TM 10-4610-310-14
OPERATOR MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TROUBLESHOOTING PROCEDURES
CHEMICAL INJECTION PUMP
GENERAL
The table lists the common malfunctions that you may find during the operation or maintenance of the
Lightweight Water Purifier (LWP) chemical injection electronic metering pump assembly or its components. 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
Check for power to the control
If power is not available see WP
1. Chemical pumps are not running
module
- pilot light is off
Replace light bulb (WP 0102 00).
Test pump light (WP 0046 00).
Notify unit maintenance
Ensure that the RO pressure is
above 160 psi. If problem persists
2. Antiscalant pump and coagulant
Check low-pressure switch
pump are not running
notify unit maintenance (WP 0096
3. Chemical pumps are not running
Inspect the speed and stroke
Adjust the speed and stroke if
- pilot light is on
settings
necessary. See WP 0010 00.
Prime chemical pumps (see the
Lost prime
following section)
4. Chemical pump is running but no
Loose or broken connections or
Repair connections and tubing (WP
flow
tubing
Inspect chemical tanks
Refill if necessary
END OF WORK PACKAGE
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