Shark SJDDG-3011, Operator'S Manual, Page: 22 / 24

22
Shark
®
Jetters
OPERATOR’S MANUAL
SJDDG-3011 • 8.914-324.0 • REV. 7/12
TROUBLESHOOTING
Detergent System 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
Air leak in detergent suction tube or
inlet plumbing Find air leak and clean or replace parts as
necessary.
Clogged detergent 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.
TROUBLESHOOTING
Unloader Valve Malfunction
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.