Troubleshooting - SKF LINCOLN FlowMaster II 85712 Instructions D'utilisation Et Maintenance

Troubleshooting

Condition
Pump does not operate
Pump runs excessively
Pump speeds up or runs erratically
Pump runs, but output is low
Lubricant leaking from safety
unloader valve
Possible cause
No electric power to pump
• Motor relay failure
• Motor overheated
• Motor tripped out on locked rotor protection
• Broken gearset or shaft
• Blown fuse
Pump motor polarity is reversed
Pump tube malfunction
Outlet check damage or contamination
Vent valve damage or contamination
System component leaking
Injector bypassing
Low level of grease or reservoir is empty
Follower plate is stuck and separated from grease
Pump piston or checks are worn
Motor speed control set too low
Faulty inlet or discharge check valve in pump
Pressure of system set too high
Safety unloader damaged or contaminated
Corrective action
Turn on or connect hydraulic supply to pump
Replace relay
Turn power off for 10 minutes and restart
Remove high pressure or repair cause of locked pump
Repair gearbox
Replace fuse, check for cause of overload
Check red motor lead is wired to positive side of circuit
Refer to manual 404517
Repair check or remove contamination
Repair vent valve or remove contamination
Repair leaks
Repair injectors
Refill reservoir
Check follower plate and reservoir for damage
Refer to manual 404517
Turn screw to speed up motor Refer to manual 404517
Replace faulty components Refer to manual 404517
Adjust pressure switch setting
Replace safety unloader
15