Fig. 15 Compressed air connection
1
Compressed air connection with user's shut-off valve
2
Compressed air connection with user's shut-off valve:
Option F1, F2
WARNING
Serious injury or death can result from loosening or opening components under pressure.
➤ Vent all pressurized components and chambers completely.
➤ Make the compressed air connection with an axial compensator or hose.
6.4 Making the Power Supply Connection
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 or example) and in
national accident prevention regulations. In addition, the regulations of the local electricity supplier
must be observed.
3. Test the overload protection cut-out to ensure that the time it takes to disconnect in response 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.
DANGER
Danger of fatal injury from electric shock!
➤ Switch off and lock out the supply disconnecting device and check that no voltage is present.
7. Connect the power supply.
Further information The electrical diagram 13.4 contains further specifications for electrical connection.
6
Installation
6.4
Making the Power Supply Connection
Number: 9_6945 01USE
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
35
