TM 10-4610-310-14
UNIT MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TROUBLESHOOTING PROCEDURES
RAW WATER SERVICE PUMP
GENERAL
This work package lists the common electrical malfunctions that you may find during the operation or
maintenance of the raw water pump P1 or its components used in the Lightweight Water Purifier (LWP). You
should perform the electrical measurements in the order listed.
WARNING
When checking for voltage on an energized component, extreme care must be taken. Only qualified and
authorized electrician should maintain, troubleshoot, and operate energized equipment. Injury or death to
personnel may result.
CORRECTIVE
MALFUNCTION
TEST/INSPECTION
ACTION
If power is not
Check for power to the control
available (WP 0030
module
Replace light bulb WP
1. Pump light is not coming on at the control
Test pump light (WP 0046 00).
panel
Inspect and reset the motor starter
Replace motor starter
module and overload screw (WP
module if faulty (WP
Disassemble and inspect the pump
Remove the debris
for debris. (WP 0111 00)
Inspect current and
Ensure that the generator is
voltage outputs (TM 9-
working properly
6115-639-13)
Unplug the cable on both ends and
inspect for continuity between both
Replace cable if faulty
ends on all the pins
(A, B, C)
Tighten loose
2. Pump light is on but pump is not operating
With power on, inspect the
connection. Replace or
connection J2 for voltage across
repair broken wires
pin A and B (120 VAC)
and connections.
Disconnect the pump cable at the
Replace if voltage is
pump and turn the power on,
present at the input
check for voltage across pin A and
and not at the output
B (120 VAC)
Inspect the pump electrical
Replace if faulty (WP
receptacle assembly for loose
wires and damage
0078 00-1
