TM 08580 A-10/1
Table 3-2. Troubleshooting (ROWPU) (continued)
TEST OR INSPECTION
If pump is operating, check indicator lamp to see if bulb is burned out.
a. Replace defective bulb using lamp puller (para. 310).
b. If bulb is not defective, notify unit maintenance.
RAW WATER FLOW INDICATOR DROPS TO NEAR ZERO; BOTH RAW WATER PUMP
GREEN LAMPS ARE ON.
Check to see that both raw water pumps are operating. Listen to motor and rest hand lightly
on motor casing to feel for vibration.
a. If pump is not operating, check and reset circuit breaker (fig. 2-4, sheet 3 of 3) and
then immediately attempt to restart. Do so only one time.
b. If pump fails to start, notify unit maintenance and remove defective raw water pump
Check for loose hose connections or damaged hose sections.
a. Tighten loose connections.
b. Replace damaged hose sections.
Check to see if input strainer is completely under water.
a. Lengthen strainer rope.
b. Move intake to deeper water.
Check to see if input strainer is clogged.
a. Clean debris from input strainer.
b. Shorten strainer rope so it does not rest on bottom of raw water source.
c. Make sure raw water pump is sufficiently close to raw water source.
CARTRIDGE FILTER GAGE RISES ABOVE 20 PSID.
Make a turbidity tube check (para. 224p) of water taken from DRAIN NO. 1 CARTRIDGE
FILTER valve (Fig. 2-39).
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