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Duct Packaged Cooling System
Installation, Operation & Care Manual
WM-4500DS WM-6500DS WM-8500DS
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Important Safety Information
WARNING:
• Do not use a ground fault interrupter (GFI).
• A dedicated 20 AMP circuit for WM-4500DS and 30 AMP for WM-
6500~8500DS are required.
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Table of Contents
Cellar Construction.…………………………….……………..3
Features & Specifications…………………….….…………..4
Temperature & Humidity……….…………..………..……….6
Care Guide…………………………………………………….10
User’ Troubleshooting…….………………………………...11
Installer’s Instructions………….…..….……..…………….15
Service Instructions…………………………….……………19
Electrical Wirings..…………….…..….……..………………25
Customer Support……………………………………………28
Warranty……………………………………………………….29
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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.
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Features and Specifications
• Wine-Mate duct packaged cooling systems WM-4500~8500DS 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.
• It is self-contained ready for use and no extra refrigeration tubing is required
in the field.
• The cooling systems are designed to provide chilled air to wine a cellar
through ducts and can be located up to 25 ft away for quiet operation. It also
provides more installation flexibility.
• The systems can be installed both outdoor and indoor.
• Back-curved impeller fans are good for total 50 ft long duct.
Fig. 1 DS Duct Packaged 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.
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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
WM-4500DS 45x34x23
WM-6500DS 45x34x23
WM-8500DS 45x34x25
Dimension
L”xW”xH”
Btu/h
CFM
4500
380
6500
490
8500
750
Cellar Size
(cu ft)
1000 R134a 115V-60HZ-8A 140
1500 R134a 115V-60HZ-14A 170
2000 R134a 115V-60HZ-17A 220
Refrigerant Electrical Rating Weight (lb)
Fig. 2 WM-4500~8500DS Dimensions
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Temperature and Humidity
1. The controller
Fig. 2 TEMPERATURE CONTROLLER
1) Keys
SET: To display set-point; in programming mode it selects a parameter or
confirms an operation.
: To start a manual defrost.
: To see the maximum stored temperature; in programming mode it browses
the parameter codes or increases the displayed value.
: 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 temperature 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
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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 to display the probe value.
4. How to change the set-point
1) Press and hold the SET key until the “°C” or “°F” LED starts flashing and the
set-point is displayed.
2) Press the up/down keys / to change the set-point value within 10 sec.
3) Press the SET key again to store the new set-point value.
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.
5. Manual Defrost
Press and hold the defrost
key until defrost starts. The defrost indicator will be
on.
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6. Parameter Programming
1) Press and hold the SET + keys until the “°C” or “°F” LED starts flashing,
then release the keys.
2) Press and hold again the SET + keys until the Pr2 label is displayed, then
release the keys. The first parameter Hy will be displayed.
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 and the display will flash 3 times.
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
LS
US
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
FSU fan action Std
FnC fan operating mode C-n: on with compressor & off during defrost
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 (
minimum set-point (
maximum set-point (
low temperature alarm (
heater set-point (
°)
°F/ °C)
°)
°)
°)
°)
°)
°)
°)
°)
°)
55
4
F: Fahrenheit
0
50
65
10
10
5
40
4
NOTE: Depending on the controller, not all parameters are used.
7. How to calibrate the air probe
If the actual cellar temperature differs from the setting temperature, set
parameter ot = actual cellar temperature minus set-point.
8. How to adjust defrost cycle
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In case there is excessive frost, the parameters FnC = C-y, idF = 4 and MdF =
20 can be used to avoid frost.
9. 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.
10. 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.
11. How to set low cellar temperature heater
The heater turns on at SAA minus Shy; the heater turns off at 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.
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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.
