MICRO-AIR Artic Air 24 Installationsanleitung PDF herunterladen (Seite 44)

Once the compressor stops running (and the plate starts thawing out), another measurement

error is introduced. Since we are only able to measure temperature from the outside of the plate,

the surface temperature of the plate will slowly rise during the thawing period even though the

temperature of the core remains constant. This is because the heat entering the plate from the

outside creates a fully melted layer of solution which acts as an insulator to slow heat ingress

into the frozen “core”. The temperature difference (between the exterior surface and the core)

will vary between systems and installations.

Given these measurement variances, it is apparent that the correct compressor “turn on” and

“turn off” temperatures will be some number of degrees above and below the eutectic point of the

holding plate solution. It is also apparent that the precise number of degrees will vary from

system to system and from installation to installation.

Therefore, the purpose of this section is to describe a method which can be used to determine

the exact freeze and thaw points for every system and installation.

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MICRO-AIR Artic Air 24 Installationsanleitung Seite 44