TM 9-4110-256-14
4-28. TOGGLE SWITCH S1 TESTING AND REPLACEMENT.
Equipment Conditions:
General Safety Instructions:
disconnected.
WARNING
Control panel cover open.
High voltage and exposed rotating parts are used in
the refrigeration unit. Personal injury can result if
Materials/Parts:
power is connected.
Lock Washers (2)
Marker tags (2)
(1)
Be sure power has been disconnected at the source and remove two bolts (1) and lock washers (2). Open
control box cover (3). Discard lock washers.
(2)
Using multimeter set to measure continuity, check toggle switch (4) continuity between terminals 2 to 3
with toggle switch in both START/RUN and OFF position. Continuity should be indicated only when
toggle switch (4) is in the START/RUN position. If continuity was indicated in the OFF position or if no
continuity was indicated in the START/RUN position, replace toggle switch (4).
(3)
If no failure was indicated, close control box cover (3) and install two new lock washers (2) and bolts (1).
b. Removal.
(1)
Be sure power has been disconnected at the source and remove two bolts (1) and lock washers (2). Open
control box cover (3). Discard lock washers.
NOTE
Terminal and mounting hardware is supplied with toggle switch.
(2)
Tag wire leads (5) and remove two screws (6), lock washers (7), and wire leads.
(3)
Remove nut (8), lock washer (9), retainer (10), and toggle switch (4).
4-56