Skope SERENE SC430N User manual

Service Manual MAN80304 Rev. 1.0 Mar. 2021
SC430N
SERENE Upright Glass Door Fridge
from SKOPE

SC430N
SERENE Single Door Vertical Fridge
Service Manual
MAN80304
Rev. 1.0 Mar. 2021
© 2021 SKOPE Industries Limited. All rights reserved.
SKOPE Industries Limited reserve the right to alter specifications without notice.
is a registered trademark of SKOPE Industries Limited.
SKOPE INDUSTRIES LIMITED
Head Office
PO Box 1091, Christchurch
New Zealand
Freephone: 0800 947 5673
E-mail: skop[email protected]
Website: www.skope.com
Trademark Infringement
The SERENE trademark on this product is infringed if the owner, for the time
being, does any of the following:
• Applies the trade mark to the product after their state, condition, get-up or
packaging has been altered in any manner
• Alters, removes (including part removal) or obliterates (including part
obliteration) the trade mark on the product
• Applies any other trade mark to the product
• Adds to the product any written material that is likely to damage the
reputation of the trade mark
Notice of the above contractual obligations passes to:
• Successors or assignees of the buyer
• Future owners of the product

SERENE SC430N
Service Manual iii
CONTENTS
1Servicing Hydrocarbon
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2Specifications
Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3Product Functions & Main Features
Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Product promotion & selling points . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4Product Appearance
SC430N Overall Product View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5Product Instruction & Product Improvement
Product Main Technical Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .8
6Function Adjustment Method
Electrical Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
7Schematics & Wiring Diagram
Schematic SC430N Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8Working Principle and Parameters
Thermostat & Compressor Model Data. . . . . . . . . . . . . . . . . . . . . . . 11
Thermostat Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Compressor Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9Refrigeration Basic Parts
Sectional View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
10 Production Installation & Disassembly Process
Component Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
11 Troubleshooting
Typical Failures and Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
12 Servicing
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Refrigeration System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Before Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Gas Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Leak Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
On-Site Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Hydrocarbon Workshop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
13 Spare Parts
Main Assembly - SC430N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Unit Assembly - SC430N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Details of Exploded Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4Servicing Hydrocarbon
Service Manual
SERENE SC430N
1Servicing Hydrocarbon
Overview
This cooler utilises hydrocarbon (HC) R290 as its refrigerant. R290 is a
natural refrigerant that has a very low environmental impact.
Special service requirements are needed as R290 is a flammable
refrigerant.
Safety hazards
The main R290 safety hazards are:
Flammable refrigerant.
Venting of R290 and compressor oil.
Asphyxiation.
SKOPE does NOT recommend performing hazardous activities on the
refrigeration system. See “Refrigeration System” on page 18 for more
information including examples of hazardous activities.

5
SERENE SC430N
Specifications
Service Manual
2Specifications
Model
This service manual is applicable to the Haier SC430N bottom mount chiller.
detailed in the table below. Refer to the relevant product specification sheet
(available on the SKOPE website: www.skope.com) for specifications.
Series Model SKOPE ID
SERENE SC430N SC430N

6Product Functions & Main Features
Service Manual
SERENE SC430N
3Product Functions & Main Features
Product features
1. The refrigeration module, electronic control module and appearance of
SC430N and products are fully upgraded vertical refrigerators. The
product design climate type meets the ST climate type requirements.
2. The air duct combination design of fin evaporator + centrifugal fan is
adopted for the refrigeration part of the product, the cooling speed is
faster and more uniform, and the efficiency is higher and energy saving.
3. There is internal cabinet lighting, and a illuminated display box on the
cabinet top. The display box holds a sign decal that advertises various
graphic branding. This type of visual signage promotes the product to
the consumer and enhances the overall cabinet aesthetic.
4. The sign decal graphics or imagery can be applied to the side of the
cabinet. This improves product and brand awareness to the consumer.
5. The glass door has the customer's trademark, which is energized and
glows to better display the customer's brand image and highlight the
brand charm.
6. There are four swivel casters on the base for the flexible movement.
Product promotion & selling points
Overall curved appearance
Detachable light box
Tempered transparent glass door
Forced air-cooled circulation system in the box, fin evaporator with
high heat exchange efficiency.
Swivel casters (4 pcs) + front adjustable feet (2 pcs).

