Desa Mark140D Construction Heaters Service Instructions

 REDDY
HEATER
PORTABLE HEATERS
MARK 140 DELUXE
B® WITH 10,000-VOLT IGNITION 44
OPERATING, MAINTENANCE and SERVICE
INSTRUCTIONS with PARTS LIST
AN
atomnaster % УЗЛЕ
Master
. Division of Koehring Company
TABLE OF CONTENTS
Section I - INTRODUCTION
General ................ LL LL
Principles of Operation .................... . .
Specifications... .... 0
Section II - OPERATION
Operating Cautions... ............... .......
Extension Cord Wire Sizes ................ .
Fuel ...... AL LL LA ALL ALL 0
Starting .. LL ALL rr,
Stopping .....1011 000 LL LL A LL LL 11100
Section III - MAINTENANCE
Fuel Tank Maintenance ............... . .. .
Air Filters . ......... aaa
Removing Upper Shell .......
Cleaning the Fan... ao,
Cleaning the Fuel Filter ......
Motor Lubrication .................... ..
Burner Removal, Cleaning and Replacement .....
Electrode Replacement and Setting ............ .
Reassembly After Maintenance ............... .
Section IV - TROUBLE SHOOTING
General ...0224 211 LL 4 A LL LA LL LL 10
Examination .................. ..... ...
Test Firing .......... e edxererdereerero,
Section V - SERVICE INSTRUCTIONS
General ......... LL
Special Tools, Equipment and Supplies ..........
Thermostat ...................... . . ...
Transformer .......... ee ee eee ee ee ee
Checking the Motor and Relay .......
Motor Service ....... aaron
Fan Service en
Fuel Filter Service ............. ...... ..
Burner Head Service ......................
Air Pump Repair ........... .... ... . ... .
Reassembly of Heater ......
Control System... .................... ..
Final Check LL LL LL LE
ii
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LWW Www
DON MA ON A
Operation and Service Manual
SECTION |
INTRODUCTION
Section I
Introduction
A. GENERAL
1. Purpose of Heater. Use this heater wherever
you need temporary portable heat. It must be used
with adequate ventilation and proper electrical power.
2. Purposeof Manual. The Service Manual gives
complete instructions for operating, maintaining,
trouble shooting, and servicing the heater. A com-
plete parts list is included at the end of the manual.
B. PRINCIPLES OF OPERATION
Operation of the heater is simple. It involves
four basic systems. (See figure 1.)
1. Fuel System. An air pump on one end of the
motor shaft forces air through the nozzle. The moving
air lifts fuel from the tank by a siphon action and car-
ries it into the combustion chamber in a fine spray.
2. Ignition System. An electric arc that fires
constantly between a pair of electrodes while the heater
is in operation ignites the mixture of fuel and air.
3. Air System. Afanontheotherend of the mo-
tor shaftsupplies additional air to the heater. Part of
this air enters the burner through ports around its
outer edge, and helps complete the combustion of the
burning fuel-air mixture.
The rest of the air from the fan passes over and
around the combustion chamber. At the front of the
heater it mixes with the hot air coming from inside the
combustion chamber. The air then flows out of the
heater as a jet of clean, heated air.
4. Control System. (Deluxe Heaters). In Deluxe
heaters a control system consisting of a light-sensi-
tive cell, a relay, anda circuit breaker will shut the
heater off in case it fails to ignite or if it runs out of
fuel. (The operation of this system is explained more
fully in Section V, Service and Repair Instructions.)
—— COMBUSTION CHAMBER
IGNITION
. ELECTRODES
AIR PUMP
FAN \ —INTAKE AIR
| . FILTER
— BURNER HEAD
>
— QUTPUT AIR
FILTER
L_ MOTOR
N —
OZZLE FUEL FILTER
IGNITION
TRANSFORMER
AIR LINE TO
BURNER
«a FUEL
«73 AIR FOR FUEL SYSTEM
220 АН FOR COMBUSTION AND HEATING
220
Figure 1. Schematic Diagram Showing Principles of Heater Operation
A0876-00
-1-
Operation and Service Manual
C. SPECIFICATIONS
Characteristic 140,000 BTU
Heaters
Output rating
(BTU per hour) 140,000
Air output, approx.
(Cu. ft. per minute) 450
Amperage
(During normal run) 5.5
Weight, approx.
(Pounds) 90
Fuel Kerosene or No. 1 fuel oil
only.
A1462-00
Section I
Introduction
Characteristic 140,000 BTU
Heaters
Fuel tank capacity
(U.S. gallons) 13.5
Fuel consumption, approx,
(Gallons per hour) 1.0
Voltage and cycles
Motor RPM
(115 volts, 60 cycles)
Duct
As shown on heater
instruction plate.
3,450
No duct recommended.
1/68
‘Operation and Service Manual
Section II
Operation
SECTION Il
OPERATION
A. OPERATING CAUTIONS
1. Usetheheater in a well-ventilated area only.
À partly-opened door or window near the heater will
give enough ventilation. We do not recommend the use
ofthis heater as the primary source of heat in sleep-
ing quarters.
2. Use ONLY kerosene or No. 1 fuel oil. DO
NOT USE GASOLINE, AS IT IS VOLATILE AND
DANGEROUS. Do not use No. 2 or No. 3 fuel oil, as
they contain tars ‘which will contaminate the heater.
3. Use the heater only on the specified electrical
ower. This is given on the heater instruction plate.
4. Plug the heater into a grounded receptacle, or
use a grounding adapter. Be sure the heater is ground-
ed whenever it is in operation and whenever you are
working on it.
9. Keep theheater at least 4 feet from any com-
bustible material.
6. Donotusethe heater in the presence of flam-
mable vapors like those from paint or gasoline.
7. Do not add fuel while the heater is operating.
WARNING
The motor has an automatic thermal
overload protector. It may stop due to
low voltage or overload, then RESTART
automatically. Be sure to disconnect the
heater before inspecting the motor.
B. EXTENSION CORD WIRE SIZES
Be sure to use an extension of the proper size to
assure adequate voltage at the heater.
Length of Cord (Feet) 100 200 300 400 500
Wire Size (AWG) 14 12 10 8 6
C. FUEL
Be sure the tank is clean. Fill it with kerosene or
No. 1 fuel oil only. Do not use any other fuel.
When the heater is operated at extremely low temp-
eratures (beyond 10 F below zero), the fuel may con-
geal. Topreventthis, add Frostex or similar anticer
to each 5 gallons of fuel.
D. STARTING
a. Plugthecordintoanoutletthatwill give power
of the same voltage and frequency as stated on the in-
struction plate. Set the thermostat to call for heat.
A1463-00
b. Press the red reset button on the rear of the
heater. The heater should start immediately.
e. Iftheheater fails to start, the red button will
pop out in from 15 to 40 seconds, depending on sur-
rounding temperature. If it pops out, wait from 3 to
o minutes for the circuit breaker to cool, then press
the red button again, after checking for the reason the
heater did not start.
