Carrier 19XR,XRV Hermetic Centrifugal Liquid Chillers - Manual (Page 27)

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Table 2 — CVC/ICVC Display Data (cont)
EXAMPLE 11 — OVERRIDE DISPLAY SCREEN
To access this display from the CVC/ICVC default screen:
1. Press .
2. Press .
3. Scroll down to highlight .
4. Press .
5. Scroll down to highlight
.
6. Press .
NOTE: All variables with CAPITAL LETTER point names are available for CCN read operation; forcing shall not be supported on maintenance
screens.
EXAMPLE 12 — LL_MAINT DISPLAY SCREEN
To access this display from the CVC/ICVC default screen:
1. Press .
2. Press .
3. Scroll down to highlight .
4. Press .
5. Scroll down to highlight
6. Press .
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.
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 ^F SUPRHEAT
Superheat Required 6-99 ^F SUPR_REQ
Condenser Refrig Temp –40-245 DEG F CRT
DESCRIPTION STATUS UNITS POINT
LeadLag Control
LEADLAG: 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 ^F 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 SPARE_1
Spare Temperature 2 –40-245 DEG F SPARE_2
MENU
SERVICE
CONTROL ALGORITHM STATUS
SELECT
OVERRIDE
SELECT
MENU
SERVICE
CONTROL ALGORITHM STATUS
SELECT
LL_MAINT.
SELECT