Skope SK700 Service manual

SK700
SKOPE Curved Door Vertical Chiller
Display Series
Operating and Service Manual MAN0382 Rev. 1.1 December 2010 edition

SK700
SKOPE Curved Door Vertical Chiller
Designed and Manufactured by
New Zealand
SKOPE INDUSTRIES LIMITED
PO Box 1091, Christchurch
New Zealand
Freephone: 0800 947 5673
Fax: [phone]
E-mail: [email protected]
Australia
SKOPE AUSTRALIA PTY LTD
A.C.N. 000 384 270
PO Box 6493, Wetherill Park
NSW 2164, Australia
Freephone: 1800 121 535
Fax: [phone]
E-mail: [email protected]
www.skope.co.nz
CONTACT ADDRESSES
i

SK700
SKOPE Curved Door Vertical Chiller
SK700
Operating and Service Manual
MAN0382
Rev. 1.1 December 2010 edition.
Published by
SKOPE Industries Limited,
Christchurch, New Zealand.
Copyright © 2002
SKOPE Industries Limited.
All rights reserved.
SKOPE and CYCLONE are
registered trademarks of
SKOPE Industries Limited.
SKOPE Industries Limited
reserve the right to alter specifications
without notice.
ii

SK700
SKOPE Curved Door Vertical Chiller
1 SPECIFICATIONS
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2 Cabinet and Refrigeration Unit . . . . . . . . . . . . . . . . . . . . . . . 7
2INSTALLATION
2.1 Positioning of Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3 OPERATION
3.1 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Operation of Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.3 Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 SERVICE INSTRUCTIONS
4.1 Interior Side Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Curved Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Illuminated Sign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Pressure Temperature Chart . . . . . . . . . . . . . . . . . . . . . . . .23
4.6 Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5 WIRING DIAGRAM
5.1 Model: SK700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
6 SPARES
6.1 Cabinet Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.2 Curved Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.3 Illuminated Sign. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
6.4 Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.5 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
TABLE OF CONTENTS
iii

6SK700
SKOPE Curved Door Vertical Chiller
1.1 Introduction
When purchasing a SKOPE product, our customers put trust in us
to deliver upon a promise. They expect their SKOPE refrigerator to
be, amongst other things, a totally dependable high-performer,
features that capture and illustrate the key values that guide us as a
company. These values can be summarised as durability, reliability,
safety and relentlessness.
SK700
SKOPE Curved Door
Vertical Chiller
The new SK700 curved glass door
merchandiser is the most
sophisticated and chic in product
merchandising. The style and design
of the SK700 was recently
recognised by the Design Institute of
New Zealand, when it was
nominated as finalist in the 2002
Best Design Awards.
For maximum visual impact, to
enhance sales, the new SK700
merchandiser has a toughened
safety glass curved door, curved
fronted shelves, brilliantly lighted
interior, and curved illuminated sign
panel. The curved glass door provides additional single door
capacity and displayed product enhancement.
Based on SKOPE’s quality assured, leading refrigeration range, the
SK700 incorporates reliable and dependable SKOPE components
with easy spare part replacement.
SPECIFICATIONS
1

7
SK700
SKOPE Curved Door Vertical Chiller
1.2 Cabinet and Refrigeration Unit
Cabinet Construction
Exterior/Interior: White powdercoat on galvanised steel
Insulation: 50mm thick, polyurethane foam
Cyclo-iso Pentane blowing agent: C5H10/C5H12
Dimensions
Height: 2195mm - with standard castors fitted
2215 to 2230mm - with optional adjustable castors
Width: 740mm
Depth: 764mm
Floor area: 0.57m2
Internal volume: 700 litres
Refrigeration
Top mounted SKOPE Cyclone®refrigeration unit:
Nominal capacity: 610 Watts (dependent on models)
Compressor: Danfoss SC12G
Refrigerant: R134a
Charge: 340 grams
Electrical
230-240 Volts a.c. 50 Hz, single phase power supply
Run Amps: 4.83 Amps
Lighting
Interior side light with 1 x 58 Watt (Ø26mm) fluorescent tube
Illuminated Sign
370mm high curved sign with 1 x 18 Watt (Ø26mm) fluorescent tube
Doors
Self-closing, aluminium framed, double glazed, curved and toughened
safety glass
Shelves
6 x adjustable height, white plastic coated, curved steel wire shelves
SPECIFICATIONS
1
Table 1: Specifications

