Skope SK1000 Service manual

SK1000
SKOPE Top Mounted Two Door Chiller
Vertical Display and Storage
Operating and Service Manual MAN0712 Rev. 1.0 Dec. 2003 edition

SK1000
SKOPE Top Mounted 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]
Website: www.skope.co.nz
Australia
SKOPE AUSTRALIA PTY LTD
A.C.N. 000 384 270
PO Box 7543, Baulkham Hills B.C.
NSW 2153, Australia
Freephone: 1800 121 535
Fax: [phone]
E-mail: [email protected]
Website: www.skope.com.au
CONTACT ADDRESSES
i

SK1000
SKOPE Top Mounted Vertical Chiller
SK1000
Operating and Service Manual
MAN0712
Rev. 1.0 Dec. 2003 edition.
Published by
SKOPE Industries Limited,
Christchurch, New Zealand.
Copyright © 2003
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

SK1000
SKOPE Top Mounted Vertical Chiller
1 SPECIFICATIONS
1.1 Cabinet and Refrigeration Unit . . . . . . . . . . . . . . . . . . . . . . . 6
2INSTALLATION
2.1 Positioning of Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 OPERATION
3.1 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Operation of Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.5 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4 SERVICE INSTRUCTIONS
4.1 Interior Side Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Glass Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.3 Solid Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.4 Sign Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.5 Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Pressure Temperature Chart . . . . . . . . . . . . . . . . . . . . . . . .24
4.7 Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 WIRING DIAGRAM
5.1 Model: SK1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
6 SPARES
6.1 Cabinet Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
6.2 Interior Side Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.3 Glass Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
6.4 Solid Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
6.5 Illuminated Sign. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.6 Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
TABLE OF CONTENTS
iii

6SK1000
SKOPE Top Mounted Vertical Chiller
1.1 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
Width: 1130mm
Depth: 700mm
Floor area: 0.79m2
Internal volume: 980 litres
Refrigeration
Top mounted SKOPE Cyclone®refrigeration unit:
Nominal capacity: 820 Watts
Compressor: Danfoss SC12G
Refrigerant: R134a
Charge: 400 grams
Electrical
230-240 Volts a.c. 50 Hz, single phase power supply
Run Amps: 5.2 Amps
Lighting
2 x interior side lights: 58 Watt fluorescent tube, Ø26mm x 1524mm
Illuminated Sign
370mm high flat sign: 1 x 30 Watt fluorescent tube, Ø26 x 915mm
Doors
Self-closing, aluminium framed, double glazed, toughened safety glass
Shelves
Adjustable height, white powder coated, steel wire shelves
SPECIFICATIONS
1
Table 1: Specifications

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SK1000
SKOPE Top Mounted Vertical Chiller
2.1 Positioning of Machine
Mains Flex
The mains flex exits below the rear panel behind the refrigeration
units. For convenience, the flex should be retrieved before the
machine is positioned, when walls and partitions may make access
difficult.
Siting chiller
When siting the chiller, avoid direct sunlight, and warm draughts etc.
Adequate allowance should be made for door openings. The cabinet
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. Clip shelf support
brackets into the shelf support strips at the desired heights, and
relocate shelves.
Ventilation
When positioning the chiller, a gap must be left between the top of
the sign panels and ceiling, of at least 200mm. For efficient opera-
tion of the chiller, it is essential that adequate ventilation be provided
above the refrigeration unit. Maximum recommended operating
ambient temperature is 40°C.
Never store cardboard cartons or other items on top of the
refrigeration unit.
INSTALLATION
2

8SK1000
SKOPE Top Mounted 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 5.2 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 the cabinet from mains power supply before
attempting any electrical servicing, cleaning or maintenance.
OPERATION
3

9
SK1000
SKOPE Top Mounted Vertical Chiller
3.2 Operation of Machine
Plug in machine and check operation of the refrigeration unit,
illuminated sign, and cabinet lights. The compressor, evaporator and
condenser fans should all operate initially. This may be verified by
listening for compressor switch-on, and by checking air movement
around the refrigeration unit and out of the rear duct inside the
cabinet.
Checking Operation
• Compressor and condenser fan should switch off when cabinet
internal temperature reaches approximately +1°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

