KAESER KOMPRESSOREN SX, Service Manual, Page: 44 / 122

Fig. 9 Compressed air connection
1
Axial compensator or hose
2
Shut-off valve
WARNING
Serious injury or death can result from loosening or opening components under pressure.
➤ Vent all pressurized components and chambers completely.
1. A shut off valve must be installed by the user in the connection line.
2. Make the compressed air connection with an axial compensator or hose.
6.4 Making the Power Supply Connection
Precondition All three phases of the power supply are isolated,
the disconnect device is locked in the off position,
a check has been made that no voltage is present.
1. Have the power supply connected by authorized installation personnel or an authorized electri‐
cian only.
2. Carry out safety measures as stipulated in relevant regulations (IEC 364, for example) and in
national accident prevention regulations (BGV A3 in Germany). In addition, observe the regula‐
tions of the local electricity supplier.
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. Select supply cable conductor cross-sections and fusing in accordance with local regulations.
5. The user must provide the machine with a lockable power supply disconnecting device.
This could be, for example, a load disconnect switch with fused input. If a circuit breaker is used
it must be suitable for the motor starting characteristics.
6. Check that the tappings on the control voltage transformer are connected according to the supply
voltage.
If not, change the tappings to suit the power supply voltage.
DANGER
Danger of fatal injury from electric shock!
➤ Switch off and lock out the power supply disconnecting device and check that no voltage is
present.
7. Connect the machine to the power supply.
Further information The electrical diagram 13.4 contains further details of the power supply connection.
6 Installation
6.4 Making the Power Supply Connection
34
Service Manual Screw Compressor
SX SIGMA CONTROL BASIC
9_6919 04 E