Control Algorithms Checkout Procedure - Carrier 17/19EX Start-Up, Operation And Maintenance Instructions Manual

Control Algorithms Checkout Procedure

In the LID Service menu, one of the tables is Control Algorithm Status. This table contains 6
tables that may be viewed in order to see how the particular control algorithm is operating.
MAINT01 Capacity Control
MAINT02 Override Status
MAINT03
Surge/HGBP
Status
MAINT04
LEAD/LAG Status
OCCDEFM
Time Schedules
Status
WSMDEFME Water System
Manager Status
These maintenance tables are very useful in determining guide vane position, reaction from
load changes, control point overrides, hot gas bypass reaction, surge prevention, etc.
This table shows all values that are used to calculate the
chilled water/brine control point.
Details of all chilled water control override values are
viewed here.
The surge and hot gas bypass control algorithm status is
viewed from this screen. All values dealing with this con-
trol are displayed.
This screen indicates LEAD/LAG operation status.
The Local and CCN occupied schedules are displayed
here in a manner that allows the operator to quickly
determine whether the schedule is in the OCCUPIED
mode or not.
The water system manager is a CCN module which can
turn on the chiller and change the chilled water control
point. This screen indicates the status of this system.