TM 9-4940-556-14&P
POSSIBLE CAUSE
SYSTEM (continued)
Soap/water in fuel tank.
a.
5.2.2 Burner does not
Fuel pressure not properly adjusted.
b.
ignite (fuel flows) (ref.
Air baffle not properly adjusted.
c.
also to 5.4.3, 5.4.0.1)
Incorrect electrode gap.
d.
e.
electrode.
f.
Ground wire not connected.
Electrode cracked or damaged.
g.
Fuel burner spray not contacting
h.
electrode.
TROUBLE SHOOTING - ELECTRICAL SYSTEM
5.4
No fuel (ref. to 5.4.1 and 5.4.1.5)
a.
5.4.0.1 Burner does not
b.
light (also ref. to 5.2.1)
Pump switch OFF.
Motor overload button kicked out.
d.
Pump binding.
e.
Defective motor.
f.
Improper voltage.
g.
h.
a.
5.4.0.3 Improper water
Dirt plugging orifice.
defective.
volume on STEAM or PRESSURE
MODE switch (S-4) defective or in
b.
MODE.
wrong position.
a.
5.4.0.4 Improper fuel
defective.
pressure on STEAM or
Burner switch (S-4) stuck or in the
b.
PRESSURE MODE.
wrong position.
Wire disconnected.
a.
5.4.0.5 Hour meter does
Main power and pump switch not on.
b.
work.
Meter defective.
c.
a.
Unit improperly grounded.
5.4.0.6 Chassis electrically
Frayed current carrying conductor
b.
"HOT".
touching chassis.
Improper connection to power source.
c.
Unit (or gun) in contact with live
d.
electrical power source.
5.4.1 If the fuel does not flow when switch is turned on, the following
procedure should be followed to isolate possible component failure.
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