Vinotemp WINE-MATE WM-2500SSV, WINE-MATE WM-6500SSV, WINE-MATE WM-4500SSV, WM-2520SSV, WM-4520SSV Installation, Operation & Care Manual

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Rack Split Cooling System

Installation, Operation & Care Manual

WM-2500SSV WM-4500SSV WM-6500SSV

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Important Safety Information

WARNING:

• Do not use a ground fault interrupter (GFI).

• A dedicated 20 AMP circuit for WM-2500SSV and 30 AMP for WM-

4500~6500SSV are required.

- 1 -

Table of Contents

Cellar Construction.…………………………….……………..3
Features & Specifications…………………….….…………..4
Temperature & Humidity……….…………..………..……….6
Care Guide……………………………………………………10
User’ Troubleshooting…….………………………………...11
Installer’s Instructions………….…..….……..…………….14
Electrical Wirings..…………….…..….……..………………25
Customer Support……………………………………………28
Warranty……………………………………………………….29

- 2 -

Cellar Construction

This is only a guide and shall be considered as minimum requirements.
All interior walls and floors shall have a vapor barrier and a minimum of R13

insulation. All exterior walls and ceiling shall have a vapor barrier and a minimum
of R19 insulation. The vapor barrier shall be installed on the warm side of the
insulation. All joints, door frames, electrical outlets or switches and any pipes or
vents that go through the cellar shall be sealed to prevent air and moisture
leakage into the cellar. Concrete, rock, and brick are not insulation or vapor
barriers.

Doors shall be of a minimum size, insulated to at least R13 and tightly sealed
with high quality weather stripping. Be sure to seal the bottom of the door and fill
gap between the door’s frame and wall before installing the cap molding.
In order to maintain 55 °F in the wine cellar, the ambient temperature
surrounding the enclosure shall not exceed the temperature of the cellar by more
than 25 °F. No cellar wall shall receive direct sun or strong wind.

Lighting shall be of low wattage, with a timer to insure lights are not left on when
the cellar is not occupied.

The cooling system will not be able to maintain the proper temperature if fresh
moisture-laden air is constantly being introduced to the cellar. Symptoms of this
condition are; cooling unit runs all the time with only a slight reduction in
temperature and/or water overflows from the unit. Because of the temperature
difference between the inside and outside, very small cracks can allow large
amounts of outside air to enter into the cellar. Please be aware that moisture can
pass through solid concrete, paint and wood. Often a newly constructed cellar
contains fresh wood, paint, concrete and other building materials. These
materials contain large amounts of moisture. When placed into operation in this
type of environment, the system will work harder to remove this extra moisture
resulting in increased “run” time.

- 3 -

Features and Specifications

• Wine-Mate rack split cooling systems WM-2500~6500SSV are designed and
used to provide a cold temperature between 50~65 °F for a properly insulated
wine cellar.

• The wine cellar will maintain humidity range within 50~70% RH.

• These temperature and humidity ranges like in natural caves are optimized

for long term storage of wine.

• SSV units consist of a condensing unit and an evaporator unit; they are
connected by a liquid line and an insulated suction line.

• SSV con densing units can be located away from the wine cellars 50 ft so that
noise and compressor vibration are isolated.

• SSV ev aporator units are designed for installation inside a rack or in a wine
room corner, making them an ideal choice for small and medium wine cellars.
There are also multiple air inlet and outlet doors for different installations.

Fig. 1 SSV Rack Split Cooling System

NOTE:
Capacity is determined under the cellar, the cellar ambient and the
condensing unit ambient temperatures of 55°F, 75°F and 90°F, with R13
interior and R19 exterior insulations. Any higher ambient temperatures,
lower insulations will cause reducing capacity and the cellar temperature
may not be maintained at 55°F.

CAUTION:
If the installation area will be below 50°F, purchase a low ambient condition
kit.

- 4 -

NOTE:
To prepare rough-in, leave minimum 4” clearances for electrical wiring and
refrigeration piping.

