Tuthill H Serie Manuel D'installation Et D'utilisation page 13

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Troubleshooting
(continued)
Symptom Cause
Suction line problem
Bypass valve open
Vanes sticking
Pump won't prime
Excessive rotor or vane wear
Automatic nozzle
System blockages
Excessive dirt in screen
Suction line problems
Bypass valve sticking
Outlet blocked
Vanes sticking
Low capacity
Excessive rotor or vane wear
Hose or nozzle damage
Plugged filter
Low fluid level
Incorrect voltage
Vanes sticking
Pump runs slowly
Wiring problem
Motor problem
Bypass valve sticking
Motor stalls, fuse blows,
Low voltage
thermal protector trips
Excessive rotor or vane wear
repeatedly
Debris in pump cavity
Transferring high viscosity fluids
Clogged screen
Motor overheats Restricted suction pipe
Motor failure
Pump rotor lock-up
No power
Wiring issue
Motor failure
Motor inoperable
Locked rotor
Incorrect/loose wiring
Bad O-ring gasket
Dirty/bad shaft seal
Fluid leakage
Incompatible fluid
Loose fasteners
Motor failure
Pump hums but will
not operate
Broken rotor key
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H-SERIES FUEL TRANSFER PUMPS
Cure
Check for leaks or restrictions in suction line
Remove and inspect valve; must move freely and be free of debris
Check vanes and rotor slots for nicks, burrs, and wear
Inspect rotor and vanes for excessive wear or damage; replace if necessary
Remove to prime pump
Check filter and bypass valve for debris; remove nozzle and test flow with pump ON
Remove and clean screen
Check for leaks or restrictions in suction line
Remove and inspect valve; must move freely and be free of debris
Check pump outlet hose, nozzle, and filter for blockage
Check vanes and rotor slots for wear; replace if necessary
Inspect rotor and vanes for excessive wear or damage; replace if necessary
Replace hose or nozzle (Tuthill recommends UL-rated hoses and nozzles)
Replace filter
Fill tank
Check incoming supply line voltage
Inspect vanes and rotor slots for nicks, burrs, and wear
Check for loose connections
Contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT)
Remove and inspect valve; must move freely and be free of debris
Check incoming supply line voltage
Check rotor and vanes for excessive wear or damage
Clean debris from pump cavity
These fluids can only be pumped for short periods of time (less than 30 minute duty cycle)
Remove inlet and clean screen
Remove and clean pipe
Contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT)
Clean and check pump rotor and vanes
Check incoming supply line power
Use multimeter to isolate issue with supply line power
Contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT)
Clean and check pump rotor; repair as needed with KIT120RG
Verify correct wire size with local, state, and national electric codes
Check and replace all O-ring gaskets (Rotor Cover / Inlet Flange / Bypass Cap)
Replace shaft seal with KIT120SL
Refer wetted parts list on Page 14 to the fluid manufacturer
Tighten fasteners
Contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT)
Remove all debris and replace key
INSTALLATION AND OPERATION MANUAL
13