Champion Compressors Ltd. Manual No. 975203 Rev H
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‘Compressor A or Compressor B’ - Set the “A / B / AB” selector switch to
either ‘A’ or ‘B’ to run one compressor only. The other compressor will not
run, it can be switched to run in the event of the primary compressor being out
of service, i.e. a true ‘Duty / Standby’ application.
‘Compressor A and
Compressor B’ - Set the “A / B / AB” selector switch to
‘AB’ to supply power to both compressor units. The compressors will now run
in Lead / Lag mode, with the ‘Lead A / Lead B’ selector switch determining
which compressor will supply the base air supply for the demand. As stated
above, the Lead and Lag functions should be alternated between the two units
by regularly reversing the selector switches on a periodic (daily or weekly)
basis.
Note : The control box does not have the facility to set both units to Lead or
both to Lag. This configuration is neither useful or advisable.
‘Local or Remote Control’ - Set the “LOCAL / REM” Selector switch for each
compressor unit to start or stop the machine either locally or at a remote
location. (Refer Electrical Circuit Diagram at rear of manual).
The “EMERGENCY STOP” button will isolate power from both compressors
irrespective of the control mode selected.
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