Troubleshooting - Mi-T-M CM Serie Instrucciones De Operación

SYMPTOM
Engine will not start.
No discharge at nozzle when
trigger mechanism is squeezed.
Low or fluctuating pressure.
Water is leaking from the "Heat
Dump Valve"
Oil appears milky or foamy.
Oil leaking from unit.
Detergent will not siphon into
Low Pressure Detergent mode.
Water flows back into detergent
container.
Water flows from the nozzle when the
trigger gun is locked in the "OFF"
position.
18

TROUBLESHOOTING

PROBABLE CAUSE
Various engine problems.
Low engine oil level
Unit components are frozen.
water supply not on.
Kink in water inlet hose.
Kink in high pressure discharge hose.
Water inlet screen obstructed.
Pump sucking air. (Prime eliminated)
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy.
on pump.
Pump packings worn.
Bypass valve not operating correctly.
Water temperature is too high.
Defective valve.
Water in oil.
DO NOT USE!!!!!
Detergent strainer is not completely
submerged in detergent solution.
Detergent strainer obstructed.
Detergent hose cut, obstructed or
kinked.
Not in low pressure mode.
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
accompanying your unit.
Change engine oil level
Allow to thaw. If any part of the unit
becomes frozen; excessive ressure
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.
Replace hose.
Remove screen, clean or replace.
Tighten all water intake connections
Eliminate leaks in intake line.
Clean or replace.
Remove, inspect, clean or replace.
Replace packings.
Repair or replace.
Do not allow the unit to operate in
the 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.
Use black 65° detergent nozzle.
Clean or replace.
Use one extension maximum.
Remove, clean or replace.
Remove, clean or replace.
Repair or replace.
CM-Direct Driven Operator's Manual 2009