Table 2 — CVC Display Data (cont)
EXAMPLE 10 — OVERRIDE DISPLAY SCREEN
To access this display from the CVC default screen:
1. Press
MENU
.
2. Press SERVICE .
3. Scroll down to highlight CONTROL ALGORITHM STATUS .
4. Press SELECT .
5. Scroll down to highlight OVERRIDE .
DESCRIPTION
STATUS
UNITS
POINT
Comp Motor Winding Temp
−40-245
DEG F
MTRW
Comp Motor Temp Override
150-200
DEG F
mt
over
Condenser Pressure
0-420
PSI
CRP
Cond Press Override
90-180
PSI
cp
over
Evaporator Refrig Temp
−40-245
DEG F
ERT
Evap Ref Override Temp
2-45
DEG F
rt
over
Comp Discharge Temp
−40-245
DEG F
CMPD
Comp Discharge Alert
125-200
DEG F
cd
alert
Comp Thrust Brg Temp
−40-245
DEG F
MTRB
Comp Thrust Brg Alert
165-185
DEG F
tb
alert
Actual Superheat
−20-99
DEG F
SUPRHEAT
Superheat Required
6-99
^ F
SUPR
REQ
Condenser Refrig Temp
−40-245
^ F
CRT
NOTE: All variables with CAPITAL LETTER point names are available for CCN read operation; forcing shall not be supported on maintenance
screens.
EXAMPLE 11 — LL
MAINT DISPLAY SCREEN
To access this display from the CVC default screen:
1. Press
MENU
.
2. Press SERVICE .
3. Scroll down to highlight CONTROL ALGORITHM STATUS .
4. Press SELECT .
5. Scroll down to highlight LL
MAINT. .
DESCRIPTION
STATUS
UNITS
POINT
Lead Lag Control
LEAD/LAG: Configuration
NOTE 1
leadlag
Current Mode
NOTE 2
llmode
Load Balance Option
0/1
DSABLE/ENABLE
loadbal
LAG Start Time
2-60
MIN
lagstart
LAG Stop Time
2-60
MIN
lagstop
PRESTART FAULT Time
2-30
MIN
preflt
Pulldown: Delta T/Min
x.xx
^ DEG
pull
dt
Satisfied?
0/1
NO/YES
pull
sat
LEAD CHILLER in Control
0/1
NO/YES
leadctrl
LAG CHILLER: Mode
NOTE 3
lagmode
Run Status
NOTE 4
lagstat
Start/Stop
NOTE 5
lag
s
s
Recovery Start Request
0/1
NO/YES
lag
rec
STANDBY CHILLER: Mode
NOTE 3
stdmode
Run Status
NOTE 4
stdstat
Start/Stop
NOTE 5
Std
s
s
Recovery Start Request
0/1
NO/YES
std
rec
Spare Temperature 1
−40-245
DEG F
SPARE1
Spare Temperature 2
−40-245
DEG F
SPARE2
NOTES:
1. DISABLE, LEAD, LAG, STANDBY, INVALID
2. DISABLE, LEAD, LAG, STANDBY, RECOVERY, CONFIG
3. Reset, Off, Local, CCN
4. Timeout, Ready, Recycle, Prestart, Startup Ramping, Running, Demand, Override, Shutdown, Trippout, Pumpdown, Lockout
5. Stop, Start, Retain
6. All variables with CAPITAL LETTER point names are available for CCN read operation; forcing shall not be supported on maintenance screens.
26
Summary of Contents for HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR
Page 13: ...Fig 10 Control Panel Fig 11 Power Panel 13 ...
Page 47: ...Fig 25 19XR Leak Test Procedures 47 ...
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