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