Champion Compressors Ltd. Manual No. 975203 Rev H
6
5.0 GENERAL DESCRIPTION AND OPERATION
5.1 General Description of the Dominator Ci Series
Your new Dominator rotary screw compressor will provide you with product
reliability and greatly reduced maintenance, if maintained and operated in
accordance with this manual.
The protection devices fitted to this compressor are provided to offer safety of
operation. The operator is solely responsible for personal safety at all times.
These devices should not be adjusted except by an authorised Champion
Compressors service agent.
The machines can be adjusted to operate at maximum capacity at pressures
of 780,1000 & 1300 kPa, but are supplied as standard at 780 kPa.
For pressure other than standard, check with Champion Compressors’
Support Division should you wish to vary the operating pressure of your
machine.
As standard, each compressor is mounted on an air receiver. The Ci 40 & 55
is mounted on one 150L air receiver, and the Ci 75 & 110 are mounted on
twin tank 220L air receivers.
Optionally, each model can be accompanied by a clean air package
consisting of a refrigerated dryer and microcoalescing filter. Each model is
also available in a version mounted on rubber feet, for applications where a
receiver already exists. The innovative modular design of the Ci series allows
for easy configuration changes, (See Section 9 for full option descriptions).
The Ci 40 - Ci 75 machines all employ three phase direct-on-line starting
(DOL) via a combination pressure switch / off-auto control / starter and motor
overload. These machines will start and stop automatically depending on
system pressure requirements, while the lever control on the pressure switch
is set to ‘Auto’ mode. The Ci 75 is also supplied with an hour meter indicating
hours of operation for service intervals.
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