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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. Waiting for cut-in
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 electrician
e. Lower temperature setting
f. Wait
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
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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 > 90
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
°F
b. Check for 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 temperature
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
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fan running
but
condensing
unit not
running
13.Temperature
low
14.Evaporator
freezing up
15.Water leak
16.Excessive
condensate
in wine
cellar
17.Condensate
inside ducts
18.Condensate
outside
ducts
19.Circuit
tripping
20.Noisy
operation
b. Failed components
c. Low refrigerant
a. Low temperature setting
b. Low ambient temperature
c. Air probe fault
d. Temperature controller fault
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 causing
excessive condensate
b. High humidity causing excessive
condensate
c. Evaporator air flow restriction
d. Drain restricted or unit not level,
and water overflowing
e. Drip tray leak (No water overflow
but leak)
a. Air leak in the wine cellar causing
excessive condensate
b. High humidity causing excessive
condensate
c. Drain restricted
a. Drain line restricted
b. Continually running not stopping
c. Too cold supply air
a. Duct not insulated
b. High humidity
c. Too cold supply air
a. Incorrect fuse or breaker
b. Incorrect wirings
c. Failed components
a. Mounting area not firm
b. Loose parts
c. Compressor overloaded due to
b. Check start relay, start capacitor,
overload protector, compressor.
c. Call service
a. Raise the setting
b. Move to another location
c. Check probe connections or change
a new one
d. Change a new one
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 probe
e. Change defrost cycle
f. Call service
g. Call service
h. Call service
a. Check for air leak
b. Use drain line
c. Check supply air flow or air TD
d. Clean the drip tray and drain line
e. Seal the leak using silicone sealant
a. Check for any air leak
b. Use drain line
c. Clean the drip tray and drain line
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 fuse 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
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high ambient temperatures or
airflow restriction
d. Defective components
d. Call service for checking internal
loose, inadequate lubrication and
incorrect wirings
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Installer’s Instructions
Federal law requires that WINE-MATE split cooling systems be
installed by an EPA certified refrigeration technician.
1. General Instructions
WINE-MATE packaged duct system is shipped 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
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.
Fig. 4 WM-4500~8500DS Cooling System
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Fig. 5 Temperature Controller (4.25”L X 3.75D X 4.25”H)
Parts included:
Packaged Cooling system
Temperature Controller (4.5”LX4.5”WX3.75”D) + Air Probe
Parts not included:
Insulated ducts
CAUTION:
Low ambient condition kit is required if the installation area will be below
50°F.
2. Location
• Place the unit 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.
• Cooling 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.
• Leave minimum 5 feet clearance for hot air exhaust and leave minimum 1 foot
clearance for the ambient fresh air intake.
• Supply air flow shall be unobstructed for minimum 12” for a direct blow
installation; leave 2” clearance for a deflector installation; return air shall be
unobstructed for minimum 6”.
• Overall cold –air supply and room-air return duct length can be up to 50 ft
long; overall hot-air exhaust and ambient-air intake duct length can be up to
50 ft long.
• Secure the ducts with conduits to the cellar exterior walls and make sure they
are not curled, twisted, bent and clogged.
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3. Mounting
• The unit must be mounted on a floor or slab that is level and strong enough to
support up to 300lb.
• There are six ½” bolts required to secure the unit base.
• 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.
4. Temperature Controller and Air Probe
• The temperature controller can be mounted inside or outside the wine cellar,
but the air probe must be located inside the wine cellar or the return duct.
• 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.
• 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.
• If the air probe is installed in a return duct, the evaporator fans shall be
running all the time. Meanwhile due to the temperature differential the air
probe calibration should be used in order to maintain the proper wine cellar
temperature.
5. Insulated Duct and Drain Line Installation
• Secure the ducts with conduits to the cellar exterior walls and make sure they
are not curled, twisted, bent and clogged.
• Hook up the drain line. If rise-up of the drain line is needed, a condensation
pump must be used.
Model No Insulated Duct Drain Line Total Maximum Length
WM-4500DS 8” DIA 7/8” OD 50 FT
WM-6500DS 10” DIA 7/8” OD 50 FT
WM-8500DS 10” DIA 7/8” OD 50 FT
6. Intake and Exhaust Guards
• If the intake and exhaust are located outdoor, protection guards may be
required.
7. Field Wiring (see the electrical wiring diagrams)
• Use minimum 14 AWG wires for electrical connections.
