TM 9-6115-669-13&P
Visually inspect time relay for discoloration due to heat.
a.
Connect DC power supply to terminal Al (+) and A2 (-) on time relay.
b.
Set multimeter for continuity testing, and connect to terminals 15 and 16 of time relay K14 (8)
to check relay contact.
c.
Check time relay function as follows (time relay wipes with a response delay):
(1) Preset time t, begins when voltage U = +24 VDC is applied.
(2) When t1 has elapsed, relay contact R switches to on position for preset time to. Then the
contact resets to the off position (see time diagram).
(3) Cut off voltage U = +24 VDC before t1 or t2 has elapsed. The relay contact will
immediately switch back into the off position.
(4) Use a stop watch with second hand to check the length of tl and t2 Times t1 and t2 must
each be 0.5 second.
NOTE
If necessary, extend time setting for inspection purposes (e.g. 10 second
code).
a.
Hook time relay K14 (8) into the mounting bar and push on.
b.
Install cables to time relay K14 (8).
NOTE
Make sure that jumpers (6, 6) are connected, and time settings are
correct.
c.
Connect jumpers (5, 6) and cables, and set timing codes tl = 1 sec and t2 = 1 sec. Set switching
time to 5 (= 0.5 sec delay) with t1 potentiometer, and to 5 (= 0.5 sec delay) with t2
potentiometer.
d. Remove stanchion.
e.
Stow prop (2), close access door (3) and secure.
f.
Install stanchion by PDU (1).
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