E. USE OF THERMOSTAT
Set the thermostat dial to the desired temperature
forautomatic control. For continuous operation, set
the dial to ON.
F. STOPPING
Tostopthe heater unplug the heater cord from the
outlet. (If the heater has a thermostat, set the dial to
OFF.)
1/68
Operation and Service Manual
Section III
Maintenance
SECTION lil
MAINTENANCE
Maintenance consists of the simple operations the
owner or user of the heater can perform to keep the
heater running and in good condition. If ordinary main-
tenance fails to return the heater to good operating
condition, refer to Section IV in this manual for check-
ing and trouble shooting. See Figure 2 for maintenance
points.
A. FUEL TANK MAINTENANCE
Drainthefuel tank after every 150 hours of oper-
ation, or whenever necessary, and flush it out with
clean fuel. Refill with new clean fuel.
B. AIR FILTERS
1. Check and clean the intake air filter often.
The filter needs cleaning if you can see a film of dust
on it. It will need cleaning more often if the heater is
operated in dusty air.
2. To clean the intake air filter. simply pull it
out of the housing. Wash it with a mild detergent and
hot or cold water. Dry it thoroughly. and replace it
in the housing.
CAUTION: Do not oil the filter element.
3. Replacethe output air filter once each heating
season.
4. Toreachthe output air filter. remove the four
screws whichattachthe filter housing end cover. Lift
the output air filter out.
NOTE: Cleaning the output air filter may cause a
change in the air pump output pressure. If
the heater burns improperly after cleaning,
have the air pump pressure checked. See
Section V, paragraph L.
COMBUSTION CHAMBER
¥ BURNER
SHELL ATTACHING—?
SCREWS
<.
| ><.
LOWER SHELL
~
~
\
* ELECTR
(#1 ELECTRODES ~
>
FUEL TANK — ^^.
(x) TRANSFORMER ——e
™
{120,000 BTU HEATERS) (%) FUEL FILTER
~~
ь a
LOCATION OF THERMOSTAT N
LOCATION OF ~~
STARTING AND >
CONTROL RELAYS >
UPPER SHELL
INTAKE
| > AR FILTER(3)
Y
<ÓUTPUT
~~ AIR FILTER
(INSIDE HOUSING) (x)
!
LINT FILTER
| (INSIDE HOUSING) (%)
| и
„и RED BUTTON OF AUTOMATIC
| 7 CONTROL
/
340
Figure 2. Heater Maintenance Points
Symbol (*) indicates parts recommended as replaceable by owner or user of heater.
(Heater shown without wheels and handles, and with upper shell removed, for clarity.)
A0772-00
Operation and Service Manual
5. When changing the output air filter, clean the
lint filter. Pick it out of the housing, wash with mild
detergent and hot or cold water. Dry thoroughly. Do
not oil. a
6. Replacethe lint filter, the output air filter. the
filter housing end cover, and the screws and washers.
C. REMOVING UPPER SHELL
NOTE: You will need to remove the upper shell in
order to perform the rest of the maintenance
operations. The heater will not operate
properly if the upper shell is not in place.
Remove the upper shell by loosening the six screws
(3 on each side) that hold the upper shell to the lower
shell. Lift the upper shell off.
WARNING
Withthe upper shell removed and the serivce
cord plugged in, the heater can be dangerous.
Be careful to keep away from the transformer
leads and the fan when the upper shell is
off.
To replace the upper shell, slip the six slots lo-
cated along its lower edge over the six screws in the
lower shell, and tighten the screws.
D. CLEANING THE FAN
Cleanthe fan blades after every 500 hours of oper-
ation, or whenever you see that they are getting dirty.
Abuild-up of dirt will reduce the air supply and cause
faulty operation.
To clean, wipe the blades with a cloth moistened
with kerosene or solvent. Be careful not to bend the
blades. Dry the fan thoroughly.
E. CLEANING THE FUEL FILTER
The fuel filter is the tube which leads up from the
fuel tank to the burner. Clean it twice each season,
or if the Trouble Shooting Chart indicates.
1. To remove the fuel filter, loosen the hex nut
that attaches it to the burner, and slide the nut back
on the tube. Then turn the tube to one side, and pull
it up out of the tank.
2. Rinsethefuelfilter several times in clean fuel.
Blow it dry through the fitting end.
3. Blow the filter dry through the fitting end.
4. When reinstalling the filter, moisten it with
fuel so it will slip into the grommet in the fuel tank
top. Position the filter carefully, so the hex nut will
line up properly with the threads of the elbow installed
in the burner. Then tighten the nut securely.
NOTE: IÎthe burner head is to be removed for main-
tenance, donot reinstall the fuel filter until
ready to reinstall the burner.
A0385-01
-5-
Section III
Maintenance
RUBBER SLEEVE
/ SEAL WASHER
J и SPRING
—- SEAL WASHER
,
„ны РАСЕ
NOZZLE PASSAGE
AIR HOSE
24
Figure 3. Blowing out nozzle with compressed air.
F. MOTOR LUBRICATION
The ball bearing on the pump-end of the motor is
lubricated for the life of the motor. Do not lubricate
it.
Oil the sleeve bearing on the fan-end of the motor
once each heating season with a few drops of No. 30
oil, Arctic C oil, or electric motor oil. Do not over-
oil.
G. BURNER REMOVAL, CLEANING, AND REPLACEMENT
NOTE: Ifthe electrodes need to be replaced or ad-
justed, it is necessaryto remove the burner
head.
1. Be sure the heater cord is unplugged, and re-
movethe leadwiresfrom the electrodes. Remove fuel
filter from burner head,
2. Loosenthe screwthat fastens the burner to one
of the fins on the rear of the combustion chamber.
‘Twist the burner clockwise to disengage it from the
grooves in the fins, then draw it straight back and lift
it out.
3. Remove nozzle. carefully.
wrench.
using a socket
CAUTION: Do not attempt to open the nozzle pas-
sage with a steel drill, a wire, or any
other tool, as you will damage it beyond
repair. Protect the nozzle face from
damage while the burner is out of the
heater. This is important!
4. Soakthe complete burner head for one hour in
non-flammable liquid cleaning agent. (DO NOT use
kerosene or fuel oil.) Blowdrythroughfittings in rear
of head. Blow the nozzle dry through the face (OUT-
LET) end ONLY.
9. Re-checkelectrode settings after cleaning the
burner. See paragraph H of this Section.
Operation and Service Manual
— в 1/8 INCH BETWEEN
ELECTRODE
323
Figure 4. Electrode Setting Diagram
6. When reinstalling the burner, be sure it is
started straight. The fins on the combustion chamber
couldbebent if the burner were forced into position at
anangle. Whentheburner is inposition, turn it clock-
wise to lock it, then tighten the screw.
7. Insert the electrode leads until they snap into
place, to prevent loosening as the heater is moved.