The specifications and dimensions are listed as follows:

Model No Evap Unit

WM-

2500SSV

WM-

4500SSV

WM-

6500SSV

WM-25SFCV
WM-45SFCV
WM-65SFCV

Evap Unit A B C D

WM-25SFCV
WM-45SFCV
WM-65SFCV

Also see Fig. 3, 4 & 5 for further info.

Cond Unit

L”xD”xH”

WM-250SCU

18x14x12

WM-450SCU

18x14x12

WM-650SCU

24x18x18

41 1/2” 13” 8 13/16” 8 7/16”
47 1/2” 16” 9 5/16” 13 15/16”
51 1/2” 18” N/A N/A

Btu/h
CFM

2500

220

4500

335

6500

420

Cellar Size

(cu ft)

250 R134a
1000 R134a
1500 R134a

Refrigerant

Electrical

Evap Unit/
Cond Unit

115V-60HZ-0.77A

115V-60HZ-5.7A

115V-60HZ-0.77A

115V-60HZ-6.9A
115V-60HZ-1.9A

115V-60HZ-12A

Weight (lb)

Evap Unit/

Cond Unit

45/40
55/60
60/60

- 5 -

Temperature and Humidity

1. Use of the controller

Fig. 2 Temperature Controller

1) Keys
SET: To display target set point; in programming mode it selects a parameter or

confirm an operation.

(DEF): To start a manual defrost.

(UP): To see the maximum stored temperature; in programming mode it

browses the parameter codes or increases the displayed value.

(DOWN): To see the minimum stored temperature; in programming mode it

browses the parameter codes or decreases the displayed value.

: To turn on/off the power to the unit.

+ : To lock/unlock the keypad.
SET+ : To enter in the programming mode.
SET+ : To return to the temperature display.

2) Lock and unlock the keys

To lock the keys, press up + down keys + until POF is displayed; to unlock
the keys, press up + down keys + until PON is displayed.

3) Display

During normal operating conditions, the display shows the value measured by
the air regulation probe. In case of active alarm, the temperature flashes
alternately to the code alarm. The LED functions are listed as follows.

LED MODE FUNCTION

ON Compressor enabled

Flashing Anti-short cycle enabled

ON Defrost cycle enabled

ON Fan enabled

Flashing Fan delay after defrost enabled

ON Alarm occurring
ON Temperature measuring unit

Flashing Programming mode

- 6 -

4) Alarm Signals

The alarm codes are described as follows.

MESSAGE CAUSE FUNCTION

P1

HA

LA

CA

Temperature probe faulty Compressor switching to Con and CoF

High temperature alarm

Low temperature alarm

External alarm All outputs off

Probe temperature ALU higher than the
setting temperature; Outputs unchanged

Probe temperature ALL lower than the

setting temperature; Outputs unchanged

Probe alarms P1”, start a few seconds after the fault in the related probe; they
automatically stop a few seconds after the probe restarts normal operation.
Check connections before replacing the probe. Temperature alarms “HA”, “LA”
automatically stops as soon as the temperature returns to normal value. Alarm
“CA” (with i1F=PAL) recovers only by switching off and on the instrument.

2. Temperature Setting

• Set the temperature at 55 °F for the optimum aging of wine

• On initial start-up, the time required to reach the desired temperature will

vary, depending on the quantity of bottles, temperature setting and
surrounding temperature.

• Allow 24 hours to stabilize the temperature for each new temperature setting

operation

3. How to see temperature set-point

1) Press and immediately release the SET key, the display will show the set-point
value.

2) Press again and immediately release the SET key or wait for 5 seconds to
display the probe value.

4. How to change the set-point

1) Press the SET key for more than 3 seconds until the “°C” or “°F” LED starts
blinking and the set-point will be displayed.

2) To change the set value, press the up/down keys / within 10 sec.

3) To store the new set-point value, press the SET key again or wait 10 sec.

