10
309668
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 9.
1.
Relieve the pressure
before checking or servicing
the equipment.
2. Check all possible problems and causes before
disassembling the pump.
PROBLEM
CAUSE
SOLUTION
The pump will not cycle, or cycles
once and stops.
The air valve is stuck or dirty.
Turn the reset shaft (21).
Disassemble and clean the air
valve. See pages 15, 16.
Use filtered air.
The detent link (22) is worn or
broken.
Replace the detent link (22) and ball
(8). See pages 15, 16.
The springs (3, 6) and/or valve cup
(5) and plate (13) are broken or
damaged.
Replace these parts.
See pages 15, 16.
The pump cycles at stall or fails to
hold pressure at stall.
The check valves or o-rings (108)
are leaking.
Replace these parts.
See page 18.
The check balls (301) or seat (201)
are worn.
Replace these parts.
See page 18.
The check ball (301) is wedged in
the seat (201).
Replace the ball.
See page 18.
There is excessive air leakage from
the exhaust port.
The air valve cup (5) or plate (13) is
worn.
Replace these parts.
See pages 15, 16.
The shaft seals (30
}
) are worn.
Replace the seals.
See page 20.
The pump operates erratically.
The suction line is clogged.
Inspect; clear the line.
The check valve balls (301) are
sticking or leaking.
Clean or replace the balls.
See page 18.
The diaphragm (401) is ruptured.
Replace the diaphragm.
See page 20.
Summary of Contents for 234192
Page 29: ...309668 29 Notes...