7
SERENE SC430N
Product Appearance
Service Manual
4Product Appearance
SC430N Overall Product View

8Product Instruction & Product Improvement
Service Manual
SERENE SC430N
5Product Instruction & Product Improvement
1. The refrigerant is R290.
2. The side panel at the top of the cabinet is formed as part of the side of
the cabinet.
3. SC430N uses Wanbao compressor for refrigeration and a electronic
controller.
4. The refrigeration system uses two DC centrifugal fans.
Product Main Technical Parameters
1. Refrigerator type description Unit Technical parameter
Refrigerator Type -Commercial refrigerator
Model -SC430N
Door Body Type -Transparent door
Colour -White/Grey
2. Main features
Power consumption kWh/24h 1.61
Total effective volume L420L
Effective volume of refrigerator
compartment L420L
Climate Class -S
Input total power W450W
Rated current A2.3A
Refrigerant -R290/50g
Defrost type
(refrigeration/freezing) -Timed natural defrost
Noise (sound power level) dB(A) 60
3. Electrical control
Electrical control method
(electronic/mechanical) -Electronic
Lighting Type -LED
4. Dimensions & instability
Body Size (D/W/H) mm 660 ×630 ×2208mm
Packing size (D/W/H) mm 720 ×740 ×2312mm
Net weight kg 102
Gross weight kg 112

9
SERENE SC430N
Function Adjustment Method
Service Manual
6Function Adjustment Method
Electrical Temperature Control
-88-
°C
Electrical Temperature
Control
A1 Temperature adjustment A2 Temperature adjustment B Temperature display C D Temperature adjustment icon E Lock icon F Compressor on icon
Function introduction
F EA1 A2
BC D
Start Connect electrical power, then display will be on and under unlock status; Icon-B will show actual tempera- ture Display lock & unlock When display is under lock status, push A1 & A2 together for 3 seconds then display will be unlocked and available for adjustment. When display is under unlock status, if pushing A1 & A2 together for 3 seconds, or if no any key is pushed in 30 seconds, display will be locked and lock icon will show. Pushing “ ” and “ ” together can switch between lock & unlock status.
When display flashes F3, it means sensor has problem. Please call 4006992008 for customer service. F3 will disappear only after problem solved.
Temperature Shift If the A1 or A2 control buttons are pushed while in unlock mode, the temperature will change by -1° or +1°. By holding either button continously will cycle through minus or positive temperatures. This can range from 0° to 8° degrees, up or down. Temperatures can be set-up within the system. After 5 seconds of initiating change, the system will save and lock the control system. Power-off memory The controller has power-off memory function. When not in use, its work status will be locked. Once operational the system will revert to last settings.
Default setup temperature is 5 °C. Adjusting at electrical temperature control panel is only for SC series electrical temperature products.
GPRS Model Instructions (for products with GPRS function) This cabinet has instant messaging function as a low power radio transmitter & receiver. When it’s on it will intermittently receive & transmit radio signal. Operator network system will control the transmitting power of module. This cabinet complies with the regulations regarding RF energy leakage of your country.
-
+

10 Schematics & Wiring Diagram
Service Manual
SERENE SC430N
7Schematics & Wiring Diagram
Schematic
SC430N Series
Wiring
Diagram
LAB80296 Rev. 1.0 Jan. 2021
SC430N
from SKOPE
L2: Box LED
F: Motor protector
L1: Light box LED
XP: Power plug
S2: Compressor switch
B1: Power PCB

S1: LED Lamp switch
M1/M2: Inner fan
E: Thermostat
RT: Starter
M: Compressor
M3: Cooling fan

XP
B1
S1
S2

F

11
SERENE SC430N
Working Principle and Parameters
Service Manual
8Working Principle and Parameters
Thermostat & Compressor Model Data
1. This series of refrigerators use electronic thermostats. The thermostat
temperature probes are fixed on the light pipe brackets on the left and
right sides of the evaporator in the box, and the compressor is controlled
on and off by sensing the air temperature in the box.
2. Light box lights, box lights, and glass door logo lights are all controlled
by the first rocker switch on the left side of the lower frame of the light
box.
3. The second rocker switch on the left side of the lower frame of the light
box is the refrigeration system switch, which controls the on and off, of
the compressor.
4. The electronic temperature control is installed on the right side of the
engine room and displayed on the right side of the shield.
Thermostat
Model The model, manufacturer and working parameters of the thermostat.
Compressor
Model Parameter table of compressor model, manufacturer, power, energy
efficiency ratio, cooling capacity, working current and starting current
Thermostat
model Factory Cold
Open
Warm
Off
Cold
Open
Cold
Off
Capillary
length
(mm)
0074000488BB
Zhengzhou
chuchang
Instrument
Co. Ltd
- - - - -
Compressor
model Factory Power
Energy
efficient
ratio
Cooling
capacity
Working
current
Starting
current
FTK66L
Guangzhou
Wanbao
Group
Compressor
Co.Ltd
213 1.55 330 1.12 8

