L.B. White CP400AK Manual

1-K
Kerosene
Congratulations!
You have purchased the finest kerosene portable forced air construction heater available.
Your new L.B. White heater incorporates the benefits from the most experienced
manufacturer of heating products using state-of-the-art technology.
We, at L.B. White, thank you for your confidence in our products and welcome any
suggestions or comments you may have...call us, toll-free, at [phone].
Owner's Manual and Instructions
Tradesman Kerosene Heaters
ATTENTION ALL USERS
This heater has been tested and evaluated by C.S.A. International in accordance with
the requirements of Standard ANSI A10.10-1990, CAN/CSA B140.87 and CSA
B140.8 - 1967 and is listed and approved as a Kerosene forced-air construction
heater with application for the temporary heating of buildings under construction,
alteration, or repair. If you are considering using this product for any application
other than its intended use, then please contact the L.B. White Co., Inc.
MODELS OUTPUT (BTUH) FUEL
CP400AK 400,000
CP650AK 650,000
Certification by:
150-26904

WARNING
Fire and Explosion Hazard
■Not for home or recreational vehicle use.
■Installation of this heater in a home or recreational
vehicle may result in a fire or explosion.
■Fire or explosions can cause property damage or loss
of life.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
WARNING
Fire and Explosion Hazard
■Keep solid combustibles a safe distance away from
the heater.
■Solid combustibles include wood, paper, or plastic
products, building materials and dust.
■Do not use the heater in spaces which contain or may
contain volatile or airborne combustibles.
■Volatile or airborne combustibles include gasoline,
solvents, paint thinner, dust particles or unknown
chemicals.
■Failure to follow these instructions may result in a fire
or explosion.
■Fire or explosions can lead to property damage,
personal injury or loss of life.
GENERAL HAZARD WARNING
■Failure to comply with the precautions and instructions provided with this heater, can result in:
— Death
— Serious bodily injury or burns
— Property damage or loss from fire or explosion
— Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning
— Electrical shock
■Read this Owner’s Manual before installing or using this product.
■Only properly-trained service people should repair or install this heater.
■Save this Owner’s Manual for future use and reference.
■Owner’s Manuals and replacement labels are available at no charge. For assistance, contact L.B. White at 800-
345-7200.
2

SECTION PAGE
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Information
Hazard Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation & Assembly
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Operation
Overview of Heater Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
The Safety System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Fuel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Fueling Your Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
To Start Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
To Shutdown Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
To Restart Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Longterm Storage of Your Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Maintenance
Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Air Input Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Air Output /Lint Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Fan Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Photocell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Pump Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Replace Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Parts Identification
Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Table of Contents
General Information
This Owner's Manual includes all options and accessories
commonly used on this heater.
When calling for technical service assistance, or for other
specific information, always have model number,
configuration number and serial number available. This
information is contained on the dataplate.
This manual will instruct you in the operation and care of
your unit. Have your qualified installer review this manual
with you so that you fully understand the heater and how it
functions.
The installation, repair, and servicing of the heater
requires continuing expert training and knowledge of
kerosene heaters and should not be attempted by anyone
who is not so qualified.
Contact your local L.B. White distributor or the L.B. White
Co., Inc. for assistance, or if you have any questions about
the use of the equipment or its application.
The L.B. White Co., Inc. has a policy of continuous product
improvement. It reserves the right to change
specifications and design without notice.
3

Model
Heater Specifications
Fuel Type 1-K, Kerosene
Max Input (BTUH) 400,000 650,000
Ventilation Air Required
to Support Combustion 1400 CFM 3600 CFM
Pump Pressure (psig) 125 110
Fuel Consumption per Hour (gal) 3.0 4.9
Ball Bearing
1/2 HP, 1710 RPM 3/4 HP, 1680 RPM
Electrical Supply (Voltz/Hz/Phase) 120/60/1
4.4 7.1
Dimensions (Inches) Length x width x height 52.5” x 32” x 34” 69.2” x 30.7” x 48.7”
TOP 4 ft.
SIDES 4 ft.
BACK 4 ft.
BLOWER OUTLET 8 ft.
BULK FUEL STORAGE CONTAINER 25 ft.
Net Weight (Lbs.) 141 276
Shipping Weight (Lbs.) 155 298
Minimum Ambient Temperature
in Which Heater May Be Used
SPECIFICATIONS CP400AK CP650AK
Motor Characteristics
Minumum Safe
Distances From
Nearest
Combustible
Materials
Amp Draw
-20oF
4
CONTINUOUS
OPERATION

