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5.4.2
CM-SW-01
7 Operation
Standard for all CSW105 compressors
7.1 Regular tests
The compressor module integrates the entire electronic
Check the system at regular intervals according to na-
periphery of the compressor: It allows monitoring the
tional regulations. Check the following points:
essential operating parameters of the compressor: mo-
tor and discharge gas temperature, phase and rotation
• Operating data, see chapter Compressor start, page
direction monitoring, oil supply and application limits
28.
and thus protects the compressor from operation under
• Oil supply, see chapter Compressor start, page 28.
critical conditions. For further information, see Tech-
nical Information ST-150.
• Safety and protection devices and all components
for compressor monitoring (check valves, discharge
NOTICE
gas temperature sensors, differential oil pressure
!
!
The compressor module may be damaged or
switches, pressure limiters, etc.).
fail!
• Tight seat of electrical cable connections and
Never apply any voltage to the terminals of CN7
screwed joints.
to CN12 – not even for test purposes!
The voltage applied to the terminals of CN13
• Screw tightening torques (see SW-100).
must not exceed 10 V!
• Refrigerant charge.
The voltage applied to terminal 3 of CN14 must
not exceed 24 V! Do no apply voltage to the
• Tightness.
other terminals!
• Prepare data protocol.
The following components are completely installed and
wired in the state of delivery:
7.2 Locking the protection and monitoring devices
• Slider position indicator.
The compressors are equipped with electronic protec-
tion and monitoring devices, triggering a lock-out in
• Oil monitoring (OLC-D1).
case of overload or inadmissible operating conditions.
• Solenoid valves for capacity control and V
Determine and remove the cause before performing a
• Discharge gas temperature sensor.
reset!
• Low pressure and high pressure transmitter.
Modification to these components or their wiring is not
required and should not be done without consulting
8 Maintenance
BITZER.
Observe the manufacturer's documentation of the com-
The following components are not installed and wired in
ponents used!
the state of delivery and need to be connected:
• Motor temperature monitoring (PTC sensor in motor
8.1 Oil change
winding).
NOTICE
• Phase monitoring (in case of a phase failure or inad-
!
!
Damage to the compressor caused by degraded
missibly high phase asymmetry).
ester oil.
The compressor module internally supplies voltage to
Moisture is chemically bound to the ester oil and
the peripheral devices (solenoid valves, oil monitoring
cannot be removed by evacuation.
device and slider position indicator) and to the terminal
Proceed with extreme care:
strips CN7 to CN12.
Any penetration of air into the system and oil
drum must be avoided under all circumstances.
Please refer to the Technical Information ST-150 for in-
Use only oil drums in their original unopened
formation on all connections.
state!
SB-170-9
SB-170-9
SB-170-9 RUS
5.4.3
SE-i1
The listed oils, (see chapter Application ranges, page
5), are characterised by their high degree of stability.
This protection device with extended monitoring func-
An oil change is generally not required when appropri-
tions can be used as an option for all HS.53 .. HS.85
ate suction-side fine filters are mounted or used. In
compressors and CSH and CSW compressors.
case of compressor or motor damage, it is recommen-
Monitoring functions:
ded performing an acid test. If necessary, carry out
cleaning measures: Mount a bidirectional acid retaining
• Temperature monitoring.
suction line gas filter and change oil. Purge the system
• Monitoring of the PTC control circuit to detect any
on the highest point of the discharge side and collect
short-circuit or line break/sensor failure.
the refrigerant in a recycling cylinder If necessary,
change filter and oil again after several operating hours
• Rotation direction monitoring.
and purge the system.
• Monitoring of phase failure and asymmetry.
Changing the oil
• Monitoring of the maximum cycling rate.
For further information, see Technical Information
WARNING
CT-110.
The compressor is under pressure!
Serious injuries are possible.
Depressurize the compressor!
5.4.4
SE-E2
Wear safety goggles!
Optional protection device for operation with frequency
inverter and soft starter (for a ramp time shorter than
1 s).
• Drain the oil from the compressor and motor hous-
ing. Oil draining positions on the compressor are the
• Dimensions and integration in the control identical to
connection positions 5 and 6, see chapter Connec-
SE-E1.
tions and dimensional drawings, page 14.
• Suitable for all CS. compressors.
• Fill in new oil.
• Monitoring functions are basically identical to those
• Dispose of waste oil properly.
of SE-E1. However, the SE-E2 monitors phase fail-
.
ure during the entire running time of the compressor.
i
8.2 Replace oil filter (CSW105)
For further information, see Technical Information
ST-122.
➙ Prepare a new oil filter.
• Place a flat pan under the oil valve for maintenance
5.4.5
Monitoring of the oil circuit
(5) and the oil filter flange (18).
• For short circuits without liquid injection (LI) for addi-
• Drain oil and dispose of it properly.
tional cooling and for small system volume and small
• Open the flange of the oil filter and remove it by
refrigerant charge: Indirect monitoring with oil tem-
pulling it forward.
perature sensor (standard)
The integrated oil filter is mounted on the rear side of
NOTICE
the flange.
!
!
Lack of oil leads to a too high increase in tem-
• Unscrew the oil filter from the flange.
perature.
Risk of damage to the compressor!
• Mount a new oil filter on the flange.
• Replace the O-ring at the flange.
• For circuits with liquid injection (LI) for additional
cooling and / or for great system volume as well as
• Insert the flange with the new oil filter, the new flat
parallel compounding: Monitor oil level directly with
gasket and the new O-ring.
opto-electronic oil level monitoring (option), see
chapter Opto-electronic oil level monitoring OLC-D1-
S, page 26. The connection is on the compressor
housing, see chapter Connections and dimensional
drawings, page 14, position 8.
25
31
31
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