE.THEPURGECYCLE COOLSTHECOMBUSTIONCHAMBER.DAMAGE TO HEATER CAN OCCUR IF COMBUSTION CHAMBER IS NOT COOLED. DO NOT RESTART HEATER UNTIL PURGE CYCLE IS COMPLETE.

1.Turn thermostat dial to lowest temperature setting. This will cause heater flame to go out. The motor will continue to run during the purge cycle. This allows the fan to cool the combustion chamber. When the purge cycle is finished, the motor will stop. Do not unplug heater until purge cycle is finished.

2.Unplug extension cord from outlet.

3.To temporarily stop heater, set thermostat at a temperature lower than air around heater. Heater will cycle back on if air temperature around heater matches thermostat setting.

TO RESTART SPACE HEATER:

CAUTION: DO NOT RESTART HEATER UNTIL PURGE CYCLE IS FINISHED. THE PURGE CYCLE COOLS THE COMBUSTION CHAMBER.

1.Wait until purge cycle is finished after stopping heater.

2.Repeat steps under "Start Space Heater".

Operator’s Manual

15

Troubleshooting

WARNING: HIGH VOLTAGE. NEVER SERVICE SPACE HEATER WHILE IT IS PLUGGED IN, OPERATING, OR HOT. SEVERE BURNS AND ELECTRICAL SHOCK CAN OCCUR.

Symptom

Problem

Motor does not start when heater is plugged in and thermostat setting is higher than surrounding air temperature.

No power or low voltage at heater due to:

a.Damaged power cord or extension cord.

b.Wrong size extension cord.

c.Heater plugged into outlet with voltage lower than 120 volt.

Loose electrical connections.

Motor overload protector tripped due to:

a.Dirty fan.

b.Debris pulled into fan area by fan.

c.Binding pump.

d.Low voltage.

Flame-out control not reset.

Damaged flame-out control.

Damaged power relay.

Damaged thermostat.

Binding pump.

Solution

a.Check condition of power cord or extension cord. Repair or replace if damaged.

b.Use extension cord with proper wire size (see Start Heater).

c.Make sure heater is plugged into 120 volt/60 hertz outlet.

Check connections. Tighten if loose.

a.See "Maintenance: Fan Blades and Air Deflectors".

b.Remove debris from fan and fan guard area.

c.Turn fan by hand. If fan is hard to turn, see "Maintenance: Pump".

d.Follow the extension cord steps listed above (a & b).

Note: Be sure to reset motor overload protector by pressing reset button on top of motor.

Press and release flame-out control reset button.

Replace flame-out control.

Replace power relay.

Replace thermostat.

Turn fan by hand. If fan is hard to turn, see "Maintenance: Pump".

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Operator’s Manual

Troubleshooting

WARNING: HIGH VOLTAGE. NEVER SERVICE SPACE HEATER WHILE IT IS PLUGGED IN, OPERATING, OR HOT. SEVERE BURNS AND ELECTRICAL SHOCK CAN OCCUR.

Symptom

Heater will not ignite, but motor runs for a short period of time.

Problem

Solution

Fuel tank empty.

Add fuel to tank.

Water in fuel.

Check fuel tank for bubbles of water

 

in bottom. If found, remove fuel (see

 

Storage). Clean tank and fuel filters

 

(see Maintenance: Fuel Filters). Fill

 

with clean fuel.

Wrong fuel.

Remove wrong fuel (see Storage).

 

Clean tank and fuel filters (see Main-

 

tenance: Fuel Filters). Fill with correct

 

fuel.

Dirt in nozzle.

Replace nozzle (see Maintenance:

 

Nozzle).

Very low temperature may

Move heater to warmer place until fuel

cause fuel to thicken and not

flows freely.

flow.

 

Dirty fuel filters.

Clean fuel filters (see Maintenance:Fuel

 

Filters).

Wrong pump pressure.

Adjust pump pressure (see

 

Maintenance: Pump Pressure

 

Adjustment).

Spark plug wire disconnected

Connect spark plug wire to spark plug.

from plug.

 

Spark plug problems due to:

 

a. Wrong gap.

a. Adjust electrode gap to 0.075"

 

(see Maintenance: Spark Plug).

b. Plug wet with fuel.

b. Clean fuel from spark plug with

 

clean, soft cloth.

c. Carbon deposits on plug.

c. Replace plug if heavily coated with

 

carbon (see Maintenance: Spark `

 

Plug).

d. Damaged plug.

d. Inspect plug for worn or eroded

 

electrodes. If found, replace plug

 

(see Maintenance: Spark Plug).

