wsm M7040 - Discharging, Evacuating and Charging; Discharging the Refrigerant

CABIN
M6040, M7040, 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. (See page 10-S42.)
NOTE
• Manifold gauge indications (left side figure) at faulty
compressing by compressor.
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[2] DISCHARGING, EVACUATING AND CHARGING
IMPORTANT
• When discharging, evacuating or charging the refrigerating system, be sure to observe the "4.
PRECAUTION AT REPAIRING REFRIGERANT CYCLE". (See page 10-S7.)
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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.
IMPORTANT
• Use only R134a refrigerant recovery and recycling machine
(9). Eliminate mixing R134a equipment, refrigerant, and
refrigerant oils with R12 system to prevent compressor
damage.
CAUTION
• 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) LO Pressure Side Valve
(8) Manifold Gauge
(9) Refrigerant Recovery and Recycling
Machine
KiSC issued 07, 2012 A