Vinopro BU-22 Manual de usuario

SERVICE MANUAL

Model:BU-22 ，BU-58

SAFETY

PRECAUTIONS

WARNING:

Unplug the appliance before cleaning, maintenance or servicing.

Failure to

so can result in electrical shock or

death

Tools you will need

1. Combination Plier 2. Phillips/Slotted Screwdriver

3.Multimeter 4.ClampMeter(5A)

5SolderingIron 6.

Wire

Strippers

7. Pinch Off Plier8 Hairdryer 8. Mill File

Material you will need

1. Service Tube ( Ф6mm) 2.ShockAbsorbingClay

Device you will need

1.VacuumPump 2.WeldingMachine

3. Gas

Meter 4.Temp.Meter

CONTENTS

Cooling System Fault

■Troubleshooting ………………………………………………………………………………………………..(P1)

■How to re-charge Refrigerant ………………………………………………………………………………(P2)

■Test After Repairing…………………………………………………………………………………………….(P2)

■Baffle Board and Control Box Disassembly ………………………………………………………………(P3)

■Solder Joints Position (Front Side) ……………………………………………………………….…….....(P9)

Noise Problem

■Compressor Noise ……………………………………………………………………………...…………….(P11)

■Fan Noise ……………………………………………………………………………………………………..(P11)

■Noise From Capillary Tube…………………………………………………………………………………....(P13)

Evaporator Ice-Up …………………………………………………………………………….………..(P15)

Temperature Unstable …………………………………………………………………….……….(P15)

Control System Faults

■Temp. Sensor Fault .……………………………………………………………………….………………(P16)

■Temp. Sensor Replace…………………………………….……………………………… ……………….P17)

■Display Error of LED Light .……………………………………………………………….…………….(P18)

■Control PCB Replace…………………………………….……………………………… ………………...(P19)

■Power PCB Replace…………………………………….……………………………… ………………….(P20)

■Transformer Replace … ……………………………………………………………………………………(P21)

■Control PCB Connection Position ….…………………………………….……………………………….(P22)

■Power PCB Connection Position… ……………………………………………………………………….(P22)

■Compressor Start Relay and Overload Protector Replace……………………………………………...(P23)

■LED Light Replace …………………………………….………………………….………………………(P24)

１

Cooling System Fault

■ Troubleshooting

Is Compressor current same as data marked on Rated Label?

1. Cut off Discharge Tube and Service Tube,;

2. Charge 0.8—1MPa High-pressure Nitrogen.

Does air flow feel?

Note：It is not allowed to run the unit too long after

tubes cut off, in case of humidity air absorbed by

Compressor.

Is Refrigerant enough,

not less than 90% of data

marked on Rated Label

Compressor itself is

broken, replace is

necessary.

1.Condenser Coil

or Anti-dew Tube is

choked.

2. Condenser,

Evaporator, Dry

Filter is broken.

The unit is

beyond repair, it

should be

scra

ed.

Will the Wine Cooler reach 5℃? (after continuously running for 3hrs at ambient 32℃)

Check Cooling System

No YES

Cooling System works

well.

Visually inspect Fans, PCB, Temp. Senor and PTC Heater, is all OK?

Disassemble and Replace

faulty part as below mentioned.

Is Compressor running with unusual noise or

vibration?

Is Start Relay and Overload Protector OK?

Disassemble and

Replace faulty part as

below mentioned.

YES

Replace faulty

part.

3. Anti-dew

Tube leaks

Re-solder tube or

replace faulty part.

Restart Compressor,

Does it work well?

Re-charge

Refrigerant

YES

Yes

Check Rubber Foot, Mounting

Screw and Capillary Tube.

YES

Disassemble and Replace

faulty part as below mentioned.

２

■ How to re-charge Refrigerant (R600a):

Step 1 Extract vacuum from Suction Tube (Low-pressure Tube) and Discharge Tube (Hi-pressure Tube) at the same

time, pls.refer to Figure 10,11,12.for location of tubes and solder joints.

Step 2. Vacuum extraction will take 20min with pressure less than 100Pa;

Step3 . Re-solder Service Tube of Dry Filter under vacuum extracting condition;

Step 4 Re-charge Refrigerant into Service Tube of Suction, Refrigerant weight should be same as the data marked

on Rated Label.

Step 5. Re-solder Service Tube of Suction Tube.

■ Test After Repairing:

After repairing and run the unit for 3 hours at ambient temp. 32℃, if

1.actual temp. of inner cabinet is same as temp. set, and

2.the compressor will stop after unplugged with actual temp.of inner cabinet 2.5℃less than temp.set, and

3.the compressor will restart after plugged with actual temp.of inner cabinet 2.5℃more than temp.set.

then the cooling system can be confirmed in normal working condition.

