Atlas Copco ZR-55, Instruction Book

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Step Action
1 Press the test button on top of the electronic water drains while the compressor is running
loaded.
2 Press stop button (1): the compressor will stop and LED (2) will go out.
3 Close the air outlet valve.
4 To stop the compressor immediately, press emergency stop button (S2).
5 Close the cooling water inlet valve.
6 If the compressor is installed in a room where freezing temperatures are expected, drain
the cooling system completely:
• By opening the main drain valves in the water inlet and outlet pipes (customer's
installation).
• By removing drain plug (1) underneath the LP compressor element (El).
•
By removing drain plug (1) underneath the HP compressor element (Eh).
• By removing drain plug (DP1) on the oil cooler.
• By removing drain plugs (DP2 and DP3) underneath the cooler block (1).
5.7 Taking out of operation
Procedure
Step Action
1 Close the air outlet valve and stop the compressor.
2 Switch off the voltage.
Disconnect the compressor from the mains.
3 Shut off and depressurise the part of the air net which is connected to the outlet valve.
Disconnect the compressor air outlet pipe from the air net.
4 Drain oil and condensate circuits.
5 Disconnect the compressor condensate piping from the condensate drain net.
6 Drain the cooling water circuit and disconnect the cooling water pipes from the compressor.
Instruction book
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