Mitsubishi MOTORS CARISMA 1996, Service Bulletin

Page: 113 / 232

3
Performance Temperature Chart
Garage ambient temperature °C 20 25 35 40
Discharge air temperature °C 2.5 - 4.5 2.5 - 4.5 4.0 - 6.5 6.5 - 9.0
Compressor high pressure kPa 765 - 960 765 - 960 1,325 - 1,420 1,570 - 1,765
Compressor low pressure kPa 40 - 135 40 - 135 80 - 175 155 - 255
REFRIGERANT LEAK REPAIR
LOST CHARGE
If the system has lost all charge due to a leak:
1. Evacuate the system. (See procedure.)
2. Charge the system with approximately one
pound of refrigerant.
3. Check for leaks.
4. Discharge the system.
5. Repair leaks.
6. Replace receiver drier.
Caution
Replacement filter-drier units must be
sealed while in storage. The drier used in
these units will saturate water quickly
upon exposure to the atmosphere. When
installing a drier, have all tools and
supplies ready for quick reassembly to
avoid keeping the system open any longer
than necessary.
7. Evacuate and charge system.
LOW CHARGE
If the system has not lost all of its refrigerant
charge; locate and repair all leaks. If it is neces-
sary to increase the system pressure to find the
leak (because of an especially low charge) add
refrigerant. If it is possible to repair the leak
without discharging the refrigerant system, use
the procedure for correcting low refrigerant level.
HANDLING TUBING AND FITTINGS
Kinks in the refrigerant tubing or sharp bends in
the refrigerant hose lines will greatly reduce the
capacity of the entire system. High pressures are
produced in the system when it is operating.
Extreme care must be exercised to make sure
that all connections are pressure tight. Dirt and
moisture can enter the system when it is opened
for repair replacement of lines or components.
The following precautions must be observed.
The system must be completely discharged
before opening any fitting of connection in the
refrigeration system. Open fittings with caution
even after the system has been discharged. If
any pressure is noticed as a fitting is loosened,
allow trapped pressure to bleed off very slowly.
Never attempt to rebend formed lines to fit. Use
the correct line for the installation you are
servicing. A good rule for the flexible hose lines
is keep the radius of all bends at least 10 times
the diameter of the hose.
Sharper bends will reduce the flow of refrigerant.
The flexible hose lines should be routed so that
they are at least 80 mm from the exhaust
manifold. It is good practice to inspect all flexible
hose lines at least once a year to make sure
they are in good condition and properly routed.
Unified plumbing connections with O-rings, these
O-rings are not reusable.
55-17
6.0 - 9.0 6.0 - 9.0 7.0 - 11.5 9.0 - 12.5
870 - 1,100 970 - 1,100 1,580 - 1,780 1,630 - 1,780
110 - 190 110 - 190 160 - 240 170 - 250
HEATER, AIR CONDITIONER AND
VENTILATION <MANUAL AIR CONDITIONERS> - On-vehicle Service
55200150045
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