Skope SERENE SC112G User manual

Service Manual MAN10556 Rev. 3.4 Feb. 2020
SC112G
SERENE Four Glass Sided Chiller
Type: HSC112A/Z089
from SKOPE

SC112G
SERENE Four Glass Sided Chiller
Type: HSC112A/Z089
Service Manual
MAN10556
Rev. 3.4 Feb. 2020
© 2012 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
Fax: [phone]
E-mail: [email protected]
Website: www.skope.co.nz
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 SC112G
Service Manual iii
CONTENTS
1 Specifications
Chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electronic Controller
Electronic Controller Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Running the Chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Evaporator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Temperature Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Door Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Defrost Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Messages and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Controller Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Cold Climate Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
No-Downward Tendency Protection . . . . . . . . . . . . . . . . . . . . . . .9
Programming the Electronic Controller . . . . . . . . . . . . . . . . . . . . . . . 10
Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3 Wiring
Model: SC112G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4 Spare Parts
Cabinet Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Refrigeration System Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Replacement Procedures
Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Adjusting the Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Interior lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Bottom Sign Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Replacing Door Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Removing and Fitting Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adjusting Door Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Replacing Torsion Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Refrigeration System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Refrigeration Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Refrigeration System Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Refrigeration System Dismantling . . . . . . . . . . . . . . . . . . . . . . . .25
Evaporator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SERENE SC112G
Service Manual
iv
Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Power Supply and Surge Protector . . . . . . . . . . . . . . . . . . . . . . . 28
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Compressor Electrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Electronic Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Electronic Controller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Controller Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Control Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Evaporator Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Door Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6 Troubleshooting
Diagnostic Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5
SERENE SC112G
Specifications
Service Manual
1Specifications
Chiller
Model: SC112G
Description: SERENE Four Glass Sided Chiller
Type: HSC112A/Z089
Tools required for servicing may consist of the following:
Screwdriver with Pozidriv PZ1 and PZ2 bit
Small slotted screwdriver (for electrical connectors)
Dimensions
External Internal
Height 1080-1095mm 740mm
Width 470mm 340mm
Depth 470mm 350mm
Floor area 0.22m2
Refrigeration system: Bottom mounted, integral, electronically controlled refrigeration system
Electronic controller: CAREL S4
Refrigerant: R134a / 135g
Operating temperature range: +1°C to +7°C
Tested climate: 25°C @ 60% RH (climatic class 3)
Electrical: 220-240 Volts a.c. 50 Hz, single phase supply, 1.2 Amps
Nominal capacity: 235 Watts (@ -15°C SST) CECOMAF rating condition
Sign lighting: Bottom sign: 2 x horizontal LED lights (total 2W)
Internal lighting: 4 x vertical corner LED lights (total 8W)
Doors: 2 x double glazed, single Low-E, lockable, toughened glass swing doors
(RH hinged)
Shelves: 3 x adjustable height wire shelves (351mm x 357mm)
Internal volume: 109 litres
Total weight: 52 kg

6Electronic Controller
Service Manual
SERENE SC112G
2Electronic Controller
Electronic Controller Operations
Introduction The SC112G chiller is fitted with a CAREL S4 electronic controller. The
electronic controller is visible on the front panel and is housed inside the
controller box at the front of the refrigeration system.
The electronic controller controls and displays the chiller temperature and
signals temperature alarms. It uses two temperature probes within the
refrigeration system to collect data and runs the chiller accordingly.
The electronic controller is pre-programmed; SKOPE does not recommend
that the settings be changed unless it is absolutely necessary. To ensure
efficient operation, the electronic controller automatically forces a defrost
cycle when required.
IMPORTANT
The electronic controller must only be adjusted by an authorised
service agent.
Figure 1: CAREL S4
electronic controller