Solenoid valve not opening.

Check electrical connections and

 

voltage to solenoid. If good, replace

 

solenoid valve.

WARNING: HIGH VOLTAGE!

Damaged electronic ignitor.

Replace electronic ignitor.

Operator’s Manual

17

Troubleshooting

WARNING: HIGH VOLTAGE. NEVER SERVICE SPACE HEATER WHILE IT IS PLUGGED IN, OPERATING, OR HOT. SEVERE BURNS AND ELECTRICAL SHOCK CAN OCCUR.

Symptom

Heater ignites, but flameout control shuts off heater after a short period of time.

Heater burns, but puffs of smoke can be seen. Heater does not burn steady.

Heater burns with odor. Heater smokes continuously.

Problem

Wrong pump pressure.

Dirty fuel filters.

Dirt in nozzle.

Dirty photocell lens.

Open or damaged photocell. Bad flame-out control. Damaged fan switch.

Wrong pump pressure

Heater almost out of fuel Water condensation in fuel tank

Wrong fuel

Dirty fuel filters

Air leak in suction system

Dirty nozzle

Low voltage causing motor to operate below rated speed

Loose fuel line

Solution

Adjust pump pressure (see Maintenance: Pump Pressure Adjustment).

Clean fuel filters (Maintenance: Fuel Filters).

Replace nozzle (see Maintenance: Nozzle).

Clean photocell lens with clean cotton swab.

Replace photocell.

Replace flame-out control.

Replace fan switch.

Adjust pump pressure (see Maintenance: Pump Pressure Adjustment).

Add fuel to tank

Check fuel tank for bubbles of water in bottom. If found, remove fuel (see Storage). Clean tank and fuel filters (see Maintenance: Fuel Filters). Fill with clean fuel

Remove wrong fuel (see Storage). Clean tank and fuel filters (see Maintenance: Fuel Filters). Fill with correct fuel

Clean fuel filters (see Maintenance: Fuel Filters).

Tighten all fuel line connections (see Maintenance: Fuel Lines).

Replace nozzle (see Maintenance: Nozzles).

Check voltage at heater. Voltage at heater should be not less than 90% of rated voltage (108V minimum for 120V heaters)

Check and tighten all fuel line connections (see Maintenance: Fuel Lines).

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Operator’s Manual

Service

MAINTENANCE

PREVENTATIVE MAINTENANCE SCHEDULE:

WARNING: HIGH VOLTAGE. NEVER SERVICE SPACE HEATER WHILE IT IS PLUGGED IN, OPERATING, OR HOT. SEVERE BURNS AND ELECTRICAL SHOCK CAN OCCUR.

Item

How Often

How to

Fuel tank

Flush every 150-200 hours of

See "Storage".

 

operation or as needed

 

Filler Neck Screen

Check for particles in fuel

Lift out of fuel tank and rinse with

 

when filling fuel tank. Clean

clean kerosene

 

when dirty

 

Fuel Filter Assembly

Clean twice a heating season

See "Maintenance: Fuel Filters".

(Fuel Tank)

or replace as needed

 

Fuel Filter Lines

Check and tighten loose con-

See "Maintenance: Fuel Filters".

 

nections occasionally

 

Fuel Filter (In Pump or

Clean fuel filter element every

See "Maintenance: Fuel Filters".

External Canister)

250 hours

 

Spark Plug

Clean and regap every 300

See "Maintenance: Spark Plug".

 

hours of operation or replace

 

 

as needed

 

Fan Blades and Air

Clean each season or as

Deflectors

needed

Air Passages around

Check each season for dirt

Burner Head

and debris

Motor

Not required, permanently

 

lubricated

See "Maintenance: Fan Blades

and Air Deflectors".

Remove debris and trash with a clean, soft cloth

Operator’s Manual

19

Service

MAINTENANCE:

WARNING: TO AVOID RISK OF BURN AND ELECTRICAL SHOCK, NEVER ATTEMPT TO SERVICE SPACE HEATER WHILE IT IS

PLUGGED IN, OPERATING, OR HOT.

KEEP HEATER CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS

DO NOT BLOCK THE FLOW OF COMBUSTION OR VENTILATION AIR.

