Vinotemp WINE-MATE VINO8500SSH - Manual (Page 4)

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• The evaporator’s constant pressure expansion valve is set around 35-
40 ° F at factory. This pressure setting gives a dew point to maintain the
humidity for storing wine.
• The superheat at the evaporator unit shall be around 9-18
° F under low -
high load at 75 ° F ambient temperature.
• If the superheat is high, check the subcooling first to
know if the refrigerant charge is sufficient. If the
charge is not sufficient, add more refrigerant. If the
charge is good, then increase the evaporator suction
pressure by turning the hex nut (5/16”) clockwise.
• If the superheat is low, then decrease the evaporator
suction pressure by turning the hex nut (5/16”)
counter-clockwise.
• If the overall duct length is more or less than 50ft, it
is necessary to check the air flow to meet the
specified CFM. It may use larger or smaller size ducts or fan speed control
to adjust the system refrigeration performance to achieve 8-10
° F
differential between return air and supply air. In order to control fan
speed properly, a minimum speed adjustment is required. Turn main
control knob to lowest speed position, locate and
adjust minimum speed setting (on the side or front)
with screw driver (rotate clockwise to decrease
minimum speed; counter-clockwise to increase
minimum speed). The fan will run from this preset
minimum speed to full speed.
• Suction pressure: 30-35 psig
• Head pressure: 125-150 psig at 70 -90
° F ambient temperatures
The line sizes and refrigerant charges are listed as follows.
MODEL
REFRIGERATION
LINES
LIQUID
LINE
SUCTION
LINE
INSULATED
DUCT
DRAIN
LINE
CHARGE
VINO-
2500SSH
<= 50 FT 1/4" OD 3/8” OD 8” 7/8” OD
R134a/
19 OZ
VINO-
4500SSH
<= 50 FT 1/4" OD 1/2” OD 8” 7/8” OD
R134a/
26 OZ
VINO-
6500SSH
<= 50 FT 1/4" OD 1/2” OD 10” 7/8” OD
R134a/
32 OZ
VINO-
8500SSH
<= 50 FT 3/8" OD 5/8” OD 10” 7/8” OD
R134a/
40 OZ
NOTES:
• THE VALVE CONNECTION SIZES OF CONDENSING UNIT AND THE LINE
CONNECTION SIZES OF EVAPORATOR UNIT ARE NOT NECESSARY
THE SAME AS THE ABOVE LISTED LINE SIZES.
• IF THE CONDENSING UNIT IS INSTALLED ABOVE THE EVAPORATOR
UNIT, USE THE SUCTION LINE ONE LISTED SIZE SMALLER.
• EXPANSION AND SOLENOID VALVES ARE INSTALLED ON LIQUID LINE.