Shark SJPE-1500, Operator'S Manual, Page: 19 / 22

Shark
®
Jetters
OPERATOR’S MANUAL
19
SJPE-1500 • 8.914-323.0 • REV. 4/12 a
TROUBLESHOOTING
Detergent System Malfunction
TROUBLESHOOTING
Unloader Valve Malfunction
PROBLEM POSSIBLE CAUSE REPAIR
WASHER FAILS TO
DRAW DETERGENT
Detergent metering valve closed or valve
clogged or defective Open detergent metering valve, following
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 flood nozzle in dual lance
wand (refer to parts breakdown).
Suction tube not below liquid surface Completely submerge suction tube and
strainer in detergent solution.
Clogged or damaged suction strainer Clean or replace strainer.
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.
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 chemical
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