Safety Information
HAZARD DEFINITIONS
DANGER
Indicates an imminently hazardous situation which, if not
avoided WILL result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, COULD result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, MAY result in minor or moderate injury.
WARNING
Before using this heater, please read this USER’S
MANUAL very carefully. This USER’S MANUAL has been
designed to instruct you as to the proper manner in which
to assemble, maintain, store, and most importantly, how
to operate the heater in a safe and efficient manner.
WARNING
Never leave the heater unattended while burning!
DANGER
Improper use of this heater can result in serious injury or
death from burns, fire, explosion, electrical shock, and/or
carbon monoxide poisoning.
5
GENERAL SAFETY INFORMATION

6
■Use this heater only in well ventilation areas. Provide proper
ventilation. See heater specifications (page 4).
■Never use this heater in living or sleeping areas.
■Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble flu-like symptoms such as
headaches, dizziness, and/or nausea. If you have these
symptoms, your heater may not be working properly.
■Get fresh air at once! Have the heater serviced.
■People with breathing problems should consult a physician
before using the heater.
■Some people are more affected by carbon monoxide than
others. These include pregnant women, those with heart or
lung problems, anemia, or those under the influence of
alcohol, or at high altitudes.
■Keep all combustible materials away from this heater.
Minimum Clearances
Outlet 8 feet (250 cm)
Sides, Top and Rear 4 feet (125 cm)
■NEVER use fuels such as gasoline, benzene, paint thinners,
or other oil compounds in this heater
(RISK OF FIRE OR EXPLOSION).
■NEVER use this heater where flammable vapors may be
present.
■NEVER refill the heater’s fuel tank while heater is operating
or still hot. This heater is EXTREMELY HOT while in
operation.
■NEVER block air inlet (rear) or air outlet (front) of heater.
■NEVER use duct work in front or at rear of heater.
■NEVER move or handle heater while still hot.
■NEVER transport heater with fuel in
its tank.
■The heater is equipped with a thermostat, the heater may
start at any time.
■ALWAYS locate heater on a stable and level surface.
■Use 1-K kerosene in this heater. #1 fuel oil is a suitable
substitute.
■Bulk fuel storage should be a minimum of 25 ft. from
heaters, torches, portable generators, or other sources of
ignition. All fuel storage should be in accordance with federal,
state, or local authorities having jurisdiction.
WARNING
Risk of Electric Shock!
WARNING
Risk of CO Poisoning!
WARNING
Risk of Burns/Fire/Explosion!
GENERAL SAFETY INFORMATION (cont.)
■Use only the electrical power (voltage and frequency)
specified on the model plate of the heater. Use only a
threeprong, grounded outlet and extension cord.
■ALWAYS install the heater so that it is not directly
exposed to water spray, rain, dripping water, or wind.
■ALWAYS unplug the heater when not in use.
CALIFORNIA RESIDENTS: This heater produces carbon
monoxide, which is listed by the State of California as a
reproductive toxin under Proposition 65.
MASSACHUSETTS RESIDENTS:Massachusetts state law
prohibits the use of this heater in any building which is used
in whole or in part for human habitation. Use of this heating
device in Massachusetts requires local fire dept. permit
(M.E.L.C. 148, Section 10A).
CANADIAN RESIDENTS: Use of this heater shall be in
accordance with authorities having jurisdiction and CSA
Standard B139.
For CP400AK only.
NEW YORK CITY RESIDENTS: For use only at construction
sites in accordance with applicable NYC codes under NYCFD
certificate of approval #5037

Installation and Assembly Instructions
HEATER SPECIFICATIONS
47
Introduction
Please read this USER’S MANUAL carefully. It will show you how to
assemble, maintain and operate this heater safely and efficiently to
obtain the full benefits of its many features.
Consumer: Retain these instructions for future reference.
Unpacking
1. Remove all packing items applied to heater for
shipment.
2. Remove all items from carton.
3. Check all items for shipping damage.
If heater is damaged, promptly inform dealer where you
purchased heater.
DIMENSIONS & ASSEMBLY INSTRUCTIONS -CP400AK
PRODUCT FEATURES
Figure 1 – Heater Dimensions
Figure 2 – Model CP400AK Features
Front Handle
Hot Air Outlet
Lower Shell
Fuel Gauge
Fuel Cap
Lamp
Thermostat Knob
Power / Reset Switch Power Cord
Extra Electric Outlet
Fuel Tank
Fan Guard
Upper Shell
Rear Handle
Room Temp. Display
Cord Wrap
Drain Plug
34”
52.5” 32”

