MAHLE RTI RHS2680 - Manual (Page 4)

Page 2
INTRODUCTION TO THE RHS2680
The RHS2680 is a complete refrigerant management center featuring state-of-the-art electronic
control with digital weight scale measuring of refrigerant. Operation of the RHS2680 is intuitive and
very easy to master.
Following is an overview of the operation and features of the RHS2680:
RECOVER (RECYCLE)
Refrigerant is recovered from the A/C, impurities (particulates, oil, moisture and air) are removed
and the refrigerant is stored in the internal cylinder. The recovery process stops when the
RHS2680 senses an 8 InHg vacuum at the A/C. Wait for at least two minutes and watch the
pressure gauges to determine if there is an increasing pressure. If pressure in the A/C rises
during this time period due to vaporization of residual liquid refrigerant, the RHS2680 will restart
to recover this refrigerant. When the RHS2680 stays off continually for at least two minutes, the
recovery procedure is complete.
VACUUM
A deep vacuum should be drawn on the A/C to remove air, moisture and refrigerant dissolved
in the oil. A deep vacuum is especially important if the A/C was opened for replacement of
components.
PURGE AIR - DRAIN OIL
Excess air and recovered oil must be removed from the RHS2680 after all refrigerant has been
recovered from the A/C. Temperature and pressure readings are examined and air is released
using the purge valve. Oil is drained into the oil drain cup for measuring to determine the need
to replenish the A/C.
CHARGE
Refrigerant is charged into the A/C by weight. The amount to be charged is entered and the
RHS2680 automatically charges the refrigerant into the A/C.
1 R12/R134a Selector Switch
2 Keypad
3 Function Valve
4 Purge Chart
5 Gauge Manifold
6 Tool Tray
7 Purge Gauge
8 Purge Valve