Troubleshooting - Mi-T-M Corporation HHS Serie Manuel De L'utilisateur

SYMPTOM
Pump motor will not run.
No discharge at nozzle when
trigger mechanism is squeezed.
Low or fluctuating pressure.
Water is leaking from Heat Dump Valve. Water inlet temperature is too high.
Oil appears milky or foamy.
Oil leaking from unit.
Detergent will not siphon .
.
20

TROUBLESHOOTING

PROBABLE CAUSE
Circuit overload.
GFCI tripped.
Motor overload.
Inadequate water supply.
Kink in water inlet hose.
Kink in high pressure discharge hose.
Water inlet screen obstructed.
Pump sucking air. (Prime eliminated)
Adjustable Grip on Dual Lance
is not in high pressure mode.
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy.
on pump.
Pump packings worn.
Unloader/Bypass valve not operating
correctly.
Scale build up in heat exchanger coil.
Water temperature is too high.
Defective valve.
Water in oil.
Worn seals or o-rings.
Detergent strainer is not completely
submerged in detergent solution.
Detergent strainer obstructed.
Detergent hose cut, obstructed or
kinked.
Detergent adjusting knob turned to
closed position.
Nozzle assembly is plugged.
Ball & Spring in detergent strainer
stuck.
*See separate Parts List for detailed views or explanations.
REMEDY
Check wall breaker or fuse.
Reset.
Reset thermal overload button on
pump motor or inside electrical
control panel.
Ensure hose is 3/4" diameter and
incoming water supply is turned on.
Remove kink.
Replace kinked high pressure hose.
Remove screens, clean or replace.
See pg. 12, Water Supply.
Tighten all water intake connections
Eliminate leaks in intake line.
Turn grip counterclockwise to move
to high pressure.
Remove, clean or replace.
Remove, clean or replace.*
Replace packings.*
Repair or replace.*
Delime coil as explained on pg. 19.
Incoming water temperature must be
less than 125°.
Do not allow unit to operate in
bypass mode (with the trigger gun
closed) for more than five minutes.
Replace.*
Change pump oil. Fill to proper
level.
Contact Customer Service.
Check, submerge if necessary.
Inspect, clean or replace.
Inspect, clean or replace.
Open adjusting knob. Refer to page
15, "Cleaning with Detergents".
Clean or replace.
Remove, clean or replace.
Operator's Manual