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SYMPTOM
Engine will not start.
No discharge at nozzle
when trigger mechanism
is squeezed
Low or fluctuating pres-
sure.
Water is leaking from the
Heat Dump Valve.
Oil appears milky or
foamy.
Oil leaking from unit.
Detergent will not siphon
into Low Pressure Deter-
gent mode.
Water flows back into
detergent container
Water flows from the noz-
zle when the trigger gun
is locked in the "OFF"
position
18
TROUBLESHOOTING
PROBABLE CAUSE
Various engine problems.
Unit components are frozen.
Inadequate water supply.
Kink in water inlet hose.
Kink in high pressure discharge hose.
Water inlet strainer obstructed.
Pump sucking air. (Prime eliminated)
Not in high pressure mode.
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy. on
pump.
Pump packings worn.
Unloader valve not operating correctly.
Water temperature is too high.
Defective valve
Water in oil.
DO NOT USE!!!!!
Detergent strainer is not completely sub-
merged in detergent solution
Detergent strainer obstructed.
Detergent hose cut, obstructed or kinked
Detergent adjusting knob on pumpturned to
closed position. (If applicable.)
Nozzle assembly is plugged.
Too many high pressure hose extensions
attached to the water outlet.
Ball & Spring in Venturi stuck.
Ball & Spring in Venturi reversed, missing or
corroded.
Gun is malfunctioning.
REMEDY
Refer to the Engine Manual accompa-
nying 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 pos-
sible serious injury to the operator or
bystanders.
Ensure hose is 3/4" diameter and in-
coming water supply is turned on.
Remove kink.
Replace hose.
Remove strainer, clean or replace.
Tighten all water intake connections
Eliminate leaks in intake line.
Insert high pressure nozzle.
Remove, clean or replace.
Remove, inspect, clean or replace.
Replace packings.
Repair or replace
Do not allow the unit to operate inthe
bypass mode (with trigger gun closed)
for more than 3 minutes.
Replace
Change pump oil. Fill to proper level.
Contact Mi-T-M Customer Service.
Check, submerge if necessary.
Inspect, clean or replace.
Inspect, clean or replace.
Open adjusting knob. Refer to Cleaning
with Detergents"
Clean or replace.
Use one extension maximum.
Remove, clean or replace.
Remove, clean or replace.
Repair or replace.
Job Pro JP-Series Operator's Manual
Publicidad