Front Handle
Rear Handle
Wheel Bar
Wheel Support Frame
Wheels (Semi-Pneumatic) Wheel Caps Cord Wraps Screw (L) Screw (S)
Bushings Cotter Pins
Washers
Nut
Figure 3 – Components
DIMENSIONS & ASSEMBLY (cont.)
ASSEMBLY FOR CP400AK
TOOLS REQUIRED
• Medium Phillips screwdriver
• 3/8” open or adjustable wrench,
use US (Inch) screws nuts
• Long nose pliers
ASSEMBLING WHEEL & HANDLE
1. Slide axle through wheel support frame. Install
wheel bushings and wheel on axle.
NOTE: When installing wheels, tube valve should
face out from support frame (Figure 4).
2. Place flat washers and cotter pins on axle ends
and bend cotter pins with long nose pliers to
secure.
3. Place wheel cap on flat washers and put wheel
cap in flat washers end.
4. Place heater on wheel support frame. Make
sure air inlet end (rear) of heater is over wheels.
Align the holes on fuel tank flange. Insert screws
through handles (front and rear), fuel tank
flange, and wheel support frame as shown in
Figure 4 and attach nut finger tight after each
screw is inserted.
5. After all screws are inserted, tighten nuts firmly.
6. Align the hole on the rear handle with the
mounting hole on the cord wrap.
7. Insert screws through cord wrap, rear handle as
shown in Figure 4 and attach nut finger tight
after each screw is inserted.
8. After all screws are inserted, tighten nuts firmly.
CAUTION
Risk of fire or explosion
■Do not operate heater without support frame fully
assembled to tank.
Figure 4 – Wheel and Handle Assembly
Screw (L)
Fuel Tank Flange
Wheel Support Frame
Wheel
(Semi-Pneumatic)
Nut
Flat Washer
Wheel Cap
Axle
Wheel Tube Valve
Cotter Pin
Bushing
Air Inlet
Screw (S)
Screw (S)
Cord Wrap
Nut
48

DIMENSIONS ASSEMBLY INSTRUCTIONS -
CP650AK
PRODUCT FEATURES
DIMENSIONS & ASSEMBLY (cont.)
Figure 5 – Heater Dimensions
48.7”
69.2” 30.7”
Figure 6 – Model CP650AK Features
Handle Supporter
Hot Air Outlet
Lower Shell
Fuel Gauge
Fuel Cap Lamp
Thermostat Knob
Power / Reset Switch
Power Cord Drain Plug
Fan Guard
Upper Shell
Handle Support
Front Handle
Fuel Tank
Wheel (Solid Type)
49

Figure 7 – Component Identification
Flat Washer
Cotter Pin Bushing
Wheels
(Solid Type) Wheel Caps
Hardware Kit
Front Handle
Handle
Frame
Wheel Axle
Wheel Support Frame
Handle Supporter
ASSEMBLY FOR CP650AK
TOOLS REQUIRED
Long nose pliers
ASSEMBLING WHEEL & HANDLE
1. Slide axle through wheel support frame. Install wheel bushings
and wheel on axle.
NOTE: When installing wheels, tube valve should face out from
support frame (Figure 8).
2. Place flat washers and cotter pins on axle ends and bend cotter
pins with long nose pliers to secure.
3. Place wheel cap on flat washers and put wheel cap
in flat washers end.
4. Loosen 4 screws on the front handle in order to
remove handle front.
5. Move the removed handle front to the handle on
the front side as Figure 8, and then tighten 4
screws after matching handle and handle front.
DIMENSIONS & ASSEMBLY (cont.)
CAUTION
Risk of fire or explosion
■Do not operate heater without support frame fully
assembled to tank.
Figure 8– Wheel and Handle Assembly
410
Wheel
Flat Washer
Wheel Cap
Wheel Axle
Bushing
Nut
User Assembly
Screw MOVE
Wheel Tube Valve