8SK700
SKOPE Curved Door Vertical Chiller
2.1 Positioning of Machine
The mains flex exits below the rear panel behind the refrigeration
unit. For convenience, the flex should be retrieved before the
machine is positioned, when walls and partitions may make access
difficult.
Ventilation
For efficient operation of machine, it is essential that adequate
ventilation be provided above the refrigeration unit. Maximum
recommended operating ambient temperature for the machine is
40°C. When positioning the machine, a gap must be left between the
top of the refrigeration unit and ceiling, of at least 200mm.
Siting Machine
When siting the machine, avoid direct sunlight, and warm draughts
etc. Adequate allowance should be made for door opening. The
door has an internal torsion bar which is pretensioned at the factory.
The machine must be positioned on a level surface for the door to
shut and seal correctly, and to prevent the condensate tray from
overflowing. Remove all packaging material from the shelves. Fit
shelf support brackets at the desired heights and relocate shelves.
2.2 Ventilation
Adequate ventilation of the refrigeration unit is essential. Air
surrounding condenser should not exceed 40°C. Never store card-
board cartons or other items on top of the refrigeration unit.
NOTE: High pressure switch will cut-out in ambient over 48°C (or
with restricted condenser). Refer to Trouble Shooting (p.20).
Warning:
Adequate ventilation of the refrigeration unit is essential.
INSTALLATION
2

9
SK700
SKOPE Curved Door Vertical Chiller
3.1 Safety Information
When using any electrical appliance, safety precautions should
always be observed. Read these instructions carefully, and retain for
future reference.
Warning:
Do NOT overload power supply.
Machine rated at 4.83 Amps @ 240 Volts
• Do not use this appliance for other than its intended use.
• Only use this appliance with voltage specified on the rating label.
• Ensure adequate ventilation of SKOPE refrigeration unit.
• Condenser coil MUST be kept clean. To ensure trouble free
performance, it is recommended that on a regular basis the unit
be isolated from the power supply and a vacuum cleaner used to
remove dust and fluff from the condenser.
• Be careful not to touch moving parts.
• Do NOT cover the grilles or block the entry or exhaust of airflow
by placing objects up against or on top of refrigeration unit.
• Do NOT probe any opening.
• Regulations require that all electrical work be carried out by
authorised persons. For your own safety and that of others,
ensure this is done.
• If the refrigeration unit is required to be installed or removed
from the cabinet, ensure all necessary safety precautions are
observed.
Caution:
Disconnect machine mains power supply before attempting to
perform any electrical service or maintenance.
OPERATION
3

10 SK700
SKOPE Curved Door Vertical Chiller
3.2 Operation of Machine
Plug in machine and check operation of the refrigeration unit and
lights. Compressor, evaporator and condenser fans should all oper-
ate initially. This may be verified by listening for compressor switch
on, and checking air movement out the bottom of the rear duct.
Checking Operation
• Compressor and condenser fan should switch off when cabinet
internal temperature reaches approximately 2°C, and on again
at approximately 4°C. The internal cabinet air will continue to
circulate at all times.
• The lights which illuminate the top sign and cabinet interior are
permanently on.
• Ensure the door gaskets form a good seal with the cabinet.
3.3 Loading
Shelves may be positioned at different heights to suit various prod-
ucts. Always ensure that the shelf clips are securely engaged in
each of the four shelf support strips. Support strips are marked ‘+’
for easy location of shelf clips.
Product
For even cooling and efficient operation, allow air space around
packages etc. Do not allow products to overhang the front of the
shelf as this could prevent the door from shutting or cause glass
breakage. Leave an airspace of at least 75mm (3") above packages
etc. on the top shelf.
OPERATION
3

11
SK700
SKOPE Curved Door Vertical Chiller
3.4 Cleaning
When necessary, wash both interior and exterior of cabinet with
soapy water. Exterior of cabinet may be waxed with automobile
polish for extra protection.
Condenser Coil
The condenser coil MUST be kept clean for efficient and reliable
operation. Clean with a brush and vacuum cleaner regularly.
Access to the condenser coil is gained by removing the sign unit.
See section 4.3 Illuminated Sign (p.15), for instructions on how to
remove the sign unit.
Caution:
The machine must be disconnected from the mains supply
before cleaning condenser.
OPERATION
3

12 SK700
SKOPE Curved Door Vertical Chiller
4.1 Interior Side Light
The fluorescent tube and starter are located inside the interior side
light, and may be replaced without removing shelves or product from
the cabinet. To replace the fluorescent tube and starter:
1. Disconnect cabinet from power supply.
2. Compress the back section of the diffuser, so that it disengages
from the aluminium housing and push the diffuser back, to gain
access to the light.
3. The fluorescent tube and starter can now be removed. Revolve
the tube until the pin position allows withdrawal.
4. Replace tube and starter as necessary (see p.30 for spares).
5. When refitting the diffuser, engage back section into side light
housing, and compress and snap front section of diffuser back
into place working progressively down the full length of light.
SERVICE INSTRUCTIONS
4
Tube Holder
Fluorescent Tube
Diffuser
Starter
COMPRESS
PUSH
Figure 1: Interior Side Light

