MICRO-AIR Artic Air 24 Guía de instalación descargar pdf (Pagina 54)

MHPS Superheat

Please view the tube visible from the front of the condensing unit running from the base to the

receiver/suction accumulator/subcooler tank. This is visible just above the left hand rotolock

valve in the picture below. Check to see if frost persists on this tube while the compressor is

running to cool the freezer during the second half of the pulldown cycle. (Brief frosting is O.K.)

Although the expansion valves have been pre-set at the factory, there is a possibility that on

some systems with freezers that the adjustment may not be optimum.

If frost builds up on the tube, you will want to increase superheat by turning the valve stem on the

expansion valve clockwise. If you have two plates in your box, turn each valve clockwise by an

equal amount. Try starting with 1/4 turn.

Use a 4mm or 5/32 in hex wrench to remove the nut and adjust the adjustment nut

Superheat is a measure of how much refrigerant the expansion valve is metering into the plate.

More superheat reduces the amount of refrigerant. Superheat is increased by turning the valve

stem in a clockwise direction.

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MICRO-AIR Artic Air 24 Guía de instalación Pagina 54