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Maintenance
See the separate component instruction manuals for individual component maintenance procedures.
Daily Maintenance
Check the hoses, tubes, and couplings daily. Tighten
all fluid connections before each use.
Flushing the System
Flush the system at the following times:
D
Before the first-time use
D
When changing colors
D
Before fluid can dry or settle out in a dormant
system
D
Before storing the system
Troubleshooting
PROBLEM
CAUSE
SOLUTION
Pump will not run.
Closed air line valve.
Open valve.
Inadequate air supply, or clogged/
restricted air line.
Increase air supply. Do not exceed
maximum air inlet pressure.
Open or clear air line.
Clean air filter.
Clogged fluid line or spray gun.
Clear, service. Do not allow fluid to
set up in the pump and lines.
Stuck or damaged pump air valve.
Service pump. Use filtered air.
Ruptured diaphragm.
Service pump.
Pump runs sluggishly.
Worn or damaged spool o-rings.
Service pump.
Pump runs erratically.
Clogged suction line or inlet strainer. Clear.
Sticking or leaking check valves.
Service pump.
Pump runs too fast.
Exhausted fluid supply.
Refill fluid supply and prime sprayer.
Pump cycles at stall or fails to hold
pressure at stall.
Worn check valves or o-rings.
Service pump.
Audible air leak.
Worn air valve cup or plate.
Service pump.
Air bubbles in fluid.
Loose suction line.
Tighten. Use a compatible liquid
thread sealant on connections.
Poor finish or irregular spray pat-
tern.
Incorrect fluid or air pressure at gun. See gun manual; read fluid
manufacturer’s recommendations.
Use fluid regulator.
Fluid is too thin or too thick.
Adjust fluid viscosity; read fluid
manufacturer’s recommendations.
Dirty, worn, or damaged spray gun.
Service gun.
Fluid is settling out.
Use agitator. Order Part No. 245081
Agitator Kit.
