TM
55-1730-229-12
AG
320A0-OMM-000
TO
35C2-3-473-1
TM
1730-12/1
Table 4-2.
Organizational Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
(continued)
91.
f.
Reconnect wires to thermocouple.
INLET FILTER BLOCKED SWITCH MALFUNCTION.
92.
If an inlet filter blocked switch malfunction is suspected, test the switch
and wiring as follows:
a.
Disconnect battery, and remove roof (paragraph 4-16).
b.
Open bypass door (9, figure 4-32) and check that switch
actuates (indicated by click) when door is open (at bottom)
between 1/4 and 1/2 inch. If switch actuates normally, go to
step d. If switch does not actuate normally, adjust per step c.
c.
If necessary adjust switch. To adjust, loosen nuts (1),
slide switch (6) up or down on bracket (7), and tighten nuts.
Move switch down if actuation occurs when bypass door opening
is less than 1/4 inch. Move switch up if actuation occurs
when bypass door opening is greater than 1/2 inch.
d.
Connect battery and turn MASTER SWITCH on.
Verify that INLET FILTER BLOCKED indicator light on control
e.
panel is off when bypass door is closed. If light is off, go
on to step g. If light is lit do step f.
f.
Set MASTER SWITCH off and disconnect battery. Disconnect one
wire from switch (6), and check for open circuit between
switch outer terminals. If continuity exists between switch
outer terminals, replace switch (paragraph 4-44). and
perform operational check.
Open bypass door (9) to actuate
switch and have assistant
g.
check that INLET FILTER BLOCKED
indicator light is lit. If
light is lit, switch and wiring
is good (turn MASTER SWITCH
to off and disconnect battery).
If light is not lit, con-
tinue with next step.
h.
Actuate PRESS TO TEST switch on control panel (MASTER SWITCH
on). If INLET FILTER BLOCKED indicator does not light, refer
to malfunction 6 or 7. If light does light during lamp test,
do step i.
