MAHLE RTI RHS700 - Manual (Page 31)

- 15.3 -
Appendixes
C:\RHS Computer Files\Instructions\RHS\GB\645-40\0009A-01.doc 1997.03.26
RHS 700
Test 3:
High pressure Approx. 7 - 15 bar
Low pressure Approx. 1.5 bar
Fault/problem Symptom Possible cause Remedy
A/C unit runs irregu-
larly Varying pressures on
high and low-pressure
sides Moisture in A/C unit
causes ice on expan-
sion valve and reduces
output.
Filter drier saturated Empty, evacuate and
recharge A/C unit.
After recovery process
replace filter drier. If
necessary, remove and
clean expansion valve.
Replace valve or fit
new valve.
Test 4:
High pressure Approx. 6 bar
Low pressure Approx. -0.3 bar
Fault/problem Symptom Possible cause Remedy
A/C unit does not cool
- or cools only slightly Hoses ahead of or after
expansion valve or
filter drier covered
with moisture or ice Because of moisture in
A/C unit, expansion
valve or filter drier
blocked by ice Cut out A/C unit, wait
a few minutes and
empty it. Then eva-
cuate and recharge
A/C unit.