ECKELMANN UA 300 D - Continuous Running Monitoring; Two Temperature Zones

Function of UA 300 D
13
E 2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON +49(0)611 7103-0 | FAX 49(0)611 7103-133 | eckelmann.de
Version 2.03 27. Juni 2008
In the interests of compatibility with UA 300 coldroom controllers, it must be remembered that the
UR 141 does not have a heating circuit/counter circuit.
3.2.2.10 Continuous running monitoring
Controller type: UA 111 X and UA 111 XP
Continuous running of refrigerated cases, e.g. in aggravated ambient conditions, has negative effects especially
with multidecks. It results in icing of the evaporator and reduced air curtain cooling. Run time limiting provides
for automatic forced shutdown of cooling as a means of preventing icing. As a result, the duration of cooling at
any one time is limited.
Duration of forced shutdown is adjustable. Commencement of forced shutdown is predefined. When necessary,
forced shutdown always takes place 1.5 hours after commencement of defrosting and after each additional hour.
The following condition also applies:
If both compressors have been shut down, continuous run monitoring is deactivated in this zone for one cycle
(1.5 or 1 h).
When forced shutdown is active, it will be terminated before the set duration elapses if temperature
rises 4K on supply air sensor.
3.2.2.11 Two temperature zones
Controller type: UA 111 X and UA 111 XP
The controller allows of controlling one refrigerated display case in single−zone operation (maximum eight add−
on cases/supply air sensors) or two refrigerated display cases with two temperature zones and maximum seven
add−on cases/supply air sensors in the first zone and one case in the second zone.
Controller type: UR 141
With coldrooms, a LT coldroom is always controlled with the first zone and a NT coldroom is always controlled
with the second zone.
CAN disabling of refrigeration points by the compressor pack controller is not available on the
UA 300 D.