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Troubleshooting
Pump indications
Pump does not cycle.
Pump will not prime.
Pump cycles rapidly.
Pump will not stall (cycles more than
once or twice/hour).
External leaks
Leaking visible at bottom of body (11).
Leaking at exhaust port in air
motor (1).
Leaking between cylinder (17)
and valve body (21).
Leaking between valve body (21)
and nipple (22).
Leaking between nipple (22)
and bushing (23).
Leaking between bushing (23)
and low-level cut-off valve (24).
Internal leaks
Pump does not prime or cycles
continuously, or slowly (more than
once or twice/hour).
1)
Do not apply threadlocker to first two threads. Contamination can occur.
Possible problems
Packings (8) too tight.
Air motor not operating properly.
Pump tube jammed and/or contains loose components.
Insufficient air pressure.
Excessive cycling speed.
Pump leaking internally.
Product source empty.
Pump requires break-in period.
Pump leaking internally.
Pump leaking externally.
Distribution system leaking.
Damaged gasket (16).
Cylinder (17) not sufficiently tight.
Packings (8) too loose.
Worn or damaged packing(s) (8).
Worn or damaged piston rod (5).
Worn or damaged gaskets (16).
Valve body (21) not sufficiently tight.
Nipple (22) not sufficiently tight and/or threadlocker
missing or inadequate.
Nipple (22) not sufficiently tight and/or threadlocker
missing or inadequate.
Bushing (23) not sufficiently tight and/or threadlocker
missing or inadequate.
Foreign material between ball (14) and seat (15).
Foreign material between ball (20) and valve body (21).
Worn or damaged ball (14).
Worn or damaged seat (15).
Worn or damaged ball (20).
Worn or damaged valve body (21).
Worn or damaged packing (13).
Worn or damaged low-level cut-off valve (24).
14
Solution
Adjust packing screw (6).
Inspect air motor and rebuild or replace as
necessary.
Rebuild pump tube.
Increase air pressure.
Reduce air pressure.
See Internal leaks.
Replenish product.
Operate pump against moderate fluid pressure
for up to one hour.
See Internal leaks.
See External leaks.
Correct leak.
Use kit 393624.
Tighten cylinder (17) into body (11).
Adjust packing screw (6).
Use kit 393624.
Replace piston rod (5).
Use kit 393624.
Tighten valve body (21) onto cylinder (17).
Apply threadlocker
1)
to nipple (22) and tighten
into valve body (21).
Apply threadlocker
1)
to nipple (22) and tighten
into bushing (23).
Apply threadlocker
1)
to bushing (23) and tighten
into low-level cut-off valve (24).
Locate and eliminate source of foreign material.
Disassemble pump tube, clean, inspect, and
replace worn or damaged components.
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