TM 5-6115-275-14
NAVFAC P-8-615-14
TO 35C2-3-452-1
(3)
Relays. Test for some degree of continuity.
Normal condition shown may
indicate some normal resistance
through
relay
fields
where
indicated.
(a)
With no external load applied to
any relay field, test from terminal
1 to 3 for continuity. This tests K2
contact closed through the field of
K4. To test the closed contact of
K1, check for continuity between
terminals 4 and 7. An open circuit
indication
on
the
multimeter
between terminals 3 and 8 tests
both
open
contacts
of
K4,
between terminals 6 and 10 tests
the open contact of K 1, between
5 and 9 the open contact of K2.
and between 7 and 9 the open
contact of K 1 through the field of
K2.
(b)
Connect external 24-28 vdc load
to terminals 2 and 3.
CAUTION
that resistance measurements are not made in
circuits that have current flowing in
them. The meter will be seriously
damaged.
Test from terminals 6 to 5. An open circuit indication
tests the open contact of K3
through the field of K1 and also
test action of relay K3.
(c)
Disconnect
24-28
vdc
from
terminals and 3. Connect 24-28
vdc loads to terminals 1 and 3.
Test from terminal 3 to 8 for continuity. This tests
both K4 contacts as closed and the action of relay K4.
(d)
Disconnect
24-28
vdc
from
terminals 1 and 3 and connect it
to terminals 5 and 6. Test from
terminals 4 to 7 for an open circuit
indication. This tests the closed
contact of K3, and the action of
K1. Check between terminals 9
and 7 for continuity to test the
closed contact of K 1 through the
field of K2. Check between
terminals 6 and 10 for continuity.
This tests the closed contact of
K1.
4-44.
Remove Control Terminal Board (Model
MEP-018A)
a.
Removal. Refer to figure 4-69 and remove
the remote control terminal board.
Figure 4-69. Remote control terminal board, removal and installation (Model MEP-018A).
Change 8 4-80
