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307886 9
Troubleshooting
WARNING
To reduce the risk of serious bodily injury, including
fluid injection, splashing in the eyes or on the skin,
or injury from moving parts, always follow the
Pressure Relief Procedure on page 5 whenever
the pump is shut off, before installing, cleaning,
adjusting, removing or servicing the valve or any
part of the system, and whenever you stop
spraying.
NOTE: Check all possible remedies in the table below
before you disassemble the valve.
Problem
Cause Solution
No pressure regulation Damaged diaphragm (26 or 27).
Damaged valve actuator (9).
Replace diaphragm. See page 7.
Replace valve actuator. See page 7.
Pressure creeps above
setting
Damaged diaphragm (26 or 27).
Ball (5) or seat (6) leaking or dirty.
Replace diaphragm. See page 7.
Replace the cartridge or clean seat.
See page 7.
Pressure drops below setting Empty/clogged supply line.
Using valve beyond its rated flow
capacity. See page 13.
Fill/flush supply line.
Install valve for each spray gun or
dispensing valve.
Fluid leaks from under spring
housing (16)
Loose spring housing.
Damaged diaphragm (26 or 27).
Tighten screws (19) in sequence and to
torque shown in Fig. 2 on page 7.
Replace diaphragm. See page 7.