Mitsubishi TDJ430D User Manual

12.7 Caution to be taken at the time of periodic inspection
– 38 –
No. Item Contents Care to be taken at the time of operation Anticipated defect Disposition (remarks)
1
2
3
4
Tension of belt
Inspection of a
ground wire on
the side of a
vehicle and
maintenance
and
disposition of
harness.
Washing
inside of
refrigerant
circuit and
operation for
cleaning
Refrigerating
machine oil
• Tension of belt between
direct coupled type
engine pulley, idle pulley
and clutch pulley
• Disposition of a ground
wire terminal for the unit
and vehicle chassis
• When compressor is
replaced due to
compressor accident,
check for refrigerant and
oil stain,
and *if necessary, wash
inside of the circuit or
operate for cleaning.
(*) In case of item 4 of
"anticipated defect"
shown on the right
hand column.
• Precaution when using
refrigerating machine oil
for charging to the
compressor.
1. Use tension meter to adjust belt and
provide with an appropriate tension.
2. As a new belt becomes stretched in its
early stage, re-fasten the belt after
operating about 10Hr.
3. After that, check and adjust every
100Hr.
1. Clamp the ground wire terminal and
apply sealer so as not to have its inside
broken during running of a car. Remove
painting on the side of a vehicle.
1. Washing inside of refrigerant
circuit
(1) Enclose HCFC141b and circulate by
another pump.
And after washing inside circuit,
recover HCFC141b and enclose
refrigerant after vacuumizing it.
2. Operation for cleaning
(1) Replace with a new compressor and
after vacuumizing it, charge gas and
perform cooling operation for about
an hour. (For type L specification,
perform defrost operation for about
15 minutes)
(2) After that, recover refrigerant and
replace receiver dryer or dryer.
Replace oil for compressor and once
again vacuumize and charge gas.
The above procedures will prevent a
compressor from becoming
defective again.
1. The refrigerating machine oil (Diamond
Freeze MA32) has an extremely high
absorbency, so work quickly when
handling it.
2. Never use leftover oil. Always dispose
of it.
3. Dispose of any refrigerating machine oil
in the oil can be used, and store it in a
dry state.
1. Too loose
• Slipping of belt
• Dropping of capacity
2. Too tight
• Abnormal pulley
bearing
• Premature wearing of
belt
• Breaking of engine
crank
1. Many defects which will
cause burning of relay,
etc.
2. Breaking of terminal due
to its corrosion
3. Failure of contact
1. No refrigeration
2. Clogging of expansion
valve
3. Clogging of dryer
4. Symptom of compressor
• In case of burning
• In case of remaining oil
having nearly black
color and metal powder
mixed.
• In case of having much
wear and many
scratches on the sliding
surface of cylinder,
piston and rod.
When such symptoms as
above have occurred,
same kind of defect may
happen again soon as it is
possible that the
refrigerant circuit is
stained even after
replacing the compressor.
1. Clogging may occur in
each section if
refrigerating machine oil
exposed to air for a long
time is used.
1. Proper tension
• Direct coupled type
Bending of 7 ~ 10mm
when pushed by 98N
(10kg) force
1. Confirm at each
inspection.
2. Apply sealer to each
terminal of wiring
(except inside of control
box)
1. HCFC141b is a
refrigerant for washing.
1. Do not use refrigerating
machine oil that has been
exposed to air for a long
time.

Mitsubishi TDJ430D Specifications

General

Brand	Mitsubishi
Model	TDJ430D
Category	Refrigerator
Language	English