TM 9-6115-604-34
NAVFAC P-8-633-34
b.
Inspect.
(1)
Inspect for evidence of burning or insulation breakdown.
(2)
Examine contacts for evidence of arcing, pitting, or burning.
c.
Test.
(1)
Connect a multimeter across relay terminals A3 and A4.
(2)
Observe that multimeter reads less than 1 ohm.
(3)
Connect a 24 V dc power supply across relay terminals X1 (positive) and X2 (negative).
(4)
Observe that multimeter reads infinite ohms.
(5)
Connect multimeter across relay terminals Al and A2.
(6)
Observe that multimeter reads less than 1 ohm.
(7)
Disconnect 24 V dc power supply.
(8)
Observe that multimeter reads infinite ohms.
(9)
Repeat steps (1) through (8), above, several times to ensure that relay works consistently.
(10)
If multimeter does not indicate required readings, relay is defective and should be replaced.
d.
Install.
(1)
Install relay K30 (52, Figure 5-9) and secure with screw and captive washer assemblies (53).
(2)
Make required wire connections to relay terminals and remove tags.
5-31. EMERGENCY LIGHT RELAY K100 (56, Figure 5-9). This relay will deactuate to apply battery voltage to the
emergency lights upon failure of station power.
a.
Inspect.
(1)
Remove screws to remove cover.
(2)
Inspect mounting hardware and electrical connections for security.
(3)
Inspect for evidence of burning or insulation breakdown.
(4)
Examine contacts for evidence of arcing, pitting, or burning.
b.
Remove.
(1)
Tag and disconnect wires from all four terminals.
(2)
Remove relay cover by removing screws.
(3)
Remove emergency light relay K1OO (56) by removing three screw and captive washer assemblies (57).
c.
Test.
(1)
Connect a multimeter across the normally closed contact terminals. These are located at each side of
emergency light relay K100.
(2)
Multimeter should read less than 1 ohm.
WARNING
Failure to exercise caution when using energized test equipment may result in Injury to
personnel.
(3)
Connect a 120 V ac power supply to the coil terminals. These are located at the comers of emergency
light relay K100.
(4)
Multimeter should read infinite ohms.
(5)
Repeat steps (1) through (4), above, several times to ensure that power relay K100 works consistently.
5-68
