90
APPENDIX A — PIC 5 SCREEN AND TABLE STRUCTURE (cont)
ISM Calibration — J8B 4 to 20mA Output
LEGEND *Default value is shown only if configurable in this table.
ISM Calibration — J6 0-10V Input
LEGEND *Default value is shown only if configurable in this table.
Pumpdown/Lockout (Screen 1)
Navigation: MAIN MENU MAINTENANCE MENU PUMPDOWN/LOCKOUT
PUMPDOWN — The control shall support the use of an
external means to pump the refrigerant from the evaporator to
the condenser for service purposes.
Upon entering Pumpdown, the following message is
displayed:
Press OK to Start Pumpdown?
If the operator selects the OK key, chilled water pump and
condenser water pump shall be turned on and the following
message is displayed:
Water Flow Verifying...
If both flows are not confirmed before the WATER FLOW
VERIFY TIME, then both pumps shall be de-energized and ei-
ther, or both, of the following messages will be displayed:
Water Flow Verification Failed
At this point, EXIT will be the only course of action.
If both flows are confirmed, the following message will be
displayed with the OK and Cancel soft key:
Continue?
When the operator confirms flow by pressing the OK soft
key the following message will be displayed:
Please Remove Refrigerant. Press OK if Completed.
After operator removes refrigerant and then selects the OK
soft key, the following message will be displayed:
Chiller Lockout in Effect
Once Lockout is in effect, a Startup will not be allowed until
a Terminate Lockout (next section) is performed. The follow-
ing message “Chiller Start or in Quick Test, Pumpdown/Lock-
out Denied” will be displayed.
The Hot Gas Bypass Relay shall be set to OFF to prevent it
from being energized until Lockout is terminated. The only op-
tion the user has at this time is to exit Pumpdown.
TERMINATE LOCKOUT — Upon entering Terminate
Lockout, the operator is prompted by the following message:
Chiller Lockout in Effect
Upon selecting the “End Lockout” key, the following mes-
sage will be displayed:
Press OK to Terminate Lockout?
The CHILLED WATER PUMP and CONDENSER WA-
TER PUMP shall be energized and water flows will be veri-
fied. And then The “Continue?” text will be displayed.
Operator should manually check the water flows. If op-
erator presses the “Exit” button, the following description
will be displayed.
Water Flow Verification Failed
At this point, EXIT will be the only course of action.
If OK button is pressed, the following message will be
displayed:
Please Add Refrigerant. Press OK if Completed.
After adding refrigerant to chiller, the operator shall select
the OK soft key to continue. Upon doing so, the operator is fur-
ther prompted as follows:
Chiller Lockout Terminated
The operator can only exit Terminate Lockout at this point.
Startup is once again allowed by the control and the Hot Gas
Bypass Relay shall be enabled to be turned ON.
CCN TABLE NAME: ISM_CAL1
PIC 5 PATH: Main Menu Maintenance Menu ISM Calibration J8B 4-20mA Output
LINE PIC 5 DESCRIPTION CCN NAME RANGE
DEFAULT
VALUE*
UNIT READ/WRITE
1 Calibration Enable cal_en DSABLE/ENABLE DSABLE RW
2 ISM Output mA ism_ma 4 to 20 0 mA RW
3 ISM Output Percent ismo_per 0 to 100 0 % RO
4 VFD Reading mA vfd_ma 4 to 20 0 mA RW
5 VFD Reading Percent vfdi_per 0 to 100 0 % RO
6 Calibration Factor cal_fact 0 to 2000 0 RO
7 Calibration Completed cal_done NO/YES NO RO
RW — Read/Write
CCN TABLE NAME: ISM_CAL2
PIC 5 PATH: Main Menu Maintenance Menu ISM Calibration J6 0-10V Input
LINE PIC 5 DESCRIPTION CCN NAME RANGE
DEFAULT
VALUE*
UNIT READ/WRITE
1 Calibration Enable cal_en DSABLE/ENABLE DSABLE RW
2 VFD Output Voltage vfd_v 0 to 10 0 Volts RW
3 VFD Output Percent vfdo_per 0 to 100 0 % RO
4 ISM Reading Voltage ism_v 0 to 10 0 Volts RW
5 ISM Reading Percent ismi_per 0 to 100 0 % RO
6 Calibration Factor cal_fact 800 to 1200 1000 RO
7 Calibration Completed cal_done NO/YES NO RO
RW — Read/Write
To Next Page
Loading...
