L.B. White Tradesman K70 User manual

TRADESMAN K70 & KI50
KEROSENE
PORTABLE FORCED
AIR HEATERS
(WITH BUILT-IN THERMOSTAT)
OWNER’S MANUAL
Model Numbers: CP070AK and CP150AK
Heater Sizes: 70,000 and 150,000 Btu/Hr
IMPORTANT: Read and understand this manual before assembling, starting,
orservicingheater.Improperuseofheatercancauseseriousinjury.Keepthis
manual for future reference.
ARL LOGO G 004
®

2
104041
KEROSENE PORTABLE FORCED AIR HEATER
L.B.WHITE
SAFETY
INFORMATION
Carbon Monoxide Poisoning: Early
signs of carbon monoxide poisoning re-
semble 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 preg-
nant women, persons with heart or lung
diseaseoranemia,thoseundertheinfluence
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.
DANGER: Carbon monoxide
poisoning may lead to death!
• Use only kerosene or No. 1 fuel oil to
avoidrisk offireor explosion.Neveruse
gasoline, naphtha, paint thinners, alco-
hol, or other highly flammable fuels.
• Fueling
a)Personnelinvolved with fueling shall
be qualified and thoroughly familiar
with the manufacturer's instructions
and applicable federal, state, and lo-
cal regulations regarding the safe
fueling of heating units.
WARNINGS
IMPORTANT: Read this Owner’s
Manual carefully and completely
before trying to assemble, oper-
ate, or service this heater. Im-
proper use of this heater can
causeseriousinjuryordeathfrom
burns, fire, explosion, electrical
shock, and carbon monoxide
poisoning.
b)Only the type of fuel specified on the
heater's data plate shall be used.
c) All flame, including the pilot light, if
any,shallbeextinguishedandtheheater
allowed to cool, prior to fueling.
d)During fueling, all fuellinesand fuel-
lineconnections shallbeinspected for
leaks.Anyleaks shallbe repairedprior
to returning the heater to service.
e)At no time shall more than one day's
supply of heater fuel be stored inside
abuilding in the vicinity of theheater.
Bulk fuel storage shall be outside the
structure.
f) All fuel storage shall be located a
minimum of 25 feet from heaters,
torches, welding equipment, and
similar sources of ignition (excep-
tion: the fuel reservoir integral with
the heater unit).
g)Whenever possible, fuel storage shall
beconfinedtoareas where floor pen-
etrations do not permit fuel to drip
onto or be ignited by a fire at lower
elevation.
h)Fuel storage shall be in accordance
with the federal, state, or local au-
thority having jurisdiction.
• Never use heater where gasoline, paint
thinner, or other highly flammable va-
pors are present.
• Follow all local ordinances and codes
when using heater.
• Heaters used in the vicinity of tarpau-
lins, canvas, or similar enclosure ma-
terials shall be located a safe distance
fromsuch materials.Therecommended
minimum safe distance is 10 feet. It is
further recommended that these enclo-
sure materials be of a fire retardant na-
ture.These enclosure materials shall be
securely fastened to prevent them from
igniting or from upsetting the heater
due to wind action.
• Use only in well vented areas. Before
using heater, provide at least a three-
square-foot opening of fresh, outside
air for each 100,000 Btu/Hr of rating.
Thisheaterproducescarbonmonoxide,
which is listed by the State of Califor-
niaas a reproductive toxin under Propo-
sition 65.
• Use only in places free of flammable
vapors or high dust content.
• Useonly with the electrical voltage and
frequency specified on model plate.
• Use only a three-prong, grounded ex-
tension cord.
• Minimum heater clearances from com-
bustibles:
Outlet: 8 Ft. Sides: 4 Ft.
Top: 4 Ft. Rear: 4 Ft.
• Locate heater on a stable and level sur-
face while hot or running or a fire may
occur.
• When moving or storing heater, keep
heater in a level position or fuel spill-
age may occur.
• Keep children and animals away from
heater.
• Unplug heater when not in use.
• This heater is equipped with a thermo-
stat. Heater may start at anytime.
• Never use heater in living or sleeping
areas.
• Never block air inlet (rear) or air outlet
(front) of heater.
• Never move, handle, refuel, or service
a hot, operating, or plugged-in heater.
• Never attach duct work to front or rear
of heater.

