Cub Cadet 8454, Service Manual

Page: 331 / 334

CABIN SYSTEM
9-17 D569-W02 May-2003
569W921A
569W922A
• When exhausting the refrigerant, ex-
haust it to the low pressure side slowly
and check the pressure graduation
and sight glass to check the amount
of refrigerant.
• Pay attention to the contamination of
radiator.
2. Excess of refrigerant charging
Status: Not cool
Phenomena:
- Pressure rising by overcharging of refrigerant
- Lack of cooling of the compressor
Cause:
- Pressure rising by overcharging of refrigerant
- Lack of cooling of the compressor
Action:
- Clean the compressor
- Check and adjust fan belt or compressor motor
- Check the amount of refrigerant
3. Air mixing (lack of vacuum working)
Status: Not cool
Phenomena:
- The pressure of high /low pressure side is high.
- The pipe of low pressure side is not cold.
Cause: Air mixing in the refrigerating cycle. In case
of no vacuum working, the graduation is shown on
the left figure.
Action: When charging the refrigerant by making a
vacuum, check the guide.
In case of operating for a long time in the state of air
mixing, replace the receiver drier.
2.5 ~ 3.5 kgf/cm
2
35.6 ~ 49.8 psi
20 kgf/cm 2
284.5 psi
Low excess of
refrigerant charging
High excess of
refrigerant charging
2.5 ~ 3.5 kgf/cm 2
35.6 ~ 49.8 psi
23 ~ 24 kgf/cm
2
327.1 ~ 341.3 psi
Low air mixing in the
refrigerating cycle
High air mixing in the
refrigerating cycle
CAUTION
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