Product Manual

20
Shark
®
Jetters OPERATOR’S MANUAL
TROUBLESHOOTING
SJHE-1500 & SJPE-1650 • 8.914-322.0 • REV. 11/12
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 supply hose, inlet strainer
or kinked hose
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.
Improper adjustment of unloader valve Adjust as necessary.
Dirt or foreign particles in valve assembly Remove any dirt particles
Pulse valve on Turn off pulse valve.
Air leak in inlet plumbing or inaccurate
gauge
Locate air leak. Re-seal connection or
replace damaged valve.
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.
OIL
LEAKS
Worn pistons and/or leaking crank seals,
crankcase cover seal or drain plugs
Replace seals, sleeves or O-rings.
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
damaged 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).