12 Refrigeration Basic Parts
Service Manual
SERENE SC430N
9Refrigeration Basic Parts
Sectional View
1. Compressor 6. Capillary
2. Filter Drier 7. Return Air Pipe
3. Auxiliary condenser 8. Evaporator
4. Condenser 9. Evaporation Fan left
5. Condensing fan 10. Evaporation Fan right

13
SERENE SC430N
Production Installation & Disassembly Process
Service Manual
10 Production Installation & Disassembly Process
Component Removal
1. Unplug the cabinet from power supply before removing or installing
components.
2. To remove the front cover from the cabinet. Use a phillips screwdriver to
remove the two screws on the cover.
3. To remove rear guard or gain access to the cabinet back. Unscrew the two
rear cabinet stops. (Turn Counter-Clockwise)
Remove the seven screws
holding the rear guard (turn
counter-clockwise). You can
now replace the wiring
harness or have access to
cabinet refrigeration system.
4. To remove the compressor bottom plate. Unscrew the four screws (two
hexagon head and two round head screws). These fix the compressor
bottom plate from the front cover of the cassette (turn counter-clockwise)
Continued over page

14 Production Installation & Disassembly Process
Service Manual
SERENE SC430N
Remove the rear guard to get access (see step 3.) Disconnect the two
terminals of the power cord from the cassette.
Two round-head screws will need to be unscrewed. The compressor
bottom plate can be pulled out.
5. Unplug the wiring
harness connector
behind the sign panel
before removing the
sign panel.
First remove the white terminal box cover. Unplug the connecting
terminals, and then remove two screws on the left and right sign sides.
The sign panel can now be removed.
6. To remove the door from the cabinet. First the sign panel must be
removed as shown in steps above. Then remove the screws from
the door top hinge. Lift door up slightly to remove door.

15
SERENE SC430N
Production Installation & Disassembly Process
Service Manual
7. To disconnect or remove the controller. Remove the front cover from
the cabinet body (see step 1.) This will give internal access to the
refrigeration system. Remove the two screws holding the controller
bracket on the right-side of the panel.
Disconnect the wiring harness connector on the controller, and then
remove the controller. After the repair, reverse the process to
reassemble the components.

16 Troubleshooting
Service Manual
SERENE SC430N
11 Troubleshooting
Typical Failures and Solutions
Typical faults and solutions, common problem consultation.
Problem Cause Analysis Maintenance measures
Excessive noise
The freezer is not flat &
stable
Check whether the freezer is
placed flat and stable, and
whether any part of the
freezer touches other
objects.
Interference among unit
pipelines
Check if there is any
interference among the unit
pipelines. Resettle pipelines
if needed.
Compressor failure
If a noise is confirmed from
the compressor, replace the
compressor.
Fan blades interfere with
objects or obstacles
Check whether fan blades
are interfered with other
objects or obstacles
The temperature
inside the cabinet is
too low
The temperature controller
knob is in an inappropriate
position
Turn the temperature
controller knob
counterclockwise to the
proper position.
Fan failure
Check whether the fan in the
cabinet has stopped working
due to failure.
The temperature
inside the cabinet is
too high
The temperature controller
knob is in an inappropriate
position
Turn the temperature knob
clockwise to the appropriate
position
Door was opened too
frequently
Reduce the amount of
products in the cabinet, the
frequency of door openings,
and the door opening time.
Electric Leakage
Freezer grounding failure
Check the ground wire of the
freezer to make it well
grounded
Insulation failure of the
internal coil of the
compressor, cause a short
circuit.
Replace the compressor
The electrical system
becomes damp and the
insulation decreases, which
can cause leak damage.
Check carefully. If the
insulator is severely
damaged, please replace or
put the damp electric device
into a drying box to dry.

