TM 9-4940-566-14&P
5 TROUBLE SHOOTING
5.1 WATER SYSTEM
POSSIBLE CAUSE
SYSTEM
Water source to unit off.
a.
5.1.1 Pump Operates.
Water not connected to unit.
b.
Water does not flow
Float tank inlet valve stuck or clogged.
from cleaning gun.
Float tank outlet strainer clogged.
d.
Y strainer clogged.
e.
Float tank shut-off valve closed.
f.
Pump inlet check valve(s) stuck or
g.
defective.
h.
Nozzle control valve not open.
i.
Blocked tip in cleaning gun.
Unloader valve stuck in by-pass MODE.
j.
Pump drive belt loose or missing.
k.
Pump outlet check valves stuck open.
l.
m.
Coil outlet relief valve leaking.
Float tank outlet strainer clogged.
a.
5.1.2 Pump Operates, low
Water not connected to unit.
b.
water flow.
c.
One inlet and/or one outlet check valve
stuck open or closed.
Pump drive belt loose or missing.
d.
e.
Blocked tip in cleaning gun.
f.
60 Hz pulley on unit operating on 50 Hz.
Coil outlet relief valve leaking.
g.
h.
Air leak in suction lines.
i.
Cleaning solution valve open;
solution tank empty.
Valve has dirt on seat.
5.1.2.1 Coil outlet relief
a.
b.
Valve not adjusted properly.
valve leaks (drips).
c.
Gun tip clogged
5.2
FUEL SYSTEM
a.
No fuel in tank.
5.2.1 Burner does not
Fuel Shut-off valve (on filter) OFF.
ignite (no fuel) (ref. also b.
to 5.4.3, 5.4.0.1).
d.
Soap/water in fuel tank.
e.
Burner jet clogged.
f.
Burner switch OFF.
Fuel pump drive coupling broken
g.
(fuel pump not turning).
h.
Jack Shaft drive belt loose.
i.
Fuel line from tank plugged or kinked.
j.
k.
Fuel line to burner kinked or plugged.
l.
Fuel pump is air locked.
Pillow block or blocks seized up.
m.
19