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104041
OWNER’S MANUAL
PRODUCT IDENTIFICATION
Thermostat
Knob
Side Cover
Lower
Shell
Fuel Cap
Fan Guard
Power Cord
Hot Air
Outlet Upper Shell
Fuel Tank
Flame-Out
Control Reset
Button
70,000 BTU UNIT
Upper Shell
Hot Air
Outlet
Lower
Shell
Fuel Tank
Side Cover
Flame-Out Control
Reset Button
Power Cord
Fuel Cap
Fan Guard
Air Filter
End Cover
150,000 BTU UNIT
1. Remove all packing items applied to
heater for shipment.
2. Remove all items from carton.
3. Check items for shipping damage. If
heater is damaged, promptly inform
dealer where you bought heater.
UNPACKING

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104041
KEROSENE PORTABLE FORCED AIR HEATER
L.B.WHITE
WARNING:Useonlykerosene
orNo.1fueloiltoavoidriskoffire
or explosion. Never use gaso-
line, naphtha, paint thinners, al-
cohol, or other highly flammable
fuels.
Donotuse heavyfuels suchasNo.2fuel 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
storagecontainer.Besure storagecontainer
is clean. Foreign matter such as rust, dirt, or
water will cause the flame-out control to
shut down heater. Foreign matter may also
require you to clean fuel system often.
FUELS
The 150,000 BTU unit is furnished with
wheels and handles. Wheels, handles, and
the mounting hardware are found in the
shipping carton.
Tools Needed
• Medium Phillips Screwdriver
• 3/8" Open or Adjustable Wrench
• Hammer
1. Slide axle through wheel support
frame. Install wheels on axle.
IMPORTANT: When installing wheels,
point extended hub of wheels toward
wheel support frame (see Figure 1).
ASSEMBLY
Front
Handle
Extended
Hub
Axle
Cap Nut
Wheel Nut
Wheel
Support
Frame
Fuel
Tank
Flange
Air
Inlet
Hot Air
Outlet
Screw
Rear
Handle
Figure 1 - Wheel and Handle Assembly
2. Place cap nuts on axle ends. Gently tap
with hammer to secure.
3. Place heater on wheel support frame.
Make sure air inlet end (rear) of heater
is over wheels. Line up holes on fuel
tank flange with holes on wheel sup-
port frame.
4. Place handles on top of fuel tank
flange. Insert screws through handles,
fuel tank flange, and wheel support
frame.Attach nut finger tight after each
screw is inserted.
5. After all screws are inserted, tighten
nuts firmly.
VENTILATION
WARNING: Follow the mini-
mum fresh, outside air ventila-
tionrequirements.Ifproperfresh,
outside air ventilation is not pro-
vided, carbon monoxide poison-
ing can occur. Provide proper
fresh, outside air ventilation be-
fore running heater.
Provideatleastathree-square-footopening
offresh,outsideairforeach100,000Btu/Hr
rating. Provide extra fresh air if more heat-
ers are being used. Example: A 150,000
Btu/Hrheaterrequiresoneofthefollowing:
• a two-car garage door (16 foot wide
opening) raised 3 1/2 inches
• a single-car garage door (9 foot wide
opening) raised 6 inches
• two windows (30 inch wide opening,
each) raised 11 inches

