Product Manual

Shark
®
Jetters OPERATOR’S MANUAL
21
TROUBLESHOOTING
SJHE-1500 & SJPE-1650 • 8.914-322.0 • REV. 11/12
TROUBLESHOOTING
Detergent System Malfunction
Unloader Valve Malfunction
PROBLEM POSSIBLE CAUSE REPAIR
WASHER
FAILS TO
DRAW
DETERGENT
Detergent metering valve close, clogged
or defective
Open detergent metering valve, follow-
ing procedure in operating instructions.
Back pressure in hose (when using
additional lengths of pressure hose)
Contact dealer for proper injector size
when adding lengths of hose.
Back pressure in pressure hose (when
using dual lance wand)
Use proper size detergent nozzle in
dual lance wand (refer to parts
breakdown).
Suction tube not below liquid surface Completely submerge suction tube
and strainer in detergent solution.
DETERGENT
SOLUTION
TOO WEAK
Clogged detergent strainer Clean or replace strainer.
Air leak in detergent suction tube or inlet
plumbing
Find air leak and clean or replace
parts as necessary.
Clogged or damaged suction strainer Clean or replace strainer.
DETERGENT SOLUTION
TOO CONCENTRATED
Original detergent too concentrated Dilute product as necessary to achieve
proper concentration.
DETERGENT
IN RINSE CYCLE
Dual lance wand or adjustable nozzle
holder in open position or detergent
metering valve open
Close dual lance wand adjustable
lance holder to achieve high pressure.
Close detergent metering valve.
DILUTION OF
DETERGENT
CONCENTRATE
DURING
CYCLE
Worn or defective internal check valve Repair or replace check valve or
injector parts as necessary.
Defective check valve in detergent tank Replace parts as necessary.
PROBLEM POSSIBLE CAUSE REPAIR
UNLOADER CYCLES
Fitting leaking downstream Tighten/replace fitting.
Piston or valve spring broken or worn Replace parts as necessary.
Clogged nozzle Clean or replace.
FLUID LEAKING
FROM BODY
O-ring worn or cut Replace part as necessary.
UNLOADER WILL NOT
COME TO PRESSURE
Foreign particle in valve Replace or clean.
Nozzle worn or wrong size Replace part as necessary.
Piston or valve worn Replace part as necessary.
EXTREME PRESSURE
SPIKES
Adjusting nut turned completely into
unloader
Back off adjusting nut.
Clogged nozzle Clean or replace