Vinotemp WINE-MATE VINO-6500SSL - Manual (Page 4)

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• 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.
• The temperature split crossing the evaporator shall be 8-10
° F at 55 ° F
wine room temperature.
• Suction pressure: 30-35psig
• 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
DRAIN
LINE
CHARGE
VINO-1500SSL <= 50 FT
1/4"
OD
3/8” OD 1/2” OD
R134a/
15 OZ
VINO-2500SSL <= 50 FT
1/4"
OD
3/8” OD 1/2” OD
R134a/
19 OZ
VINO-4500SSL <= 50 FT
1/4"
OD
1/2” OD 1/2” OD
R134a/
26 OZ
VINO-6500SSL <= 50 FT
1/4"
OD
1/2” OD 1/2” OD
R134a/
32 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.
6. Pressure, Superheat and Subcooling Readings
CAUTION:
THE VALVES MUST BE IN THE MIDDLE POSITIONS TO READ PROPERLY.
Complaint Possible Causes
a. High suction pressure and low head pressure
b. High suction pressure and low head pressure
Low superheat and low subcooling
c. High suction pressure and high head pressure
Low superheat and high subcooling a. Compressor may be bad
b. Expansion valve opened, too
much oil
c. Overcharge