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The Digital Controller For Large chillers ESIE 05-07

2–144 Part 2 – Functional Description

Screen 3 This screen shows the actual value of the compressor timers:

Remark: Guard timer:

delay timer to prevent compressor from restarting after a shutdown

(default 60s). Only if AREC timer is already on 0s.

Anti recycling timer:

AREC timer is used to limit the starts per hour, means counting after

starting the compressor. For a screw compressor the default value is 600sec (max. 6

starts/hour).

Screen 4 This screen shows the actual value of the compressor timers:

Line n° Display Description

1 COMPRESSOR TIMERS Screen title

2 GRD1: s AREC1: s Guard timer & Anti recycling timer for compressor 1

3 GRD2: s AREC2: s Guard timer & Anti recycling timer for compressor 2

Line n° Display Description

1 COMPRESSOR

TIMERS

Screen title

2.1 START1: Delay timer that shows the remaining time that the unit has

to run in its first capacity step at start up.

2.2 STOP: Delay timer that shows the remaining time that the unit has

to run at 12% capacity before shutting down.

3.1 START2: Delay timer that shows the remaining time that the unit has

to run in its first capacity step at start up.

3.2 STOP Delay timer that shows the remaining time that the unit has

to run at 12% capacity before shutting down.

ESIE05-07.book Page 144 Wednesday, October 11, 2006 10:42 AM