17
SERENE SC430N
Servicing
Service Manual
12 Servicing
Cleaning
Cabinet Wipe the inside and outside of the cabinet with a damp cloth, taking care to
keep moisture away from electrical parts. As with any maintenance, ensure
the fridge is unplugged from the power supply before cleaning.
Condenser
Coil To ensure trouble-free performance, the condenser coil must be kept clean.
We strongly urge monthly cleaning with a soft brush to remove dust and fluff.
A more thorough cleaning is required by qualified service personnel every
six months. The condenser coil must be kept clean for efficient and reliable
operation.
The condenser coil is located at the front of the cabinet. Unscrew and
remove the rear grille to access the condenser coil for cleaning.
Lighting
The cabinet and sign LED lights are all non-serviceable and must not be
tampered with in any way. If a light is suspected of being faulty, arrange a
service call.
WARNING
Unplug the fridge from the power supply before cleaning the
condenser coil.
Condenser coil

18 Servicing
Service Manual
SERENE SC430N
Refrigeration System
Before
Servicing Overview
Ensure you have read and understand this manual before commencing with
any servicing.
Important. Ensure the following before servicing:
SKOPE hydrocarbon refrigeration systems must only be serviced by
appropriately skilled refrigeration mechanics.
Servicing of sealed refrigeration system must be completed at a
hydrocarbon workshop/service area with dedicated hydrocarbon
equipment and personal protective equipment.
All local hydrocarbon storage and handling regulations and
procedures must be adhered to at all times.
Ensure all electronic controller alarms diagnostics and refrigeration system
diagnostics are performed to confirm a refrigeration system fault is present.
Check all components such as the electronic controller and electrical
systems.
Safety hazards
The main hydrocarbon safety hazards are:
Flammable refrigerant.
Venting of hydrocarbon and compressor oil.
Asphyxiation.
Refrigerant identification
The cabinet rating label (located in the upper inside of the cabinet) states the
refrigerant type. In addition to this, warning labels are fitted to hydrocarbon
refrigeration coolers to indicate the use of R290 refrigerant.
Personal Protective Equipment
Ensure all required P.P.E is used correctly during servicing.
Service equipment
All refrigeration service tools must be hydrocarbon compliant and any
electrical equipment that could be exposed to the refrigerant must be
intrinsically safe. ONLY dedicated hydrocarbon service equipment may be
used.
In addition to standard tools for accessing and removing parts, specialist
tools are required when completing refrigeration system service tasks
detailed in this manual:
Intrinsically safe vacuum pump.
Dedicated hydrocarbon gauges.
Intrinsically safe hydrocarbon combustible gas leak detector.
Intrinsically safe scales to 0.1gm accuracy.
Well ventilated work area.
IMPORTANT
Use only dedicated hydrocarbon SKOPE OEM spare parts.
DO NOT use alternative parts.
For safety compliance, only SKOPE supplied components specified
for the appliance shall be used for repairs.

19
SERENE SC430N
Servicing
Service Manual
Gas Detector A gas detector is required and must be used when servicing HC units. A gas
detector is a safety device for Hydrocarbon gas to warn the technician that
hazardous flammable gas is present.
Leak Detector A leak detector is recommended for servicing HC units. It is used to track
and locate the source of Hydrocarbon gas leaks.
On-Site Work The service technician must have required knowledge, skills and tools to
proceed with on-site refrigeration sealed system diagnostics.
Minimum knowledge and skills
Experience and qualifications suitable for work on a flammable
refrigeration system.
Performs no unsafe activity.
Minimum tools and equipment
Hydrocarbon gas detector
Safety signage - suitable to create a safe work zone 1.5m around the
cabinet.
Refrigeration gauge set - suitable for R290 flammable refrigerant.
Bullet valves/line piercing valves suitable for 6mm tube.
Service vehicle
Suitable for transporting flammable gas (being HC refrigeration
systems). Vehicle storage area must be well ventilated externally,
and not ventilated into the vehicle. There must be no ignition sources
in the storage area, nor any areas where the gas may pool.
Must be able to transport swap units.
Should carry minimum SKOPE HC service parts.
Hydrocarbon
Workshop The following tools and equipment are required in the hydrocarbon
workshop:
Hydrocarbon Leak Detector.
Dedicated Hazardous workshop Area - suitable for servicing and
release of flammable refrigerant.
Refrigeration Gauge set - suitable for R290 flammable refrigerant.
Dry Nitrogen - suitable for purging and high pressure testing.
Refrigeration Vacuum pump rated as suitable for use with R290 (by
Vacuum pump supplier).
Charging scales rated as suitable for use with R290 (by scales
supplier), accuracy to 1.0gm.
R290 refrigerant supply cylinder.

20 Spare Parts
Service Manual
SERENE SC430N
13 Spare Parts
Main Assembly - SC430N