1.Keep heater clean. Clean heater annually or as needed to remove dust and debris. If heater is dirty or dusty, clean heater with a damp cloth. Use household cleaners on difficult spots.

2.Inspect heater before each use.

3.Have heater inspected yearly by a qualified service agency.

4.Keep inside of heater free from combustible and foreign objects. Remove motor and other internal parts if needed to clean inside of heater.

5.Clean fan blades each season or as needed.

20

Operator’s Manual

Service

MAINTENANCE (CONTINUED):

WARNING: NEVER SERVICE HEATER WHILE IT IS PLUGGED IN, CONNECTED TO PROPANE SUPPLY, OPERATING OR HOT.SEVEREBURNSANDELECTRICAL SHOCK CAN OCCUR.

ONLY A QUALIFIED SERVICE PERSON

SHOULD SERVICE AND REPAIR

HEATER.

UPPER SHELL REMOVAL:

1.Remove screws along each side and top of heater using 5/16" nut-driver. These screws attach upper and lower shells together (Fig. 3).

2.Lift upper shell off.

FAN BLADES AND AIR DEFLECTORS:

1.Remove upper shell. (see Mantenance: Upper Shell Removal).

2.Clean fan blades and air deflectors with clean, soft cloth moistened with kerosene or solvent (Fig. 4).

3.Dry fan blades and air deflectors thoroughly.

4.Replace upper shell.

SPARK PLUG:

1.Remove upper shell. (see Mantenance: Upper Shell Removal).

2.Remove spark plug wire from spark plug (Fig. 5).

3.Remove spark plug from burner head using 13/16" open-end wrench (Fig. 5).

4.Replace spark plug if damaged or heavily coated with carbon.

5.Clean and regap spark plug electrodes to .075 inch (Fig. 6).

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace upper shell.

Upper Shell

(Fig. 3)

Air

Deflector

Fan

Blade

(Fig. 4)

Burner

Spark Plug

Head

 

 

Spark Plug

 

Wire

(Fig. 5)

.075 inch

(Fig. 6)

Operator’s Manual

21

John Deere AC-350 OPERATOR’S MANUAL

Service

NOZZLE:

1.Remove upper shell. (see Mantenance: Upper Shell Removal).

2.Remove fuel line from solenoid valve using 7/16" wrench.

3.Remove spark plug wire from spark plug.

4.Remove spark plug from burner head using 13/16" openend wrench.

5.Remove five screws using 5/16" nut-driver and remove burner head from combustion chamber.

6.Place burner head into vise and lightly tighten.

7.Carefully remove nozzle from burner head using 5/8" socket wrench (Fig. 7).

8.Inspect nozzle for damage. If damaged or clogged, replace nozzle.

9.Make sure plug is in place on burner head.

10.Replace nozzle into burner head and tighten firmly (175-200 inch-pounds).

11.Attach burner head to combustion chamber.

12.Install spark plug in burner head.

13.Attach spark plug wire to spark plug.

14.Attach fuel line to solenoid valve. Tighten firmly.

15.Replace upper shell.

PUMP PRESSURE ADJUSTMENT:

1.Remove pressure gauge plug from fuel pump port marked “GAUGE.”

2.Install pressure gauge to fuel pump port marked “GAUGE” (Fig. 8).

3.Start heater. Allow motor to reach full speed.

4.Adjust pressure. Use small flat blade screwdriver to turn slotted screw at fuel pump pressure adjusting port. Turn screw clockwise to increase pressure. Turn screw counterclockwise to decrease pressure. See specifications in Figure 8 for correct pressure for each model.

5.Stop heater.

6.Remove pressure gauge. Replace pressure gauge plug in fuel pump port marked “GAUGE.”

PUMP:

(Procedure if Pump is Binding)

1.Remove upper shell (Maintenance: Upper Shell Removal).

2.Loosen hex screw on flange clamp at rear of motor with 5/16" nut-driver (Fig. 9).

3.Turn fan with hand (Fig. 10).

4.If fan turns freely, tighten screw on flange clamp.

5.If fan does not turn freely, replace pump.

6.Replace upper shell.

