Vinotemp WINEMATE VINO-1900SS, WINEMATE VINO-1500SS User Manual

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VINO-1500SS

VINO-1900SS

Installer’s Instruction

Federal law requires that WINEMATE split cooling systems be installed by an EPA certified refrigeration technician.

WINEMATE split system is shipped as components and is ready for use only after a certified refrigeration technician has properly installed, 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 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 with R134A. Refrigerant amount will vary depending on the length of line set.

1. Condensing Unit

Place the condensing unit WM-150SCUin 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.

Leave minimum 5 feet clearance for the exhaust side and leave minimum 1 foot clearance for the fresh air intake side.

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 45°F (optional low ambient kit for 20°F).

2. Evaporator Unit

The WM-15SFCevaporator unit is installed for ceiling mount with the air supply towards horizontally and air return on the bottom.

The WM-19SFCevaporator unit is installed for wall mount with the air supply towards top and air return on the sides.

Supply and return air flow from the evaporator unit shall be unobstructed for at least 1 foot.

There is a gravity drain line so that it can not be installed above the evaporator unit. Otherwise a condensation pump must be used.

3. Refrigeration Piping and Charging

NOTES: ALWAYS USE THE SUPERHEAT AND SUBCOOLING, PRESSURE READINGS TO CHARGE REFRIGERANT PROPERLY, THE LISTED CHARGES ARE FOR REFERENCE ONLY.

The installation order starts from condensing unit (including the receiver), liquid line filter-drier,moisture-liquidindicator (sight glass), liquid line, evaporator unit (including liquid line solenoid valve and thermostatic expansion valve or automatic expansion valve), returning to suction line and condensing unit.

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 superheat is set around 8-10°F for a 10°F TD system at factory.

Low side pressure: around 33 psig

High side pressure: 130 -150psig at 75-90°F ambient temperatures

The line sizes and refrigerant charges are listed as follows.

MODEL

REFRIGERATION

LIQUID

SUCTION

DRAIN

CHARGE

LINES

LINE

LINE

LINE

 

 

VINO-1500SS

< 50 FT

1/4"

3/8” OD

1/2” OD

R134a/

OD

15 OZ

 

 

 

 

VINO-1900SS

< 50 FT

1/4"

3/8” OD

3/8” OD

R134a/

OD

15 OZ

 

 

 

 

4. Pressure, Superheat and Subcooling Readings

NOTES: THE SERVICE VALVES MUST BE IN THE MIDDLE POSITIONS TO READ PROPERLY.

 

Complaint

 

Possible Causes

a.

High suction pressure and low head pressure

a.

Compressor may be bad

b.

High suction pressure and low head pressure

b.

Expansion valve opened, too

 

Low superheat and low subcooling

 

much oil

- 1 -

c.

High suction pressure and high head pressure

c.

Overcharge

 

 

 

 

 

Low superheat and high subcooling

d.

Non-condensablegas

 

d.

High to normal suction pressure and high head pressure

 

 

Low subcooling

e.

Air

restricted,

dirty

condenser,

e.

High suction pressure and high head pressure

 

Low subcooling

 

bad condenser fans

 

 

f.

High suction pressure and high head pressure

f.

High

room

temperature,

high

 

High superheat

 

evaporator load

 

 

 

g.

Low suction pressure and low head pressure

g.

Undercharge

 

 

 

 

 

High superheat and low subcooling

h.

Liquid

line

 

restricted

after

h.

Low suction pressure and low to normal head pressure

 

 

High superheat and high subcooling

 

receiver,

solenoid

valve

 

 

 

restricted

 

 

 

 

i.

Low suction pressure and low head pressure

i.

Suction line restricted

 

 

Low subcooling

j.

Air

restricted

at

evaporator,

j.

Low suction pressure and low head pressure

 

Low superheat and low subcooling

 

evaporator iced

 

 

 

k.

Low suction pressure and low to normal head pressure

k.

Evaporator restricted

 

 

 

High superheat and normal to high subcooling

l.

Expansion valve restricted

 

l.

Low suction pressure and normal head pressure

 

 

High superheat and normal subcooling

m. Both evaporator and condenser

m. Low suction pressure and high head pressure

 

High superheat and high subcooling

 

restricted

 

 

 

 

n.

Low suction pressure and high head pressure

n.

Liquid

line

restricted before

 

High superheat and high subcooling

 

receiver

 

 

 

 

o. low to normal suction pressure and high head pressure

o.

Condenser restricted

 

 

 

High to normal superheat and high subcooling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5. Valve Operation

SPINDLE BACK POSITION SPINDLE FRONT POSITION SPINDLE MIDDLE POSITION

Fig. 2.1 Valve Operation

Back Position: Process and manometer port closed for normal operationFront Position: Main connection to liquid or suction line closed

Middle Position: All ports open for vacuum, charge and measurement

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6. Electrical Wiring

Fig. 2.2 VINO1500-1900SSElectrical Wiring Diagram

7. Use of the adjustable low pressure control (if applicable)

Cut out = 5 psig; Cut in = 25 psig; Differential = 20 psig

It may need to adjust the setting in the field to get the right cycle time.

Fig. 2.3 Adjustable Pressure Control

- 3 -

8. Condensing Unit Troubleshooting

Unit not running

a.

Incorrect power supply

a.

Check for proper voltage

b.

Incorrect or loose wirings

b.

Check all wirings and connections

c.

Failed components

c.

Check start relay, start capacitor, overload

 

 

 

protector, compressor.

d.

Liquid refrigerant in the compressor

d.

Call service for OEM information

e.

Low pressure switch shutting down the system

e.

Check for system restriction or low

 

 

 

refrigerant

- 4 -