MAHLE RTI RHS700 - Manual (Page 13)

- 7.1 -
Evacuation
C:\RHS Computer Files\Instructions\RHS\GB\645-40\0009A-01.doc 1997.03.26
RHS 700
After servicing the A/C unit, air and/or moisture must be evacuated. Air and/or
moisture in the A/C unit will impair system operation.
1. Set the main switch on I and switch on the EVACUATION process switch
(if the pressure exceeds 0.2 barg, the evacuation process cannot be started). If
the pressure does exceed 0.2 barg, a short recovery process should be
performed.
2. Before connecting the service couplings to the A/C unit, read the vacuum
gauge. This reading is the max. level attainable.
3. Now open the service couplings on the hoses. An evacuation can be performed
if thought necessary.
4. A vacuum check must now be made. Switch on the VACUUM CHECK
process switch and at the same time watch the vacuum gauge! If the pressure
rises continuously the system either leaks or contains moisture.
5. When the evacuation process is complete, the A/C unit can be replenished with
the amount of oil which might have been taken out during the recovery
process. Open the valve, pos. 17, on the oil container on the right-hand side
and read off the required amount of oil on the scale.
Note:
If the pressure rises slightly and then restabilises, it means that the A/C unit is
adjusting itself to the ambient temperature.