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Fig. 11 Water Regulating Valve
2) It may use a fan speed control to adjust the air flow to achieve the specified
CFM. The fan will run from the minimum speed to full speed with the control
knob at the lowest and highest speed position.
To
adjust the minimum speed,
turn control knob to the lowest speed position, then rotate the setting (located
on the side or front) clockwise to decrease the minimum speed or counter-
clockwise to increase the minimum speed. The minimum speed should be
adjusted until it supplies the required CFM.
Fig. 12 Fan Speed Control
3) The subcooling at the condensing unit shall be around 10°F. The charge may
be complete when there are no more bubbles forming in the liquid indicator.
4) Head pressure is maintained constant but will vary with the water outlet
temperature: 120 ~ 190 psig at the water outlet temperature 95 ~ 120 °F.
5) The evaporator’s constant pressure expansion valve is set around 30 ~ 35
psig (35 ~ 40°F) at factory. This pressure setting gives a dew point to
maintain the proper humidity for storing wine.
6) The temperature split across the evaporator shall be 8 ~ 10°F at 55°F wine
cellar temperature.
7) Again, you must verify if the superheat at the evaporator unit is around 9 ~
18°F at 55 °F wine cellar temperature under high ~ low water temperatures.