CAUTION: Donot attempt to repair the nozzle as a
— partofroutine maintenance. If the noz-
zle needs to be repaired, see Section V
of this manual.
H. ELECTRODE REPLACEMENT AND SETTING
Replace bothelectrodes if the old ones are cracked
or excessively dirty.
NOTE: Remove the electrodes through the nozzle-
side of the burner. The tips could be dam-
aged if the electrodes were removed or in-
serted through the rear of the burner.
1. To remove, loosen the clamping screws.
A0386-02
Section II -
Maintenance
ELECTRODE
PORCELAINS
SET SCREWS
SET TiPS OF
ELECTRODES
AT POINTS
WHERE LINES
CROSS
ELECTRODE
SETTING GAGE
{PART NO.
Mi13489G1)
PLACE “75,000-
120,000 8TU"
END OF GAGE
SQUARELY
OVER NOZZLE
GAGE N
TIGHT т
AGAINST 1 |
BURNER iJ
2054
Figure 5. Use of Electrode Setting Gage
2. When reinstalling the electrodes, place the
metal bands directly under the screws, with the slot
inthe band positioned opposite (180° from) the screw.
This will prevent damage to the porcelain when the
screws are tightened. If the porcelain is cracked, the
electrode will short-out through the burner.
3. Referto Figure 4 for electrode settings. Fig-
ure 5 shows how to use the Electrode Setting Gage,
Part No. M13489G1, which is available from your
dealer. Usethe 75, 000 - 120, 000 BTU end of the gage
when setting the electrodes on these heaters.
4. Whenthe electrode tips are positioned correct-
ly, tightenthe screws enough to prevent the electrodes
from shifting, then reinstall the burner head.
|. REASSEMBLY AFTER MAINTENANCE
Putthe heater back together in the reverse order
of disassembly. Be sure all parts are in place and all
screws and electrical connections are tight, before at-
tempting to use the heater.
+
‘Qperation and Service Manual
Section IV
Trouble Shooting
SECTION IV
TROUBLE SHOOTING
A. GENERAL
If normal maintenance fails to keep a heater in
good operating condition, it probably requires repair
or replacement of some parts. Examine it and test-
fire it to gain first-hand knowledge of why the service
might be needed.
This section tells how to examine and test-fire the
heater. It also contains a Trouble Shooting Chart for
help in diagnosing heater troubles and finding the re-
medies.
B. EXAMINATION
1. Check the fuel tank for sludge and water. If
you find it, expect to find a dirty nozzle and/or fuel
filter.
2. Spinthefan to be sure it turns freely. If it is
stiff, lookfor a worn or dry bearing on the fan-end of
the motor, or for a binding pump rotor.
3. Checkthe heater for dirt and foreign materials
around the pump, fan, and air filters. Be sure the
heater is reasonably clean before test-firing it.
4. Check the heater cord for obvious breaks or
other unsafe conditions. If the cord is doubtful, repair
it or install a new one before test-firing.
C. TEST-FIRING
1. Clean the fuel tank and fill it with at least 3
gallons of fuel. A minimum of 3/4 gallon of fuel must
be in the tank for proper test-firing.
2. Clean the air intake filter. (See Section III,
paragraph B.)
3. Check and adjust the air pressure. as de-
scribed in Section V, paragraph L, except that fuel
must be used for test-firing.
NOTE: Itisnot possible to test-fire a heater prop-
erly if this adjustment cannot be made.
4. Allow the heater to run for 15 minutes. Ob-
serve its operation during the test-run.
5. After makingthe pressure check, adjustment,
and test-firing, remove the gage and reinstall the plug.
6. If any troubles show up during the test-firing,
refer to the Trouble Shooting Chart to find out how to
correct them.
D. TROUBLE SHOOTING
The following chart lists the problems you might
findin a heater. For each problem, there is a list of
‘Possible Causes’. The "Remedy" column tells you
how to correct the problem, or tells you by means of
a section and paragraph number where to find detailed
instructions for correcting it.
In trouble shooting, remember that the air pump
is part of the fuel system, because the air it supplies
lifts the fuel from the tank and pushes it through the
nozzle.
NOTE: Be sure to follow all cautions and warnings.
They will help you prevent damage to the
heater or injury to yourself.
TROUBLE SHOOTING CHART
PROBLEM POSSIBLE CAUSE
FOR FURTHER
REMEDY DETAILS SEE:
1. Motor does not Electrical Troubles
start; thermostat
(if used) is set to a. No power or low voltage
call for heat, at heater.
Be sure power is reaching heater;
check condition of heater cord.
Repair or replace as needed.
Sec. II,
Para. B.
Use extension cord with wires
heavy enough to carry the elec-
trical load of the heater.
Be sure voltage at outlet is same
as shown on heater instruction
plate.
A0387-01
Operation and Service Manual
TROUBLE SHOOTING CHART (Continued)
Section IV '
Trouble Shooting
PROBLEM
POSSIBLE CAUSE
REMEDY
FOR FURTHER
DETAILS SEE:
1. (Continued)
Motor does not
start, thermostat
(if used) is set to
call for heat,
c. Thermostat (if used) damaged.
Damaged motor, motor
starting relay, motor
starting capacitor, or mo-
tor starting switch; binding
fan-end bearing; binding
pump.
Check motor (and starting relay,
if used).
Replace a defective motor or
motor starting relay.
Install a starting capacitor that
is known to be good,
Lubricate motor (Fan-endonly),
Rebuild motor.
Rebuild or replace a binding pump.
Replace.
Sec. V,
Para. F.
Sec. V,
Para. F.
Sec, III,
Para, F.
Motor Mfr's.
Instructions
Sec. V,Para, К.
Mechanical Troubles
d. Dry bearing on fan-end of Lubricate motor. If lubrication Sec. III,
motor. does not solve problem, check Para. F.
pump.
e. Pump rotor binding or car- | Rebuild pump. Sec. V,
bon blades worn out. Para. K.
f. Fan obstructed by mechani-| Check for bent fan guard or Sec. V,
cal damage or dirt. outer shell, Para. H.
Check for damaged fan; replace
if defective.
Check for damaged motor mount,
2. Heater will not Fuel System Troubles
ignite, but motor
runs. a. Fuel tank empty, water in Check for water in tank: clean
fuel, wrong fuel. tank and fuel filter if water is
found. (Water in the tank will
form globules in the bottom,
which you can see.)
Fill tank with new, clean kero-
sene or No. 1 fuel oil.
b. Fuel filter clogged. Remove and wash in clean fuel. Sec. III,
Blow dry and replace. Para. E.
с. Nozzle plugged or defec- Clean by blowing compressed air Sec. III,
tive. through nozzle from outlet end of Para. G.
nozzle.
Replace nozzle if cleaning does Sec. V,
not solve the problem. Para. J.
d. Low air pump pressure. Check pressure; adjust, rebuild, Sec. V,
or replace air pump as needed. Paras. K & L.