5
104041
OWNER’S MANUAL
THEORY OF
OPERATION
The Fuel System: The air pump forces
air through the air line. The air is then
pushedthroughtheburnerheadnozzle.This
air causes fuel to lift from the tank. A fine
mist of fuel is sprayed into the combustion
chamber.
TheAir System: Themotorturnsthefan.
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.
THEORY CUTAWAY PFA/OV 003
Fuel Filter
Air For Fuel
System Air For Combustion And Heating Fuel
Combustion
Chamber Air
Intake
Filter
Clean
Heated
Air Out
Cool
Air
In
Air
Output
Filter
Fuel
Tank
Figure 2 - Cross Section Operational View
Burner
Head
Spark
Plug
Motor
Fan
Electronic
Ignitor
Air Line
To Burner
Nozzle
Air Pump
OPERATION
WARNING: Review and un-
derstand the warnings in the
SafetyInformation section,page
2. They are needed to safely op-
eratethis heater.Follow alllocal
codes when using this heater.
To Stop Heater
1. Unplug extension cord from outlet.
To Restart Heater
1. Wait 2 minutes after stopping heater.
2. Repeat steps under To Start Heater,.
TO START HEATER
1. Follow all ventilation and safety infor-
mation.
2. Fill fuel tank with kerosene or No. 1
fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into three-
prong,groundedextension cord. Exten-
sion cord must be at least six feet long.
Flame-Out Control
Reset Button
70,000 BTU Unit
Flame-Out Control
Reset Button
Figure3-Flame-OutControlResetButton
150,000 BTU Unit
Extension Cord Wire Size Re-
quirements
6to 10 feetlong,use 18AWG rated cord
11 to 100 feet long, use 16 AWG
rated cord
101 to 200 feet long, use 14 AWG
rated cord
5. Plug extension cord into standard 120
volt/60hertz,three-hole, grounded out-
let.Adjust thermostat to desired setting.
If heater does not start, thermostat set-
ting may be too low. Turn thermostat
knob to higher position to start heater.
If thermostat is in HIGH position and
heater still will not start, push in flame-
out control reset button (see Figure 3).

6
104041
KEROSENE PORTABLE FORCED AIR HEATER
L.B.WHITE
STORING,
TRANSPORTING,
OR SHIPPING
Note: If shipping, transport companies re-
quire fuel tanks to be empty.
1. Drain fuel tank.
Note: Some models have drain plug on
underside of fuel tank. If so, remove
drain plug to drain all fuel. If heater
does not have drain plug, drain fuel
through fuel cap opening. Be sure all
fuel is removed.
2. Replace drain plug if provided.
3. 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 dur-
ing future use.
4. Replace fuel cap or drain plug. Prop-
erlydisposeof old and dirty fuel. Check
with local automotive service stations
that recycle oil.
5. If storing, store heater in dry place.
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.Usingoldfuelcoulddamageheater.
Item How Often How To
Fuel tank Flush every 150-200 hours See Storing, Transporting, or
of operation or as needed Shipping, column 1
Air output and Replace every 500 hours of See Air Output, Air Intake,
lint filters operation or once a year and Lint Filters, page 8
Air intake Wash and dry with soap and See Air Output, Air Intake,
filter water every 500 hours of op- and Lint Filters, page 8
eration or replace as needed
Fuel filter Clean twice a heating season See Fuel Filter, page 9
or replace as needed
Spark plug Clean and regap every 600 hours See Spark Plug, page 9
operation or replace as needed
Fan blades Clean each season or as needed See Fan, page 8
Motor Not required/permanently lubricated
WARNING: Neverserviceheater
while it is plugged in, operating, or
hot. Severe burns and electrical
shock can occur.
PREVENTATIVE
MAINTENANCE
SCHEDULE