NOTE: The unit turns on at set-point Set plus regulation differential Hy after anti­short cycle AC has elapsed; the unit turns off at set-point Set.

- 7 -

5. How to calibrate the air temperature probe

If the actual cellar temperature differs from the displaying temperature, set ot =
actual cellar temperature minus displaying temperature.

6. How to adjust defrost cycle

1) In case there is excessive frost, the parameters FnC = C-y, idF = 6 and MdF =

20 can be used to avoid defrost.

2) In case the air probe is located in the return duct, the parameters FnC = O-n,

idF = 8 and MdF = 20 can be used to help drain.

7. How to adjust the humidity

The parameter Fon is used to adjust the humidity in the wine cellar. Higher Fon
results in higher relative humidity. Use a separate hygrometer to monitor the

humidity.

8. How to set alarm call

1) Speech notice will be sent to your phones when the cellar temperature is ALU

higher or ALL lower than the set-point Set.

2) In order to test the call function, set parameters Ald = 0 and dAO = 0. After
testing, set Ald = 60 and dAO = 23.

9. How to set low cellar temperature heater

The heater turns on at set-point SAA minus regulation differential Shy; the
heater turns off at heater set-point SAA.

NOTES:

• Use a forced air heater to warm up the wine cellar.

• If there is a thermostat on the heater, bypass it or set the thermostat at the

highest level.

• If the heater runs more than 10 A current, use a 120VAC coil contactor.

10. Manual Defrost

Press the DEF key for more than 2 seconds and a manual defrost will start.

11. Parameter Programming

1) Press the SET +

keys for more than 3 sec until the “°C” or “°F” LED starts

blinking, then release the keys.

2) Press again the SET + keys for more than 7sec until the Pr2 label will be
displayed, then release the keys. The first parameter Hy will be displayed.

- 8 -

3) Press up/down keys / to scroll to the required parameter within 10 sec.

4) Press the “SET” key to display its value.

5) Use up/down keys to change its value within 10 sec.

6) Press “SET” to store the new value.

7) To exit: Press SET + or wait 15sec without pressing a key.

PARAMETER DESCRIPTION DEFAULT VALUE

Set
Hy

AC anti-short cycle delay (min) 10
Con compress on with probe faulty (min) 15
CoF compress off with probe faulty (min) 30

CF

rES display resolution in: integer

dLy temperature display delay (min) 1

ot
US
LS
idF defrost cycle interval time (hour) 12

MdF defrost cycle endurance time (min) 30
ALC temperature alarm type rE: relative to set-point

ALU

ALL
AFH
ALd temperature alarm delay (min) 60

dAO temperature alarm delay on startup (hr) 23

SAA

SHy

FnC fan operating mode

Fon fan on with compressor off (min) 0
FoF fan off with compressor off (min) 15

temperature regulation differential (

high temperature alarm (

alarm recovery differential (

heater regulation differential (

set-point (

temperature unit (

probe calibration (

maximum set-point (

minimum set-point (

low temperature alarm (

heater set-point (

°)

°F/ °C)

°)

°)

°)

°)
°)

°)

°)

°)

°)

C-n: on with compressor & off during defrost

C-y: on with compressor & on during defrost

O-n: continues running & off during defrost

o-y: continues running & on during defrost

55

4

F: Fahrenheit

0
65
50

10
10

5

40

4

NOTE: Depending on the unit, not all parameters are used.

- 9 -

Care Guide

In general, always unplug system or disconnect power while doing care.

1. Coil Cleaning

• Clean the condenser coil regularly. Coil may need to be cleaned at least
every 6 months.

• Use a vacuum cleaner with an extended attachment to clean the coil when it
is dusty or dirty.

2. Condensate Removing

• Remove the excessive condensate if it is accumulated in the wine cellar at
high humidity conditions.

- 10 -

User’s Troubleshooting

This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.