 

Plug

Spark Plug

 

 

Nozzle

 

 

 

 

Spark Plug

Burner

 

Wire

Head

Fuel Line

Solenoid Valve

 

(Fig. 7)

Pump Pressure

100 PSI

Pressure

Gauge

 

Fuel Pump

Fuel Pump Port

Port Marked

"PRESS ADJ"

Marked "GAUGE"

 

(Fig. 8)

Hex Screw

On Flange

Clamp

(Fig. 9)

(Fig. 10)

22

Operator’s Manual

Service

FUEL LINES:

(Procedure for Tightening Fuel Lines)

1.Remove upper shell (see Mantenance: Upper Shell Removal).

2.Use an adjustable wrench as a backup on fittings.

3.Use 7/16" wrench and tighten fuel lines at solenoid valve, pump and fuel filter canister (if equipped) (Fig. 11 and 12).

Burner Head

Fuel

Line

Solenoid

Valve

FUEL FILTERS:

Tank Fuel Filter

1.Disconnect fuel lines from pump and fuel filter canister (if equipped) with 7/16" wrench (Fig. 13 or 14).

2.Carefully pry fuel filter loose from fuel tank with flat end of screwdriver.

3.Inspect fuel filter for water or dirt.

4.Rinse fuel filter and fuel lines with clean kerosene.

5.Replace fuel filter into fuel tank.

6.Connect fuel lines to pump and fuel filter canister (if equipped).

Filter/Canister External To Pump

1.Unscrew canister bottom from canister top with adjustable pliers.

2.Remove fuel filter and gasket from canister bottom (Fig. 14).

3.Inspect canister bottom and fuel filter for water droplets or dirt.

4.Rinse canister bottom in clean kerosene.

5.Wipe inside of canister bottom dry with clean cloth.

6.Rinse fuel filter in clean kerosene.

7.Put clean fuel filter and gasket back in canister bottom.

8.Screw canister bottom into canister top.

9.Tighten securely. Check for leaks.

(Fig. 11)

Fuel

Pump

Fuel

Lines

(Fig. 12)

Fuel Pump (Filter

Under Cover)

Fuel

Lines

Fuel

Filter

(Fig. 13)

 

Canister

 

Top

 

Gasket

 

Fuel

 

Filter

Fuel

 

Lines

Canister

 

 

Bottom

(Fig. 14)

Operator’s Manual

23

Storage

STORAGE

Note: If shipping, transport companies require fuel tanks to be empty.

1.Drain all fuel from fuel lines and pump/filter (see Maintenance: Fuel Filters).

2.Clean and flush fuel filter in fuel pump if equipped (see Maintenance: Fuel Filters).

3.Remove drain plug and drain fuel tank.

4.Replace drain plug.

5.If any debris is noted in old fuel, add 1 or 2 quarts of clean kerosene to tank, stir and drain again. This will prevent excess debris from clogging filters during future use.

6.Replace fuel cap or drain plug. Properly dispose of old and dirty fuel. Check with local automotive service stations that recycle oil.

7.Add two gallons of clean kerosene or #1 fuel oil to fuel tank.

8.Replace fuel cap.

9.Operate heater for 5 minutes (see Operation).

10.Stop heater and let cool completely.

11.Remove drain plug and drain fuel tank.

12.Replace drain plug.

13.Properly dispose of old and dirty fuel.

14.If storing, store heater in a dry location. Make sure storage place is free of dust and corrosive fumes.

IMPORTANT: Do not store kerosene over summer months for use during next heating season. Using old fuel could damage heater.

24

Operator’s Manual

Specifications

ITEM

SPECIFICATION

Model Size

AC-350

Output Rating (BTU / Hr)

350,000

Fuel

Use only Kerosene or #1 Fuel Oil

Fuel Tank Capacity

30 Gallons / 113.5 Liters

Fuel Consumption:

 

(Gal. Per Hr / Liters Per Hr)

2.25 / 8.51

Fuel Pump Pressure

100 PSI

Motor

1725 RPM

Electric Requirements

115V / 60Hz

Amperage (Normal Run)

7.1

Spark Plug Gap

0.075"

Space Heater Weight - Dry

 

(Approximate Pounds /

 

Kilograms)

180 / 81.6

Space Heater Weight - Full Tank

 

(Approximate Pounds /

 

Kilograms)

390 / 176.9

RECORD SERIAL NUMBER

Write you model number, machine serial number and date of purchase in the spaces provided below. Your dealer needs this information when ordering parts.

Model No.______________________________________________

Machine Serial No._______________________________________

Date of Purchase ________________________________________

(To be filled in by purchaser)

Operator’s Manual

25

Wire Diagram

26

Operator’s Manual

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