Vinotemp WINE-MATE VINO-1500SSL, Installation & Operation Manual

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3) Both discharge and suction valves must be in the middle positions during
evacuating and charging.
4) Charge the system after pipe brazing, leak testing and evacuating. Liquid
must always be charged into the hide side.
5) 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.
6) Head pressure range: 125 ~ 150 psig at 70 ~ 90
°
F condensing unit
ambient temperature.
7) 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 humidity for storing wine.
8) The temperature split across the evaporator shall be 8 ~ 10
°
F at 55
°
F
wine room temperature.
9) Again, must verify if the superheat at the evaporator unit is around 9 ~
18
°
F at 50 ~ 65
°
F wine room temperature with a normal condensing unit
ambient temperature.
10) 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.
11) If the superheat is low, then decrease the evaporator suction pressure by
turning the hex nut (5/16”) counter-clockwise.
12) Both discharge and suction valves must be in the back positions before
disconnecting evacuating and pressure gauges.
Fig. 10 Expansion Valve
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