MAHLE RTI RRC750-SP1 - Manual (Page 8)

Page 7
REMOVING AIR FROM OUTLET CYLINDER
The Pressure Gauge mounted on the Vapor Port of the Outlet Cylinder should be checked
periodically for an indication of excessive Air. The end of the Tee Fitting to which the Pressure
Gauge is attached must be capped. All Valve Cores, if any, must be removed from the Tee Fitting.
Open the Vapor Valve on the Outlet Cylinder to read the pressure in the cylinder.
Measure the ambient temperature and find the corresponding pressure for that temperature in the
following Pressure-Temperature Table.
If the Pressure Gauge reading is greater than the pressure determined from the table, the excess
air should be vented from the Outlet Cylinder as follows:
1. Close the Vapor Valve on the Outlet Cylinder.
2. Remove the cap from the Tee Fitting.
3. Slowly open the Vapor Valve to release Air until the Pressure Gauge reads the same as the
temperature determined from the table.
4. Close the Vapor Valve and replace cap on the Tee Fitting.
EXCESSIVE PRESSURE DUE TO AIR IN THE OUTLET CYLINDER WILL CAUSE THE 750-SP1
TO SHUT DOWN IN A "HIGH PRESSURE" CONDITION OR REFRIGERANT MAY NOT FLOW
FROM THE 750-SP1 TO THE OUTLET CYLINDER.