Introduction; Also Observe The Following Technical Documents; Safety; Authorized Staff - Bitzer 4PTEU-6LK Technical Information

1 Introduction

This Technical Information describes the control prin-
ciple and the function of the CRII system for capacity
control of BITZER reciprocating compressors for tran-
scritical CO applications in connection with the com-
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pressor module CM-RC-01.
This new mechanical capacity control is especially de-
signed for the high pressures and pressure differences
occurring in transcritical CO
quasi-stepless capacity control in accordance with the
capacity requirement of a superior system controller
with simple and effective activation by the compressor
module CM-RC-01. The operating data and control
parameters can be monitored and read out by the
BEST SOFTWARE.

1.1 Also observe the following technical documents

• KB-130 Operating Instructions Semi-hermetic recip-
rocating compressors for transcritical CO
tions
• KB-104 Operating Instructions ECOLINE reciprocat-
ing compressors
• KT-230 Technical Information: Compressor module
for reciprocating compressors

2 Safety

Compressors and compressor module have been built
in accordance with state-of-the-art methods and current
regulations. Particular importance was placed on user
safety.
The notes given in the Operating Instructions of the
compressor must be followed in addition to this Tech-
nical Information.
Always keep the operating instructions and this tech-
nical information in the vicinity of the refrigeration sys-
tem during the whole lifetime of the compressor.

2.1 Authorized staff

All work done on the compressors, the refrigeration
systems and their electronic accessories may only be
performed by qualified and authorized personnel who
have been trained and instructed accordingly. The local
regulations and guidelines will apply with respect to the
qualification and expertise of the specialists.
KT-102-1
applications. It allows a
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applica-
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2.2 Residual risks

Compressors and electronic accessories may present
unavoidable residual risks. This is why any person
working on this device must carefully read this docu-
ment!
The following regulations shall apply:
• the relevant safety regulations and standards (e.g.
EN 378, EN 60204 and EN 60335),
• generally accepted safety rules,
• EU directives,
• national regulations.

2.3 Safety references

are instructions intended to prevent hazards. Safety ref-
erences must be stringently observed!
NOTICE
!
!
Safety reference to avoid situations which may
result in damage to a device or its equipment.
CAUTION
Safety reference to avoid a potentially hazard-
ous situation which may result in minor or mod-
erate injury.
WARNING
Safety reference to avoid a potentially hazard-
ous situation which could result in death or seri-
ous injury.
DANGER
Safety reference to avoid an imminently hazard-
ous situation which may result in death or seri-
ous injury.
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