EC-30C | 1.00.02 +49 2102 935 888 www.mc-techgroup.com 57
11 DCU 1 is turned off. DCU 2 stays at target temperature of -30 °C (~-22 °F).
Now the unit „knows“ how long it takes to cool DCU 1 down to the target
temperature of -30 °C (~-22 °F) with the current load. DCU 1 remains off until
the cooling process starts.
It depends on the required cooling process how long DCU 1 remains off. The
goal is to alternate the deep-cooling units every 3 hours, in order to avoid
freeze up of the unit.
12 DCU 1 cools down until the target temperature of -30 °C (~-22 °F) is
reached. DCU 2 stays at target temperature of -30 °C (~-22 °F).
From this moment on DCU 1 starts cooling, to reach the target temperature of
-30 °C (~-22 °F) in due time and to keep the required 6 hours`s cycle time.
13 DCU 1 reaches the target temperature of -30 °C (~-22 °F). EC-30C switches
the gas flow to DCU 1. DCU 2 turns off for 20 minutes.
From this point on the cooling stages of the EC-30C keep on repeating themselves starting
with stage 4. Unlike the restart phase, stage 6 will take a longer time period during the
operation process.
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