ARMY TM 9-6115-60412
NAVY NAVFAC P-8-633-12
Figure 4-77. Test Data for OPERATION SELECTOR SWITCH S3
(3)
Meter should indicate. Infinity at all blank contacts in the chart.
(4)
Replace switch if it falls to meet these specifications.
b.
Remove. See Figure 4-68.
(1)
Set MAINTENANCE LOCKOUT switch S100 to MAINTENANCE
(2)
Tag and disconnect all wiring to switch (2) contacts.
(3)
Remove screw in center of handle and slide off handle.
(4)
Remove two screws from face of mounting plate on front of panel.
c.
Install.
(1)
Install OPERATION SELECTOR SWITCH S3 (2) by positioning switch sections at rear of panel and
assemble the mounting plate from the front. Secure the assembly with two screws.
(2)
Slide on handle and secure with the attaching screw.
(3)
Connect wires as tagged and discard tags.
(4)
Set MAINTENANCE LOCKOUT switch S100 to OPERATE.
4-135. HUMIDISTAT S107 (1, Figure 2-12). Humidistat S107 senses humidity inside cabinet C and controls
switchgear heaters to prevent formation of condensation inside cabinets A, B, and C.
a.
Test.
Dangerous voltage levels may be present at components located within cabinet C.
Observe all applicable safety precautions as outlined in Chapter 1, Section III, of
this manual.
(1)
Set MAINTENANCE LOCKOUT switch S1090 to MAINTENANCE.
(2)
Tag and disconnect wiring from humidistat S107.
4-195