10 SK1000
SKOPE Top Mounted Vertical Chiller
3.4 Cleaning
When necessary, wipe both the interior and exterior of the cabinet
with a damp cloth. Ensure the cabinet is disconnected from the
mains power supply before cleaning. The exterior of the cabinet may
be waxed with automobile polish for extra protection.
Do not wipe the sealant off the door gaskets, as the sealant ensures
the door gaskets form a good seal with the cabinet.
Periodic cleaning of the condenser coil is also recommended.
Condenser Coil
The condenser coil MUST be kept clean for efficient and reliable
operation. Clean the condenser coil with a brush and vacuum
cleaner regularly.
Access to the condenser coil is gained by removing the sign unit.
See page 16 for instructions on how to remove the sign unit.
The preventative maintenance recommendation is to clean the
condenser at one to three month intervals. Certain conditions may
necessitate more regular attendance, such as dusty, humid or
steamy environments.
Caution:
The cabinet MUST be disconnected from the mains power
supply before cleaning the condenser coil.
3.5 Servicing
Servicing should be carried out by an authorised service agent.
OPERATION
3

11
SK1000
SKOPE Top Mounted 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.33 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

12 SK1000
SKOPE Top Mounted Vertical Chiller
4.2 Glass Doors
Alignment
Door alignment can be achieved by releasing the bottom hinge
bracket, which is provided with slots allowing alignment adjustment,
enabling the bottom of the door to be moved sideways.
Gasket replacement
The door gaskets clip into the door gasket retainer extrusion and
may be removed for repair or replacement simply by peeling from
frame, starting at a corner.
New gaskets, when fitted, may be lightly lubricated with a clear sili-
cone 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.
SERVICE INSTRUCTIONS
4
Figure 2: Door Gasket Removal
Door Gasket
Gasket Retainer
Door Frame

13
SK1000
SKOPE Top Mounted Vertical Chiller
Glass Door tension
The glass door has an internal torsion bar, pretensioned at the facto-
ry, which enables the door to self-close. If necessary, door tension
can be further adjusted by rotating the capstan mounted in the
bottom hinge bracket. To adjust door tension:
1. Slowly release tension on the capstan, by turning the capstan
with a Ø2.5mm steel rod, and removing the split pin.
2. With the aid of another Ø2.5mm steel rod, increase the tension
by turning the capstan in the direction the door closes.
3. Once adequate tension has been achieved, re-insert the split
pin through the hole in the hinge bracket, to lock in position.
4. To check door tension; hold the door open approximately
100mm and let go of the door. The door should gently close,
with the door gasket forming an air tight seal with the cabinet.
In the event the door tension can no longer be adjusted, the torsion
bar may need replacing (see ‘Torsion bar replacement’, page 14).
SERVICE INSTRUCTIONS
4
Figure 3: Door Tension
Capstan
Split Pin
Ø2.5mm
steel rod
Bottom Hinge Bracket
Door
Door
alignment
adjustment
screw

14 SK1000
SKOPE Top Mounted Vertical Chiller
Torsion bar replacement
The torsion bar assembly is located inside the door frame, and can
be replaced if necessary. To replace the door torsion bar assembly:
1. Remove the door from cabinet.
2. Carefully lever out the bottom bush from the door frame, and
pull old torsion bar out from the door frame. The end of the
torsion bar will need manoeuvring, to allow the ‘flat hook’ end to
clear the hinge hole.
3. Remove existing capstan and bush from old torsion bar.
4. Thread the capstan, complete with the bush, over the ‘round
hook’ end of the new torsion bar (see figure 4 below). Ensure
the aluminium tube
moves freely up and
down the torsion bar.
5. Fit the new torsion bar
assembly into the door
frame. When the torsion
bar is correctly installed,
the capstan should not
turn.
6. Lightly tap bottom of
capstan into hinge hole,
until the bush is flush with
door frame.
Refit the door to cabinet, and
adjust tension (see ‘Glass
Door Tension’, page 13).
SERVICE INSTRUCTIONS
4
Aluminium Tube
Figure 4: Torsion Bar Assembly
Torsion Bar
‘Round Hook’ end
Bush
Capstan

