Kubota B3350HSDC - Discharging the Refrigerant; Discharging, Evacuating and Charging

CABIN
B2650HSDC, B3350HSDC, WSM
9-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 9-S36.)
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 9-S7.)
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(1) Discharging the Refrigerant
Prepare for the R134a refrigerant recovery and recycling
machine.
1. Connect low pressure side hose (blue) (4) from the recovery
and recycling machine to LO pressure side charging valve (3).
Connect high pressure side hose (red) (1) 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. 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) Charging Hose (Red)
(2) HI Pressure Side Charging Valve
(3) LO Pressure Side Charging Valve
(4) Charging Hose (Blue)
(5) HI Pressure Side Valve
(6) LO Pressure Side Valve
(7) Manifold Gauge
KiSC issued 05, 2014 A