Midea UR-PC160-DQ User manual

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Service Manual
Applicable Models
Model Code
UR-PC160-DQ
22033210000005
(The picture is only for reference, and specific appearance and configuration are subject to the real product)
Prepared by
R&D：Chen Feixiang
Reviewed by
QA：Wang Tao
SVC：Chen Lei
Approved by
R&D：Zhang Huawei
SVC：Guang Taoshuai

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Important Safety Notice
The Maintenance Manual is only for the use of maintenance personnel with certain experience and background
in electrical, electronic and mechanical field.
Any attempt to repair main devices may lead to personal injury and property loss.
Manufacturers or distributors are not responsible for the content of the Manual and interpretation thereof.
Midea Refrigerators
Technical Maintenance Manual
Copyright @2016
All rights reserved. Replication of all or part of the Manual in any forms shall not be allowed without written
approval by the Overseas Sales Corporation of Midea Refrigerators.

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Contents
1.Safety Warning Code................................................................................................................................. 5
1.1Warning for operation safety........................................................................................................... 5
1.2Safety instruction for refrigerant..................................................................................................... 8
2.Description for product features................................................................................................................ 9
3.Installation and commissioning............................................................................................................... 10
3.1Handling........................................................................................................................................ 10
3.2 Door Disassembly and Assembly(None)...................................................................................... 10
3.3 Installation location...................................................................................................................... 10
3.4Leveling of the refrigerator ........................................................................................................... 11
3.5Door reversal(None)...................................................................................................................... 11
3.6Installation of handle(None).......................................................................................................... 11
3.7 Installation of door lock(None).................................................................................................... 11
3.8 Adjustment to level the door(None)............................................................................................. 11
4.Terms....................................................................................................................................................... 11
4.1 Definition of model(None)........................................................................................................... 11
4.2Location of nameplate................................................................................................................... 11
5.Product specification............................................................................................................................... 12
5.1 Type specification（None）........................................................................................................ 12
5.2 Electrical parameters.................................................................................................................... 12
5.3Inside temperature......................................................................................................................... 13
5.4Defrosting parts（None）............................................................................................................ 13
5.5Circuit diagram.............................................................................................................................. 13
6.Internal view and dimension ................................................................................................................... 14
6.1Main parts and their names ........................................................................................................... 14
6.2External dimension........................................................................................................................ 14
7.Refrigerating piping system and circulating route of cooling air............................................................ 16
7.1 Refrigerating piping system ......................................................................................................... 16
7.2Circulating route of cooling air..................................................................................................... 16
8.Dismantling of parts................................................................................................................................ 17
8.2Parts inside the wine cabinet......................................................................................................... 17
8.3Light system(None)....................................................................................................................... 18
8.4Air duct components refrigeratingchamber and fan motor............................................................ 18
8.5Air duct components in freezing chamber and fan motor(None).................................................. 18
8.6Evaporator and temperature sensing system ................................................................................. 18
8.7Compressor case............................................................................................................................ 19
8.8Display and main control panel(None).......................................................................................... 21
8.9Bar counter(None)......................................................................................................................... 21
8.10 Water dispenser(None)............................................................................................................... 21
8.11 Ice maker(None)......................................................................................................................... 22
9. Function and operation........................................................................................................................... 23
9.1Operation panel............................................................................................................................. 23

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9.2Temperature control ...................................................................................................................... 23
9.3Give an alarm(None)..................................................................................................................... 23
9.4Failure code and solutions(None).................................................................................................. 23
9.5Defrost function............................................................................................................................. 23
9.6Compressor fan control(None)...................................................................................................... 23
9.7Self-diagnosis (None).................................................................................................................... 23
10.Circuit description................................................................................................................................. 24
10.1 Power Supply(None).................................................................................................................. 24
10.2 Test circuit for door switch(None).............................................................................................. 24
10.3 Temperature test circuit(None)................................................................................................... 24
10.4Freezer chamber fan motor circuit (None).................................................................................. 24
10.5refrigerating chamber fan motor circuit (None).......................................................................... 24
10.6Condensation fan circuit (None) ................................................................................................. 24
10.5 Fan motor circuit of the ventilation door(None) ........................................................................ 24
10.6Resistance value of the sensor (R/T) (None)............................................................................... 24
11.Troubleshooting Method....................................................................................................................... 24
11.1 Not cooling................................................................................................................................. 24
11.2 Not working of compressor........................................................................................................ 25
11.3 -Thermostat malfunction-Undercooling..................................................................................... 26
11.4 Light is not on............................................................................................................................. 26
11.5 Noise........................................................................................................................................... 27
12. Figures and details of repair parts(Documents are provided separately) ............................................. 27
12.1Figures......................................................................................................................................... 27
12.2List of parts and components....................................................................................................... 27
13Appendix:............................................................................................................................................... 27
13.1Electrical Schematic Diagram(None).......................................................................................... 27
13.2Refrigerator maintenance tooling and equipment and material................................................... 27

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1.Safety Warning Code
1.1Warning for operation safety

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1.2Safety instruction for refrigerant