• Connect the wires in the outlet box of the condensing unit to the power lines.
• Connect the wires in the outlet box of the evaporator unit to the temperature
controller and then connect the controller to the power lines.
8. Unit Operating
CAUTION:
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• If the low ambient condition kit is used, turn off the compressor and
power the condensing unit (The compressor switch is located at the
outlet box of the condensing unit). Then turn on the compressor and
power the evaporator unit after the condensing unit has been powered
for 12 hours.
NOTE:
• Make sure the fan speed control is turned on.
• Turn on the power.
• Press temperature controller to turn on the unit.
• It is necessary to check the air flow to meet the specified CFM. It may use fan
speed control to adjust the system refrigeration performance to achieve 810°F differential between return air and supply air while wine room
temperature is maintained 55°F. Turn the control knob clockwise to decrease
the air flow or counter-clockwise to increase the air flow.
Fig. 6 Fan Speed Control
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Service Instructions
1. Service Valve Operations
BACK POSITION FRONT POSITION MIDDLE POSITION
Fig. 7 ROTALOCK Valve Operation
BACK POSITION FRONT POSITION MIDDLE POSITION
Fig. 8 Base Valve Operation
1-Process or Manometer; 2-Receiver Discharge or Compressor Suction
3-Liquid Line or Suction Line; 4-Pressure Control
Back Position: Normal operation after installation is complete, process or
manometer port is closed.
Front Position: Storage or shipping operation, liquid or suction line connection
is closed.
Middle Position: Installation operation, all ports are open for evacuation, charge
and manometer.
2. Checking Pressure Control Settings
1) Use of the adjustable pressure control
Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig
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Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig
It may need to adjust the suction pressure cut-in & differential settings in the field
to get the right cycle time.
A. P70 Single/Dual Pressure Control
B. PS2 Dual Pressure Control
Fig. 9 Adjustable Pressure Control
2) Low ambient condition kit (if applicable)
A. Use of the condenser fan control
Head pressure setting: Cut in=170 psig; Cut out=110 psig; Differential=60 psig
It closes on rise of pressure. It may need to adjust the setting in the field to avoid
fan short cycle.
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Fig. 10 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.
3. Refrigeration Piping and Leak Testing
NOTES:
• 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) Use inverted U trap to prevent liquid from flooding back to the compressor.
3) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and test leak
The line sizes and refrigerant charges are listed as follows.
Model No Liquid Line Suction Line Recommended Charge
WM-4500DS 1/4" OD 1/2” OD R134a/26 OZ
WM-6500DS 1/4" OD 1/2” OD R134a/32 OZ
WM-8500DS 3/8" OD 5/8” OD R134a/40 OZ
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2. Connecting Electrical Wires
Connect all electrical components using the wiring diagrams in accordance with
all state and local codes.
4. 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.
• 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 discharge and suction valves with refrigerant
using the recommended initial 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.
5. 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.
2) The subcooling at the condensing unit shall be around 10°F. The charge may
be sufficient when there are no more bubbles forming in the liquid indicator.
3) Head pressure range: 120 ~ 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 ~ high wine cellar temperatures.
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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
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. 11 Fan Speed Control Fig. 12 Expansion Valve
Fig. 13 Liquid Filter Fig. 14 Liquid Indicator
6. 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
1) Compressor may be bad
2) Expansion valve opened, too
much oil
3) Overcharge
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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
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 head 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
7. 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
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,
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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Page 26
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-4500 & 6500DS Electrical Wiring Diagram
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Fig. 17 WM-8500DS Electrical Wiring Diagram
Fig. 18 Low Ambient Temperature
WM-4500DS-LA & 6500DS-LA Electrical Wiring Diagram
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Page 28
Fig. 19 Low Ambient Temperature
WM-8500DS-LA Electrical Wiring Diagram
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Page 29
Customer Support
If you need further assistance, please contact us at:
Vinotemp International
17631 South Susana Road
Rancho Dominguez, CA 90221
Tel: (310) 886-3332
Fax: (310) 886-3310
Email: [email protected]
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Page 30
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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Page 31
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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