FUEL SPECIFICATIONS
KEROSENE (1-K)
For optimal performance of this heater, it is strongly suggested
that 1-K kerosene be used. 1-K kerosene has been refined to
virtually eliminate contaminants, such as sulfur, which can
cause a rotten egg odor during the operation of the heater.
However, #1 or #2 fuel oil (diesel fuel) may also be used if 1-K
kerosene is not available. Be advised that these fuels do not
burn as clean as 1-K kerosene, and care should be taken to
provide more fresh air ventilation to accommodate any added
contaminants that may be added to the heated space.
OPERATION
OVERVIEW OF HEATER DESIGN
Fuel System: This heater is equipped with a fuel pump (Gear) that
pulls fuel through the fuel line connected to the fuel tank and then
pushes fuel through a filter and a solenoid valve and out the burner
head nozzle.
This fuel is sprayed into the combustion chamber in a fine mist.
SureFire Ignition: The electronic ignitor sends voltage to a
specially designed spark plug. The spark plug ignites the fuel
and air mixture.
The Air System: The heavy duty motor turns a fan that forces
air into and around the combustion chamber. Here, the air is
heated and then forced out the front of the heater.
THE SAFETY SYSTEM
Temperature Limit Control: This heater is equipped with a
Temperature Limit Control designed to turn the heater off
should the internal temperature rise to an unsafe level. If this
device activates and turns your heater off, it may require
service.
Electrical System Protection: This heater’s electrical system is
protected by a circuit breaker mounted to the power switch that
protects PCB assembly and other electrical components from damage.
Flame-Out Sensor: Utilizes a photocell to monitor the flame in
burn chamber during normal operation. It will cause the heater
to shut off should the burner flame extinguish.
Model Internal Shut-off Temp.
+/-10 Degrees
Reset Temp.
+/-10 Degrees
CP400AK
CP650AK
176OF/80OC
160OF/71OC
122OF/50OC
120OF/49OC
Figure 9 – Overview of Heater Design
411
WARNING!
Fire and explosion hazard!
■ Kerosene should only be stored in a blue container that is
clearly marked “kerosene”. Never store kerosene in a red
container. Red is associated with gasoline.
■ NEVER store kerosene in the living space. Kerosene should
be stored in a well ventilated area outside the living area.
■ NEVER use fuel such as gasoline, benzene, alcohol, white
gas, camp stove fuel, paint thinners, or other oil
compounds in this heater (THESE ARE VOLATILE FUELS
THAT CAN CAUSE A FIRE OR EXPLOSION).
■ NEVER store kerosene in direct sunlight or near a source of
heat.
■ NEVER use kerosene that has been stored from one
season to the next. Kerosene deteriorates over time. OLD
KEROSENE WILL NOT BURN PROPERLY IN THIS HEATER.
■ Use 1-K kerosene in this heater. #1 fuel is a suitable
substitute.

FUELING YOUR HEATER
Never fill the heater fuel tank in the living space: fill the
tank outdoors.
Do not overfill your heater and be sure heater is level.
IMPORTANT: REGARDING FIRST IGNITION OF HEATER. The
first time you light the heater, it should be done
OUTDOORS. This allows the oils, etc., used in
manufacturing heater to be burned off outside.
TO START HEATER
1. Fill fuel tank with kerosene or No. 1 fuel oil.
2. Attach fuel cap.
3. Plug power cord into three prong, grounded extension
cord. Extension cord must be at least six feet long.
- Extension Cord Wire Size Requirements:
- 6 to 100 feet long, use 14 AWG conductor.
- 101 to 200 feet long, use 12 AWG conductor.
- 201 to 300 feet long, use 10 AWG conductor.
- 301 to 400 feet long, use 8 AWG conductor.
- 401 to 500 feet long, use 6 AWG conductor.
4. Turn “THERMOSTAT CONTROL KNOB” to desired setting (setting
range: 40°-110°F, 9 steps) and push power switch to “ON”
position. Power indicator lamp and room temperature display
will light and heater will start.
If heater does not start, the thermo-stat setting may be too low,
turn “THERMOSTAT CONTROL KNOB” to higher position to start
heater. If heater still does not start, turn power switch to “OFF”
and then to “ON” position (See Figure 10). If heater still does not
start, see Troubleshooting Chart on page 19.
NOTE: Room Temp. display indicates as following:
- When room temp. is less than 0°F: “Lo”.
- When room temp. is between 0°F and
99°F: Indicates room temperatures.
- When room temp. is more than 99°F: “HI”.
NOTE: The major electrical components of this heater are protected
by a circuit breaker mounted to the power switch. If your heater fails
to start, check this first and replace as necessary. You should also
check your power source to insure that proper voltage and
frequency are being supplied to the heater.
TO STOP HEATER
Heater must go through cooling cycle. The cooling cycle cools the
combustion chamber. Damage to heater can occur if combustion
chamber is not cooled. Do not restart heater until cooling cycle is
complete.
1. Turn “THERMOSTAT CONTROL KNOB” to lowest temperature
setting. This will cause heater flame to go out. The motor will
continue to run during the cooling cycle. This allows the fan to
cool the combustion chamber. When the cooling cycle (approx.
1 min.) is finished, the motor will stop. Do not turn switch to
“OFF” or unplug heater until cooling cycle is finished.
2. Turn switch to “OFF” and unplug power cord.
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 HEATER
The cooling cycle cools the combustion chamber.
1. Wait until cooling cycle is finished after stopping heater.
2. Repeat steps under TO START HEATER.
WARNING!
Fire and explosion hazard.
■ Never refill fuel tank when heater is operating or
still hot.
OPERATION (cont.)
412
Figure 10 – Control Parts
Lamp
Thermostat
Control Knob Power / Reset
Switch
Room Temp.
Display
CAUTION!
■ Never unplug heater while running.
CAUTION!
■ DO NOT restart heater until cooling cycle is finished?