Complaint Possible Causes Response

1. Unit not
running

2. Unit not
starting , but
temperature
rising high

3. Temperature
fluctuating

4. Temperature
high, unit
stopping
and starting
normally

5. Temperature
high, unit
stopping
and starting
with short
running time

6. Temperature

a. Power cord not plugged
b. No power from supply
c. Incorrect or loose wirings
d. Low voltage
e. Setting higher than ambient

temperature
f. Cut-in too high
g. Defrost light blinking
h. Compressor light blinking
i. Defective controller
a. Anti-short cycle

a. Air probe

a. Temperature setting high

a. Air probe touching the

evaporator coil, displaying

temperature ok
b. Air probe in cold-air supply,

displaying temperature ok
c. Failed controller and probe

a. Improper cellar insulation & seal a. Check insulation, gasket and door

a. Check power cord
b. Check receptacle and fuses
c. Check all wirings and connections
d. Contact an authorized ele ctri cian
e. Lower temperature setting

f. Reduce Hy
g. Unit is under defrost mode
h. Unit is under anti-short cycle delay
i. Call service for diagnosis
a. Reset AC

a. When using an air probe, the wine

bottle temperature is mainly
controlled by the average air

temperature. If the set-point is 55
with the differential 4F, the cooling

unit turns on at 59
temperature (It may be higher than

59

°F if it is in anti-short cycle or

defrost cycle) and turns off at 55
of air temperature. The average air

temperature is 57
wine temperature is around 57+/-

0.5

°F. The air is light enough to

change so quickly that it maintains
relatively constant average
temperature that would prevent wine
bottle temperature from fluctuating.

a. Lower the setting

a. Move the air probe away from the

evaporator

b. Move the air probe away from the

cold-air supply

c. Call service for diagnosis

opening

°F of air

°F, and then the

°F

°F

- 11 -

high or not
cooling and
running
continually

7. Unit running

too long

8. Condenser
fan running
but
compressor
not running

9. Compressor
running but
condenser
fan not
running

10.Temperature
high,
compressor
stopping
and starting
but very
short
running time

11.Evaporator
fan running
too long

12. Evaporator

b. Cellar too large
c. Ambient temperature too high
d. Exhaust restricted

e. Malfunctioning fans
f. Evaporator or condenser airflow
g. Dirty Condenser

h. Iced evaporator
i. Refrigeration system restriction
j. Refrigerant leak
k. Undercharge or overcharge
l. Failed components

a. Improper cellar insulation & seal
b. Exhaust restricted

c. Cellar too large
d. Ambient temperature higher >

90

°F

e. Dirty Condenser
f. Improper condenser air flow

a. Incorrect or loose wirings
b. Failed components

c. Liquid refrigerant in the

compressor

a. Fan blade stuck
b. Incorrect or loose wirings
c. Failed motors
d. Fan cycle control

a. Failed components
b. Improper condenser airflow

c. Dirty condenser
d. Overcharge of refrigerant
e. Discharge or suction pressure

too high

a. Post-compressor fan running

mode for humidity modulation

a. Incorrect or loose wirings a. Check all wirings and connections

b. Check f or excessive size
c. Check installation location
d. Leave minimum 3 feet clearance for

the hot air exhaust side and leave
minimum 1 foot clearance for the
ambient air intake side

e. Check for both evaporator and

condenser fans

f. Check for air restrictions, air short-

circulation, grille directions
g. Clean condenser
h. Defrost and reset temperat ure
i. Call service
j. Call service
k. Call service
l. Check compressor windings, start

relay and overload protector
a. Check insulation, gasket and door

opening

b. Leave minimum 3 feet clearance for

the hot air exhaust side and leave
minimum 1 foot clearance for the

ambient air intake side
c. Check for excessive size
d. Check for installation location

e. Clean condenser
f. Check for fan and air short

circulation
a. Check all wirings and connections

b. Check start relay, start capacitor,

overload protector, compressor.

c. Call service.

