Troubleshooting - Graco President B Series Instructions And Parts List

WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
Problem
Excess material leaks from the weep
holes in the base of the motor.
Pump doesn't build pressure.
Pump is clogged.
Motor leaks air or stops
WARNING
This pump is specially designed with non-sparking
construction. Interchange of any part for repair or
improvement of the pump, including the air motor,
must be with identical parts bearing the same part
numbers given on pages 13–15. To reduce the risk
of a fire or explosion and serious injury, the use of
any other parts is prohibited.

Troubleshooting

Before servicing this equipment always make sure to
Relieve the Pressure.
Check all possible problems and solutions before
disassembling the pump.
Cause
Worn throat packings
Worn piston and/or throat packings
Material has dried in the pump
Material is too dry
Pump and hose not flushed with water
before pumping grout
Lack of lubrication
Solution
Flush the weep holes when flushing
the pump. Replace the throat pack-
ings.
Replace the packings.
Flush pump more frequently; replace
packings as needed.
Add water.
Wet hose and pump with water before
pumping grout. See page 7.
Rebuild motor, and inject oil into air in-
let daily.
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