7
SERENE SC112G
Electronic Controller
Service Manual
Faceplate Because the electronic controller plays such an important role, it’s helpful to
know the parts of the faceplate you may use.
ES
12
3
4
5
68
7
No. Item Description
1
Digital display of cabinet temperature or messages.
The temperature is what the sensor inside the chiller detects,
and not necessarily the product temperature. However, they
may be very close depending on how the controller is set to
sense temperature.
2
Energy Save (up): Press to view the current chiller mode.
‘EnS’ = Energy Saving and ‘nor’ = Normal.
Press and hold for 3 seconds to switch the chiller between
‘Energy Save’ and ‘Normal’ mode.
3Set (mute): Press to mute the alarm. Press and hold to
access parameters.
4Light (down): Press and hold to switch the cabinet lights on
and off.
5
Defrost: ON when the defrost is activated. Flashes when the
activation of the defrost is temporarily delayed due to
procedures in progress.
6
Compressor: ON when the compressor and condenser fan
starts. Flashes when activation of the compressor is
temporarily delayed.
7Fan: ON when the internal cabinet fans are activated.
Flashes when activation of the fans is temporarily delayed.
8Alarm: ON when alarm is signalled.
ES

8Electronic Controller
Service Manual
SERENE SC112G
Running the Chiller
Operating
Modes The electronic controller will automatically switch the chiller between
‘Normal’ and ‘Energy Saving’ modes depending on usage. If the front door
(electronic controller side) is not opened for four hours, the chiller will
automatically enter Energy Saving mode and the sign and interior lights will
switch off. To manually switch the chiller between Normal and Energy
Saving modes, press and hold the Energy Save (up) button on the electronic
controller faceplate. The chiller can also be bought into Normal mode by
holding the front door (electronic controller side) open for up to ten seconds.
Compressor The compressor cycles on and off during Normal and Energy Saving modes.
It does not run when the chiller is in defrost mode. If the electronic controller
displays ‘Err’ there is a fault within the refrigeration system and the
compressor will not run.
Evaporator
Fan The evaporator fan starts a few minutes after the chiller is turned on and
runs continuously while the compressor is running or during defrost, and
cycles on and off while the compressor is off. It stops when the front door is
open or if the electronic controller displays ‘Err’ indicating a fault within the
refrigeration system.
Condenser
Fan The condenser fan runs continuously when the chiller is on except if the
electronic controller displays ‘Err’ indicating a fault within the refrigeration
system.
Temperature
Probes Two temperature probes feed data to the electronic controller - the control
probe and the evaporator probe. The control probe controls the chiller
temperature, provides the chiller temperature for the electronic controller to
display, and notifies the electronic controller of any erratic or abnormal
temperatures that could identify an issue within the refrigeration system.
The evaporator probe controls the refrigeration system defrost initiation and
termination.
Door Switch The chiller is fitted with a door switch below the front door (electronic
controller side). A small magnet in the door frame activates the switch. The
door switch tells the electronic controller to turn off the evaporator fan motor
(i.e. if door opened) during normal run operation, initiate Energy Saving
mode if the door is not opened for four hours and to reactivate Normal mode
if the door is opened for a period of time during night mode.
Defrost Cycle The first automatic defrost occurs 3 hours after the chiller is switched on. During
the defrost cycle the compressor stops and the evaporator fan runs
continuously. The defrost cycle will terminate (stop) when the evaporator
probe reaches ≥4
°C or after the defrost cycle has been running for 20 minutes.
Lighting The chiller is fitted with bottom sign lights and interior pillar lights. The lights
will come on when the chiller is initially plugged in. When in Normal mode
the sign and interior lights are on. When in Energy Saving mode the sign and
interior lights are off. Press the Light button on the electronic controller
faceplate to manually switch the sign and interior lights on and off (see
page 7).

9
SERENE SC112G
Electronic Controller
Service Manual
Messages and Alarms
Controller
Display The following table explains messages that the electronic controller displays
and related alarms. Alarms signal unexpected operational changes in the
chiller and can be muted by pressing the alarm mute (up) button on the
electronic controller faceplate (see page 7).
Display Description
The chiller is in ‘Normal’ mode and the electronic
controller displays the chiller temperature.
The chiller is in ‘Energy Saving’ mode. When in Energy
Saving mode the temperature inside the chiller is
moderated and the cabinet lights turn off. The lights
can be switched on and off by pressing the light button
on the controller faceplate, and the chiller can be
switched into ‘normal’ mode by pressing the Energy
Saving button on the electronic controller faceplate.
The front door has remained open for over two
minutes. An alarm sounds, and the compressor and
evaporator fan turn off.
Regulation probe fault.
Evaporator probe fault.
There is a refrigeration system error and the controller
turns the chiller off to avoid damage. An alarm sounds,
and the compressor and evaporator fan turn off.

