Nova-Tech LMI Series HH Metering Pump - Manual (Page 38)

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PROBLEM POSSIBLE CAUSE
Pump Will Not Prime 1. Pump not turned on or plugged in.
2. Output dials not set properly.
3. Pump suction not flooded.
4. Air trap in suction piping.
5. Too much pressure at discharge.
Pump Loses Prime 1. Solution container ran dry.
2. Pump suction not flooded.
3. Air trap in suction piping.
14.0 Troubleshooting
SOLUTION
1. Turn on pump/plug in pump.
2. Always prime pump with speed at 80% and stroke at 100%.
3. The HH pump requires a flooded suction. Reposition the pump
accordingly.
4. Be sure the suction piping is installed so that there are no air traps
(see section 6.2).
5. Depressurize discharge piping and verify that system pressure is
within the operating pressure of your pump.
1. Refill container with solution and reprime (see Section 6.0).
2. The HH pump requires a flooded suction. Reposition the pump
accordingly.
3. Be sure the suction piping is installed so that there are no air traps
(see section 6.2).