a. Check for proper clearance
b. Check all wirings
c. Call service
d. Check for setting

a. Check compressor windings, start

relay and overload protector.
b. Check for condenser fan
c. Clean condenser
d. Call service for removing refrigerant
e. Call service for information

a. Reset FON

- 12 -

fan running
but
condensing
unit not
running

13.Evaporator

freezing up

14.Water leak

15.Condensate
inside ducts

16.Condensate
outside
ducts

17.Circuit

tripping

18.Noisy

operation

b. Failed components
c. Low refrigerant

a. Evaporator air flow restriction
b. Condenser air flow restriction
c. Not stopping due to air leak, high

ambient temperature or low

temperature setting
d. Defective controller or probe
e. Low ambient temperature
f. Initially working then stopping,

moisture in the system
g. Refrigerant low or leaking
h. Expansion valve blockage

a. Air leak in the wine cellar

(excessive condensate on the

front of the cooling unit)
b. High humidity
c. Evaporator air flow restriction or

low refrigerant
d. Water passages restricted
e. Drip tray leak (No water overflow

but water leak)
a. Drain line restricted
b. Continually running not sto pping

c. Too cold supply air
a. Duct not insulated

b. High humidity
c. Too cold supply

a. Incorrect fuse or breaker
b. Incorrect wirings
c. Failed components

a. Mounting area not firm
b. Loose parts

c. Compressor overloaded due to

high ambient temperatures or
airflow restriction

d. Defective components

b. Check start relay, start capacitor,

overload protector, compressor.

c. Call service

a. Check for fans and CFM
b. Check for fans and CFM
c. Check for seal, door opening,

ambient temperature and

temperature setting
d. Check for controller and prob e
e. Change defrost cycle
f. Call service

g. Call service
h. Call service

a. Check for any air leak

b. Use drain line
c. Check supply air flow or air TD

crossing evaporator
d. Clean the drip tray
e. Seal the leak using silicone sealant

a. Check for drain
b. raise temperature setting or

increase defrost cycle

c. Increase air flow or raise

temperature setting
a. Check for insulation
b. Use dehumidifier
c. Increase air flow or raise

temperature setting
a. Check for proper fu se or breaker
b. Check for wirings and connections
c. Call service

a. Add support to improve installation
b. Check fan blades, bearings,

washers, tubing contact and loose

screws.
c. Check for airflow

d. Call service for checking internal

loose, inadequate lubrication and

incorrect wirings

- 13 -

Installer’s Instruction

Federal law requires that WINE-MATE split cooling systems be

installed by an EPA certified refrigeration technician.

1. General Instructions

WINE-MATE split system is shipped as components and is ready for use only
after a certified refrigeration technician has properly installed 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 lines
are connected, the system must be checked for restriction, pressurization and
leak. Then the system must be evacuate and charged with refrigerant.
Refrigerant amount will vary depending on the length of line set.

Parts included:

Evaporator Unit (liquid line solenoid valve and expansion valve installed)
Condensing Unit (discharge and suction valves installed)
Liquid Filter
Liquid Indicator
Temperature Controller (4.5”LX4.5”WX3.75”D) + Air Probe

Parts not included:

Liquid line copper tubing
Suction line copper tubing

- 14 -

CAUTION:
Liquid and suction line locations may differ from what are shown here,
please check on the units for proper installation.

Fig. 3 WM-25~65SFCV Evaporator Unit

- 15 -

Fig. 4 WM-250~450SCU Condensing Unit

Fig. 5 WM-650SCU Condensing Unit

- 16 -

Fig. 6 Liquid Filter Fig.7 Liquid Indicator

Fig. 8 Temperature Controller (4.25”L X 3.75D X 4.25”H)

2. Evaporator Unit Installation

1) The WM-25~65SFCV evaporator units should be installed for corner mount
with the supply air on the top and return air on the bottom.

2) Air supply shall be unobstructed minimum 12” for a direct blow installation;
leave 2” clearance for a deflector installation; air return shall be unobstructed
minimum 6”.