10 Electronic Controller
Service Manual
SERENE SC112G
Programming the Electronic Controller
Parameters The parameter configuration program is set by SKOPE at the factory. A label
on the controller box indicates the parameter configuration program number
(e.g. the SC112G chiller uses program ‘088’).
The electronic controller parameters can be modified using the keypad.
Access to the parameters is protected by a password to prevent accidental
or unauthorised modifications. Ony an authorised service agent should
modify the parameters.
To access the parameters
1. Press and hold the Set (mute) button for 5 seconds until the display shows
‘PS’ (password)
2. Press the Set (mute) button. The display shows ‘0’.
3. Use the ES (up) and Light (down) buttons to select password ‘22’ (default
password).
4. Press the Set (mute) button to confirm the password. The display shows
‘PS’.
5. Use the ES (up) and Light (down) buttons to scroll the parameter codes and
locate the required parameter.
Parameter categories can be identified by the initial symbol or letter of the
code, and the icon displayed on the electronic controller faceplate:
6. Press the Set (mute) button to display the value associated with the
parameter code.
7. Use the ES (up) and Light (down) buttons to increase or decrease the value
of the parameter.
8. Press the Set (mute) button to temporarily save the new value. The display
shows the parameter code.
Note: If no buttons are pressed for 60 seconds or the power is disconnected
before the temporarily saved values are permanently saved, the temporarily
saved values will be cancelled and the previous setting will be restored.
9. If necessary, repeat steps 5 - 9 to change other parameters as required.
10. Press and hold the Set (mute) button for 3 seconds to permanently save the
parameters and exit the parameter menu.
Category Initial Icon
Probe parameters / -
Control parameters r -
Compressor parameters c
Defrost parameters d
Alarm parameters A
Fan parameters F

11
SERENE SC112G
Electronic Controller
Service Manual
Parameter list - SC112G program 088

12 Wiring
Service Manual
SERENE SC112G
3Wiring
Model: SC112G
Wire Colours
BK Black
BN Brown
RD Red
OG Orange
GN Green
BU Blue
GY Grey
WH White
GNYE Green-Yellow
Based upon IEC 757 Standard
Surge Protector
BN BU GNYE
BN
BN
BN
BK
BU
BU
BN
M
BU
12Vdc Power
Supply
N
L
-
+
M
BK
RD BU
WH
12Vdc Power
Supply
N
L
-
+
RD
BU
BK
RD
RD BK
All Cabinet
Lighting
Evap Temp.
Probe
Cabinet
Temp. Probe
BU
Evaporator
Motor
Condenser
Motor
L N E
Door
ACC Compressor
L
N
1
Run
Capacitor PTC
Relay
Start
Winding Main
Winding
Compressor
Motor Protector
CAREL
Controller
Comp
AUX 1
AUX 2
10
11
8
9
3
1
54
6 7

13
SERENE SC112G
Wiring
Service Manual
Notes

14 Spare Parts
Service Manual
SERENE SC112G
4Spare Parts
Cabinet Assembly
1
1
2
2
3
3
44
5
6
6
7
8
9
10
11
12
13
14
15
16 16
17
17
18
19
20 21
5
22
22
23

15
SERENE SC112G
Spare Parts
Service Manual
Parts — Cabinet
Item Description SKOPE Part No. Customer Part No.
1Glass door assembly HB0070807597A
2Top hinge HB0070109359
3Side panel HB0070204927
4Lower side panel HB0070204933
5LED strip light (bottom sign) HB0071800053
6Bottom sign panel (transparent) HB0070509671
7Lower control panel HB0070204936
8Electronic controller (CAREL S4) ELZ11478-102
Control probe ELZ1255
Evaprator probe ELZ7644
Door switch (including cable & magnet) HB0074091496
9Controller insert HB0070204937
10 Shelf clip HB0070204928
11 Wire shelf HB0070109355
12 Diffuser HB0070204930
13 Side glass HB0071400156
14 Door gasket HB0070204932
15 Lower side panel (with flex outlet) HB0070204933
16 LED reflector HB0070204935
17 Top cover bracket HB0070109297
18 Floor bracket HB0070109301
19 Door lock HB0070804947
20 Shelf support strip LH HB0070204934
21 Shelf support strip RH HB0070204934A
22 Light supply loom (supply from unit) HB0070400418
23 Light link loom (to link LED strips) HB0070402344
24 Refrigeration system assembly HB0070807879

