ESIE07-05
Functional Control
Part 2 – Functional Description
2–67
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2
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2.15
Compressor Management
Introduction
The compressor sequencing mode determines which circuit starts up first in case of a capacity
demand. It prevents the unit from always starting the same circuit. Also, compressor timers are
implemented to avoid too many compressor starts in 1 hour.
Compressor
sequence
The compressor sequence of starting up can be selected in the user menu.
■
Auto: The selection of the compressor sequence will be done by the controller depending on the
running hours.
■
Manual: The selection of the compressor sequence is fixed according to the entered sequence.
When manual is selected, the following screen will appear.
Compressor timers
The compressor timers are implemented to prevent too many compressor starts.
The time set for the compressor to start is 600 seconds. This is to prevent breakdown of the
compressor.
Compressors
Sequencing
Auto / Manual
Set Compressor Stage
C # 1 1st
C # 3 3rd
C # 2 2nd
C # 4 4th
Min T Between Same
Comp. Starts
Comp. Starts
Min T Between Diff.
600 s
Diff.
120 s
Min Time Comp ON
Min Time Comp OFF
180 s
120 s
ESIE07-05.book Page 67 Friday, December 21, 2007 3:21 PM