13
SK700
SKOPE Curved Door Vertical Chiller
4.2 Curved Door
Door Alignment
This can be achieved by releasing the bottom hinge fixing bracket.
The bracket is provided with slots allowing alignment adjustment.
Door Gasket Replacement
The door gaskets simply clip into the door frame extrusion and may
be removed for repair or replacement simply by peeling from frame,
starting at corner. New gaskets, when fitted, may be lightly lubricat-
ed with a clear silicone grease or similar compound. This will lessen
the possibility of the gasket rolling. Should the gasket be out of
shape when in place, use hot air (i.e. from hair drier) to realign.
Door Removal
Disconnect cabinet from power supply. Slacken off door tension and
remove pin. Disconnect door wiring from terminals. Unscrew top
hinge and lift door clear of bottom pivot.
Door Repair
To repair torsion bar assembly; turn door upside down and pull out
old torsion bar. Angle torsion bar to clear the hook at end. Replace
parts as required and refit. Reconnect door wiring to terminals.
NOTE: Glass replacement is not considered economical as the
glass is fixed to the frame for integral strength. Door replacement is
recommended.
Door Tension
Door tension can be adjusted by rotating the capstan, mounted in
the bottom hinge bracket. To achieve this, slowly release tension on
the capstan, with a Ø2.5mm steel rod, and remove the split pin. With
the aid of another Ø2.5mm steel rod increase the tension, and re-
insert the split pin, to lock torsion position.
SERVICE INSTRUCTIONS
4

14 SK700
SKOPE Curved Door Vertical Chiller
Door Hinging Reversal (non heated)
In order to convert the hinging of a left hand door to a right hand (or
vice versa), the following procedure should be followed:
1. Disconnect cabinet from power supply.
0. Remove the sign unit assembly (see page 15 for instructions).
1. Remove the split pin from capstan (at bottom of the door).
2. Remove top hinge lock screw.
3. Remove the two fixing screws from the top hinge.
Note: Ensure the dor is well supported (ideally by a second
person), while the top hinge is removed.
4. Remove the torsion bar assembly. This can be achieved by
pulling the capstan out so that the door bush disengages from
the sheetmetal end panel.
5. Remove the top door bush from the other end of the door
6. Refit torsion bar assembly into the opposite end of door (from
original).
7. Refit the top door bush.
8. Fasten the new bottom hinge bracket.
9. Loosely locate the new top hinge bracket.
10. Position and locate the door assembly onto the bottom hinge
bracket.
11. Locate the top hinge bracket into the top door bush and secure
main fixing screws.
12. Fit top hinge lock screw.
13. Re-torsion door using Ø2.5mm steel rods, and refit the split pin.
14. Fit new SKOPE badge (ensure to remove original badge).
SERVICE INSTRUCTIONS
4

15
SK700
SKOPE Curved Door Vertical Chiller
4.3 Illuminated Sign
Replacing fluorescent tube, starter or fuse
Internal access to the sign unit may be gained with the sign unit still
attached to the cabinet. To replace fluorescent tube, starter or fuse:
1. Disconnect cabinet from power supply
2. Lift the sign top panel upwards, so the sign panel can be
removed.
3. The fluorescent tube, starter and fuse can now be accessed for
replacement (see page 32 for spare parts).
4. When refitting the curved sign panel, carefully slide the panel
(with edge strips fitted to top and bottom of panel) into the end
locators. Engage edge strips into horizontal locators.
SERVICE INSTRUCTIONS
4
Figure 2: Accessing Sign Parts
End Locators
Starter
Fuse
Edge Strips
Curved Sign Panel
Fluorescent Tube
Horizontal
Locating Brackets
Sign Unit Assembly

16 SK700
SKOPE Curved Door Vertical Chiller
Sign Unit Removal
To remove the complete sign unit assembly from the cabinet:
1. Lift the sign unit vertically, releasing it from its keyhole
positioning slots.
2. Unplug the sign power flex, and remove sign unit from the
cabinet.
SERVICE INSTRUCTIONS
4
Figure 3: Removing Sign Unit
Sign Unit Assembly
Sign Power Flex
Sign Side Panel
Refrigeration Unit

17
SK700
SKOPE Curved Door Vertical Chiller
Sign Side Panel Removal
To remove the sign side panels from top of canbinet:
1. Loosen the securing screws, holding side panels to cabinet top.
2. Slide the side panel forward to disengage the keyholes.
3. If the optional sign back panel is fitted, this must be unclipped
and removed first.
SERVICE INSTRUCTIONS
4
Sign Side Panel - R/H
Sign Side Panel - L/H
Optional Sign
Back Panel
Unit Power Socket
Sign Unit Assembly
Figure 4: Removing Sign Side Panels

