Compressors for HC, HFC, HFO

The capacity regulators protrude approximately 9 cm from the surface of the cylinder head. The arrangement can be seen in the following illustrations.

If a cylinder bank is equipped with start unloading, it is no longer available for capacity control. A 4-cylinder compressor can therefore be equipped with either 2 capacity regulators or start unloading and 1 capacity regulator. In 6-cylinder compressors, the third cylinder bank can have an additional capacity regulator.

Example of a 4-cylinder compressor for HFC, HFO: Fully equipped compressor 4NES with 2 CRII capacity regulators and compressor module CM-RC-02.
Example of a 4-cylinder compressor for HFC, HFO: Fully equipped compressor 4NES with 2 CRII capacity regulators and compressor module CM-RC-02.
Example of a 4-cylinder compressor for hydrocarbons: Compressor 4NESP with 2 CRII capacity regulators and compressor module CM-RC-02.
Example of a 4-cylinder compressor for hydrocarbons: Compressor 4NESP with 2 CRII capacity regulators and compressor module CM-RC-02.
Example of a 6-cylinder compressor for HFC, HFO: Compressor 6JE with 2 CRII capacity regulators and compressor module CM-RC-02.
Example of a 6-cylinder compressor for HFC, HFO: Compressor 6JE with 2 CRII capacity regulators and compressor module CM-RC-02.

Maximum equipment of the cylinder banks

Maximum equipment of the cylinder banks for compressors for HC, HFC, HFO

Compressors

Equipment of the cylinder banks with capacity regulators

2-cylinder compressors

2EES(P) .. CES(P)

max. 1 cylinder head

4-cylinder compressors

4FES(P) .. 4FE(P)

max. 2 cylinder heads

6-cylinder compressors

6JE(P) .. 6FE(P)

max. 3 cylinder heads

8-cylinder compressors

8GE(P) .. 8FE(P)

max. 2 cylinder heads

4-cylinder tandem compressors

44FES .. 44CES
44VES .. 44NES
44JE .. 44FE

max. 4 cylinder heads
With a view to possible load sequence switching, both compressor parts should be equipped with the same number of capacity regulators.

6-cylinder tandem compressors

66JE .. 66FE

max. 6 cylinder heads
With a view to possible load sequence switching, both compressor parts should be equipped with the same number of capacity regulators.

Compound systems with a larger number of compressors

for control accuracy etc. see

  • KT-600: Parallel compounding of BITZER reciprocating compressors

Positions and dimensions

The following illustration shows the positions of the capacity regulators on compressors 2EES(P) .. 8FE(P) (analogous: 2EESH .. 6FEH) without compressor module (CM-RC-01 or CM-RC-02). The exact dimensions with module (but without capacity regulators) are available in the BITZER Software under the "Dimensions" tab for the respective compressor.

Semi-hermetic 2-, 4-, 6- and 8-cylinder compressors with full CRII equipment (without compressor module)

Special models 4Z-5.2 .. 4N-20.2

Semi-hermetic reciprocating compressors 4Z-5.2 .. 4N-20.2 with CR capacity regulator

Open drive reciprocating compressors

Open drive reciprocating compressors 4T.2 .. 6F.2 and W4TA .. W6FA with CR capacity regulators.
Open drive reciprocating compressors 4T.2 .. 6F.2 and W4TA .. W6FA with CR capacity regulators.
Positions of the CR capacity regulators

Compressors

Position

4Z-5.2 .. 4N-20.2
4T.2 .. 4N.2
W4TA .. W4NA

cylinder bank opposite the sight glass

4H.2, 4G.2
W4HA, W4GA

both cylinder banks are possible

6H.2, 6G.2
W6HA, W6GA

outer cylinder banks

6F.2
W6FA

upper cylinder bank and cylinder bank opposite the sight glass