Operating Instructions
Troubleshooting Chart - RPP50
Symptom | Possible Cause(s) | Corrective Action |
|
|
|
Pump will not start or run
1. Water level too low | 1. Pump switch will not turn on unless water covers top of |
| pump |
2. Blown fuse or tripped circuit | 2. If blown, replace with proper sized fuse or reset breaker |
breaker |
|
3. Low line voltage | 3. If voltage is under recommended minimum, check wiring |
| size from the main switch on property. If OK, contact power |
| company. |
4. Defective motor | 4. Return for service or replace motor |
5. Defective float switch | 5. Replace float switch |
6. Impeller (pump filled with | 6. If impeller will not turn, remove housing and remove debris |
debris) |
|
7. Tangled switch | 7. Arrange switch so the switch moves freely. Reposition pump |
| if necessary |
8. Insufficient liquid level | 8. Make sure liquid level is at least 13" from the basin floor |
Pump starts and stops too often
1. Backflow of water from piping | 1. Install check valve |
2. Faulty float switch | 2. Replace float switch |
3. Check valve not installed or | 3. Remove and examine check valve for proper installation |
leaking | and free operation |
4. Discharge head is less than | 4. Recheck all sizing calculations to determine proper pump |
manufacturer’s minimum | size |
Pump shuts off and turns on independently of switch (trips thermal overload protection)
1.Excessive water temperature
2.Defective switch or entangled switch is causing pump to run dry
1.Pump should not be used for water above 120°
2.Replace or reposition pump
Pump may start unexpectedly. Disconnect power supply before
servicing
3. Low line voltage | 3. If voltage is under recommended minimum, check wiring |
| size from the main switch on property. If OK, contact power |
| company |
|
|
Pump operates noisily or vibrates excessively
1.Worn bearings
2.Debris in impeller cavity or broken
3.Piping attachments to building structure too rigid or too loose
1.Replace pump
2.Remove housing, clean impeller and/or replace broken impeller
3.Replace portion of discharge pipe with flexible connector
Pump will not shut off 1. Defective float switch
2.Float switch movement restricted
3.Restricted discharge (obstruction in piping)
4.Excessive inflow or pump not properly sized for application
1.Replace float switch
2.Reposition pump or clean basin as required to provide adequate clearance for float
3.Remove pump and clean pump & piping
4.Recheck all sizing calculation to determine proper pump size
Pump operates but delivers little or no water
1.Low line voltage
2.Debris caught in impeller or discharge
3.Worn or defective pump parts or plugged impeller
4.Pump not properly sized for application
5.Check valve stuck closed or installed backwards
6.Shut off valve closed
1.If voltage is under recommended minimum, check wiring size from the main switch on property. If OK, contact power company
2.Remove, clean and check for tightness
3.Replace entire pump. Clean parts if required
4.Recheck all sizing calculations to determine proper pump size
5.Remove and examine check valve for proper installation and free operation
6.Open valve
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