Check rubber sleeve around Sec. V,
Para. J.
shank of nozzle; replace if leak-
ing.
A0388-01
Operation and Service Manual
TROUBLE SHOOTING CHART (Continued)
Section IV
Trouble Shooting
-
PROBLEM
POSSIBLE CAUSE
REMEDY
FOR FURTHER
DETAILS SEE:
2. (Continued)
Heater will not
ignite, but motor
runs.
Ma
3. Heater burns, but
puffs of smoke can
be seen; heater
Will not burn
steady; heater
burns with odor,
heater smokes
continuously.
head.
Replace with new filter and
fitting if connection can't be
tightened without leaks.
d. Low air pump pressure. Check to be sure all air line con-
(Continued) nections from pump to burner are
secure.
Check to be sure air filter end
cover is securely fastened, with-
out air leaks.
Be sure air filters are clean. Sec. III,
Para. B.
Check fuel filter for air leaks
e, Air leak at fuel and for tightness of fitting where
filter. filter is connected to burner
head.
Ignition Troubles
e. Electrode gap too wide, Measure gap, check electrodes Sec, III,
electrode bent or broken, and porcelains for damage. Re- Para. H.
electrode porcelain adjust or replace as needed.
cracked.
f. Electrodes wet with fuel Wipe dry and check adjustment; Sec. III,
or carboned. replace if carboned. Para. H.
g. Electrode wire discon- Disconnect heater cord! Check
nected from electrode or electrode wires at electrodes
transfornier. and transformer output termin-
als.
h. Defective transformer. Disconnect electrode wire from Sec. V,
transformer and check trans- Para. E.
former for spark. Replace
transformer if no spark can be
obtained when service cord is
plugged in.
Improper Fuel-Air Mixture (Not enough fuel)
a. Heater running out of fuel; Shut heater off; check fuel tank.
water condensation in If you can see globules of water
fuel tank; wrong fuel. in the bottom, drain and flush
the tank and filter with clean fuel.
Refill with new, clean kerosene
or No. 1 fuel oil.
b. Dirty air filters causing Remove and clean the air filters. Sec. III,
reduced air flow through Para. B.
nozzle, resulting in low Be sure air intake is not blocked.
fuel flow.
c. Fuel filter loose, leaky, Remove. and wash fuel filter in Sec. III,
or dirty. clean fuel. Para. E.
Check condition of connection Sec. V,
between fuel filter and burner Para. I.
A0389-01
Operation and Service Manual
TROUBLE SHOOTING CHART (Continued)
Section IV
Trouble Shooting
FOR FURTHER
PROBLEM POSSIBLE CAUSE REMEDY DETAILS SEE:
3. (Continued) d. Dirty nozzle. Remove and clean the burner Sec. III,
Heater burns, but head. Para. G.
puffs of smoke can
be seen; heater Blow compressed air through
will not burn nozzle from outlet end.
steady; heater
burns with odor, Never use a drill, wire, or other
heater smokes tool to open a nozzle passage.
continuously. .
Replace a defective nozzle. Sec. V,
Para. J.
e. Low pump output pres- Check and adjust pump output Sec. V,
sure. (Low motor speed, pressure; repair or replace Paras. K & L.
worn pump, pump out of pump if adjustment cannot be
adjustment.) made.
Check to be sure that no dirt or
trash (or dirty fan blades) could
be causing motor slowdown.
Lubricate fan-end bearing of Sec. III,
motor. Para. F.
f. Loose air output line con- Be sure connections are tight,
nections between filter
housing and burner.
g. (Remote possibility) If heater puffs intermittently, Sec. V,
Rubber sleeve on shank replace the rubber sleeve, Para. J.
of nozzle is leaking, (Handle parts carefully to
prevent damage; assemble
them carefully to preserve
airtightness,)
h. (Remote possibility) Adjust fins for good fit of
Combustion chamber not head to combustion chamber,
tight against burner head, There must be no air gap
allowing too much air to tween face of burner head
enter combustion and back of combustion
chamber, chamber,
4, Flames come out Improper Fuel-Air Mixture (Too much fuel, or not enough air for
front of heater. amount of fuel being supplied.)
a, Dirty fan, or air passage- Clean the fan. Be sure the air
way through heater blocked | passageway through the heater is
by dirt or trash. clean, Keep the heater clean.
b. Pump output pressure is Check and adjust pump output Sec. V,
too high, causing too much pressure, Para. L,
fuel to be supplied.
с. Fan loose or improperly Check fan; correct if not right, Sec. V,
located on shaft, Para. H.
d. Bent or damaged fan. Replace, Donotattempt repair
of fan.
e. Burner pins not tight in Be sure burner is installed Sec, III,
slots; bent fins on com- properly without bending fins, Para. G.
A0390-01
bustion chamber.
-10-
. Operation and Service Manual
TROUBLE SHOOTING CHART (Continued)
Section IV
Trouble Shooting
PROBLEM
POSSIBLE CAUSE
REMEDY
FOR FURTHER
DETAILS SEE:
5. Heater cycles in-
termittently.
Electrical System Troubles
a. Thermostat (if used) set
Set thermostat to a higher tem-
too low. perature for more even operation.
b. Defective thermostat (if Replace a defective thermostat. Sec. V,
used). Para. C.
c. Low voltage causing trip- Check power line voltage.
out of motor overload pro-
tector. Use extension cord with proper Sec. II,
size wire. Para. B.
d. Defective electrical sup- Be sure extension cord and heat-
ply or defective connec- er service cord are in good con-
tions. dition, without intermittent open
circuits,
Check mechanical and electrical
soundness of all wiring connec-
tions in the heater and service
cord.
e. Motor overload protector Lubricate fan-end bearing. Sec. III,
tripping out due to motor Para. F.
trouble or binding pump. Keep motor and fan area clean.
Replace defective motor or re- Sec. V,
build defective pump. Paras. F, G,
& K.
CAUTION: Keep fingers away
from fan when heat-
er service cord is
plugged in.
A0598-00
-11-
| CONTROL SYSTEM TROUBLE SHOOTING -- SEE PAGE na)
Operation and Service Manual
TROUBLE SHOOTING CHART (Continued)
Section IV
Trouble Shooting
FOR FURTHER
PROBLEM POSSIBLE CAUSE REMEDY DETAILS SEE.
6. Control System Troubles Sec. V,
Para. N.
6A. Heater ignites, a. Defective photo cell.| Check to see if glass face of cell is so dirty it
but red button can't "see the flame; clean glass if dirty.
f ci .
of clreuit Replace with a cell that is known to be good.
breaker pops
out anyway. b. Defective control Replace with a relay that is known to be good.
relay (remote
possibility of
this.)
с. Defective elec- Be sure all solder joints and wiring connections
trical connections [are secure. Check wiring diagram.
in circuit through
cell and coil of
control relay.
