Instruction Manual

Page 7
WARNING
Failure to perform the Drain Oil procedure after every recycle
procedure will cause the RHS780 to eventually fail.
Repair of the RHS780 to correct this problem is not covered
by warranty.
DRAINING RECOVERED OIL
Oil is separated from the recovered refrigerant and MUST be removed following
EACH Recover/Recycle procedure to determine the amount (if any) necessary to
add into the A/C System as follows:
Note: The RHS780 must be connected to power source. Draining
Recovered Oil may be done while the RHS780 Vacuum Pump is ON.
1. Setup the RHS780 as shown on Page 4 and press and hold the Oil Drain Re-
pressurization Switch for 5 seconds and then release it.
2. Slowly open the valve on Oil Drain Bottle to drain any oil which may have
been removed from the A/C System.
Unless the A/C System had previously been overfilled, the RHS780 will
typically not remove enough oil to make replenishment necessary.
3. Close the valve on the Oil Drain Bottle.
4. Press and hold the Oil Drain Re-pressurization Switch for 5 seconds. This
permits any residual Non-Condensable Gas to be re-circulated for
reprocessing during the next recycle procedure.