Scroll compressors

If a BITZER compressor is no longer available, it can often be easily replaced by a current model. The most common cases are compiled in the Technical Information AT-310.

Yes, every ORBIT compressors be operated with a frequency inverter. Depending on the application, frequencies of 35 .. 75 Hz are possible – with certain limitations at high condensing temperatures.
For details see Technical information EST-420.

Yes, this is possible with the BITZER Advanced Header Technology (BAHT) for ORBIT compressors. The application with frequency inverter (on each or only on one compressor) is also possible. ESH7 compressors can only be operated as tandems, EL.7 compressors only as single application.
For details see Technical Information documents EST-420 (operation with frequency inverter) and EST-600 (integration into the refrigerant circuit).

With speed controlled part load via frequency inverter, ECO operation is possible in principle in consultation with BITZER.
For details see Technical information EST-610.

There are many possible tandem and trio compound units with BITZER Advanced Header Technology (BAHT), incl. various mixed tandems (ORBIT 6 + ORBIT 8). Dimensional drawings and further information are available from BITZER on request. Depending on the combination, a different diameter is required for the suction gas line of the ORBIT 8 compressor.
For details see Technical information EST-600.

When operating with BAHT, the oil is always distributed from the primary compressor to the other compressor(s), therefore the oil level of the primary compressor may be below the sight glass. To determine the oil level correctly, switch off all compressors and wait 60 seconds.
For details see Technical information EST-600.

Yes, all scroll compressors for refrigerants of safety class A2L are certified according to CE and UL.
For details see BITZER website.

Due to the stricter requirements of the Pressure Equipment Directive for use with flammable refrigerants, the manufacturing effort is significantly higher. An A2L compressor can be operated with A1 refrigerants, but not vice versa.
For details see Operating instructions ESB-130.