6B. Circuit breaker a. Defective circuit Replace with a circuit breaker that is known to
fails to trip breaker.
be good.
when a no-flame
CL b. (Remote chance of
condition exists.
this.) Relay con-
tacts dirty or
defective.
If contacts are accessible, clean them with the
corner of a postcard.
Replace defective relay with one that is known
to be good.
c. Open connection
in circuit through
circuit breaker,
resistor, and
relay contacts.
Check solder-joints and clip-on connections.
Resetting is tried
too soon after the
breaker trips.
6C. Button on circuit a.
breaker won't
stay in when
Wait 5 minutes and try again.
pressed. b. Defective circuit
breaker.
Replace with a circuit breaker that is known to
be good.
A0599-00
-11А-
. Operation and Service Manual
Section V
Service and Repair Instructions
SECTION V
SERVICE AND REPAIR INSTRUCTIONS
A. GENERAL
This section covers replacement of parts, repair
and rebuilding of heater components, and the making
of adjustments. Check to be sure the maintenance of
the heater has been done, before going into the more
extensive service operations. The heaters can be
completely rebuilt and checked in less than one hour.
Whenever a part needs to be replaced, you can
identify it on the exploded view in the Parts List por-
tion of this book, Section VI. Order any needed part
by name and part number:
B. SPECIAL TOOLS, EQUIPMENT, AND SUPPLIES
The following tools, equipment and supplies should
be available for complete servicing of the heater.
1. Air Gage, Part No. M9148, or any gage with
a 15 pound pressure range and 1/4 pound divisions,
able to indicate 4-1/4 pounds accurately, plus fittings
for installation into a 1/8 inch standard pipe-threaded
hole.
2. Oil Burner Nozzle Wrench, or any deep 5/8
inch socket wrench.
3. Cleanfuel, either kerosene or No. 1 fuel oil.
4. Non-flammable liquid cleaning solvent, such
as carbon tetrachloride.
CAUTION: Fumes are poisonous; use with GOOD
ventilation.
9. Compressedair is advisable, but not absolute-
ly necessary.
С. THERMOSTAT
I you suspect that thermostat failure is prevent-
ing the heater from starting, and the thermostat is set
to call for heat, check it as follows:
1. Turnthe knobfrom OFF to ON, slowly, through
the full range of the thermostat, two or three times.
(The thermostat has positive OFF and ON positions.)
If the heater does not start, proceed as follows.
2. Unplug the heater service cord from the out-
let, and take out the four screws that hold the ther-
mostat to the transformer housing. Connect a jumper
wire across the two terminals of the thermostat.
(Leave the heater's wiring connected to the thermostat
terminals.)
3. Plug the heater service cord into an outlet.
If the heater motor starts, the thermostat is de-
fective and must be replaced. If the motor does not
start, the thermostat is probably not the cause.
Al460-00
-12-
О. REMOVAL OF UPPER SHELL
It will be necessary to remove the upper shell in
order to perform the rest of the service operations on
the heater. See Section HI, paragraph C.
WARNING
With the upper shell removed and the service
cord plugged in, the heater can be dangerous.
Be careful to keep away from the transformer
leads and the fan when the upper shell is off.
E. TRANSFORMER
Check the transformer as follows:
WARNING
Be EXTREMELY careful when checking the
transformer. A transformer in good condition
produces VERY high voltage at the output ter-
minals. `
1. Placeascrewdriver witha GOOD INSULATED
HANDLE in contact with one of the output terminals.
Bring the tip of the screwdriver near the other termi-
nal. Atransformer in good condition will make a spark
about 3/16 inch long jump from the tip to the terminal.
If no spark jumps, check the wiring to the transform-
er. If the transformer is receiving power but produces
no spark, it is defective and must be replaced.
2. Toreplace the transformer, take the nuts off
the two mounting studs which come through the trans-
former mounting bracket inside the heater shell, and
take the transformer and its housing out of the heater.
3. Remove the housing by straightening the
mounting tabs.
4. Replace the housing, then install transformer
and housing into the heater shell. Make wiring con-
nections according to the Wiring Diagram, Figure 6.
5. Besure the electrode leads are snapped tightly
onto the transformer output terminals, to prevent their
coming loose when the heater is moved.
F. CHECKING THE MOTOR
AND STARTING CAPACITOR
In case the motor fails to start when the cord is
plugged in or the thermostat is set to call for heat,
check the motor and its starting circuit components
‘as described in the following paragraphs.
1/68
Operation and Service Manual
WARNING
The motors contain an automatic thermal
overload protector. This may stop the motor,
due to overload or low voltage. then RE-
START itautomatically. Be sure to disconnect
the heater before inspecting the motor.
1. Mechanical check. Spin the motor by turning
the fan blades by hand. If the motor turns freely,
make the electrical check as described in paragraph
2. Any stiffness of the motor indicates mechanical
troubles. See "Motor Service", paragraph G of this
Section.
2. Theheaters have 1/4 horsepower motors, with
internal starting switches and external starting capa-
citors. (See the Wiring Diagram, Figure 6.)
a. Failure of the motor to start could result
from a failure of the starting capacitor, or from an
internal fault in the motor, such as failure of the
starting switch or failure of the thermal overload pro-
tector.
Section V N
Service and Repair Instructions
b. Tocheck the capacitor, replace it with a
new one and try the motor. If the motor starts, the
oldcapacitor was bad. Leave the new capacitor in the
circuit.
c. Ifthe motor fails to start with a new cap-
acitor inthe circuit, remove the motor, install a new
or rebuilt motor, and send the defective motor to the
nearest Robbins and Myers service station for rebuild-
ing, or order a replacement motor from the factory.
NOTE: Whensending the motor away for repairs,
remove the fan, theair filter housing, and
the pump end cover. Take out the rotor
and carbonblades. (See paragraph K for
pump service instructions.)
G. MOTOR SERVICE
1. Applyafew drops of oil to the fan-end bearing
of a stiff motor. If this fails to correct the starting
difficulty, rebuild the pump, as described in paragraph
K of this Section.
BURNER
HEAD PHOTO CELL
RELAY
BLUE
WIRE
MID POINT RED WHITE NUTS
INTERNAL WHITE
GROUNO CAPACITOR
ME $ RESISTOR
TRANSFORMER ORANGE
2
BLACK L RED A
a —44
CIRCUIT
BREAKER
ame BLACK
| IRE NUT
BLACK WIRE NU
THERMOSTAT
338
Figure 6. Wiring Diagram
A1471-00
1/68
Operation and Service Manual
SETSCREWS MUST REST
IN INNER GROOVE IN
MOTOR SHAFT
MOTOR SHAFT
К72
OUTER GROOVE
AAN
FAN HUB
MOTOR
283
Figure 8. Location of Fan on Motor Shaft.
2. During rebuilding of the pump, checkthe motor
again for stiffness. If stiffness still exists, rebuild the
motor according to the manufacturer's instructions.
3. Whenever amotor has been rebuilt, be sure to
check the pump rotor clearance as described in para-
graph K-4 of this Section, before reassembling the mo-
tor into the heater.
