TM 55-2090-201-14&P
3-3. OPERATORS TROUBLESHOOTING PROCEDURES (Continued).
Table 3-5.
Test Procedures for Electrical and Electronic Components,
Type B Separators (Continued).
Meter
Reading
Test Procedure
(VDC)
Test Conditions
Remarks
1.
(Continued)
2. Verify the
operation of
the first
stage (prefilter)
mini-probe (5)
and the printed
circuit board:
2. Internal power
and auto controls
switch (2) are
on. Pump switch
(3) on.
Both
mini-probes (5,6)
immersed in
water.
2.
The normal opera-
tion of the mini-
probe is to trans.
mit a 24 VDC sig-
nal to open the
solenoid operated
oil discharge
valve and close
the solenoid
operated water
discharge valve
only when the
mini-probe senses
oil or air.
The
mini-probe should
be replaced if
either a signal
is generated
while the mini-
probe is in water
or a signal is
not transmitted
when the No. 1
(prefilter) oil
dump light/button
(7) does not
light when it is
depressed. A
malfunction in
the printed
14 and 17. Re-
place the lamp in
the auto controls
indicator light
(4) if a reading
of 24 VDC was
obtained, but the
indicator did not
light.
Refer to para-
graph 3-10 for
lamp replacement.
3-30
