EFC, EFCe Systems – Electronic Frequency Control

Continuous variable speed control using frequency converter technology 

With the EFC and EFCe system Bock offers the most efficient means of adapting the capacity of the compressor to current refrigeration plant requirements: “Progressively adjustable speed control using frequency converter technology“.

Up to 25% less power consumption!

The EFC-System is optionally available for all Pluscom compressors HG(HA)12P, 22P, 34P

EFC-systems are compactly mounted on the compressor, wired and connected ready for use. It is activated by a pressure transducer mounted on the suction side. The adjustment range can be set individually.

In December 2009, the Bock EFC system received the BMU (German Environment Ministry) Climate Protection Innovation Award in Refrigeration Technology from the German Minister for Environment.

NEW: The EFCe-systems are optionally available for compressors of the series HG4 to HG8

EFCe systems are also optimally adjusted to the compressor at the factory and programmed with the necessary control settings. Due to their size, however, they are not directly build on the compressor but are instead intended to be set up individually. The device is controlled via a pressure sensor arranged on the intake side, or via an external control signal. The trigger for the system (start/stop) is via a pump down pressostat. The control range can be adjusted on an individual basis. The device is designed for mounting on the wall or switch cabinet.

Thanks to the oil pump lubrication all Bock compressors are ideal for speed control, in particular for low frequencies.

Not available for HA designs.