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5.4.2
CM-SW-01
Connection positions
1
High pressure connection (HP)
Standard for all CSW105 compressors
2
Additional high pressure connection (HP)
The compressor module integrates the entire electronic
2a
Connection for high pressure transmitter
periphery of the compressor: It allows monitoring the
(HP)
essential operating parameters of the compressor: mo-
CS.105: connected to the compressor
tor and discharge gas temperature, phase and rotation
module
direction monitoring, oil supply and application limits
3
Low pressure connection (LP)
and thus protects the compressor from operation under
critical conditions. For further information, see Tech-
3a
Connection for low pressure transmitter
nical Information ST-150.
(LP)
CS.105: connected to the compressor
NOTICE
module
!
!
The compressor module may be damaged or
4
Oil sight glass
fail!
5
Oil valve for maintenance (standard) / con-
Never apply any voltage to the terminals of CN7
nection for oil equalisation (parallel opera-
to CN12 – not even for test purposes!
tion)
The voltage applied to the terminals of CN13
6
Oil drain plug (motor body)
must not exceed 10 V!
The voltage applied to terminal 3 of CN14 must
7
Connection for electro-mechanical oil level
not exceed 24 V! Do no apply voltage to the
switch for the replacement of CSH.1 with
other terminals!
CSH.3
8
Connection for opto-electronic oil level
The following components are completely installed and
switch (OLC-D1-S)
wired in the state of delivery:
CS.105: connected to the compressor
• Slider position indicator.
module
9
Oil heater with heater sleeve (standard)
• Oil monitoring (OLC-D1).
CS.105: connected to the compressor
• Solenoid valves for capacity control and V
module
• Discharge gas temperature sensor.
10
Oil pressure connection
11
Connections for external oil cooler (op-
• Low pressure and high pressure transmitter.
tional adapter)
Modification to these components or their wiring is not
11a
Outlet to the oil cooler
required and should not be done without consulting
11b
Inlet/return from the oil cooler
BITZER.
12
Oil temperature sensor
The following components are not installed and wired in
CS.105: connected to the compressor
the state of delivery and need to be connected:
module
• Motor temperature monitoring (PTC sensor in motor
13
Connection for economiser (ECO, optional
winding).
shut-off valve, CSH65 and CSH75 with
pulsation muffler)
• Phase monitoring (in case of a phase failure or inad-
missibly high phase asymmetry).
14
Threaded bore for pipe fixture for ECO or
LI line
The compressor module internally supplies voltage to
the peripheral devices (solenoid valves, oil monitoring
15
Connection for liquid injection (LI, optional
shut-off valve)
device and slider position indicator) and to the terminal
strips CN7 to CN12.
16
Earth screw for housing
Please refer to the Technical Information ST-150 for in-
17
Connection for oil and gas return (for sys-
formation on all connections.
tems with flooded evaporator, optional ad-
apter)
18
Oil filter (maintenance connection)
21
Oil injection valve (internal)
22
Compressor module
SB-170-9
SB-170-9
SB-170-9 RUS
5.4.3
SE-i1
Connection positions
This protection device with extended monitoring func-
23
tions can be used as an option for all HS.53 .. HS.85
SL
compressors and CSH and CSW compressors.
DL
Monitoring functions:
Tab. 8: Connection positions
• Temperature monitoring.
Dimensions (if specified) may have tolerances accord-
• Monitoring of the PTC control circuit to detect any
ing to EN ISO 13920-B.
short-circuit or line break/sensor failure.
The legend applies to all CS. compressors and con-
• Rotation direction monitoring.
tains connection positions that do not exist in every
compressor series.
• Monitoring of phase failure and asymmetry.
• Monitoring of the maximum cycling rate.
For further information, see Technical Information
5 Electrical connection
CT-110.
Compressors and electrical equipment comply with the
EU Low Voltage Directive 2014/35/EU.
5.4.4
SE-E2
Connect mains cables, protective earth conductors and
Optional protection device for operation with frequency
bridges (if needed) as specified on the labels in the ter-
inverter and soft starter (for a ramp time shorter than
minal box. Observe EN60204-1, the safety standard
1 s).
series IEC60364 and national safety regulations.
• Dimensions and integration in the control identical to
SE-E1.
NOTICE
!
!
Risk of short-circuit due to condensation water
• Suitable for all CS. compressors.
in the terminal box!
• Monitoring functions are basically identical to those
Use only standardised cable bushings.
of SE-E1. However, the SE-E2 monitors phase fail-
When mounting, pay attention to proper sealing.
.
ure during the entire running time of the compressor.
i
Additionally earthing the compressor housing
For further information, see Technical Information
ST-122.
DANGER
High electrostatic discharge voltage possible.
5.4.5
Monitoring of the oil circuit
Risk of electric shock!
Also earth the compressor housing!
• For short circuits without liquid injection (LI) for addi-
tional cooling and for small system volume and small
refrigerant charge: Indirect monitoring with oil tem-
perature sensor (standard)
Connection, see position 16 in the dimensional draw-
ings.
NOTICE
!
!
Lack of oil leads to a too high increase in tem-
5.1 Mains connections
perature.
Risk of damage to the compressor!
When dimensioning motor contactors, feed lines and
fuses:
• For circuits with liquid injection (LI) for additional
• Use the maximum operating current or maximum
cooling and / or for great system volume as well as
power consumption of the motor as a basis.
parallel compounding: Monitor oil level directly with
opto-electronic oil level monitoring (option), see
• Select the contacts according to the operational cat-
chapter Opto-electronic oil level monitoring OLC-D1-
egory AC3.
S, page 26. The connection is on the compressor
• Set the thermal overload relays to the maximum op-
housing, see chapter Connections and dimensional
erating current of the compressor.
drawings, page 14, position 8.
Slider position indicator
Suction gas line
Discharge gas line
25
23
23
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