Remark: if necessary, pls. record actual term. of inner cabinet by a temp. meter.

■ Baffle Board and Control Box Disassembly

1.For BU-22

Step 1: Open door fully (180O), Lift up Chrome Shelf and pull it outwards one by one (Figure 1);

３

Step 2: Unscrew the 4 screws (No.1-4) on Baffle Board and Control Box one by one (Figure 2)

Step 3: Take our Baffle Board slightly. (Figure 3).

Screw

Screw Screw

AScrew

CScrew

Screw

４

Step 4: Pull Control Box out (about 70mm away) in Horizontal direction, and unplug terminals of Power PCB

carefully. Take Control Box out.(Figure 4).

---Control Box After Pulled Out (Figure 5).

Terminal

Control Box

(Temp.Sensor)

Power PCB

Cooling Fan

Control PCB

PCB Bracket

PCB Box

５

----Inside view of unit after Baffle Board and Control Box took out (Figure 6).

2.For BU-58

Step 1: Lift up Shelf and pull it outwards one by one (Figure 7);

Capillary

Solder Joint

Discharge

(Low Pressure)

Solder Joint

Evaporator

Stopper

Shelf

６

Step 2: Unscrew the 5 screws (No.1-5) on Separator Board Cover one by one (Figure 8)

Step 3: Pull Baffle Board out

Caution: Unplug Fan Connector carefully before pulling Baffle Board Out, which is hided back of Fan;

----Inside View of unit after Baffle Board took out. (Figure 9);

(Temp.Sensor)

Discharge Tube

(Lower Pressure)

Solder Joint

Capillary

Solder Joint

７

Step 4: Unscrew the two screws (No1-2), which is hided at back of Control Box (Figure 10);

Step 4: inserting Phillips Screwdriver into the hole as following figure, and loose the 2 screws (No.3-4) a little (about

2mm away) . (Figure 10-1);

Screw

(at back of PCB Box)

Screw

Phillips

Screw Drive

８

Step 5: Pull Control Box put. (Figure 10-2);

Caution: Unplug PCB Terminal carefully before pulling Control Box Out, which is hided back of Control Box;

----Control Box after took out. (Figure 11);

Terminal

９

■ Solder Joints Position

1. For BU-22 (Figure 12)

A-- Capillary Tube Solder Joint B—Connection Tube 1 Solder Joint

C-- Connection Tube 2 Solder Joint D—Compressor Service Tube Solder Joint

E—Service Tube Solder Joint F-- Dry Filter (Inlet) Solder Joint

G-- Dry Filter (Outlet) Solder Joint H-- Condenser Solder Joint

I-- Suction Tube (Low Pressure Tube) Solder Joint

J-- Discharge Tube (High Pressure Tube ) Solder Joint

K-- Connection Tube 3 Solder Joint

１０

2. For BU-58 (Figure 13)

A-- Evaporator Solder Joint B-- Capillary Tube Solder Joint

C-- Condenser Solder Joint D-- Service Tube Solder Joint

E—Compressor Service Tube Solder Joint F-- Dry Filter (Inlet) Solder Joint

G-- Suction Tube (Low Pressure Tube) Solder Joint

H-- Discharge Tube (High Pressure Tube) Solder Joint

I-- Dry Filter (Outlet) Solder Joint

１１

NoiseProblem

■Compressor Noise

Remarks: It is normal for compressor running under 42dB.

Problem: If it sounds like loud grinding, clicking and ticking, etc., it may indicate a fault happened, a proper repair or

replacement is necessary.

Solutions:

1. Check Shock Absorbing Rubber Foot, which will become too hard and brittle over time, replace it with new

one.(Figure 26)

2. Check Mounting Screw, too tight or loose will cause noise, adjust it to a right condition. (Figure 26)

■Fan Noise

Remarks: It is normal for compressor running under 32dB.

Problem: If it sounds too loud, it may indicate a fault happened caused by following reasons:

a. Fan Shaft is broken;

b. Fan running unstable due to part abased badly over time..

Solutions:

Replace faulty Fan as following steps:

●Evaporator Cooling Fan replace (Figure 14, Figure 14-1)

Step1:.Take out all Shelves；

Step 2: Remove Baffle Board；

Step 3: Unplug Fan Terminal;

Step 4: Unscrew all Fan Screws (4pcs) and replace broken Fan with new one.

1. For BU-22 (7Bottles) (Figure 14)

For 7 bottles

１２

2 .For BU-58 (19 Bottles) (Figure 14-1)

●Condenser Cooling Fan replace

1. For BU-22 (Figure 15)

Step 1: Unplug Fan Terminal；

Step 2: Unscrew all Fan screws (4pcs) and replace broken Fan with new one.

