4. Use conductor dimensions and fuse ratings in accordance with local regulations (in Germany
VDE 0100 parts 430 and 523, for example).
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.
Machines with a total power rating of up to 3 kW and rated current of up to 16 amps may be
provided with a simple cable and plug power supply connection.
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.
6. Connect the machine to the power supply.
6.6 Options
The options available for your machine are described below.
6.6.1 Option C5
Oil level monitor
The oil level monitor does not relieve the user of the obligation to visually check the oil level at
regular intervals.
The contact in the oil level monitor is wired at the factory as a normally open contact.
Oil level Electrical contact
rises closes
falls opens
Tab. 25 Oil level monitor connections
6.6.1.1 Oil level monitoring with star-delta starter
The oil level monitor is connected to the control unit and switches the machine off if the level
falls too low.
➤ The machine is switched off by the control unit.
A red lamp in the control unit door is lit up?
Oil level in the compressor block too low.
➤ Switch off the machine at the main switch.
➤ Top up the compressor oil (see chapter 10.9).
6 Installation
6.6 Options
No.: 9_9431_02 E
Service Manual 2-stage piston compressor
EPC
31
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