TM 10-3510-220-24
Table 2-2. Unit Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
34. WASHER FILL LEVEL IS TOO LOW.
Step 1.
Check for obstruction in air trap (located between drain valves), clean as required.
If level is incorrect, remove cover of control console and adjust center screw
on low water switch.
WARNING
High voltage is present inside control console. Do not perform
maintenance with power on. Death or serious injury may result.
Step 2.
Check for inoperative water level switch with power off and clear tube to air trap
disconnected from air trap, perform continuity check from common to normally closed.
Then blow into end of tube and while holding pressure in tube check continuity for
common to normally open.
NOTE
All three level switches are removed and replaced the same way. This
procedure covers replacement of one switch.
a.
If switch is defective, replace level switch.
(1)
Tag and remove wires from level switch.
(2)
Remove screw holding level switch to mounting bracket.
(3)
Remove tube attached to bottom of switch.
(4)
Connect tube to bottom of switch.
(5)
Position switch and attach to mounting bracket.
(6)
Connect wiring and remove tags.
(7)
Install control console cover.
b.
If switch is serviceable, proceed to next step.
Step 3.
Check for clogged drain valve during filling and check for low air pressure (60 to 80
psi [414 to 552 kpa]).
a.
If drain valve is clogged, remove clog.
b .
If air supply is correct (malfunction 32 above) replace or repair drain valve.
c.
If problem still persists, notify your supervisor.
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