Bitzer OFC

ST-120-3
Protection devices for screw compressors of HS.-, CS.-, OS.-, VSK series
Translation of the original document
English....................................................................................................................................................... 2
Schutzgeräte für Schraubenverdichter der HS.-, CS.-, OS.-, und VSK-Serie
Originaldokument
Deutsch ..................................................................................................................................................... 14
Dispositifs de protection pour des compresseurs à vis des séries HS.-, CS.-, OS.-, et VSK
Traduction du document original
Français..................................................................................................................................................... 25
SE-E1
SE-E3
SE-B2
OFC
Electrically skilled installer
Elektrisch unterwiesener Monteur
Monteur habilité

Bitzer OFC Specifications

General

Brand	Bitzer
Model	OFC
Category	Protection Device
Language	English

Summary

Introduction to Electronic Protection Devices

Safety Precautions and Authorized Personnel

Authorized Staff for Operations

Specifies that only qualified and authorized staff should perform work on protection devices and refrigeration systems.

Understanding Residual Risks

Highlights unavoidable residual risks from compressors and accessories, emphasizing document reading.

Safety References and Hazard Prevention

Details safety references for preventing hazards, including notices, cautions, warnings, and dangers.

Overview and Technical Data of Protection Devices

Technical Data Summary

Presents a comparative overview of technical specifications for various BITZER protection devices.

Protection Devices SE-E1 and SE-E3

Monitoring Functions for SE-E1 and SE-E3

Details monitoring functions including temperature, rotation direction, and phase failure for SE-E1/SE-E3.

Protection Device SE-B2

Monitoring Functions for SE-B2

Describes the use of SE-B2 for oil flow monitoring in semi-hermetic and open-drive screw compressors.

Oil Flow Monitoring Device OFC

Electrical Connections and Wiring Diagrams

Schematic Wiring Diagrams Overview

Provides an introduction to schematic wiring diagrams for protection devices in compressors.

CS Series: SE-E1 SE-E3 Connection

Illustrates the electrical connection of SE-E1/SE-E3 for CS series compressors.

HS Series: SE-E1 SE-E3 with SE-B2 Connection

Shows the connection of SE-E1/SE-E3 with SE-B2 for HS.53..HS.74 series.

HS Series: SE-E1 SE-E3 with OFC Connection

Details the electrical connection of SE-E1/SE-E3 with OFC for HS.53..HS.74 series.

HS Series: SE-E1 SE-E3 with Two SE-B2 Connection

Presents the wiring for SE-E1/SE-E3 with two SE-B2 units for HS.85 series compressors.

HS Series: SE-E1 SE-E3 with SE-B2 and OFC Connection

Illustrates the connection of SE-E1/SE-E3, two SE-B2, and one OFC for HS.85 series.