Start-Up/Recyc le Operation
If the machine is not running when ice build activates, then the PIC checks the following
parameters, based on the ICE B UILD TERMINATIO N value, to avo id starting the compressor
unnecessarily:
if ICE BUILD TERMINATION is set to the TEMPERATURE ONLY OPTION and the
ENTERING CHILLED WAT ER temperature is less than or equal to the ICE BUILD
SETPOINT;
if ICE BUILD TERMINATION is set to the CONTACTS ONLY OPTION and the
remote contacts are open;
if the ICE BUILD TERMINATION is set to the BOTH (temperature and contacts)
option and ENTERING CH IL LED WATER temperature is less than or equal to the
ICE BUILD SETPO INT and remote contacts are open.
The ICE BUILD RECYCLE OPT IO N de termines whether or not the PIC will go into a
RECYCLE mode. If the ICE BUILD RECYCLE OPTION is set to DSABLE (disable) when the
ice build termi nates, the PIC will revert b ack to normal t emperature contr ol duty. If th e ICE
BUILD RECYCLE OP TION is set to ENA BLE, when ice build t erminates, the PIC will go into an
ICE BUILD RECYCLE mode and the chilled wat er pump relay will rema in energized to keep the
chilled water flowing. If the entering CHILLED WATER/BRINE TEMPERATURE increases
above the ICE BUILD SETPO I NT plus the RECYCLE DELTA T value, the compressor wi ll
restart and control the CHILLED WATER/ BRINE TEMPERATURE to the ICE BUILD
SETPOINT.