18 SK700
SKOPE Curved Door Vertical Chiller
4.4 Refrigeration Unit
The SKOPE Cyclone® unit is a self-contained refrigeration module,
which aligns with port holes on top of the cabinet. Air is drawn
through the evaporator and blown down the back duct. Air returns to
the evaporator through the roof port hole.
Condenser fan motor, evaporator fan motor, and thermostat may be
serviced with refrigeration unit in place (see page 33 for spares).
To provide easier access, the sign unit, side panels, and sign back
panel may be removed, and the refrigeration unit unbolted and shift-
ed or removed completely. See section 4.3 (page 15).
SKOPE Refrigeration Unit Removal
1. Disconnect power supply from unit.
2. Remove sign unit and side panels. See section 4.3 (page 15).
3. Undo bolt or screw at right hand side of the evaporator box,
then lift the complete unit to the right.
4. Turn unit until the lifting handles are facing the front.
5. The unit may now be removed from cabinet.
Caution:
The refrigeration unit weight is approximately 37kg. Ensure all
hazards are allowed for when removing unit.
Steps or platform about 1 metre high is suggested, to allow the
unit to be lifted, carried, and put down at about waist height.
Warning:
Avoid damage to the underside sealing strip, by not dragging
the unit. If damage to the seal occurs, it must be repaired prior
to re-installation.
SERVICE INSTRUCTIONS
4

19
SK700
SKOPE Curved Door Vertical Chiller
Condenser Fan/Motor Replacement
1. Remove cover from control box, and withdraw the motor flex.
2. Undo two top screws from the mounting bracket, and remove
complete fan motor assembly (see page 33 for spare parts).
3. Remove securing cable ties if necessary.
Evaporator Fan/Motor Replacement
1. Undo four screws from the evaporator box lid, and remove lid
by lifting vertically.
2. Remove cover from the control box, and withdraw motor flex.
Carefully withdraw flex through the wall of evaporator box.
3. Undo two top screws from the mounting bracket, and remove
complete fan motor assembly (see page 33 for spare parts).
4. Ensure motor bracket is replaced in correct position.
5. On replacement, carefully reseal flex hole in evaporator box.
Thermostat Setting
The thermostat is pre-set to give an internal air temperature of
between 2°C and 4°C, and in normal circumstances should not
require adjustment. If thermostat adjustment is required: to make
colder - turn clockwise, to make warmer - turn anti-clockwise.
Thermostat Replacement
1. Undo the four screws from evaporator box lid, and remove lid
by lifting vertically.
2. Withdraw the capillary from evaporator, noting original position
and length into coil.
3. Remove the cover from control box, or undo the thermostat
bracket and remove thermostat (see page 33 for spare parts).
4. When refitting thermostat, ensure the capillary is fitted back in
the original position.
SERVICE INSTRUCTIONS
4

20 SK700
SKOPE Curved Door Vertical Chiller
Recommended Service Procedures
SKOPE recommend the SKOPE Cyclone® demountability and
exchangeability philosophy, which in essence means:
The customer must not be inconvenienced during system
maintenance.
In the unlikely event of Refrigeration failure, an exchange unit is
simply swapped in a matter of minutes. There is no cabinet down
time or unloading product. In one 5 minute visit, the customer's
inconvenience ends. The faulty Cyclone® is then removed to the
workshop for repair as time allows.
For a suspected refrigerant problem
Disconnect the evaporator fan motor and with the system running, a
‘frost line’ will become obvious (after approximately 5 minutes):
Entire evaporator, accumulator, and suction line right up to compres-
sor must be frosting. Compressor at suction inlet will sweat.
If these conditions are not met, the system is faulty, either short of
refrigerant, compressor not pumping efficiently, or capillary restric-
tion. The system must then be opened (see Refrigerant R134a
Handling Precautions section) and gauges temporarily fitted (i.e.
either temporarily fit line piercing valves, or braze in service lines).
Short of refrigerant
Where the frosting effect is shorter than required (unless all refriger-
ant is lost, where there is no frosting effect). Only a small amount of
refrigerant will exit the system. A leak test (refrigerant / dry nitrogen
mix, up to 250 psig) should be performed to locate the leak. If no leak
is found, a pressure test should be performed (dry nitrogen only, up
to 250 psig) if there is no pressure drop over 24 hours, the fault
should be treated as a capillary restriction.
SERVICE INSTRUCTIONS
4