4. When you install the motor, insert the spacers
between the ends of the motor clamps.
H. FAN SERVICE
Replace a damaged or bent fan. Do not attempt
repair except as a temporary emergency measure.
Loosen two setscrews to remove the fan from the mo-
tor shaft.
Be sure the replacement fan has the same blade
pitch as the fan that was removed. This is important
inorder to retain the air flow and combustion charac-
teristics of the heater.
Check for proper fan location of the motor shaft.
Make sure the fan is in the same position and location
as before it was removed. See Figure 8.
I. FUEL FILTER SERVICE
1. Remove the fuel filter from the heater and clean
it, as described in Section III, paragraph E.
2. When reinstalling the fuel filter, check the
grommet where it enters the fuel tank. Be sure the
grommet is in good condition -- not cut or cracked.
Replace a damaged grommet.
A0413-00
-14-
Section V
Service and Repair
3. Reinstall the fuel filter according to Section
Ill, paragraph E. Replacewitha new filter if the con-
necting parts are damaged to prevent a tight connection.
J. BURNER HEAD SERVICE
1. Remove the burner head and take out the elec-
trodes. Clean the entire burner head, as described
in Section III, paragraph G.
2. If there is any sign of damage to the nozzle.
or if itis impossible to clean out the nozzle by blowing
compressedair into it through the outlet-end, replace
witha new nozzle. Always blow anozzle out thoroughly
with air, from the outlet-end, before installing it into
the burner.
CAUTION: NEVER try to open a nozzle passage
with a drill. Any change in the size or
shape of the passage will damage the
nozzle beyond repair. Donotdisassem-
ble the nozzle, as flow characteristics
are changed by disassembly. Protect
the passage from damage whenever you
work on the burner or nozzle.
3. Always install a new rubber sleeve whenever
you install anozzle into the burner. The sleeve is the
partthat helps maintain the needed pressure difference
between the air and fuel chambers of the burner head.
If bubbles have appeared in the fuel tank during opera-
tion, the rubber sleeve is probably leaking and should
be replaced.
4. Be sure the seal washer, spring, and second
seal washer are in place on the nozzle before you in-
stall the rubber sleeve.
5. When seating the nozzle firmly against the
burner head, do not apply too much pressure with the
wrench, or the nozzle could be distorted.
6. Adjust the electrodes as explained in Section
III, paragraph H.
K. AIR PUMP REPAIR
NOTE: Because of the close tolerances and criti-
cal positioning of the parts, we recommend
that only skilled mechanics attempt any re-
pair of the air pump.
The heater's air pump consists of a rotor with
four carbonblades, rotating inside a pump body. The
rotor is driven directly by the motor, and is supported
by the ball-bearing end of the motor. One of the pump
end plates is the motor's back end plate. The other
pump end plate is part of the housing for the air intake
and outlet filters.
Handle all pump parts with care and keep them
clean, The parts are made with close tolerances. Dirt
and oil on pump parts will hinder the performance of
the pump.
If pump repair is required, you may order a com-
plete pump package, or individual parts, as shown in
the Parts List, Section VI.
Operation and Service Manual
1. Disassembly. В
CAUTION
Do not take the pump apart any further than
you need to in order to reach the parts which
must be replaced.
a. Remove the end cover and take out the in-
take and outlet air filters and the lint filter. Discon-
nect the air line from the elbow on the remaining por-
tion of the air filter housing.
b. Holdaclean, dry clothunder the pump, and
remove the six screws that hold the end cover to the
pump body. Catch the carbon blades in the cloth, if
they fall out as the pump body is removed.
с. Takeall four carbon blades out of the rotor.
Pull the rotor and the spring off the motor shaft.
2. Replacing Carbon Blades.
a. Wornor sticking carbon blades cause loss
of air pressure. If the blades are worn, or are stick-
ing in the rotor slots, replace them. (It is not neces-
sary to remove the rotor or the pump body to replace
the carbon blades.)
b. Washthe rotor, end cover, and pump body
in non-flammable cleaning solvent and blow them dry
before you install new blades.
c. Install the carbon blades into the slots, with
the notched ends of the blades inside the slots and the
rounded ends toward the outside.
3. Replacing the Rotor.
Use a new rotor only if deep grooves or uneven
Section V
Service and Repair
wear appear on the surfaces. Check the spring for
wear, and replace it if worn or loose.
To remove the rotor, firstremove the pump body.
When installing the rotor, take care to keep it perpen-
dicular to the motor shaft.
4. Reassembly of Air Pump.
a. Install the spring in the pump rotor as shown
in Figure 8,then assemble the rotor onthe motor shaft.
Attach the pump body to the motor with the two top and
bottom recessed screws which were removed to take
it off.
b. Adjust the pump body to provide 0.003 to
0.005 inch clearance at the point shown in Figure 8.
Measure the clearance with a feeler gage. Spin the
motor by hand to be sure the rotor does not rub on the
pump body. The proper clearance must be maintained.
Be sure the screws are tight after adjusting the clear-
ance.
с. Insert carbon blades as described above.
d. Install the end cover, using the six screws
whichwere removed. Reconnect the air line to the el-
bow in the end cover.
L. ADJUSTMENT OF PUMP PRESSURE
1. Remove the plug from the air filter housing,
and install the pressure gage (listed in paragraph B
of this Section) into the hole. See Figure 9.
2. Starttheheater. (Youdo not need to have fuel
in the tank for this pressure check and adjustment.)
3. Pump pressure must be 5 pounds per square
inch, plus or minus 1/16 pound. If the pressure is not
within this range, adjust the pressure relief valve.
PUMP ROTOR MOTOR END
SHIELD
MOTOR SHAFT
0.005"
CLEARANCE -
MEASURE WITH
SPRING FEELER GAGE
BLADE PUMP
BODY
GAP ADJUSTING SCREWS 2178
~~
LOCKING NUT
ADJUSTING
SCREW
7
2248
Figure 8. Checking Clearance of Air Pump Rotor Figure 9. Checking and adjustment of Air Pump Pressure
-15-
А0787-00
" Operation and Service Manual
4. To adjust, back off the locking nut 1/4 turn.
Screw the valve stém in to raise the pressure; out to
lower it. Tightenthe locking nut securely and recheck
the pressure,
о. Remove the gage and replace the plug.
M. REASSEMBLY OF HEATER
1. Put the heater back together in the reverse
order of disassembly,
2. Check all wiring to be sure it agrees with the
wiring diagram. Be sure all electrical connections
are tight.
3. Tighten the connections at both ends of the
copper air line, and tighten the connection where the
fuel filter is assembled to the burner head.
4, Makesurethe electrode leads are snapped onto
the electrodes and the transformer output terminals.
о. Be sure all parts are in place and the screws
are tight before attempting to use the heater.
N. CONTROL SYSTEM
1. Description,
The control system used in Deluxe heaters is de-
signed to shut the heater off in case it does not ignite,
or in case the flame should go out during operation.
