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INSTALLATION AND OPERATION MANUAL
Troubleshooting (continued)
Bold text indicates repairs that are not serviceable by the owner; please refer to our warranty policy on page 2 for further instructions.
* Repairs marked with an asterisk (*) will require Repair Kit #700KTF2689. This kit includes a replacement rotor and new vanes, as well as a number of other important seals and
components to complete the repair. Details of this kit are on page 10.
Symptom Cause Solution
Fluid leakage
1. Bad o-ring gasket Check all o-ring gaskets
2. Dirty shaft seal Clean seal & seal cavity
3. Bad shaft seal Replace seal
4. Incompatible fluid Refer wetted parts list to fluid manufacturer
5. Loose fasteners Tighten fasteners
Pump won't prime
1. Suction line problem Check for leaks in suction line
2. Bypass valve open Remove and inspect valve, must move freely & be free of debris
3. Vanes sticking Check vanes and slots for nicks, burrs and wear *
4. Excessive rotor or vane wear Inspect rotor & vanes for excessive wear or damage, replace if necessary *
5. Outlet blocked Check pump outlet, hose, nozzle & filter for blockage
6. Vapor Lock Reduce vertical and horizontal distance from pump to liquid; Remove the automatic nozzle
Low capacity
1. Excessive dirt in screen Remove and clean screen
2. Suction line problem Check suction line for leaks or restrictions; it may be too small, too long or not airtight
3. Bypass valve sticking Remove and inspect valve; must move freely & be free of debris
4. Vanes sticking Check vanes and slots of wear
5. Excessive rotor or vane wear Inspect rotor & vanes for excessive wear or damage; replace if necessary *
6. Hose or nozzle damage Replace hose or nozzle
7. Plugged filter Replace filter
8. Low fluid level Fill tank
Pump runs slowly
1. Incorrect voltage Check incoming line voltage while pump is running
2. Vanes sticking Inspect vanes and slots for nicks, burrs and wear
3. Wiring problem Check for loose connections
4. Motor problem Refer to warranty policy
Motor stalls
1. Bypass valve sticking Remove and inspect valve, must move freely & be free of debris
2. Low voltage Check incoming line voltage while pump is running
3. Excessive rotor or vane wear Check rotor & vanes for excessive wear or damage *
4. Debris in pump cavity Clean debris from pump cavity
Motor overheats
1. Pumping high viscosity fluids These fluids can only be pumped for short periods of time (less than 30 minutes duty cycle)
2. Clogged screen Remove and clean screen
3. Restricted suction pipe Remove and clean pipe
4. Motor failure Refer to warranty policy
5. Pump rotor lock-up Clean and check pump rotor and vanes
Motor inoperative
1. No Power Check incoming power
2. Switch failure Refer to warranty policy
3. Motor failure Refer to warranty policy
4. Thermal protector failure Refer to warranty policy
5. Incorrect/loose wiring Check wiring
Pump hums but will not
operate
1. Dirt in pump cavity Clean out pump cavity
2. Motor failure Refer to warranty policy
3. Broken key Remove all debris & replace insert
4. Low voltage Check incoming line voltage while pump is on
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