Kubota B1830, Workshop Manual

Page: 521 / 548

CABIN B1830,B2230,B2530,B3030, WSM
10-S16
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-S32.)
NOTE
• Manifold gauge indications (left side figure) at faulty
compressing by compressor.
9Y1210003CAS0026US0
[2] DISCHARGING, EVACUATING AND CHARGING
IMPORTANT
• When discharging, evacuating or charging the refrigerating system, be sure to observe the
"PRECAUTION AT REPAIRING REFRIGERANT CYCLE".
9Y1210003CAS0027US0
(1) Discharging the System
Discharging R134a Refrigerant
Prepare for the R134a refrigerant recovery and recycling
machine.
1. Connect low pressure side hose (blue) from the recovery and
recycling machine to LO pressure side charging valve (1) on the
compressor (3). Connect high pressure side hose (red) to HI
pressure side charging valve (2) on the compressor (3).
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 systems to prevent
compressor damage.
CAUTION
• Protect fingers with cloth against frostbite by refrigerant
when disconnecting the hose to the charging valve.
9Y1210003CAS0028US0
(1) LO Pressure Side (2) HI Pressure Side
(1) LO Pressure Side Charging Valve
(2) HI Pressure Side Charging Valve
(3) Compressor
KiSC issued 05, 2012 A