Vinotemp WINE-MATE VINO-2500SSW User manual

VINO1500-2500SSW
Installer’s Instruction
Federal law requires that WINE-MATE split cooling systems be
installed by an EPA certified refrigeration technician.
WINE-MATE split system is shipped as components and is ready for use only
after a certified refrigeration technician has properly installed, evacuated,
charged and tested the system. Proper installation is critical. Vinotemp can only
warrant the quality of the components. The installation and proper operation of
the system must be warranted by the installer. Installation of the system must be
done in accordance with all state and local building and electrical codes.
The condensing unit and evaporator unit are connected by a liquid line and an
insulated suction line that are supplied by the installer. These lines must be
properly sized for the distance between the two units. After the units and the lines
are installed, the system must be pressure tested. If no leaks are found,
evacuate and charge system. Refrigerant amount will vary depending on the
length of line set.
1. Condensing Unit
•Place the condensing units WM150SCU and
250SCU in a properly ventilated location. If it is not,
heat exhausted by the condensing unit will build up
and the cooling system will not operate properly.
•Condensing unit shall be elevated to avoid possible
flooding and shaded from direct sun. It shall not be
exposed to temperatures higher than 110 °F or lower than 50 °F (optional
low ambient kit available).
•Leave minimum 5 feet clearance for the exhaust side and leave minimum
1 foot clearance for the fresh air intake side.

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CAUTION:
DO NOT SWITCH ON THE COMPRESSOR IF THE CONDENSING UNIT IS
EQUIPPED WITH A LOW AMBIENT CONDITION KIT UNTIL THE UNIT HAS
BEEN PLUGGED IN FOR 24 HOURS.
2. Valve Operation (Condensing unit)
BACK POSITION FRONT POSITION MIDDLE POSITION
Fig. 1 ROTALOCK Valve Operation
BACK POSITION FRONT POSITION MIDDLE POSITION
Fig. 2 Base Valve Operation
1 - Process & Manometer; 2 - Receiver/Compressor Suction
3 - Liquid/Suction Line; 4 - Pressure Control
Back Position: Process and manometer port closed for normal operation
Front Position: Connection to liquid or suction line closed
Middle Position: All ports open for evacuation, charge and manometer reading
3. Evaporator Unit
•The WM15-25SFCW evaporator units shall be installed for wall mount with
the air supply on the top and air return on the bottom.
•Supply and return air flow from the evaporator unit shall be unobstructed
for at least 1 foot.

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•There is a gravity drain line and the unit shall be installed level or with a
slight angle toward the drain connection. If rise-up is needed, a
condensation pump must be used.
4. Air Sensor
•The air sensor can be located in the wine room 5 feet above the floor or
the return air area, but not the supply air area or air dead area.
•If the temperature controller is mounted outside the wine room but the air
sensor is located inside the wine room, use 18 gauge wires to extend the
air sensor if needed.
5. Refrigeration Piping, Evacuating, Charging and Starting
CAUTION:
•ALWAYS USE THE SUPERHEAT AND SUBCOOLING, PRESSURE
READINGS TO CHARGE REFRIGERANT PROPERLY, THE LISTED
CHARGES ARE FOR REFERENCE ONLY.
•CHARGE 15% MORE REFRIGERANT IN THE SUMMER IF THE UNIT IS
EQUIPPED WITH A LOW AMBIENT CONDITION KIT.
•The installation order starts from condensing unit (including the receiver,
discharge valve), liquid line filter-drier, moisture-liquid indicator/sight glass,
liquid line, to evaporator unit (including liquid line connection, solenoid
valve, expansion valve, and suction line connection), returning to insulated
suction line, suction valve and then condensing unit.
•Use inverted siphons to prevent liquid from flooding back to the
compressor and aid oil returning to the compressor.
•Charge the system after pipe brazing, leak testing and evacuating.
•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 sight
glass.
•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.

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•It may use 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 the setting (on the side or
front) and adjust minimum speed setting
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 DRAIN LINE CHARGE
VINO-
1500SSW <= 50 FT 1/4" OD 3/8” OD 1/2” OD R134a/ 15 OZ
VINO-
2500SSW <= 50 FT 1/4"
OD 3/8” OD 1/2” OD R134a/
19 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 SPECIFIED 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
d. High to normal suction pressure and high head pressure
Low subcooling
e. High suction pressure and high head pressure
Low subcooling
f. High suction pressure and high head pressure
High superheat
a. Compressor may be bad
b. Expansion valve opened, too
much oil
c. Overcharge
d. Non-condensable gas
e. Air restricted, dirty condenser,
bad condenser fans
f. High room temperature, high
evaporator load

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g. Low suction pressure and low head pressure
High superheat and low subcooling
h. Low suction pressure and low to normal head pressure
High superheat and high subcooling
i. Low suction pressure and low head pressure
Low subcooling
j. Low suction pressure and low head pressure
Low superheat and low subcooling
k. Low suction pressure and low to normal head pressure
High superheat and normal to high subcooling
l. Low suction pressure and normal head pressure
High superheat and normal subcooling
m. Low suction pressure and high head pressure
High superheat and high subcooling
n. Low suction pressure and high head pressure
High superheat and high subcooling
o. low to normal suction pressure and high head pressure
High to normal superheat and high subcooling
g. Undercharge
h. Liquid line restricted after
receiver, solenoid valve
restricted
i. Suction line restricted
j. Air restricted at evaporator,
evaporator iced
k. Evaporator restricted
l. Expansion valve restricted
m. Both evaporator and condenser
restricted
n. Liquid line restricted before
receiver
o. Condenser restricted
7. Use of the adjustable pressure control (if applicable for pump-down)
Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig
Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig
It may need to adjust the setting in the field to get the right cycle time.
A. Single Control
Fig. 3 Single Adjustable Pressure Control

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B. Dual Control
Fig. 4 Dual Adjustable Pressure Control
8. Use of the encapsulated pressure control (if applicable)
Fixed suction pressure setting: Cut in = 32 psig; Cut out = 10 psig
9. Use of the condenser fan control (if applicable for low ambient kit)
Head pressure setting: Cut in=170 psig; Cut out=120 psig; Differential=50 psig
It may need to adjust the setting in the field to prevent short fan cycle.
10.Use of the crankcase heater (if applicable for low ambient kit)
The crankcase heater is installed around the lower part of the compressor and
shall be turned on all the time. The heater is self-regulated.
CAUTION:
TURN OFF THE COMPRESSOR SWITCH BEFORE POWER THE
CONDENSING UNIT. ONLY TURN ON THE COMPRESSOR AFTER THE
UNIT HAS BEEN POWERED FOR 24 HOURS.

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11.Condensing Unit Troubleshooting
Unit not running
a. Incorrect power supply
b. Incorrect or loose wirings
c. Failed components
d. Liquid refrigerant in the compressor
e. Low pressure switch shutting down the system
a. Check for proper voltage
b. Check all wirings and connections
c. Check start relay, start capacitor, overload
protector, compressor.
d. Call service for OEM information
e. Check for system restriction or low
refrigerant