15
SK1000
SKOPE Top Mounted Vertical Chiller
4.3 Solid Doors
Solid door removal
To remove the solid doors from the cabinet:
1. Remove bottom hinge screw from pivot point
2. Unbolt bottom hinge plate, and slide door down to remove from
top hinge.
Solid door tension
The solid door hinge mechanism has a preset tension, and is non-
adjustable. Ensure the square notch in the hinge plate mates with
the door hinge, when replacing.
SERVICE INSTRUCTIONS
4
Solid Door Hinge
Bracket
Solid Door Hinge
Mechanism
Square
Locating
Notch
Bottom Hinge
Screw
Spring Stop
Washer (2)
Figure 5: Solid Door Hinge Mechanism

16 SK1000
SKOPE Top Mounted Vertical Chiller
4.4 Sign Unit
The illuminated sign unit, located on top of the cabinet, houses a
fluorescent tube and electronic ballast. Internal access to the sign
unit may be gained with the sign unit still attached to the cabinet.
To replace Fluorescent Tube
To access the fluorescent tube, the curved sign panel must first be
removed from the sign unit. No tools are required for this procedure.
To remove the sign panel:
1. Disconnect cabinet from the power supply.
2. Start at one of the top corners of the sign unit and pull the sign
panel out from under the sign top cover (see figure 11 below).
3. Work along the length of the sign unit, pulling the sign panel out
as you go.
4. Carefully remove the sign panel away from the sign unit.
5. The fluorescent tube can now be accessed for replacement
(see figure 13, page 17).
SERVICE INSTRUCTIONS
4
Figure 12: Sign Corner Detail
Sign Top Cover
Corner Notch
SignPanel
End Strip
Sign Panel
Figure 11: Removing Sign Panel
Sign Top Cover
Corner
Notch

17
SK1000
SKOPE Top Mounted Vertical Chiller
To refit the curved sign panel:
1. Ensure both sign end strips are fitted to the sign panel.
2. Carefully fit the sign panel into the bottom sign cover, ensuring
the sign end strips are correctly positioned in both of the bottom
corner notches.
3. Locate one top corner of the sign panel into the corner notch of
the top cover. Ensure the end strip fits neatly into the corner
notch (see figure 12, page 16).
4. Use your thumbs to push the sign panel under the top cover,
working progressively along the full length of the panel. Ensure
the sign panel engages into the sign top along the full length of
the sign unit.
5. Ensure both the sign end strips fit neatly into the top and
bottom corner notches.
SERVICE INSTRUCTIONS
4
Figure 13: Sign Unit (with sign panel removed)
Fluorescent Tube
Sign Top Cover
Sign Panel
Sign ENSTO 3-pole Plug
Sign Unit
Centre Tie Wire
Sign Bottom Cover
Sign Panel
End Strip
Sign Wiring Cover

18 SK1000
SKOPE Top Mounted Vertical Chiller
To remove Sign Unit
For ease of servicing, the sign unit can be removed from the cabinet.
To remove the sign unit:
1. Unplug the sign ENSTO 3-pole plug from the left hand end of
the unit junction box (see figure 17, page 33).
2. Loosen, and turn the sign retaining clip on the top of each side
panel (see figure 15, below).
3. Lift the sign unit up, to separate the sign from the sign sides.
4. The sign unit can now be removed from the cabinet.
To remove Sign Side Panels
For ease of servicing, the sign side panels can be removed from the
cabinet. To remove the side panels:
1. Remove the sign back panel, by lifting up to disengage from the
side and unit separation panels (see figure 16, below).
2. Loosen the keyhole screws, holding side panels to cabinet top.
3. Slide the side panels forward to disengage the keyholes.
SERVICE INSTRUCTIONS
4
Figure 15: Sign Retaining Clip Figure 16: Sign Back Panel
Sign Retaining Clip Sign Side Panel
Sign Back
Panel

19
SK1000
SKOPE Top Mounted Vertical Chiller
4.5 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 the refrigeration unit in place (see page 29 for spare
parts).
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.
SKOPE Refrigeration Unit Removal
1. Disconnect power supply from unit.
2. Remove sign unit and side panels (see page 18).
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

20 SK1000
SKOPE Top Mounted 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 37 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 37 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 37 for spare parts).
4. When refitting thermostat, ensure the capillary is fitted back in
the original position.
SERVICE INSTRUCTIONS
4