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104041
OWNER’S MANUAL
POSSIBLE CAUSE
1. Wrong pump pressure
2. Dirty air output, air intake and lint filters
3. Dirty fuel filter
4. Dirt in nozzle
5. Dirty photocell lens
6. Bad flame-out control
1. Wrong pump pressure
2. Carbon deposits on spark plug and/or
improper gap
3. Dirty fuel filter
4. Dirt in nozzle
5. Water in fuel tank
6. Electronic ignitor not grounded
7. Bad electronic ignitor
1. Thermostat setting is too low
2. Flame-out control not reset
3. Solid state relay not allowed to reset
4. Binding pump rotor
OBSERVED FAULT
Heater ignites, but flame-out control shuts
off heater after a short period of time
Heater will not ignite, but motor runs for a
short period of time
Motordoes not start whenheateris plugged
in, fan rotates slowly or does not turn
REMEDY
1. See Pump Pressure Adjustment, page 9
2. See Air Output, Air Intake and Lint Fil-
ters, page 8
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Clean photocell lens
6. Replace flame-out control
1. See Pump Pressure Adjustment, page 9
2. See Spark Plug, page 9
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Drain and flush fuel tank with clean
kerosene. See Storing, Transporting, or
Shipping, page 6
6. Make sure electronic ignitor mounting
is tight
7. Replace electronic ignitor
1. Turn thermostat knob to a higher setting
2. Press flame-out control reset button
3. Wait two minutes before trying to restart
heater
4. If fan is hard to turn, see Pump Rotor,
page 10
TROUBLESHOOTING
WARNING:Highvoltage!
WARNING: Never service heater while it is plugged in,
operating,orhot.Severeburnsandelectricalshockcanoccur.

8
104041
KEROSENE PORTABLE FORCED AIR HEATER
L.B.WHITE
50 AIR FILTER REMOVAL PFA/P 044
R
REMOVAL PFA/P 047
SERVICE
PROCEDURES
UPPER SHELL REMOVAL
1. Remove screws along each side of
heater using 5/16" nut-driver. These
screws attach upper and lower shells
together.
2. Lift upper shell off.
3. Remove fan guard.
WARNING: Never service
heater while it is plugged in, op-
erating,or hot.Severeburns and
electrical shock can occur.
Figure 5 - Fan Cross Section
Figure 6 - Air Output, Air Intake, and Lint
Filters
Upper
Shell Fan
Guard
Fan
Guard
Upper
Shell
70,000 BTU Unit
150,000 BTU Unit
Fan
Setscrew
Motor
Motor
Shaft
Flush
Fan Guard
Filter End
Cover
Air Intake
Filter
Lint Filter
70,000 BTU Unit
150,000 BTU Unit
Air Output
Filter
Air Intake
Filter
Air Output
Filter
Fan Guard
Filter End
Cover
Lint Filter
AIR OUTPUT, AIR INTAKE,
AND LINT FILTERS
1. Remove upper shell (see column 1).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover.
4. Replace air output and lint filters.
5. Wash or replace air intake filter (see
Preventative Maintenance Schedule,
page 6).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
FAN
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 (see column 1).
2. Use 1/8" allen wrench to loosen set-
screw which holds fan to motor shaft.
3. Slip fan off motor shaft.
4. Clean fan using 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 (see
Figure 5).
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds).
8. Replace fan guard and upper shell.
Figure 4 - Upper Shell Removal

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104041
OWNER’S MANUAL
PUMP PRESSURE
ADJUSTMENT
1. Remove pressure gauge plugfromfilter
end cover.
2. Install accessory pressure gauge (part
number 500-20907).
3. Start heater (see Operation, page 5).
Allow motor to reach full speed.
4. Adjust pressure. Turn relief valve to
right to increase pressure. Turn relief
valve to left to decrease pressure.
Correct Pump Pressure
70,000 BTU Unit: 4.0 PSI
150,000 BTU Unit: 5.0 PSI
5. Remove pressure gauge. Replace pres-
sure gauge plug in filter end cover.
FUEL FILTER
1. Remove side cover screws using 5/16"
nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter neck.
4. Carefully pry bushing, fuel filter, and
lowerfuel line (150,000 BTU unit only)
out of fuel tank.
5. Wash fuel filter with clean fuel and re-
place in tank.
6. Attach upper fuel linetofuelfilterneck.
7. Replace side cover.
Figure 8 - Adjusting Pump Pressure
150,000 BTU Unit Shown
Figure 7 - Pressure Gauge Plug Removal
150,000 BTU Unit Shown
Pressure
Gauge
Pressure
Gauge Plug
Relief Valve
Location
Side Cover
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel Line
70,000 BTU Unit
Fuel Filter
Side Cover
Upper Fuel Line
Figure 9 - Fuel Filter Removal
SERVICE
PROCEDURES
Continued
SPARK PLUG
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
3. Removesparkplugwire fromsparkplug.
4. Remove spark plug from burner head
using 13/16" open-end wrench.
5. Clean and regap spark plug electrodes
as follows:
70,000 BTU unit – .055" gap
150,000 BTU unit – .075" gap
6. Install spark plug in burner head.
7. Attach spark plug wire to spark plug.
8. Replace fan (see page 8).
9. Replace fan guard and upper shell.
Spark Plug
Wire
Burner
Head
Figure 10 - Spark Plug Removal
Figure 11 - Spark Plug Gap
Gap
Spark
Plug
Bend Here to
Adjust Gap
150,000 BTU Unit
Continued

