CABIN
L3540-II, L4240-II, L5040-II, L5240-II, L5740-II , WSM
10-S17
Faulty Compression of Compressor
1. Symptoms seen in refrigerating cycle
• LO pressure side (1)
0.39 to 0.59 MPa (4 to 6 kgf/cm
2
, 56.9 to 85.3 psi)
• HI pressure side (2)
0.69 to 0.98 MPa (7 to 10 kgf/cm
2
, 99.6 to 142.2 psi)
2. Probable cause
• Leak in compressor.
3. Solution
• Replace compressor. (Refer to "(2) Removing Compressor
Assembly" of "[2] DISASSEMBLING AND ASSEMBLING"
in this section.)
• Manifold gauge indications (left side figure) at faulty
compressing by compressor.
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[2] DISCHARGING, EVACUATING AND CHARGING
• When discharging, evacuating or charging the refrigerating system, be sure to observe the "4.
PRECAUTION AT REPAIRING REFRIGERANT CYCLE". (Refer to "4. PRECAUTION AT REPAIRING
REFRIGERANT CYCLE" in this section.)
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(1) Discharging the Refrigerant
Prepare for the R134a refrigerant recovery and recycling
machine (9).
1. Connect low pressure side hose (blue) (4) from the recovery
and recycling machine (9) to LO pressure side charging valve
(1). Connect high pressure side hose (red) (5) to HI pressure
side charging valve (2).
2. Follow the manufacturers instructions and discharge the
system.
• Use only R134a refrigerant recovery and recycling machine
(9). Eliminate mixing R134a equipment, refrigerant, and
refrigerant oils with R12 system to prevent compressor
damage.
• Protect fingers and eyes with cloth against frostbite by
refrigerant when disconnecting the hose to the charging
valve.
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(1) LO Pressure Side (2) HI Pressure Side
(1) LO Pressure Side Charging Valve
(2) HI Pressure Side Charging Valve
(3) Compressor
(4) Charging Hose (Blue)
(5) Charging Hose (Red)
(6) HI Pressure Side Valve
(7) Manifold Gauge
(8) LO Pressure Side Valve
(9) Refrigerant Recovery and Recycling
Machine
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