The machine can be set up to one of the following supply voltages:
■ 208V
■ 230V
■ 460V
Precondition The power supply disconnecting device is switched off.
The disconnecting device is locked in the off position.
A check has been made to ensure no voltage is present.
1. Have the electrical connections carried out by authorized personnel only.
2. Carry out protection measures as stipulated in relevant regulations (IEC 364 for example) and
in national accident prevention regulations. In addition, the regulations of the local electricity
supplier must be observed.
3. Test the overcurrent protection cut-out to ensure that the time it takes to disconnect in re‐
sponse to a fault is within the permitted limit.
4. Use supply conductors and fuses in accordance with local regulations.
5. The user must provide the machine with a lockable supply disconnecting device.
This could be, for example, a switch-disconnector with fuses. If a circuit breaker is used it must
be suitable for the motor starting characteristics.
6. Check that the correct taps on the control voltage transformer are connected according to the
supply voltage.
If this is not correct, change the connection to suit the power supply voltage.
7.
Danger of fatal injury from electric shock!
➤ Switch off and lock out the supply disconnecting device and check that no voltage is
present.
8. If necessary: Set up the machine for the correct power supply voltage as described in chap‐
9. Connect the power supply.
Further information The electrical diagram 13.3 contains further specifications for electrical connection.
6.6.1 Changing main voltage connections
Machine set up for [V]
208
230
460
Machine may be modified
[V]
230
208
208
460
460
230
Tab. 33 Voltage selection
The following parts have to be considered for making the change:
■ Motor connection terminals in the control cabinet
■ Drive motor overload protection relay
■ Control transformer
■ Transformer for the refrigerated dryer (only if present).
Material The required jumpers (also known as ’bridges’ or ’links’) are provided in the control cabinet.
Precondition A check has been made to ensure no voltage is present.
6
Installation
6.6
Making the Power Supply Connection
42
Operator Manual Screw Compressor
AIRTOWER 3C–7.5C Tri-Voltage
9_6917 34 USE
Содержание AIRTOWER 3C
Страница 2: ...Original instructions KKW SSXC 2 14 en Z1 SBA SCHRAUBEN TRI VOLTAGE AC SCB 20160524 092822...
Страница 6: ...Contents iv Operator Manual Screw Compressor AIRTOWER 3C 7 5C Tri Voltage 9_6917 34 USE...
Страница 8: ...List of Illustrations vi Operator Manual Screw Compressor AIRTOWER 3C 7 5C Tri Voltage 9_6917 34 USE...
Страница 10: ...List of Tables viii Operator Manual Screw Compressor AIRTOWER 3C 7 5C Tri Voltage 9_6917 34 USE...
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