SKF Lincoln Guía De Instalación Y Mantenimiento página 10

Pump troubleshooting chart
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
Product leakage visible at bottom of body (10)
Product leakage at exhaust port in air motor
assembly (1)
Product leakage between cylinder (13) and foot
valve body (19)
Internal leaks
Pump does not prime or cycles continuously
or slowly (once or twice/hour)
Possible problems
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 (11)
Cylinder (13) not sufficiently tight
Worn or damaged seal (9)
Worn or damaged air motor piston rod
Worn or damaged gaskets (11)
Foot valve body (19) not sufficiently tight
Foreign material between ball (18) and foot
valve body (19)
Foreign material between washer (14) and plunger
assembly (15)
Worn or damaged ball (18)
Worn or damaged foot valve body (19)
Worn or damaged washer (14)
Worn or damaged plunger assembly (15)
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Solution
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
Replace gasket (11)
Tighten cylinder (13) into body (10)
Use minor repair kit 279338
Replace air motor piston rod
Replace gaskets (11)
Tighten foot valve body (19) into cylinder (13)
Locate and eliminate source of foreign material
Disassemble pump tube, clean, inspect, replace
worn or damaged components