Minuteman E24 - 18. Testing the Main Power Relay

18. Testing the Main Power Relay
B-
FBtt
Di
g
i
ta
l V
o
l
t
M
ete
r
F
rom
B
a
tt
er
y
B+
From Battery
25 Volts
gta ot ete
B-
Controlled
25
Volts
Controlled
Note: Measure the voltage across the
B+
Controlled
Note:
Measure
the
voltage
across
the
B+ and the B- coil terminals with the
wires attached and the key switch
turned on. It should be about 24 volts.
If
t
ibl l b tt diti
If
no
t
, poss
ibl
e
l
ow
b
a
tt
ery con
diti
on.
Inspect batteries.
Diode
63