Installation and operating manual
Cooling controls from Cool Expert have the highest internationally
recognized level of automation. The MIC QKL mini cooling control is the
product of consistent further development of the KÜBATRON QKL 2B/T
multifunction control, which also originated from the innovative genius of
Cool Expert. The MIC QKL mini 2 is the ideal solution for all your needs in
commercial refrigeration. The mini is particularly impressive in its easy
operation and versatility of use in chest refrigerators and freezers as well as
in cold rooms and freezer rooms. The MIC QKL mini 2 is a self-optimizing
control with autoadaptive defrost detection at the best time in terms of
energy. If the line for the temperature sensors is extended, compensation of
the resistance is done automatically by means of the three-wire
measurement technique even over longer distances. All setting and
adjustment work can basically be dispensed with. A refrigeration system
equipped with MIC QKL mini 2 is permanently controlled and monitored by a
knowledge-based algorithm without any interruption. The algorithm detects
changes in the operating conditions and guides the currently most efficient
operating point. The potential energy savings using a MIC QKL mini 2 have
been proven to be at least 20%, compared to state-of-the-art technology.
Room temperature control:
The MIC QKL mini 2 is suitable for control with one or two sensors, depending on
the application. With only one temperature sensor in the cooler block as the sole
reference variable, MIC QKL mini 2 performs the same tasks as its predecessor
KÜBATRON QKL 2 B/T. Dual sensor control, combined with the optional network
module and a recorder, complies with the hygiene regulation for quality assurance
of chilled goods according to HACCP (detection of room temperature using a
proprietary sensor provided for that purpose). The dual sensor control is also
essential in refrigerated cabinets and in the case of recirculating air defrosting.
Air cooler fan management:
Prior to beginning the actual cooling process, the energy stored in the cooling
block (by the formation of frost and ice) is supplied to the cold room by specifically
forerunning the fan. This air cooler fan control patented by Cool Expert also
became known under the name latent heating. Frost and ice formation on the fins
of the air cooler are reduced by the effect of sublimation. The defrosting processes
are, compared to state-of-the-art technology, reduced considerably. Another
benefit of the sublimation effect lies in the fact that the goods that are chilled lose
less moisture. The relative air humidity is increased by at least 10%. In order to
prevent water drops from breaking away, the start of the cooler fan is time-delayed
after each defrosting process.
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Defrost detection:
!Adaptive Dynamic Detection (ADD) The defrost detection takes place at the best
time in terms of energy according to the performance measurement principle.
Two sensors (air inlet and cooler block temperature) are required for ADD. A
defrost process is automatically initiated if the cooler experiences a reduction in
performance of more than 5% due to frost and ice formation.
!Load Integral Detection (LID) Defrost detection takes place here similar to the
ADD procedure described above; however, it takes into account the expected
average humidity level. In the case of the one-sensor control only LID defrost
detection is possible. LID can also be used for the dual sensor control.
Defrost management:
A patented autoadaptive defrost management controls the electric defrost heating,
the recirculating air defrosting and the hot gas defrosting. The defrost end
temperature is calculated autoadaptively. The heat content of the given defrosting
medium is the basis for calculating the defrost end temperature. Drain down time
is mandatory after the defrost process has been completed. The defrost end
temperature can also be set by hand for electric defrosting.
Fault management:
An autoadaptive early warning system monitors the performance of the coolers
and constantly checks the availability of the refrigeration system. A message
follows in the event of a fault. Up to 14 faults and two messages can be
documented in a unique diagnostic system.
Two freely configurable digital inputs can be connected for various tasks:
Adjustable switch-off time and switch-on temperature of the cooling plant when
the door is open, adjustable increase or decrease of the setpoint with or without
defrost suppression, external defrost suppression or external defrost request,
external standby in case of load throw-off, cooling request or if the defrost locking
mechanism is in effect, for example.
Communication:
Optional network module as a communication interface for data transmission in
both directions.
For the benefit of the customer
In harmony with the environment
Temperature control
MIC QKL mini 2
Cool Expert
Entwicklungs GmbH
Besenacker 14
D-35108 Allendorf (Eder)
Phone +49 (0) 6452 9290 0
Fax +49 (0) 6452 9290 290
e-mail info@cool-expert.de
Internet www.cool-expert.de
Management Information Control (MIC)
Cooling system intelligence
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