TM 10-4610-310-14
UNIT MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TROUBLESHOOTING PROCEDURES
ULTRAFILTRATION MODULE
MODULE CABLE
General
The table lists the common malfunctions that you may find due to faults in the module cable of the ultrafiltration
module. You should perform the tests/inspections and corrective actions in the order listed.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a
malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
MALFUNCTION
TEST / INSPECTION
CORRECTIVE ACTION
Inspect ground connection inside
the UF junction box for loose
Tighten any loose connections.
1. No power
connection. Inspect all the wire and
cable connections for looseness.
Measure continuity from pin A to
Replace cable if continuity is not
wire 2 and pin B to wire 4.
present.
2. Level Switch Malfunction
When the level is full, 120 VAC
Troubleshoot low-level switch. WP
should be present across wire 4
and 3.
Measure continuity from pin C to
Replace cable if continuity is not
3. Solenoid Valve V2A malfunction
wire 30 and pin J to wire 3.
present.
Measure continuity from pin E to
Replace cable if continuity is not
4. Solenoid Valve V2B malfunction
wire 32 and pin J to wire 3.
present.
Measure continuity from pin G to
Replace cable if continuity is not
5. Solenoid Valve V2C malfunction
wire 34 and pin J to wire 3.
present.
Measure continuity from pin D to
Replace cable if continuity is not
6. Solenoid Valve V3A malfunction
wire 31 and pin J to wire 3.
present.
Measure continuity from pin F to
Replace cable if continuity is not
7. Solenoid Valve V3B malfunction
wire 33 and pin J to wire 3.
present.
Measure continuity from pin H to
Replace cable if continuity is not
8. Solenoid Valve V3C malfunction
wire 35 and pin J to wire 3.
present.
Measure continuity from pin I to
Replace cable if continuity is not
9. Solenoid Valve V7 malfunction
wire 36 and pin J to wire 3.
present.
END OF WORK PACKAGE
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