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2.Description for product features
This product is provided with following features:
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
1）Integrative refrigeration chamber
2）Mechanical control
3）Polisher black tower with stainless steel trim
4）Holds most 1/2 and 1/4 size kegs

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3.Installation and commissioning
3.1Handling
1) Protect the refrigerator in moving it
Same as shown as left photo, please move it by
handcart with cushion
2) Remove all packing materials and bottom
cushion, then move into house for placement
3) After moving it to appropriate location, wait for
2 hours before power on.
3.2 Door Disassembly and Assembly(None)
The refrigerator door needs to be dismantled if it cannot enter the room in the whole.
3.3 Installation location
Location that is easy for ventilation shall be chosen
to facilitate heat dissipation, enhance its
performance and reduce the energy consumption.

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3.4Leveling of the refrigerator
If the refrigerator cannot be placed steadily,
adjust the footing to level it.
3.5Door reversal(None)
3.6Installation of handle(None)
3.7 Installation of door lock(None)
3.8 Adjustment to level the door(None)
4.Terms
4.1 Definition of model(None)
4.2Location of nameplate
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)

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5.Product specification
5.1 Type specification（None）
5.2 Electrical parameters
Product Name
UR-PC160-DQ
/
/
Product Code
22033210000005
/
/
Name
Item
Type
Specification
Specification
Specificati
on
Compressor
Compressor
/
EZ59E1C
/
/
Starter
PTC
QP2-4R7
/
/
Overload
protector
OLP
DRB18R61A1
/
/
Winding
resistance of
compressor
wiring
terminal
Rmc:8.8±7%Ω
Rsc: 7.5±7%Ω
Rms=Rmc+Rsc
(20℃)
/
/
Motor
Fan motor
of the
freezing
chamber
/
/
/
/
Ventilation
door of the
refrigeratin
g chamber
/
/
/
/
Condensati
on fan
/
/
/
/
Light inside
the
refrigerator
Lights
inside the
refrigeratin
g chamber
/
/
/
/
Switch of
the
refrigerator
door
/
/
/
/
Indicator
lamp
/
/
/
/

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5.3Inside temperature
Temperature tolerance ≤ 2°C
Compartment
The highest (°C)
Lowest (°C)
Refrigerating
7
0
5.4Defrosting parts（None）
5.5Circuit diagram

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6.Internal view and dimension
6.1Main parts and their names
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
1.Beer tower
2.Guardrail
3.Shelf
4.Evaporator
5.Beer can bottom pad
6.2External dimension
Front view
Side view
Down view
Open Door

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Maximum open angle of door(180°)
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)

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7.Refrigerating piping system and circulating route of cooling air
7.1 Refrigerating piping system
1Compressor→2Exhaust transition pipe→3condenser→4Dry filter →5Capillary tube→ 6Evaporator→7Return
transition pipe→1Compressor
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
7.2Circulating route of cooling air

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8.Dismantling of parts
8.1 Parts on the door
Door seal
Door seal is installed into door liner groove.
1）Open the wine cabinet door;
2）Take the door seal ①out of door liner.
8.2Parts inside the wine cabinet
Shelf
1）Lift up the shelf with a proper force and pull
it out towards yourself.
CO2 can mounting
1) Take down the two screws using a screwdriver
and get out the mouting.
Beer can bottom pad
1) Push up the beer can bottom pad from the
gap between the shell and the liner and take
it out.

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8.3Light system(None)
8.4Air duct components refrigeratingchamber and fan motor
Air duct components refrigeratingchamber
None
Fan motor of air duct
None
8.5Air duct components in freezing chamber and fan motor(None)
Disassembly and installation of Air duct
None
Fan motor of air duct
None
8.6Evaporator and temperature sensing system
Evaporator in freezing chamber
None
Components on the evaporator
Defrost thermostat
None
Fuse
None
Defrost sensor
None
Defrost heater
None
Evaporator in refrigerating chamber
1）Take down screws and gaskets on the
evaporator.
2）Remove the welding on inlet and outlet
tubes.
Components on the evaporator
Defrost sensor
None
Sensor
Sensor in freezing chamber
None
Sensor in refrigerating chamber
None
Sensor in Variable temperature chamber
None
Ambient temperature sensor
None
Thermostat

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1）Remove the knob
2）Loosen the nut
3）Pull out the thermostat box
4）Remove the thermostat and wire from the box
8.7Compressor case
Rear cover and compressor case
Rear cover and compressor case
1)Remove by cross screwdriver the screws fixing
back cover plate of compressor chamber
anticlockwise
2)Take the back cover plate of compressor
chamber upward.
Terminal box of the compressor

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1）Remove the screwsTwo screws outsideOne
screw inside
Remove the clipping stripSlowly pull it out
1. Remove the protective cover
1）Pry the protective cover slowly from the upper
part,
2）Pull it out and remove it.
2. Remove the starter
and protector
Unplug the starter and protector (you can use a
screwdriver to pry it slowly)
1. The reverse process can complete
installation.
/
Piping system in the compressor case