Shark SJDDG-3011, Руководство оператора, Страница: 21 / 24

Shark
®
Jetters
OPERATOR’S MANUAL 21
SJDDG-3011 • 8.914-324.0 • REV. 7/12
TROUBLESHOOTING
These troubleshooting procedures cover pump malfunctions, delivery problems and charge system malfunction.
Warning: Before attempting any repairs or maintenance, make sure machine is shut off.
PROBLEM POSSIBLE CAUSE REPAIR
LOW PRESSURE Worn or oversized nozzle Replace worn nozzle. Check nozzle size.
Clogged water and/or chemical inlet
strainer Clean or replace strainers.
Worn or damaged piston cups Replace piston cups.
Worn or damaged inlet or discharge
valve Replace worn valve poppets or valve springs.
Dirt or foreign particles in valve
assembly Remove any dirt particles.
Air leak in inlet plumbing Locate air leak. Re-seal connection or replace
damaged port.
ROUGH
OPERATION
WITH LOSS
OF PRESSURE Restricted inlet plumbing or air leak in
inlet plumbing Replace clogged inlet fittings. Check supply
hose and ensure adequate water supply.
Damaged piston, cup or pump valve Replace any damaged pump parts and clean
out any foreign particles.
Clogged nozzles Clean or replace nozzles.
WATER LEAKAGE
AT INTAKE
MANIFOLD OR
CRANKCASE Worn manifold seals, pistons or O-rings.
Or, condensation inside crankcase Replace seals, sleeves or O-rings. Change
oil at regular intervals.
Inadequate water supply to pump
creating a vacuum lock Ensure adequate tap water supply.
Clear inlet filter.
OIL
LEAKS Worn pistons and/or leaking crank seals,
crankcase cover seal or drain plugs Replace seals, sleeves or O-Rings.
EXCESSIVE
WEAR
Worn or loose bearings Replace bearings. Check bearing seals,
spacers and retainers. Replace worn parts.
SHORT PISTON
CUP LIFE
Scored cylinders from pumping acids Replace cylinders. DO NOT PUMP ACID
SOLUTIONS. For acid application, ask your
dealer for a Pump Saver Injector.
Abrasive particles in fluid being pumped Replace water and detergent strainers if dam-
aged or missing. Install additional filter if fine
abrasives are still evident.
Operator(s) running pump without water
supply Do not allow washer to be run without proper
water supply.
Hot water in pump Do not run in bypass for more than 5 minutes.
Do not let water supply exceed 140°F (60°C).
IRREGULAR
SPRAY PATTERN Worn or partially clogged nozzle Clean or replace nozzles.