The control consists of three main parts: (1) A
light-sensitive cell which "sees into the combustion
chamber; (2) A control relay whose coil is controlled
by the cell; and (3) A circuit breaker whose internal
heating coil is controlled by the relay contacts.
A0601-00
Section V
Service and Repair
2. Operation.
When the heater is first plugged in, the heating
coil inside the circuit breaker starts to warm up.
If no ignition takes place, the circuit breaker will
trip. When it trips, it shuts off all power to the heater,
After a trip-out, the circuit breaker must be man-
ually reset by pressing the red button.
If ignition takes place, the cell "sees" the flame,
It then allows enough current to flow to operate the
control relay, The relay breaks the circuit to the in-
ternal heating coil in the circuit breaker, and the cir-
cuit breaker's main contacts will then stay closed to
keep the heater operating.
If the heater should lose its fire during operation,
the circuit breaker will trip after a short tim e, shut-
ting off all power to the heater,
3. Service,
Since no adjustment is possible on the parts of the
control system, serviceis limitedto cleaning the glass
face of the light-sensitive cell, cleaning the dirt from
the exposed contacts of the relay (if the contacts are
exposed), and replacing defective parts of the system
with parts that are known to be good.
O. FINAL CHECK
Putatleast two gallons of fuel in the fuel tank and
test-fire the heater for a few minutes, after all service
has been completed, to be sure it will operate satis-
factorily.
-16-
Operation and Service Manual Section V
Service and Repair Instructions
BASIC HEATER ASSEMBLY
See Figure 11 for Wheels and Handles : 5/5
12 for Automatic Control Parts
13 for Burner Head Assembly
14 for Motor Package Assembly
Figure 10. Basic Assembly Exploded
Al464-00 -17- 1/68
+
+
Operation and Service Manual
SECTION VI
ILLUSTRATED PARTS LIST
This section contains a list of all replaceable parts
used in the heater covered by this manual. The only parts
that are recommended for replacement by the heater's owner
or user are indicated by the symbol (*).
- When ordering parts.
GENERAL ASSEMBLY,
Index Part
No. Number Part Name Quan.
1 M13520GI Shell, Upper 1
2 M16878G1 Combustion Chamber 1
3 M16679 Deflector, Heat 1
4 M11084-27 Screw, 10-12 x 1/2, Type À
(Combustion Chamber to
Lower Shell) 2
5 M11084-29 Screw, 10-12 x 3/4, Type À
(Combustion Chamber to
Lower Shell and Support
Bracket) 4
6 (Not Used)
7 *M12947G3 Burner Assembly (See Figure
13) 1
8 *M10816G12 Electrode Lead Assy (Alternate:
Part No. M10816G21) 2
9 *M16667G1 Fuel Filter Assembly 1
10 *M16668 Air Line 1
11 M6087 Grommet 1
12 M12830 Housing, Fan 1
13 M11084-27 Screw, 10-12 x 1/2, Type A
(Fan Housing to Lower Shell) 4
14 M13038 Fan, 9° Pitch 1
15 No Number Setscrew, Soc. hd, cup pt.,
1/4-28 (Fan to shaft) 2
16 M16674Gl Motor Package Assembly
(See Figure 14) 1
17 HC4-10C Screw, 1/4-20 x 1-1/4, Hex
hd (Motor Clamps) 2
18 M10964-1 Clamp, Motor 4
19 M13620 Spacer, Motor clamp 2
20 WLM-4 Washer, Lock, 1/4
(Motor Clamps) 2
21 NPC-4C Nut, Hex, 1/4-20 (Motor
Clamps) 2
22 M12828 Bracket, Shell Support 1
23 M11084-27 Screw, 10-12 x 1/2, Type A
(Shell Support Bracket to
Fuel Tank Assembly and’
Lower Shell) 6
24 M12829 Bracket, Motor Support 1
25 1000577 Grommet 2
26 M11084-27 Screw, 10-12 x 1/2, Type A
(*) Parts recommended for normal service replacement.
Al465-00
(Motor Support Bracket to
Lower Shell and Fuel Tank Assy) 6
-18-
of the heater.
Section VI
Illustrated Parts List
Check the model decal for the correct model number
Include the model and serial number when
ordering parts. Order parts by part name and part number
only. Do not use the index numbers from the illustration
MARK 140 DELUXE
Index Part
No. Number Part Name Quan.
27 M12841G1 Bracket, Transformer
mounting 1
28 M11084-27 Screw, 10-12x1/2, Type A
(Transformer Mounting Bracket
to Lower Shell and Fuel Tank) 2
- M12834G1 Transformer Assy 1
29 M3259-4 Transformer 1
30 M14985G1 Cover Assy, Transformer 1
31 WLM-4 Lockwasher, 1/4-in. (Trans-
former to Mounting Bracket) 2
32 NPC-4C Nut, Hex, 1/4-20 (Trans-
former to Mounting Bracket) 2
33 Ml261i1 Thermostat 1
34 FHF3-3C Screw, Fil hd, No. 10-32 x 3/8 4
33 - 1000576 Grommet 1
36 M12826 Shell, Lower 1
37 M11084-27 Screw, 10-12 x 1/2, Type A
(Upper Shell to Lower Shell) 6
38 M11271-6 Nut, Tinnerman (Upper
Shell to Lower Shell) 6
39 1000576 Grommet (Photo Cell ,
leads | 2
40 M3353 Cap, Fuel Tank 1
41 M14260 Bushing (Fuel Filter to Tank) 1
42 M12820G4 Fuel Tank Assy 1
43 M13990 Plug (Fuel Tank Drain) 1
ELECTRICAL PARTS
- M9900GS1 Wire Assy, Black
(To Capacitor) 1
44 M12650-1 Capacitor 1
45 (Not Used)
46 M12651 Clamp, Capacitor 1
47 M11084-27 Screw, No. 10-12 x 1/2,
Type A (Clamp to Motor
Support) 1
48 M10813G28 Service (Extension) Cord
Assy 1
- M15823-26 Screw, Grounding, No. 10-12
x 3/8, Type B 1
49 M13942-4 Connector, Wire Nut 1
- M17881-3 Connector, Wire Nut
(5 wires) 1
50 M11143-1 Bushing, Strain Relief 1
1/68
Operation and Service Manual
Figure 11. Wheels and Handles
389
Figure 13. Burnér Head Assembly
А1468-00
~19-
Section VI
Nlustrated Parts List
WHEELS AND HANDLES
Index Part
No. Number Part Name Quan.
1 M15813-2 Handie, Front and Rear 2
2 M12345-34 Screw, Oval hd. 10-24 x 2
(Handle attaching) 8
3 NTC-3C Nut, Hex, 10-24 8
+ M12831-2 Frame, Wheel Support 1
5 M12867 Axle 1
6 M14830 Wheel 2
7 WP-8C Washer, 1/2 in. 2
8 C1-7 Cotter Pin, 1/8 x 7/8 in. 2
9 M14831 Hub Cap (Red) 2
AUTOMATIC CONTROL PARTS
Index Part
No. Number Part Name Quan.
