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TROUBLESHOOTING CHART
WARNING
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, or injury from
moving parts, always follow the
Pressure Relief Procedure Warning
before proceeding.
I
8
Problem
Cause
Solution
-0w pressure and/or
,ump runs rough
Worn or wrong size tip,
Replace with tip of proper size.
Inlet filter clogged.
Clean. Check more frequently.
Worn packings, abrasives in water or
natural wear.
Check filter. Replace packings. See
PUMP SERVICE.
Inadequate water supply.
Check water flow rate to pump.
Coupling slippage. Tighten or replace.
Fouled or dirty inlet or discharge valves.
Even a small particle can cause the valve
Clean inlet and discharge valve assemblies. Check
filter.
to stick.
Restricted inlet.
Check garden hose, may be collapsed or kinked.
Worn inlet or discharge valves.
Replace worn valves.
Leaking high pressure hose.
Replace high pressure hose.
Nater leakage from
under pump manifold
Worn packings.
Install new packings. See PUMP SERVICE.
Nater in pump
Humid air condensing inside crankcase.
Change oil as specified in MAINTENANCE.
Worn packings.
Install new packings. See PUMP SERVICE.
Oil seals leaking.
Install new oil seals. See PUMP SERVICE.
?equent or
Iremature failure of
Scored, damaged or worn plungers.
Install new plungers. See PUMP SERVICE.
he packings
Abrasive material in the fluid being pumped.
Install proper filtration on pump inlet plumbing.
Inlet water temperature too high.
Check water temperature; may not exceed 160°F
Overpressurizing pump.
Do not modify any factory-set adjustments. See
EQUIPMENT MISUSE HAZARD.
Excessive pressure due to partially plugged
or damaged tip.
Clean or replace tip. See Installing and Changing Spray
Tips.
Pump funning too long without spraying. Never run pump more than 10 minutes without spraying
Running pump dry.
Do not run pump without water.
Strong surging at the
nlet and low pressure
Foreign particles in the inlet or discharge
Clean or replace valves. See PUMP SERVICE.
on the discharge side
valve or worn inlet and/or discharge valves.
Jnit will not start
Unit not plugged in.
Check power cord.
Electrical service off/GFCI activated.
Check fuse/circuit breaker. Check for proper
Thermal overload has tripped.
grounding.
Press reset button on motor.
Chemical injector will
lot siphon
Chemical injector clogged.
Disassemble chemical valve and clean. Check and
clean chemical hose and filter.
Adjustable nozzle completely closed (826).
Turn control ring on nozzle clockwise to cause drop in
pressure.
Low
chemical level.
Check level of chemical
Wrong tip (1235).
Install chemical tip.
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