TM 10-4610-239-10
TM 08580B-10/1
Table 3-2. Troubleshooting (ROWPU) (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. If pump is operating, check indicator lamp to see if bulb is burned out.
a. Replace defective bulb using lamp puller (para. 3-10).
b. If bulb is not defective, notify unit maintenance.
2.
RAW WATER FLOW INDICATOR DROPS TO NEAR ZERO; BOTH RAW WATER PUMP BLUE LAMPS ARE ON.
Step 1. 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) 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 from cycle.
Step 2.
Check for loose hose connections or damaged hose sections.
a. Tighten loose connections.
b. Replace damaged hose sections.
Step 3
Check to see if input strainer is completely under water
a. Lengthen strainer rope.
b. Move intake to deeper water.
Step 4. 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.
3.
CARTRIDGE FILTER GAGE RISES ABOVE 20 PSID.
Step 1. Make a turbidity tube check (para.2-24p) of water taken from DRAIN NO. 1 CARTRIDGE FILTER valve (Fig2-
41).
3-5
