16
309340
Troubleshooting
PUMP PROBLEM
CAUSE
SOLUTION
Doesn’t operate.
Valves closed or clogged.
Clear air line; increase air supply. Check valves open.
Fluid hose or gun obstructed.
Clear hose or gun; use hose with larger ID.
Dried fluid on displacement rod.
Clean rod; always stop pump at bottom of stroke;
keep wet-cup filled with compatible solvent.
Air motor parts dirty, worn, or damaged.
Clean or repair air motor; see motor manual.
Output low on both
strokes.
Air line restricted or air supply inadequate.
Valves closed or clogged.
Clear air line; increase air supply. Check valves open.
Fluid hose/gun obstructed; hose ID too small.
Clear hose or gun; use hose with larger ID.
Worn packings in displacement pump.
Replace packings.
Air motor parts dirty, worn, or damaged.
Clean or repair air motor; see separate motor manual.
Open or worn intake valve.
Clear or service intake valve.
Output low on down
stroke
Open or worn intake valve.
Clear or service intake valve.
stroke.
High viscosity fluid.
Adjust intake spacers.
Output low on
upstroke.
Open or worn piston valve or packings.
Clear piston valve; replace packings.
Erratic or accelerated
speed
Fluid supply exhausted, clogged suction line.
Refill supply and prime pump. Clean suction tube.
speed.
High viscosity fluid.
Reduce viscosity, adjust intake spacers
Open or worn piston valve or packings.
Clear piston valve; replace packings.
Open or worn intake valve.
Clear or service intake valve.
Runs sluggishly.
Possible icing.
Stop pump. Let ice melt.
Cycles, or fails to hold
pressure at stall.
Worn check valves or seals.
Service pump.
Audible air leak.
Check air connections.
Service pump.
Air bubbles in fluid.
Loose suction line.
Tighten. Use a compatible liquid thread sealant or
PTFE tape on connections.
Poor finish or irregular
spray pattern.
Incorrect fluid pressure at gun.
See gun manual; read fluid manufacturer’s recom-
mendations.
Fluid is too thin or too thick.
Adjust fluid viscosity; read fluid manufacturer’s recom-
mendations.
Dirty, worn, or damaged spray gun.
Service gun.
Summary of Contents for Xtreme 145cc (600) Series
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