3) A grille can be used to cover the supply and return with 0~2” clearance; or 2-3
ft long duct can be added.

4) There is a gravity drain system used, so the unit shall be installed level or with
a slight slope downward the drain connection and the drain line shall be
installed slope down toward the drain. If rise-up is needed, a condensation
pump must be used.

3. Condensing Unit Installation

CAUTION:
Low ambient condition kit is required if the installation area will be below
50°F. If the condensing unit is equipped with a low ambient condition kit,

do not turn on the compressor until the condensing unit has been powered
for minimum 12 hours.

- 17 -

1) Place the condensing units WM-250~650SCU 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.

2) 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.

3) Leave minimum 5 ft clearance for the exhaust side
and leave minimum 1 foot clearance for the ambient
air intake side.

4) Service valve operations

1 - Process & Manometer
2 – Receiver Discharge or Compressor Suction
3 – Liquid Line or Suction Line
4 - Pressure Control
Back Position: Normal operation, process and manometer port closed
Front Position: Liquid/suction line connection closed
Middle Position: All ports open for evacuation, charge and manometer

BACK POSITION FRONT POSITION MIDDLE POSITION

Fig. 9 ROTALOCK Valve Operation

BACK POSITION FRONT POSITION MIDDLE POSITION

Fig. 10 Base Valve Operation

- 18 -

4. Temperature Controller and Air Probe

1) The temperature controller can be mounted either inside or outside the wine
cellar, but the air probe must be located inside the wine cellar.

2) The air probe shall be located in the wine cellar 5 ft above the floor or the air
return area, but it shall not be located in the air supply area or other areas
where air is not circulated.

3) Air probe can be pulled out of the temperature controller around 5 ft; if
additional wires are needed, 18 gauge wires may be used to extend the air
probe.

5. Checking Control Settings

1) 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. P70 Single/Dual Control

B. PS2 Dual Control

Fig. 11 Adjustable Pressure Control

- 19 -

2) Use of the encapsulated pressure control (if applicable)

Fixed suction pressure setting: Cut in = 32 psig; Cut out = 10 psig

Fig. 12 Fixed Pressure Control

3) Low ambient condition kit (if applicable)

A. Use of the condenser fan control

Head pressure setting: Cut in=170 psig; Cut out=120 psig; Differential=50 psig
It closes on rise of pressure. It may need to adjust the setting in the field to avoid
fan short cycle.

Fig. 13 Condenser Fan Cycle Control

B. Use of the crankcase heater
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.

6. Piping, Checking and Testing

NOTES:

- 20 -

• The line connection sizes of liquid filter & indicator, the valve
connection sizes of condensing unit and the line connection sizes of
evaporator unit are not necessary the same as the listed refrigeration
line sizes.

• If the condensing unit is installed above the evaporator unit, use the
suction line one listed size smaller.

• Expansion and solenoid valves have been installed on the liquid line in
the evaporator unit.

1) The installation order starts from condensing unit (including receiver and
discharge valve), liquid line filter-drier, moisture-liquid indicator, 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 back to condensing unit.

2) If the condensing unit is located below the evaporator unit, use inverted U
trap to prevent liquid from flooding back to the compressor; if the elevation
difference is more than 10 ft or the line set exceeds 75 ft, use both inverted U
trap and suction accumulator.

3) If the condensing unit is located more than 10 ft above the evaporator unit,
use U trap to aid oil returning to the compressor.

4) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and test leak.

5) Hook up the drain line and check if water drains.

The line sizes and refrigerant charges are listed as follows.

Model No

WM-2500SSV <= 75 FT 1/4" OD 3/8” OD 7/8” OD R134a/19 OZ
WM-4500SSV <= 75 FT 1/4" OD 1/2” OD 7/8” OD R134a/26 OZ
WM-6500SSV <= 75 FT 1/4" OD 1/2” OD 7/8” OD R134a/32 OZ

Equivalent

Line Set

Liquid

Line

Suction

Line

Drain Line

Recommended

Charge

7. Connecting Electrical Wires

Connect all electrical components using the wiring diagrams in accordance with
all state and local codes.

