8 310543
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
1. Relieve the pressure.
2. Check all possible problems and solutions before
disassembling pump.
Problem
Cause Solution
Metering valve fails to dispense
when actuator is tripped.
Check nozzle for cured or foreign
fluid.
Clean or clear nozzle.
Observe the action of the needle
valve (7) and the spring (6) through
the vent hole in the valve body (18),
while cycling the valve.
Adjust the piston stroke. Disassemble
and clean the valve, if necessary.
Fluid or air hose is kinked or blocked. Clear or straighten hose.
Interrupted fluid supply. Clear supply line.
Check supply and refill if necessary.
Turn on supply pump.
Insufficient operating air pressure. Increase air pressure to 80 psi
(0.55 MPa, 5.5 bar).
Clear air line if blocked.
Worn or damaged parts. Disassemble and rebuild the valve.
Lubricate o-rings on installation.
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