Based on the 6-cylinder compressor HG7, a selection of two-stage variants is available for extended use in intense cooling. The selection of the liquid intercooler unit is available for three different refrigerants: R404A (R507), R410A and R22. Basically it concerns different expansion valve assemblies. Therefore in the further descriptions only one option (e.g. HGZ7/2110-4 R22) is indicated.
The optional two-stage system is composed of:
The two possible optional variants of the HGZ7:
Intermediate pressure line mounted and insulated
Liquid supercooler, expansion valve, solenoid valve, two sight glasses, filter dryer everything enclosed separately for individual, external mounting.
Liquid supercooler, expansion valve, solenoid valve, two sight glasses, filter dryer attached directly to the compressor, lined and insulated.
Stages divided into LP / HP at the ratio of 2 : 1
Two-stage operation with liquid supercooler
Expansion valve adjusted to refrigerant and application
Extremely economical and reliable concept.