10
104041
KEROSENE PORTABLE FORCED AIR HEATER
L.B.WHITE
100 ROTOR-Domestic PFA/P 059A
PUMP ROTOR
(Procedure if rotor is binding)
1. Remove upper shell (see page 8).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover and air filters.
4. Remove pump plate screws using 5/16"
nut-driver.
5. Remove pump plate.
6. Remove rotor, insert, and blades.
7. Check for debris in pump. If debris is
found, blow out with compressed air.
8. Install insert and rotor.
9. Check gap on rotor. Adjust to .003"/
.004" if needed (see Figure 15).
Note: Rotate rotor one full turn to in-
sure the gap is .003"/.004" at tightest
position. Adjust if needed.
10. Install blades, pump plate, air filters,
and filter end cover.
11. Replace fan guard and upper shell.
12. Adjust pump pressure (see page 9).
Note: If rotor is still binding, proceed
as follows.
13. Perform steps 1 through 6 above.
14. Place fine grade sandpaper (600 grit)
on flat surface. Sand rotor lightly in
“figure 8” motion four times (see Fig-
ure 16).
15. Reinstall insert and rotor.
16. Perform steps 10 through 12 above.
5
0 ROTOR-Domestic PFA/P 056B
Blade Pump
Plate Air Intake
Filter
Filter End
Cover
Fan Guard
Air Output
Filter
Insert
70,000 BTU Unit
Blade
Air Output
Filter
Figure 14 - Rotor Location
Fan Guard
Filter End
Cover
Air Intake
Filter
Pump
Plate
150,000 BTU Unit
Rotor
InsertRotor
ROTOR GAP ADJUST PFA/OV 007
ROTOR ON SANDPAPER PFA/OV 008
Figure 16 - Sanding Rotor
Sandpaper
.003"/.004"
Gap
Measured
With Feeler
Gauge
Gap Adjusting Screw
Gap Adjusting Screw
Rotor
Figure 15 - Gap Adjusting Screw
Locations
Blade
NOZZLE
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
3. Remove fuel and air line hoses from
burner head.
4. Removesparkplugwire fromsparkplug.
5. Remove spark plug from burner head
using 13/16" open-end wrench.
6. Remove three screws using 5/16" nut-
driver and remove burner head from
combustion chamber.
7. Place burner head into vise and lightly
tighten.
8. Carefully remove nozzle from burner
headusing5/8" socket wrench (see Fig-
ure 13).
9. Blow compressed air through face of
nozzle.Thiswillfreeanydirtinnozzlearea.
10. Inspect nozzle seal for damage.
11. Replace nozzle into burner head and
tighten firmly (80-110 inch-pounds).
12. Attach burner head to combustion
chamber.
13. Install spark plug in burner head.
14. Attach spark plug wire to spark plug.
15. Attach fuel and airline hoses to burner
head.
16. Replace fan (see page 8).
17. Replace fan guard and upper shell.
Burner Head
Spark
Plug
Combustion
Chamber
Figure 13 - Removing Nozzle
Nozzle
Seal
Nozzle
Face
Nozzle
Burner
Head Fuel Line
Fitting
Air Line
Fitting
Figure 12 - Removing Burner Head
Spark Plug
Wire
Screw
Air Line Hose Fuel Line Hose
SERVICE
PROCEDURES
Continued