MAHLE RTI RHS700 - Manual (Page 30)

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Appendixes
C:\RHS Computer Files\Instructions\RHS\GB\645-40\0009A-01.doc 1997.03.26
RHS 700
Test 1:
High pressure 8 - 9 bar
Low pressure Approx. 0.8 bar
Fault/problem Symptom Possible cause Remedy
Unsatisfactory
refrigeration output Virgin ventilation air
Air bubbles in sight
glass Leak in A/C unit
Insufficient refrigerant
in A/C unit Locate leak and repair
Replenish refrigerant
Test 2:
High pressure Approx. 20 bar
Low pressure Approx. 2.5 bar
Fault/problem Symptom Possible cause Remedy
Unsatisfactory
refrigeration output Refrigerant over-
charged
Insufficient condenser
cooling
Fan not running
Reduced condenser
output because of oil
or dirt deposits
Insufficient oil in A/C
unit (compressor fric-
tion)
Clean the condenser
Repair fan
Clean the condenser
Replenish oil
If none of the above
steps remedy the fault,
check refrigerant
quantity in A/C unit,
empty, evacuate and
recharge unit