8. Evacuating, Charging and Starting the system

CAUTION:

• Always use the superheat and subcooling, pressure readings to charge
refrigerant properly; the listed charge amounts are used for reference
only.

• If the unit is equipped with a low ambient condition kit and installed in
the summer, charge 15% more refrigerant.

- 21 -

• If the low ambient condition kit is used, turn off the compressor before

power the condensing unit. Only turn on the compressor after the
condensing unit has been powered for 12 hours.

1) Evacuate the system; both discharge and suction valves must be in the
middle positions during evacuating.

2) Charge the system through both suction and discharge valves with refrigerant
using the suggested amount; both discharge and suction valves must be in
the middle positions during charging.

3) Connect the power to start the system and check the follo wing temperatures
and pressures.

9. Adjusting and Completing the Installation

1) 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 counter­clockwise to increase the minimum speed. The minimum speed should be
adjusted until it supplies the required CFM.

Fig. 14 Fan Speed Control

2) 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.

3) Head pressure range: 125 ~ 150 psig at 70 ~ 90 °F condensing unit ambient
temperature.

4) 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.

5) The temperature split across the evaporator shall be 8 ~ 10°F at 55°F wine
cellar temperature.

6) 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 ambient temperatures.

7) 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

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charge is good, then increase the evaporator suction pressure by turning the
hex nut (5/16”) clockwise. Liquid must always be charged into the hide side
when the compressor runs.

8) If the superheat is low, then decrease the evaporator suction pressure by
turning the hex nut (5/16”) counter-clockwise.

9) Both discharge and suction valves must be in the back positions before
disconnecting.

10) Close all service valves and disconnect all manifolds and hoses.

Fig. 15 Expansion Valve

10. Pressure, Superheat and Subcooling Readings

CAUTION:
To read properly the service valves must be in the middle positions.

Complaint Possible Causes

1) High suction pressure and low head pressure
Zero superheat and zero subcooling

2) High suction pressure and low head pressure
Low superheat and low subcooling

3) High suction pressure and high head pressure
Low superheat and high subcooling

4) High to normal suction pressure and high head
pressure
Low subcooling

5) High suction pressure and high head pressure
Low superheat and low subcooling

6) High suction pressure and high head pressure
High superheat

7) Low suction pressure and low head pressure
High superheat and low subcooling

8) Low suction pressure and low to normal head
pressure
High superheat and high subcooling

9) Low suction pressure and low head pressure
Normal to high superheat and low subcooling

10) Low suction pressure and low head pressure

1) Compressor may be bad

2) Expansion valve opened, too
much oil

3) Overcharge

4) Non-condensable gas

5) Air restricted, dirty condenser,
bad condenser fans

6) High cellar temperature, high
evaporator load

7) Undercharge

8) Liquid line restricted after
receiver, solenoid valve restricted

9) Suction line restricted

10) Air restricted at evaporator,

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Low superheat and low subcooling

11) Low suction pressure and low to normal head
pressure
High superheat and normal to high subcooling

12) Low suction pressure and normal head pressure
High superheat and normal subcooling

13) Low suction pressure and high hea d pressure
High superheat and high subcooling

14) Low suction pressure and high head pressure
High superheat and high subcooling

15) low to normal suction pressure and high head
pressure
Normal to high superheat and high subcooling

11. Condensing Unit Troubleshooting
Unit not running

1) Incorrect power supply

2) Incorrect or loose wirings

3) Failed components

4) Low pressure switch shutting down the
system

5) high pressure switch shutting down the
system

evaporator iced

11) Evaporator restricted

12) Expansion valve restricted

13) Both evaporator and condenser
restricted; liquid and suction lines
connected wrong

14) Liquid line restricted before
receiver

15) Condenser restricted

1) Check for proper voltage

2) Check all wirings and connections

3) Check start relay, start capacitor,
overload protector, compressor.

