TM 10-4610-310-14
0067 00
MALFUNCTION
TEST/INSPECTION
CORRECTIVE ACTION
4. Low-pressure switch fails to
If present, proceed to the next step. If
shut down the hour meter,
With power on, measure the
not, Measure the voltage across pins A
antiscalant and hypochlorite
voltage across wire 2 and 3
and B at the control module (J7) (120
pumps.
at the HP junction box. (120
VAC). If present, replace HP module
VAC)
cable. If not troubleshoot control
module.
Ensure that the RO reject valve
If not present, check for continuities on
is opened. Measure the
wires 2 between LP junction box and LP
voltage across wire 2 and
switch, repair or replace damaged wire.
ground at the Low pressure
Otherwise, proceed to the next step.
switch. (120 VAC)
Measure the voltage across wire
If not present, replace high-pressure
5 and ground at the high
switch. Otherwise, proceed to the next
pressure switch. (120 VAC)
step.
If not present, check for continuities on
Measure the voltage across wire
wires 6 between LP junction box and LP
5 and 3 at the HP junction
switch, repair or replace damaged wire.
box. (120 VAC)
Otherwise, proceed to the next step.
Test for continuity between wire
If not present, replace HP module cable.
5 and pin D at the other end
Otherwise, troubleshoot control module.
of the HP module cable
END OF WORK PACKAGE
0067 00-2
