Robinair 34100 Automatic A-C Charging Station - Manual (Page 4)

2 © 1991 Robinair Division, SPX Corporation
This automatic A/C charging station is
designed with you in mind. It is accurate,
easy to program, and simple to use.
Before using the station, read and
understand all instructions and warnings
in this operating manual.
The 220V 50Hz models have some
operating exceptions, which are noted in
this operating manual.
Introduction In addition, all measurements are metric
and the manifold is equipped with kPa/
bar gauges showing temperature in
degrees Celsius.
Before operating the 220V 50Hz model,
plug the short power cord from the upper
control box into the outlet on the lower
power box. Plug the main power cord
into a 220V 50Hz power source that is
free of transients and electrical noise.
To set up the station for operation, you
need to prepare the vacuum pump and
install the refrigerant tank.
PREPARING THE VACUUM PUMP
The VacuMaster ® vacuum pump is
shipped without oil in the reservoir.
Before starting the station, you must
fill the pump with oil and remove the
exhaust plug from the end of the
pump’s handle.
Note: The Iso-Valve TM isolation valve on
the side of the pump must remain open
(the position shown in the illustration)
for the station to operate.
CAUTION! Do not attempt to run the
vacuum pump when the manifold gauge
set shows pressure readings above 5 psi.
In the vacuum mode, positive pressure
will:
• High pressure — not allow the
vacuum solenoids to open.
• Low pressure — blow oil out of the
pump handle when the vacuum
solenoids do open.
Running the vacuum pump with positive
pressure locks high pressure between the
two solenoids and prevents operation of
the pump.
Follow these procedures to prepare the
vacuum pump for use with the charging
station.
1. Remove and discard the exhaust plug
from the end of the pump’s handle.
2. Remove and retain the black plug on
the oil fill port.
3. Pour vacuum pump oil into the oil fill
port until oil appears in the sight
glass on the reservoir. The approxi-
mate oil capacity of the pump is 13
ounces (384 milliliters).
4. Close both the high side and low side
valves on the station’s manifold.
Diagram of Vacuum Pump Components
Set Up
Instructions
EXHAUST PLUG
OIL FILL PORT
SIGHT
GLASS
OIL
DRAIN
VALVE
ISO-VALVEˇ