Troubleshooting - Graco Lube Master Instructions Manual

Troubleshooting

Troubleshooting
Problem
No lubrication is dispensed from pump,
but pump is rotating
Pump is Not Running or Requires Ser-
vice
No lubrication is dispensed from pump
and drive shaft is not rotating
Motor is Not Running
No Gear Reducer Output
14
1. Follow Pressure Relief Procedure, page 13,
2. Check all possible problems and causes before
Cause
Reservoir is empty
Check valve is defective
Adjustment sleeve seals are defective
Problem is in the pump
Yoke connector pin and piston are
defective
Sheared drive motor key
Broken pump drive shaft
Piston is not engaged in sleeve
Motor is not running
No gear reducer output
Defective pump input shaft
Power is off
Electric connections to motor or timer
are loose
Timer/controller is set incorrectly or
defective
Key is sheared or missing at coupling
Defective gearbox
before checking or repairing the pump.
disassembling the pump, including loose
connections or air trapped in the system.
Refill as required. See Filling The Res-
ervoir, page 9.
Clean and install seal repair kit.
See Pump is Not Running or Requires
Servicing section of this Troubleshoot-
ing Table.
Replace defective parts using Pump
Drive Repair Kit.
Replace key.
Replace defective parts using Pump
Drive Repair Kit.
Replace defective parts using Output
Manifold Kit.
Refer to Motor is Not Running section
of this Troubleshooting Table.
Refer to No Gear Reducer Output sec-
tion of this Troubleshooting Table.
Replace defective parts using Pump
Drive Repair Kit.
Turn power on.
Check all connections and tighten
securely.
Set timer/controller to correct setting. If
unit is still not functioning, repair or
replace timer/controller.
Replace key.
Gearbox must be replaced. For this
repair unit must be returned to an
authorized Graco repair facility.
Solution
3A2781B