EXTRA ELECTRIC OUTLET
(For CP400AK only)
• Always cover electrical outlet when not in use. See Figure 12.
• Don't plug and use an appliance with more than 5A current in this
outlet.
WARNING!
Shock hazard
■ Always cover outlet when not in use.
Figure 11 – Extra Electric Outlet
Cover
Electric Outlet
LONG-TERM STORAGE OF YOUR HEATER
FUEL TANK DRAIN
1. Remove drain plug from rear bottom side of fuel tank by
pulling plug grip downward and drain. See Figure 12.
2. Using a small amount of kerosene, swirl and rinse the
inside of the tank.
NEVER MIX WATER WITH KEROSENE, as it will cause rust inside
the tank. Pour the kerosene out, making sure that you remove it
all.
IMPORTANT: Do not store kerosene over summer for use during
next heating season. Using old fuel may damage heater.
3. Reinstall drain plug as follows:
- Insert plug’s seal head fully into drain hole so that flange is
flush
to tank’s bottom. See Figure 13.
- Insert seal cap fully into head hole so that cap flange is
flush to head flange. See Figure 13.
IMPORTANT: Reinstall plug fully into hole in tank; otherwise it
will not seal completely.
- Make sure storage place is free of dust and corrosive fumes.
- Store the heater in the original box with the original packing
material and keep USER’S MANUAL with heater.
OPERATION (cont.)
Figure 12 – Drain Plug Removal
Drain Plug
Plug Grip
Rear Bottom
Side Fuel Tank
Figure 13 – Drain Plug Reinstall
Drain Hole
Fuel Tank
Seal Head
Head Flange
Head Flange
Head Hole
Seal Cap
Cap Flange
413

UPPER SHELL REMOVAL
(For CP400AK only)
- Remove screws along each side and top of heater using medium
Phillips screwdriver.
(For CP650AK only)
- Remove screws of cone-outside and move up cone-outside after
that remove screws along each side and top of heater using
medium Phillips screwdriver.
FAN BLADES AND AIR DEFLECTOR
CLEAN EVERY SEASON OR AS NEEDED.
- Remove upper shell.
- Clean fan blades and air deflectors using soft cloth moistened with
kerosene or solvent.
- Dry fan blades and air deflectors thoroughly.
- Reinstall upper shell.
414
MAINTENANCE
USE ORIGINAL EQUIPMENT REPLACEMENT PARTS. Use of third-party or other alternate components will void warranty and
may cause unsafe operating conditions.
WARNING
Fire or explosion hazard.
■ Never service heater while it is plugged in or while hot!
Figure 14 – Upper Shell Removal
Upper Shell
Figure 15 – Upper Shell Removal
Upper Shell
Cone-Outside
Figure 16 – Fan Blades and Air Deflectors
Air Deflector Fan Blade

