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Troubleshooting Pumps Essay

990 words - 4 pages

Troubleshooting Checklist for Pumps and Control Panels
|Pump will not start. |No power to motor. |Check for blown fuse or open circuit breaker. |
| |Selector switch may be off. |Turn to "On" position. |
| |Control circuit breaker may be tripped. |Reset the circuit breaker. ...view middle of the document...

|Pump runs but will not shut down. |Pump may be air-locked. |Turn pump off for several minutes, and then restart. |
| |Lower level switch may be locked in closed |Check to ensure level control is free. |
| |position. |Switch to the "auto" position. |
| |Selector switch may be locked in the "hand" | |
| |position. | |
|Pump does not deliver proper capacity. |Discharge gate valve may be partially clogged. |Open and unclog valve. |
| |Check valve may be partially clogged. |Valve must be cleared. If there is an outside level, |
| |Discharge line may be clogged. |move it up and down. |
| |Pump may be running in the wrong direction. |Use a sewer cleaner or high-pressure hose to clear the |
| |Discharge head may be too high. |obstruction. |
| | |Low-speed pumps can operate in reverse direction with |
| | |little noise or vibration. Correct rotation must be |
| | |established by viewing the impeller. |
| | |Check total head with gauge when pump is operating; |
| | |compare against original design and previous operating |
| | |methods. If the pump has been in service for some time|
| | |and capacity falls off, remove the pump and check for |
| | |wear or a clogged impeller. |
|Motor stops and then restarts after a short |Heat sensors in the motor may be tripped due to |Impeller may be partially clogged resulting in |
|period, but overload heaters in...

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