Mi-T-M HDS Serie Manual Del Operador página 22

SYMPTOM
Engine will not start.
No discharge at nozzle
when trigger mecha-
nism 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.
Water flows back into
detergent container.
Water flows from the
nozzle when the trig-
ger gun is locked in
the OFF position.
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 eliminated)
Not in High Pressure Mode.
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy. on pump. Remove, inspect, clean or replace.
Pump packings worn.
Unloader/bypass valve not operating cor-
rectly.
Water in oil.
Worn seals or o-rings.
Unloader malfunction.
Pressure switch malfunction.
Safety Relief Valve is defective.
Detergent strainer is not completely sub-
merged 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.
Trigger gun is malfunctioning.
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 incom-
ing water supply is turned on.
Remove kink.
Remove screen, clean or replace.
Tighten all water intake connections.
Eliminate leaks in intake line.
Insert high pressure nozzle.
Move adjustable grip on dual lance coun-
terclockwise to high pressure.
Remove, 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 prob-
lem.
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".
Remove, clean or replace.
Repair or replace.
Operator's Manual