Page 12
Shark 808/1010 • Rev. 7/02
TROUBLESHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
Detergent not
drawing.
Air leak.
Tighten all clamps. Check detergent
lines for holes.
Valve in the injector head may be
blocked, dirty or damaged.
Clean or replace valve in injector.
Filter screen on detergent suction
hose plugged.
Clean or replace.
Dried up detergent plugging
metering valve.
Disassemble and clean thoroughly.
Low detergent level.
Add detergent if needed.
Discharge water temperature
above 180
o
F.
Lower discharge water temperature.
Pump running
normally but
pressure low on
installation.
Pump sucking air.
Check water supply and possibility
of air seepage.
Check valves sticking.
Ch e ck a n d cl e a n o r r e p l a c e i f
necessary.
Unloader valve seat faulty.
Check and replace if necessary.
Nozzle incorrectly sized.
Check and replace if necessary
(See serial plate for proper size).
Worn piston packing.
Check and replace if necessary.
Fluctuating pressure.
Check valves worn.
Check and replace if necessary.
Blockage in check valve.
Check and replace if necessary.
Pump sucking air.
Check water supply and air seepage
at joints in suction line.
Worn piston packing.
Check and replace if necessary.
Pump noisy.
Air in suction line.
C h e ck wa t e r s u p p l y a n d c o n -
nections on suction line.
Broken or weak inlet or discharge
valve springs.
Check and replace if necessary.
Excessive matter in check valves.
Check and clean if necessary.
Worn bearings.
Check and replace if necessary.
