 | Controls up to 8 Blast Cells. |
| Uses intermittent cooling technique to reduce fan use, save energy and
reduce demand charges. |
| Operator selects individual cycle time settings. |
| Simple change of blast freezer control parameters. |
| Displays 8 evaporator zone return air temps. |
| Displays 8 evaporator liquid line temps. |
| Displays 8 evaporator air discharge temps. |
| Displays time remaining in each cycle. |
| Operator selects delay time between start of each cell's
cooling to reduce demand. |
| All defrost parameters are password protected, individually selectable for each zone. |
| Defrost start time for each blast cell is determined by air temperature
drop across the coil or amount of time the liquid solenoid is energized
since last defrost or by a manual defrost switch closure. |
| Operator also can select defrost to be automatically performed at the end
of each cycle. |
| Defrost termination time is determined by hot gas exit temp plus variable time delay, backed up
by adjustable maximum time period. |
| Defrost Blackout Table defines time when defrost is not allowed for each
blast cell
on a seven day basis. |
| Logs run time hours for each blast cell . |
| Allows individual time offset of initial cycle zone temp set points. |
| Logs all defrosts. |
| Operator selects number of evaporators defrosting at same time. |
| Defrost control scheme greatly reduces energy usage over standard time-clock systems. |
| Controls liquid solenoid, hot gas solenoid, suction stop valve and bleed valve. |
