SERVICE
Troubleshooting
PROBLEM
Low.Pressure
rump runs extremely rough, pressure low.
iNater leakagefrom under :he manifold.
iNater in pump crankcase.
Zrequent or premature 'ailure of the packing.
jtrong surging at the inlet Ind low pressure on the lischarge side.
hit will notstart.
:hemica1injection system oesn't work.
pray gun doesn't work r leaks.
CAUSE
Worn nozzle. Coupling slippage.
Air leak in inlet plumbing.
Relief valve stuck, partially plugged or improperly adjusted; valve seat worn.
Inlet suction strainer clogged or improper size. :
Worn packing. Abrasives in pumped fluid or severe cavita: tion. Inadequate water supply.
Fouled or dirty inlet or dis- charge valves.
Worn inletor discharge valves. Leaky discharge hose.
Pressure adjustment set down.
Restricted inlet or air entering the inlet plumbing.
Inlet restrictions and/or air leaks. Stuck inlet or discharge valve.
Leaking high pressure seals. Worn packing.
May be caused by humid air condensing into waterinside the crankcase.
Scored plungers.
Over pressure to inletmanifold. Damaged orworn plungers. 4brasive material in the fluid 3eing pumped.
Excessive pressure and/or :emperatwe of fluid being Jumped.
3ver pressure of pump. 7unning pump dry.
:oreign particles in the inlet or lischarge valve, or worn inlet and/or discharge valves.
Jnit not plugged in. j.F.1.C. activated.
ilectric motor overheated.
ilectric service off. :hemica1 injector clogged.
\djustable nozzle completely losed.
.ow chemical level.
iun cartridge needs replace-
SOLUTION
Replace with nozzle of proper size. Tighten or replace.
Disassemble, reseal, and reassemble.
Clean, and adjust reliefvalve; checkfor worn and dirtyvalve seats. Kit available.
Clean. Useadequate size. Check more frequently.
Install proper filter. Check flow available to pump.
Clean inlet anddischarge valve assemblies.
Replace worn valves, valve seats and/or discharge hose.
rurn adjustment knob
'roper size inlet plumbing: check for air :ight seal.
:lean out foreign material, replace worn Ialves.
7eplace seals. nstall newpacking.
:hange oil at 3 month or 500 hour intervals )sing Crankcase Oil (other approved oil every nonth or 200 hours) P.N.
leplace plungers
leduce inlet pressure. leplace plungers.
nstall proper filtration on pump inlet
IIlumbing.
:heck pressures and fluid inlettemperature; le sure they are within specified range.
leduce pressure.
Do not run pump withoutwater.
Check for smooth lapsurfaces on inlet and discharge valve seats. Discharge valve seats and inlet valve seats may be lapped on a very fine oilstone.,
Check power cord.
Check for proper grounding. Push switch ON (RESET) button.
Let motor cool and push reset button on rear of motor. ,
Check fuse/circuit breaker panel.
Disassemble chemical valve and clean. Check and cleanchemical hose and filter.
Turn control ringon nozzle clockwise to cause drop in pressure.
Check level of chemical.
Replace cartridge (see gunparts drawing).
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