Start-Up, Operation, and Maintenance Instructions

CVC/ICVC Operation and Menus (Fig. 14-20)
GENERAL
The CVC/ICVC display automatically reverts to the
default screen after 15 minutes if no softkey activity
takes place and if the chiller is not in the pumpdown
mode (Fig. 14).
If a screen other than the default screen is displayed on
the CVC/ICVC, the name of that screen is in the upper
right corner (Fig. 15).
The CVC/ICVC may be set to display either English or
SI units. Use the CVC/ICVC configuration screen
(accessed from the Service menu) to change the units.
See the Service Operation section, page 45.
Local Operation — The PIC II can be placed in local
operating mode by pressing the LOCAL softkey. The
PIC II then accepts commands from the CVC/ICVC only
and uses the Local Time Schedule to determine chiller
start and stop times.
CCN Operation — The PIC II can be placed in the CCN
operating mode by pressing the CCN softkey. The PIC
II then accepts modifications from any CCN interface or
module (with the proper authority), as well as from the
CVC/ICVC. The PIC II uses the CCN time schedule to
determine start and stop times.
ALARMS AND ALERTS — An alarm shuts down the compressor.
An alert does not shut down the compressor, but it notifies
the operator that an unusual condition has occurred. An
alarm (*) or alert (!) is indicated on the STATUS screens on the
far right field of the CVC/ICVC display screen.
Alarms are indicated when the control center alarm light (!)
flashes. The primary alarm message is displayed on the default
screen. An additional, secondary message and troubleshooting
information are sent to the ALARM HISTORY table.
When an alarm is detected, the CVC/ICVC default screen
will freeze (stop updating) at the time of alarm. The freeze enables
the operator to view the chiller conditions at the time of
alarm. The STATUS tables will show the updated information.
Once all alarms have been cleared (by pressing the
RESET
softkey), the default CVC/ICVC screen will return to normal
operation.
CVC/ICVC MENU ITEMS — To perform any of the operations
described below, the PIC II must be powered up and have
successfully completed its self test. The self test takes place automatically,
after power-up.
Press the MENU softkey to view the list of menu structures:
STATUS , SCHEDULE , SETPOINT , and
SERVICE .
The STATUS menu allows viewing and limited calibration
or modification of control points and sensors, relays
and contacts, and the options board.
The SCHEDULE menu allows viewing and modification
of the local and CCN time schedules and Ice Build time
schedules.
The SETPOINT menu allows set point adjustments, such
as the entering chilled water and leaving chilled water set
points.
The SERVICE menu can be used to view or modify
information on the Alarm History, Control Test, Control
Algorithm Status, Equipment Configuration, ISM Starter
Configuration data, Equipment Service, Time and Date,
Attach to Network Device, Log Out of Network Device,
and CVC/ICVC Configuration screens.
15
For more PRIMARY information STATUS on the COMPRESSOR menu structures, DATE refer TIMEto
Fig. 17. MESSAGE
ON TIME
SECONDARY
STATUS
MESSAGE
ALARM LIGHT
(ILLUMINATED
WHEN POWER ON)
BLINKS CONTINUOUSLY
ON FOR AN ALARM
BLINKS ONCE TO
CONFIRM A STOP
STOP BUTTON
HOLD FOR ONE
SECOND TO STOP
RUNNING TEMP CONTROL
LEAVING CHILLED WATER
SOFT KEYS
01-01-95 11:48
28.8 HOURS
CHW IN CHW OUT EVAP REF
55.1 44.1 40.7
85.0 95.0 98.1
21.8 132.9 93
CDW IN CDW OUT COND REF
OIL PRESS OIL TEMP AMPS %
CCN LOCAL RESET MENU
EACH KEY'S FUNCTION IS
DEFINED BY THE MENU DESCRIPTION
ON MENU LINE ABOVE
Fig. 14 — CVC/ICVC Default Screen
19XR_II SERVICE
ALARM HISTORY
CONTROL TEST
CONTROL ALGORITHM STATUS
EQUIPMENT CONFIGURATION
ISM (STARTER) CONFIGURATION DATA
EQUIPMENT SERVICE
TIME AND DATE
ATTACH TO NETWORK DEVICE
LOG OUT OF DEVICE
CVC CONFIGURATION
Fig. 15 — CVC/ICVC Service Screen
MENU
LINE
Press the softkey that corresponds to the menu structure to
be viewed: STATUS SCHEDULE , SETPOINT , or
SERVICE . To view or change parameters within any of these
menu structures, use the NEXT and PREVIOUS softkeys
to scroll down to the desired item or table. Use the SELECT
softkey to select that item. The softkey choices that then appear
depend on the selected table or menu. The softkey choices and
their functions are described below.
BASIC CVC/ICVC OPERATIONS (Using the Softkeys)
— To perform any of the operations described below,
the PIC II must be powered up and have successfully completed
its self test.