Table 3-1. Operator Troubleshooting Guide (Continued).
TEST OR INSPECTION
Step 5. Check raw water pump.
Refer to raw water pump troubleshooting malfunction no. 14.
Step 6. Notify unit maintenance.
10 Booster pump is started in clean mode, but pressure is not observed at the cartridge filter pressure gage
Step 7. Check clean/flush tank.
Make sure tank is full and the clean flush outlet valve is open.
Step 2. Check manual valve positions.
Refer to para. 2-19.
Step 3. Check automatic valve positions.
Refer to automatic valve troubleshooting.
Step 4. Check cartridge filters.
If plugged, change filters.
Step 5. Check booster pump.
Use hand to feel that air is moving out of the pump enclosure.
If pump is not running refer to malfunctions 1 thru 3 above.
Step 6. Check for plugged basket strainer.
Step 7. Notify unit maintenance.
11. Booster pump does not stop when clean flush tank is empty.
Step 1. Press booster pump stop pushbutton.
Notify unit maintenance to check level switch in clean flush tank for sticking or operational problem
and to check low feed pressure switch for operation.
Operation can continue by manually starting and stopping the booster pump and high pressure
pump during system clean operations.
12. Booster pump does not stop when there is no feed water to the ROWPU.
This situation can occur if the forward flush valve is open. Close forward flush valve to check if
problem is still occurring.
Step 1. Notify unit maintenance to check feed low pressure switch.
1. Strainer plugs frequently with sand.
Step 1. Check separators.
Clean out separator waste water hoses.
Step 2. Check separator waste water flow (on Model WTA-060 normal flow is 1-2 gpm (3.7-7.6 Ipm) and on Model
ROWPU-1 normal flow is 14-15 gpm (51.8-55.5 Ipm) with high pressure pump running).
If there is little or no flow from the separator waste hoses, remove hoses and continue operation.
If there is still no flow from the separator waste hoses, check the pump height above water, van
height above the pump, and distance from pump to van. Reposition equipment if not within limits.
If the above steps do not clear the problem, notify unit maintenance to test raw water pump.
Site improvement per FM10-52 may be required to reduce sand input to equipment.
3-8 Change 7