Troubleshooting - Mi-T-M Corporation 37-1438 Manual Del Operador

SYMPTOM
Engine will not start.
No discharge at nozzle
when trigger mechanism is
squeezed.
Low or fluctuating pressure.
Pump oil appears milky or
foamy.
Oil leaking from unit.
Water is leaking at safety
relief valve.
Detergent will not siphon.
(when applicable)
Water flows back into deter-
gent container. (when appli-
cable)
22

TROUBLESHOOTING

PROBABLE CAUSE
Engine problems.
Unit components are frozen.
Inadequate water supply.
Kink in water inlet hose.
Water inlet screen obstructed.
Pump sucking air. (Prime elimi-
nated)
Eliminate leaks in intake line.
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy.
on pump.
Pump packings worn.
Unloader/bypass valve not operat-
ingcorrectly.
Water in oil.
Worn seals or o-rings.
Unloader malfunction.
Pressure switch malfunction.
Safety Relief Valve is defective.
Detergent strainer is not completely
submerged in detergent solution
Detergent strainer obstructed.
Detergent hose cut, obstructed or
kinked.
Nozzle assembly is plugged.
Detergent adjusting knob turned to
closed position.
Ball & Spring in detergent strainer is
obstructed.
REMEDY
Refer to the Engine Manual accompanying
your unit
Allow to thaw. If any part of the unit becomes
frozen, excessive pressure may build up in
the unit which could cause the unit to burst
resulting in possible serious injury to the
operator or bystanders.
Ensure hose is 3/4" diameter and incoming
water supply is turned on.
Remove kink.
Remove screen, clean or replace.
Tighten all water intake connections. Elimi-
nate leaks in intake line.
Insert high pressure nozzle.
Move adjustable grip on dual lance counter-
clockwise to high pressure.
Remove, clean or replace.
Remove, inspect, clean or replace.
Replace packings.
Repair or replace.
Change pump oil. Fill to proper level.
Contact Service Department.
Detect and correct unloader problem.
Detect and correct pressure switch problem.
Replace safety relief valve. NEVER run
unit without safety relief valve. Doing so can
cause an explosion!
Check, submerge if necessary.
Inspect, clean or replace.
Inspect, clean or replace.
Clean or replace
Open adjusting knob. Refer to "Cleaning w/
Detergents" pg. 18.
Remove, clean or replace.
Operator's Manual