NOZZLE
REMOVE DIRT IN NOZZLE AS NEEDED.
- Remove upper shell.
- Remove fuel line from solenoid valve using 1/4” wrench.
- Remove spark plug wire from spark plug.
- Remove spark plug from burner head using medium Phillips
screwdriver.
- Remove five screws using medium Phillips screwdriver and
remove burner head from combustion chamber.
- Carefully remove nozzle from burner head using 5/8” socket
wrench.
- Blow compressed air through face of nozzle (this will remove any
dirt).
- Inspect nozzle for damage. If damaged or clogged, replace
nozzle.
- Make sure plug is in place on burner head.
- Reinstall nozzle into burner head and tighten firmly (175-200
inch-pounds).
- Reinstall spark plug into burner head.
- Attach burner head to combustion chamber.
- Attach spark plug wire to spark plug.
- Attach fuel line to solenoid valve. Tighten firmly.
- Replace upper shell.
SPARK PLUG
CLEAN AND REGAP EVERY 600 HOURS OF OPERATION OR
REPLACE AS NEEDED.
- Remove upper shell.
- Remove spark plug wire from spark plug (See Figure 18).
- Remove spark plug from burner head using medium Phillips
screwdriver.
- Clean and regap spark plug electrodes to .140” (3.5 mm) gap.
- Reinstall spark plug into burner head.
- Attach spark plug wire to spark plug.
- Reinstall upper shell.
415
MAINTENANCE (cont.)
Figure 18 – Spark Plug
Burner Head Spark Plug
Spark Plug
Wire
Gap
Figure 17 – Nozzle
Burner Head
Fuel Line
Plug
Nozzle
Spark Plug Spark Plug
Wire

PHOTOCELL
CLEAN PHOTOCELL ANNUALLY OR AS NEEDED.
- Remove upper shell (See page 14).
- Remove photocell from photocell bracket and disconnect
photocell from connector.
- Clean photocell lens with cotton swab.
- Inspect photocell for damage. If damaged, replace photocell.
FUEL LINES
TIGHTEN FUEL LINES ANNUALLY OR
AS NEEDED.
- Remove upper shell (See page 14).
- Use 1/4” wrench and tighten fuel line (A) at solenoid valve and at
pump (See Figure 20).
- Remove fan guard (See Figure 21,22).
- Use 3/8” wrench and tighten fuel line (B) at pump and pump fuel
filter assembly.
- Reinstall fan guard.
FUEL FILTER
CLEAN TWICE PER HEATING SEASON OR AS NEEDED.
Tank Fuel Filter
- Remove fan guard (See Figure 21,22).
- Disconnect fuel line (B) from pump and pump fuel filter assembly
with 3/8” wrench (See Figure 23).
- Carefully pry fuel filter loose from fuel tank with flat end of
screwdriver.
- Wash fuel lines and fuel filter with clean kerosene.
- Replace fuel filter into fuel tank.
- Connect fuel lines (B) to pump and pump fuel filter assembly.
- Reinstall fan guard.
416
MAINTENANCE (cont.)
Figure 19 – Clean Photocell Lens
Photocell Bracket
Photocell
Connector
Photocell Lens Install Photocell
1) Incorrect
2) Correct
Figure 20 – Tighten Fuel Line
Burner Head
Solenoid
Valve
Fuel Line (A) Fuel Line (B)
Figure 21 – Remove Fan Guard (CP450AK)
Fan Guard
Flat Washer
Screw
Figure 22 – Remove Fan Guard (CP650AK)
Fan Guard

417
MAINTENANCE (cont.)
Pump Fuel Filter
- Remove fan guard (See Figure 21,22).
- Unscrew filter bottom clockwise from filter top with adjustable
pliers.
- Remove fuel filter, gasket, magnet from filter bottom (See Figure
24).
- Wash filter bottom with clean kerosene.
- Wipe inside of filter bottom dry with clean cloth.
- Wash Fuel filter in clean kerosene.
- Remove dirt attached to magnet.
- Put clean magnet, fuel filter and gasket back in filter bottom.
- Tighten firmly.
PUMP PRESSURE ADJUSTMENT
- Remove pressure gauge plug from pump with 1/8” Allen wrench.
- Install accessory pressure gauge to pressure gauge port (See
Figure 25).
- Start heater (See Operation, Page 12). Allow motor to reach full
speed.
- Adjust pressure (Using small flat blade screwdriver). Turn pressure
adjustment screw clockwise to increase pressure. Turn screw
counterclockwise to decrease pressure.
- Set pump pressure at 110 PSI (for CP650AK).
- Set pump pressure at 125 PSI (for CP400AK).
- Stop heater (See Operation, Page 12).
- Remove pressure guage. Replace pressure gauge plug in pressure
gauge port.
NOTE: Use only original equipment replacement parts. Use of
alternate or third party components will void warranty and may cause
an unsafe operating condition.
Figure 23 – Remove Tank Fuel Filter
Pump Fuel Line (B)
Pump Fuel Filter Assembly
Fuel Filter
Figure 24 – Fuel Pump Filter
Filter Top
Fuel Filter
Gasket
Filter
Bottom
Magnet
Figure 25 – Adjusting Pump Pressure
Pressure Gauge Plug
Pressure Adjustment Screw
Pressure Gauge Port
Pressure Gauge
Pump