1 NTC-1C Locknut 2
2 M13962 Tubing, Photocell 1
3 M14456Gl Photocell and Bushing Assy 1
4 M13963 Clamp, Tubing 1
5 M13961 Bracket, Photocell 1
6 М12461-2 Screw, Hex hd, 6-32 x 3/8 2
7 M10908-1 Screw, Hex hd, No. 6-32 x 1/4,
Type ng 2
8 ST2-2AC Screw, Rd hd, No. 8 x 1/4 1
9 M12461-2 Screw, No. 6-32 x 3/8 1
- Ml4892G5 Relay and Bracket Assy 1
10 M14800 Bracket, Relay 1
11 M14378G4 . Relay Assy 1
12 M14360 Circuit Breaker 1
13 M10908-14 Screw, No. 8-32 x 3/8,
Type ng 1
14 M14802 Bracket, Circuit Breaker 1
M9900G38 Wire Assy, Red, tocircuitbreaker 1
M9900G53 Wire Assy, Black, to circuit breaker 1
MI16615G1 Wire Harness Assy, to photocell 1
M13942-2 Wire Connector (Wire Nut) 3
M11271-6 Nut, Tinnerman (Relay Bracket
to Lower Shell) 1
M11084-27 Screw, 10-12 x 1/2, Type A
(Relay Bracket to Lower Shell) 1
BURNER HEAD ASSEMBLY
Index Part
No. Number Part Name Quan.
- M12947G3 Burner Assembly (See Figure 10) Ref
1 M16137 . Nozzle, Siphon (Alt: M16893) 1
2 M19659-1 Washer, Nozzle seal 2
3 M10809-1 . Spring, Nozzle seal 1
4 M8882 . Sleeve 1
5 M12951 Electrode, I. H. 1
6 М12952 Electrode, R.H. 1
7 M12948G1 Burner Head Assy (Includes
roll pins, bushings and
burner head casting) 1
8 M16712 , Bushing, Electrode (Alt:M9788) 2
9 HF3-3C . Screw, Hex hd, 10-32 x 3/8 in. 3
10 WP-3C . Washer, Flat, No. 10 1
11 M12949 . Connector, Male 1
12 M14256 Elbow, Male, 90° 1
1/68
Operation and Service Manual
MOTOR PACKAGE ASSEMBLY
Section VI
Ilustrated Parts List
Index Part Index Part
No. Number Part Name Quan. No. Number Part Name Quan.
- M16674G1 Motor Package Assembly 12 M14856 Spring (Alt: M11966-5,
(See Figure 10) used with M17709,
- *Ml6675G1 . Pump and Filter Parts Rotor; when used,
Package 1 also use Shim,
1 M16545 End Cover 1 M17484) 1
2 M12461-31 Screw, Hex hd, 10-32 x 13 M8645-3 Pump Body 1
1 in. 4 14 FHPF3-7C Screw, Fil hd, 10-32 x
3 WLI-3 Lockwasher, Internal 7/8 in. 2
No. 10 4 15 M12865 Male Elbow 1
4 *M12179 Intake Filter 1 16 M10837 Pipe Plug 1
5 *M12244 G1 Filter Assy 1 17 M10992-1 Screw, Pressure
6 *M11637 Filter, Lint 1 Adjustment 1
7 M12233 End Cover, Pump (Port 18 М10993-1 Spring, Compression 1
plate) 1 19 M8940 . . Ball, 1/4 in. dia. 1
8 M12461-34 . .Screw, Hex hd, 10-32 x 20 M12811 . Motor 1
1-1/2 in. 6 - M8608 End Shield, Motor
9 WLI-3 Lockwasher, Internal No. 10 6 (Pump-end) 1
10 M8643-3 Blade 4 - M17327 End Shield, Front
11 M13635-3 Rotor (Alt: M17709) 1 (Fan-end) 1
* Parts recommended for normal service replacement.
3738
Figure 14. Motor Package Assembly
DECALS AND TOUCH-UP PAINT
Index Part Index Part
No. Number Part Name Quan, No. Number Part Name Quan.
M12649 Decal, Operating Instructions 1 M16262 Decal, Caution 1
M12633 Decal, Trade Name 2 M13386-8 Touch-up Paint, Aerosol can,
M17083 Decal, Nameplate 1 Black
M16613 Decal, Wiring Diagram 1 M13272 Touch-up Paint, Aerosol can,
M17082 Decal, AtoMaster Deluxe 1 Lt. Gray
M16749 Decal, Automatic Safety Control 1 M13271 Touch-up Paint, Aerosol can,
Med. Gray
A1470-00 -20- 1/68
All77-01
WARRANTY
Manufacturer warrants each new Product made by Manufacturer to be free from defects in material and
workmanship, its obligation and liability under this Warranty being expressly limited to repairing or, at Manu-
facturer's option, replacing free of charge at its factory any part proving defective under normal use and service
within ninety days of operation after date of delivery to a customer as attested by Distributor. Parts claimed to
be defective and for which repair or replacement is desired shall be, if requested by Manufacturer, returned
transportation prepaid to Manufacturer's factory for inspection. THIS WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTA-
BILITY AND FITNESS FOR ANY PARTICULAR PURPOSE, AND THE OBLIGATION AND LIABILITY OF MANU-
FACTURER UNDER THIS WARRANTY SHALL NOT INCLUDE ANY TRANSPORTATION OR OTHER CHARGES OR
THE COST OF INSTALLATION OR ANY LIABILITY FOR DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES
OR DELAY RESULTING FROM THE DEFECT. Any operation beyond rated capacity or the improper use or ap-
plication of Product or the substitution upon it of parts not approved by Manufacturer or any alteration or repair
by others insuch manner as, in Manufacturer's judgment, to affect the Product materially and adversely shall void
this Warranty. No representative of Manufacturer is authorized to change this Warranty in any way, and no
attempt, effort or promise to repair Products of Manufacturer either by Manufacturer or by any representative of
Manufacturer at any time shall change or extend this Warranty in any way. This Warranty covers only new and
unused Products Manufactured by Manufacturer. Products manufactured by others are covered only by such war-
ranties as are extended to Manufacturer by its suppliers.
In accordance with our established policy of constant improvement, we reserve the right to
amend these specifications at any time without notice. THE ONLY WARRANTY APPLICABLE
IS OURSTANDARD WRITTEN WARRANTY, WE MAKE NO OTHER WARRANTY, EXPRESSED
OR IMPLIED, AND PARTICULARLY MAKE NO WARRANTY OF SUITABILITY FOR ANY
PARTICULAR PURPOSE.
Master
Division of Koehring Company
KOEHRING P. O. Box 657, Dayton, Ohio 45401
8/67