Carrier 17EX Start-Up, Operation And Maintenance Instructions Manual page 30

Externally geared centrifugal liquid chillers
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To access this display from the LID default screen:
1. Press
MENU
.
2. Press SERVICE .
3. Scroll down to highlight CONTROL ALGORITHM STATUS.
4. Press SELECT .
5. Scroll down to highlight MAINT01.
DESCRIPTION
CAPACITY CONTROL
Control Point
Leaving Chilled Water
Entering Chilled Water
Control Point Error
ECW Delta T
ECW Reset
LCW Reset
Total Error + Resets
Guide Vane Delta
Target Guide Vane Pos
Actual Guide Vane Pos
Proportional Inc Band
Proportional Dec Band
Proportional ECW Gain
Water/Brine Deadband
NOTE: Overriding is not supported on this maintenance screen. Active overrides show the associated point in alert (*). Reference point names with
capital letters can be read by CCN and Building Supervisor software.
To access this display from the LID default screen:
1. Press
MENU
.
2. Press SERVICE .
3. Scroll down to highlight CONTROL ALGORITHM STATUS.
4. Press SELECT .
5. Scroll down to highlight MAINT02.
6. Press SELECT .
DESCRIPTION
OVERRIDE/ALERT STATUS
MOTOR WINDING TEMP†
Override Threshold
CONDENSER PRESSURE
Override Threshold
EVAPORATOR REFRIG TEMP
Override Threshold
DISCHARGE TEMPERATURE
Alert Threshold
BEARING TEMPERATURE
Alert Threshold
†Information is applicable to hermetic machines (19EX) only.
NOTE: Overriding is not supported on this maintenance screen. Active overrides show the associated point in alert (*). Reference point names with
capital letters can be read by CCN and Building Supervisor software.
Table 2 — LID Display Data (cont)
EXAMPLE 11 — MAINTENANCE (MAINT01) DISPLAY SCREEN
RANGE/STATUS
10-120 (–12.2-48.9)
–40-245 (–40-118)
–40-245 (–40-118)
–99-99 (–55-55)
–99-99 (–55-55)
–99-99 (–55-55)
–99-99 (–55-55)
–99-99 (–55-55)
–2-2
0-100
0-100
2-10
2-10
1-3
0.5-2 (0.3-1.1)
EXAMPLE 12 — MAINTENANCE (MAINT02) DISPLAY SCREEN
RANGE/STATUS
–40-245 (–40-118)
150-200 (66-93)
–6.7-420 (–42-2896)
90-245 (621-1689)
–40-245 (–40-118)
2-45 (1-7.2)
–40-245 (–40-118)
125-200 (52-93)
–40-245 (–40-118)
175-185 (79-85)
UNITS
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
%
%
%
DEG F (DEG C)
UNITS
DEG F (DEG C)
DEG F (DEG C)
PSI (kPa)
PSI (kPa)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
DEG F (DEG C)
30
REFERENCE POINT NAME
ctrlpt
LCW
ECW
cperr
ecwdt
ecwres
lcwres
error
gvd
GV
TRG
GV
ACT
gv
inc
gv
dec
gv
ecw
cwdb
REFERENCE POINT NAME
MTRW
mt
over
CRP
cp
over
ERT
rt
over
CMPD
cd
alert
MTRB
tb alert

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