418
WIRING DIAGRAM
ORANGE
BLACK
Figure 27 – Wiring Diagram Model CP650AK
Figure 26 – Wiring Diagram Model CP400AK

Troubleshooting
419
Symptom Possible Cause(s) Corrective Action
Heater ignites but MAIN PCB
assembly shuts heater off after
a short period of time.
(Indicator lamp is flickering
and room temp. display
indicates “E1”)
Heater will not ignite but motor
runs for a short period of time.
(Indicator lamp is flickering
and room temp. display
indicates “E1”)
Fan does not turn when heater
is plugged in and power switch
is in the “ON” position.
(Indicator lamp is on or
flickering)
(Indicator lamp is flickering
and room temp. display
indicates “E2”)
(Indicator lamp is flickering
and room temp. display
indicates “E3”)
Heater will not turn-on
(Indicator lamp is off)
1. Wrong pump pressure
2. Dirty fuel filter
3. Dirt in nozzle
4. Dirty photocell lens
5. Photocell assembly not properly
installed. (Not seeing the flame)
6. Bad electrical connection between
photocell and MAIN PCB assembly
7. Defective photocell
1. No fuel in tank
2. Wrong pump pressure
3. Carbon deposits on spark plug and/or
improper gap
4. Dirty fuel filter
5. Dirt in nozzle
6. Water in fuel tank
7. Bad electrical connection between
ignitor and MAIN PCB assembly
8. Ignitor wire is not attached to spark
plug
9. Defective ignitor
10. Defective solenoid valve (not opening)
1. Thermostat setting is too low
2. Bad electrical connection between
motor and MAIN PCB assembly
1. Room Temp. sensor disconnected
2. Sensor failure
Thermostat switch failure
1. Temperature limit safety device is
overheated
2. No electrical power
3. Bad electrical connection between
temperature limit safety device and
PCB board
1. See Pump Pressure Adjustment, page 17
2. Clean Fuel Filter, see page 16
3. Clean Nozzle, see page 15
4. Clean photocell lens, page 16
5. Make sure photocell boot is properly seated in bracket,
see page 16
6. Check electrical connections. See Wiring Diagram, page
18
7. Replace photocell, page 16
1. Fill tank with kerosene
2. See Pump Pressure Adjustment, page 17
3. See Spark Plug, page 15
4. See Fuel Filter, page 16
5. See Nozzle, page 15
6. Flush fuel tank with clean kerosene, page 13
7. Check electrical connections. See Wiring Diagram, page
18
8. Attach ignitor wire to spark plug
9. Replace ignitor
10. Check electrical connections and voltage to solenoid
valve. If defective, replace solenoid valve
1. Turn thermostat control knob to a higher setting
2. Check electrical connections. See Wiring Diagram, page
18
1. Reconnect sensor. See Wiring Diagram, page 18
2. Replace sensor. See Wiring Diagram, page 18
Replace Main P.C.B.
1. Turn power switch to “OFF” and allow to cool (about 10
min). Then turn power switch to “ON” position
2. Check to insure heater cord and extension cord are
plugged in. Check power supply
3. Check electrical connections. See Wiring Diagram, page
18
Troubleshooting Chart

For Repair Parts,
call 1-800-345-7200
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Figure 28– Repair Parts Illustration for Portable Oil-Fired Heaters Models CP400AK
PARTS SCHEMATIC CP400AK
Parts Identification
420
14
27
25
18
19
16
20
21
22 23
11
9
6
8
7
5
4
3
2
1
13
12
24
26
15
17
28
10
29