16 Spare Parts
Service Manual
SERENE SC112G
Refrigeration System Assembly
1
2
3
4
5
6
7
8
8
8
9
10
11
11
11
12 13 14
15
16
16
16
17
18
19
18
20

17
SERENE SC112G
Spare Parts
Service Manual
Parts — Refrigeration System
Item Description SKOPE Part No. Customer Part No.
0Refrigeration system assembly HB0070807879
1Evaporator fan motor HB0074000370
2Evaporator tub HB0070509640
3Condenser fan motor HB0074000234
4Condenser fan blade HB0074000311
5Fan motor 12Vdc power supply HB0071800030
6LED lights 12Vdc power supply HB0071800044
7Evaporator coil HB0070700492
8Lower outer extrusion HB0070109356A
9Compressor electrics box assembly HB0074000114
10 Compressor HB0074000114
11 Adjustable foot HB0070101405
12 Condensate tray HB0070204929
13 Drier HB0060703262
14 Condenser coil HB0070700493
15 Surge protector HB0074600001
16 Base foot HB0070204924
17 Capacitor cover HB0070109553
18 Tub side support HB0070109349
19 Condenser fan bracket HB0070109354
20 Side chassis support HB0070109350

18 Replacement Procedures
Service Manual
SERENE SC112G
5Replacement Procedures
Shelves
Adjusting the
Shelves
The chiller is supplied with three wire shelves which may be positioned at
different heights to suit various products. Each shelf is held in place with four
shelf clips which engage in the corner shelf support strips.
To adjust the cabinet shelves
1. Remove the shelves from the chiller.
2. Remove the shelf clips from the four shelf support strips at each corner of the
chiller interior.
3. Establish the desired position for the shelves and securely engage a shelf clip
in each of the shelf support strips.
4. Sit the shelves onto the shelf support clips.
Shelf clip
Shelf support strip
Shelf
Figure 2: Shelf detail

19
SERENE SC112G
Replacement Procedures
Service Manual
Lights
The chiller is lit by four interior pillar lights and two bottom sign lights. All lights
are powered by a 12Vdc LED power supply located within the refrigeration
system (see page 23). If one or several individual light/s fail on a light strip, the
remaining lights will still recieve power and should work. If an LED strip is
damaged (and the circuit broken) no lights will go (including the sign lights). If
all of the lights are off, check operation via the light switch on the electronic
controller (see page 8) before replacing LED strip lighting.
Interior lights The cabinet interior is lit by four vertical corner pillar LED lights. Each corner
pillar light is made up of two LED strip lights (see page 15 for spare parts).
To replace a single LED interior light strip
1. Isolate the chiller from the power supply by unplugging from the wall socket.
2. Remove the shelves from the chiller.
3. Access the chiller interior
via the appropiate door
and un-clip the diffuser to
expose the failed LED
light strip.
4. Unplug the failed LED
strip and unscrew from the
pillar to remove.
5. Fit the new light and plug into the circuit. Refit the diffuser, refit the shelves
and test.

20 Replacement Procedures
Service Manual
SERENE SC112G
Bottom Sign
Lights The chiller has two bottom lit signs, one at the front and one at the back.
Each sign is lit by one LED strip light
(see page 15 for spare parts).
To replace a bottom sign light
1. Isolate the chiller from the power supply by unplugging from the wall socket.
2. Remove the lower bottom
panel by undoing the three
fixing screws, and remove
the sign panel and decal
out from the sign.
3. Unplug and unclip the
LED strip light, and
remove from the chiller.
4. Fit the new light and plug into the circuit. Reassemble and test.