2920 1190 05
24
Industrial Air Division
Instruction book
3.5 Stopping (Fig. 7a)
1. Press stop button O (9). LED (1) goes out. The compressor
stops and the message Programmed stop appears on the
screen. Five seconds later, the message changes from
Programmed stop to Compressor stopped
2. To stop the compressor in case of emergency, switch off
isolator switch (S0-Figs. 1 and 3a).
3. Close air outlet valve (AV-Fig. 1) and switch off the voltage.
4. Open condensate drain valve (Dm-Fig. 5).
5. On water-cooled compressors, close the cooling water
inlet valve (customer's installation). If freezing
temperatures can be expected, drain the cooling system
completely.
3.6 Taking out of operation
At the end of the life cycle of the compressor, proceed as
follows:
1. Stop the compressor and close the air outlet valve.
2. Switch off the voltage and disconnect the compressor from
the mains.
3. Wait until the compressor has depressurized. Unscrew plug
(FC-Figs. 12) only one turn to permit any pressure in the
system to escape. Open drain valve (Dm-Fig. 5).
4. Shut off and depressurize the part of the air net which is
connected to the outlet valve. Disconnect the compressor
air outlet pipe from the air net.
5. Isolate the compressor water system (only on water-cooled
compressors) from the cooling water net.
6. Drain the oil, water and condensate circuits.
7. Disconnect the compressor condensate piping from the
condensate drain net.
4 Maintenance
Attention: Before starting any maintenance, press stop button
O (9-Fig. 7a), switch off the isolator switch (S0-Figs. 1 and
3a), close air outlet valve (AV-Fig. 1), open manual drain (Dm-
Fig. 5) and switch off the voltage.
The air outlet valve can be locked as follows:
-
Close the valve.
-
Remove the bolt fixing the handle to the valve.
-
Lift the handle and turn it until the slot fits over the blocking
edge.
-
Fix the handle to the valve using the special bolt and wrench
delivered loose with the compressor.
Mechanical maintenance
Open drain valve (Dm-Fig. 5) and wait for at least 2 minutes
(time needed for the compressor to depressurize) before
starting maintenance.
Electrical maintenance
Wait for at least 6 minutes before starting maintenance as
hazardous high voltage remains on the condensers of the
start and speed regulation unit for 6 minutes after switching
off the voltage.
Apply all relevant safety precautions, including those mentioned
in this book.