4) Check for system restriction or low
refrigerant

5) Check for the condenser fan

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Electrical Wiring Diagrams

CAUTION:

• Hidden lines are the field wirings

• Use minimum 14 gauge wires for power lines.

• If equipped with low ambient condition kit, use low ambient temperature

wiring diagrams.

• A safety switch is always recommended for the condensing unit.

Fig. 16 WM-2500~4500SSV Wiring Diagram

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Fig. 17 WM-6500SSV Electrical Wiring Diagram

WM-2500~4500SSV-LA Electrical Wiring Diagram

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Fig. 18 Low Ambient Temperature

Fig. 19 Low Ambient Temperature

WM-6500SSV-LA Electrical Wiring Diagram

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Customer Support

If you need further assistance, please contact us at:
Vinotemp International

17631 South Susana Road
Rancho Dominguez, CA 90221
Tel: [phone]
Fax: [phone]
Email: [email protected]

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Warranty

Thank you for choosing a Vinotemp cooling unit.

Please enter the complete model and serial numbers in the space provided:

Model_________________________________________________________
Serial No.______________________________________________________

Attach your purchase receipt to this owner’s manual.

1. Limited Warranty

VINOTEMP warrants its products, parts only, to be free from defects due to
workmanship or materials under normal use and service for twelve months after
the initial sale. If the product is defective due to workmanship or materials, is
removed within twelve months of the initial sale and is returned to VINOTEMP, in
the original shipping carton, shipping prepaid, VINOTEMP will at its option, repair
or replace the product free of charge.

This warranty constitutes the entire warranty of the VINOTEMP with respect to its
products and is in lieu of all other warranties, express or implied, including any of
fitness for a particular purpose. In no event shall VINOTEMP be responsible for
any consequential damages what is so ever. Any modification of VINOTEMP
products shall void this warranty.

Service under Warranty

This service is provided to customers within the continental UNITED STATES
only. VINOTEMP cooling units are warranted to produce the stated number of
BTU/H. While every effort has been made to provide accurate guidelines,
VINOTEMP can not warranty its units to cool a particular enclosure.

In case of failure, VINOTEMP cooling units must be repaired by the factory or its
authorized agent. Repairs or modifications made by anyone else will void the
warranty.

Shall a VINOTEMP cooling unit fail, contact the dealer for instructions, do not
return the unit to the factory without authorization from VINOTEMP. If the unit
requires repair, re-pack it in the original shipping carton and return it to the
factory, shipping prepaid. VINOTEMP will not accept COD shipments. If the unit
is determined to be faulty and is within the twelve month warranty period

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VINOTEMP will, at its discretion, repair or replace the unit and return it free of
charge to the original retail customer. If the unit is found to be in good working
order, or beyond the initial twelve month period, it will be returned freight collect.

2. Limitation of Implied Warranty
VINOTEMP’S SOLE LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED

TO, AT OUR OPTION, REPAIRING OR REPLACING OF UNIT.
VINOTEMP SHALL NOT BE LIABLE FOR:

DAMAGE TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN THE UNIT,
DAMAGES BASED UPON INCONVENIENCE, LOSS OF USE OF THE UNIT,
LOSS OF TIME OR COMMERCIAL LOSS, ANY OUTER DAMAGES,
WHETHER INCIDENTAL, CONSEQUENTIAL OR OTHERWISE.

THIS WARRANTY IS EXCLUSIBE AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED OR INPLIED, INCLUDING BUT NOT LIMITED
TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

While great effort has been made to provide accurate guidelines VINOTEMP
cannot warrant its units to properly cool a particular enclosure. Customers are
cautioned that enclosure construction, unit location and many other factors can
affect the operation and performance of the unit. There for suitability of the unit
for a specific enclosure or application must be determined by the customer and
cannot be warranted by VINOTEMP.

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