98
Instruction book
9096 3321 00
6.3 Electrical connections
Important remark
11 By-pass system to by-pass the dryer during service operations (available as an
option, consult Atlas Copco).
On water-cooled compressors:
Water flow and pressure to be adjusted depending upon local conditions.
For cooling water quality see section Cooling water requirements.
A water shut-off valve and water drain valve should be installed by the customer in
the compressor water inlet pipe and outlet pipe. If water shut-off valves at the
compressor water inlet and outlet pipe are installed, a safety device with set
pressure according to the maximum cooling water inlet pressure (see section
Reference conditions and limitations) has to be installed between the compressor
water outlet pipe and shut-off valve. When operating the unit, the operator must
ensure that the cooling water system cannot be blocked. The above-mentioned
applies also to the energy recovery cooling water system. Remove the plastic plugs
(if provided) from the compressor water pipes and connect the pipes to the cooling
water circuit.
13 Cooling air grating, dryer
12
To preserve the protection degree of the electric cubicle and to protect its components from dust from
the environment, it is mandatory to use a proper cable gland when connecting the supply cable to the
compressor.
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