Zetor UTILIX HT Series Operator's Manual page 128

3. Diagnosing malfunctions
(1) Tracing faults
FAULT
Unusual sound
Abnormal speed
1. Compressor
Refrigerant or oil
leakage
Excessive pressure
CABIN
SYMPTOM CAUSE
Lack of lubricant
Loose belt
Input sound
Output sound
Loose console
Clutch failure
Damaged parts
Input cause Clutch slips
No lubricant
Output cause Belt loosened
Sealing washer damaged Replace
Refrigerant or oil
Loose screw on the head Tighten
leakage
O-Ring damaged
Lack of refrigerant
Low, high
pressure
Compressor
SOLUTION
Add
Adjust
Tighten the
screws
Check
Check, replace
Check, replace
Add
Adjust
Replace
Adjust
Replace
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