2. For BU-58 (Figure 16)

Step 2: Unplug Fan Terminal；

Step 2: Unscrew all Fan screws (2pcs) and replace broken Fan with new one.

For 19 bottles

Terminal

Screws

(4pcs)

Cooling Fan

Condenser

１３

■Noise From Capillary Tube

Remarks: When Refrigerant (R600a) flows in Capillary Tube, it will bring tube a slight vibration and make a very

small noise, it is normal phenomenon, except the following problems happened.

Problem Possible Cause Solutions

1. A hissing noise

sounds like

water-spraying.

1.Capillary Tube has sharp burrs around

opening edge.

1.Use a oxygen welding machine to heat

up Capillary Solder Joint, and remove

Capillary Tube from Evaporator. (Figure.6

& Figure 9)

2. Use a small Mill File to smooth all burrs

around opening edge.

Caution: Do not allow any metal

particles dropped into

Capillary Tube.

2. Capillary Tube was inserted into

Evaporator too far.

1.Re-Insert Capillary Tube into Evaporator

with depth less than 15mm, Re-solder it

and wrap it with Shock-absorbing Clay .

2. Re-do vacuum extraction and re-charge

Refrigerant. (Page 2)

2. A loud noise sounds

like vibrating and

clicking.

Capillary touched Baffle Board and other

parts

1.Adjust position of Capillary to keep a

proper distance from Baffle Board or other

parts

2.Wrap tube with Shock-absorbing Clay.

3. A low and deep

noise sounds like

gurgling

The unit was not upright during moving,

loading/unloading, transportation,

compressor oil flowed into tube, which

caused tube jam.

1. Clean tubes;

2. Re-do vacuum extraction

3. Re-charge Refrigerant. (Page 2)

Terminal

Screws

(2pcs)

１４

Capillary

Solder Joint

Discharge

(Low Pressure)

Solder Joint

Evaporator

(Temp.Sensor)

Discharge Tube

(Lower Pressure)

Solder Joint

Capillary

Solder Joint

１５

EvaporatorIce-Up

Problem Possible Cause Solutions

1.Ice is built-up on

evaporator

1.Door is damaged or left open too long, too

much warmer/cooler air rushes into inner

cabinet from outside;

1.If Door is damaged, replace it with new

one;

2.Always close door tightly immediately

after opened;

1.Gasket is damaged or distorted a little, too

much warmer/cooler air rushes into inner

cabinet from outside;

1.If Gasket is damaged, replace it with

new one;

2. If Gasket is just a little distorted, Pls.

use a Hair dryer to heat distorted area up

gently until all gaps disappeared. (Fig.18)

2. Fan will be blocked,

even broken if Ice too

much.

Ice too much inside. Replace Fan with new one

(Fig.13), (Fig.14)

Temperature Unstable

Problem Possible Cause Solutions

Temperature Unstable Cooling Fan does not work, it is damaged or

broken

Replace Fan with new one

(Figure.14), (Figure.14-1)

Gasket

Hair Dryer

１６

ControlSystemFaults

■Temp. Sensor Fault

● After plugged, pls. check if temperature displayed is same as actual temperature detected in inner cabinet, if not,

pls. disassemble Sensor (Figure 5 & Figure 9) and check if Sensor Connector is loose, If not, that indicate Sensor

is broken, pls. replace it with new one.

(Temp.Sensor)

Power PCB

Cooling Fan

Control PCB

PCB Bracket

PCB Box

(Temp.Sensor)

Discharge Tube

(Lower Pressure)

Solder Joint

Capillary

Solder Joint

１７

●If fault Code ”LL” shown on display window, it indicates open circuit happened, pls.

replace the Sensor with new one. (Figure 19 & Figure 19-1)

● if fault Code ”HH” shown on display window, it indicates short circuit happened , pls.

replace the Sensor with new one. (Figure 19 & Figure 19-1)

■Temp. Sensor Replace . (Figure 19 & Figure 19-1)

Step 1: Remove all Shelves (Figure 1 & Figure 7);

Step 2: Remove Baffle Board and Control Box (Figure 5 & Figure 9);

Step3: Unplug all Terminal of Fan and Temp. Senor (Figure 5 & Figure 9);

Step 3 : Unscrew Screws of Temp. Senor, Remove Temp. Senor and Replace it with new one.

(Figure 19 & Figure 19-1)

1. For BU-22

(Temp.Sensor)

Terminal

For 7 Bottles

１８

2. For BU-58

■Display Error of LED Light

It is caused by Control PCB fault, remove and replace it with new one. (Figure 20 & Figure 21)

(Temp.Sensor)

For 19 Bottles

Terminals

Screws (2pcs)

Control PCB

Bracket

Control PCB

Phillips

Screwdriver

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