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Troubleshooting
8 312796R
Troubleshooting
Relieve the pressure before checking or servicing
the equipment.
NOTICE
Check all possible problems and causes before dis-
assembling the pump.
Problem Cause Solution
Air motor will not run. DataTrak solenoid engaged (DataTrak
models with runaway protection).
Push solenoid release button (118).
Remove solenoid and manually
move pin.
Damaged air valve (17). Replace or service air valve (17).
See page 9.
Damaged pilot valve (19). Replace pilot valves (19). See page
13.
Air continuously exhausting
around air motor piston rod.
Damaged u-cups (3, 43). Replace piston rod u-cups (3, 43).
See page 13.
Air continuously exhausting from
muffler.
Damaged air valve plate (105) or cup
(112).
Replace or service air valve (17).
See page 9.
Air motor “bounces” at top of
stroke.
Damaged bottom pilot valve. Replace bottom pilot valve (19). See
page 13.
Air motor “bounces” at bottom of
stroke.
Damaged top pilot valve. Replace top pilot valve (19). See
page 13.
Icing inside motor. Air motor operating at high pressure
or high cycle rate.
Reduce pressure, cycle rate, or duty
cycle of motor.
Reduce dew point of compressed air
in moisture coalescing filter.