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: (03) 983 3896
E-mail: enquiry@skope.co.nz
Australia
SKOPE AUSTRALIA PTY LTD
A.C.N. 000 384 270
PO Box 6493, Wetherill Park
NSW 2164, Australia
Freephone: 1800 121 535
Fax: 1800 121 533
E-mail: enquiry@skope.com.au
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
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SK700
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
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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: C
5H10/C5H12
Dimensions
Height: 2195mm - with standard castors fitted
2215 to 2230mm - with optional adjustable castors
Width: 740mm
Depth: 764mm
Floor area:
0.57m
2
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
8
SK700
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
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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 products. 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 reinsert 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
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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 refrigerant 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
21
SK700
SKOPE Curved Door Vertical Chiller
Compressor not pumping efficiently
Where the frosting effect is not as cold as it should be. Symptoms
include: compressor body hotter than normal, condenser cooler
than normal, and the compressor may make an unusual hissing
sound. All of these symptoms depend on the severity of the problem.
The only way to prove a pumping problem is to perform a compressor pump-down test: braze closed compressor suction line, Open
discharge line; then run the compressor to pull a vacuum on a vacu
um gauge. The compressor should pull down to approximately 30"
(inches) vacuum then turn the compressor off and this vacuum must
be held without any loss for 5 minutes. If the Compressor does not
pass these tests; it is not pumping efficiently and must be replaced.
There are different methods to proving pumping efficiency. If the test
is performed with a system charged with refrigerant, a deep vacuum
will not be achieved.
Capillary restriction
With a totally blocked capillary, there will be no refrigeration effect. A
partially blocked capillary may have similar symptoms to a system
being short of refrigerant. Flush a restricted capillary with dry nitro
-
gen. If the capillary will not clear, it must be replaced.
After the repair, the drier must be replaced (every time the refrigeration system is opened, the drier must be replaced). The Cyclone®
must be fully evacuated and charged to the volume of refrigerant
indicated on the Cyclone® serial/rating label. All service lines must
be purged.
Finally, pinch-off the gauge process lines (or remove line piercing
valves) and braze the system closed. SKOPE recommend against
leaving service valves in the system as these are prone to leak (and
are open to abuse). Perform a final system leak test.
SERVICE INSTRUCTIONS
4
22
SK700
SKOPE Curved Door Vertical Chiller
Refrigerant R134a Handling Precautions
It is important to maintain dedicated HFC service equipment and
parts:
• Refrigeration gauges
• Service lines / Fittings
•Vacuum Pump
• Charging equipment
•Driers
• Compressors
• Temperature / Pressure chart
HFC (R134a) refrigeration systems require special service procedures because of the highly hygroscopic (moisture sensitive) polyolester (POE) compressor oil:
• The system (especially compressor) must only be open for the
very minimum time (to prevent moisture ingression). All parts
required for servicing must be at hand - before the system is
opened, and there should be no interruption until the system is
on the vacuum pump (or hermetically sealed).
• The system must not be open for longer than 20 minutes max.
• The drier must be replaced every time the system is opened.
• Clean work practices are essential.
• SKOPE recommend brazing the system closed after service - as
valves are prone to leak due to the nature of R134a.
Important:
Every time the refrigeration system is opened, the drier MUST be
replaced.
SERVICE INSTRUCTIONS
4
23
SK700
SKOPE Curved Door Vertical Chiller
4.5 Pressure Temperature Chart
TEMPERATURE R134a R404A
°F °C KPa psig KPa psig
-29.2 -34 -32 9.4 71 10
-27.4 -33 -28 8.4 79 11
-25.6 -32 -25 7.3 86 13
-23.8 -31 -21 6.2 94 14
-22.0 -30 -17 5.0 103 15
-20.0 -29 -13 3.8 111 16
-18.4 -28 -9 2.6 120 17
-16.6 -27 -4 1.3 129 19
-14.8 -26 0 0.0 138 20
-13.0 -25 5 0.7 148 21
-11.2 -24 10 1.4 158 23
-9.4 -23 15 2.2 168 24
-7.6 -22 20 2.9 179 26
-5.8 -21 26 3.7 189 27
-4.0 -20 31 4.5 200 29
-2.2 -19 37 5.4 212 31
-0.4 -18 43 6.3 224 32
1.4 -17 49 7.2 236 34
3.2 -16 56 8.1 248 36
5.0 -15 63 9.1 261 38
6.8 -14 69 10.0 274 40
8.6 -13 77 11 .0 288 42
10.4 -12 84 12.0 302 44
12.2 -11 91 13.0 316 46
14.0 -10 99 14.0 331 48
15.8 -9 107 16.0 346 50
17.6 -8 11 6 17.0 361 52
19.4 -7 124 18.0 377 55
21.2 -6 133 19.0 393 57
23.0 -5 142 21.0 410 59
24.8 -4 151 22.0 427 62
26.6 -3 161 23.0 445 65
28.4 -2 171 25.0 463 67
30.2 -1 181 26.0 481 70
32.0 0 192 28.0 500 73
33.8 1 202 29.0 519 75
35.6 2 213 31.0 539 78
37.4 3 225 33.0 559 81
39.2 4 237 34.0 580 84
41.0 5 249 36.0 601 87
42.8 6 261 38.0 623 90
44.6 7 274 40.0 645 94
46.8 8 287 42.0 668 97
48.2 9 300 44.0 691 100
50.0 10 314 46.0 715 104
SERVICE INSTRUCTIONS
4
Table 2: Pressure Temperature Chart
24
SK700
SKOPE Curved Door Vertical Chiller
4.6 Trouble Shooting
Complaint Possible Cause Repair
1. Cabinet not
operating
- lights etc not
going.
Loss of power supply. Check power supply.
High pressure switch cut-out, due to
over heating.
Check, and clean condenser.
Check unit operation, and reset
pressure switch (see p.7).
2. Compressor
will not start
- no hum.
Fuse removed or blown. No power. Replace fuse. Check reason.
Overload protector tripped. Refer to electrical section.
Thermostat stuck in open position. Repair or replace control.
Thermostat off, due to cold location. Relocate control.
Wiring improper, or loose. Check wiring against diagram.
3. Compressor
will not start
- hums but trips
on overload
protector.
Improperly wired. Check wiring against diagram.
Low voltage to unit. Determine reason and correct.
Start capacitor defective on CSIR or
CSR motor.
Determine reason and replace.
Run capacitor defective on PSC
motor.
Determine reason and replace.
Relay failing to close. Determine reason and correct.
Replace if necessary.
Compressor motor has a winding
open or shorted.
Check resistance values.
Replace compressor if necessary.
Internal mechanical trouble in compressor.
Replace compressor.
SERVICE INSTRUCTIONS
4
Table 3: Trouble Shooting Chart - continued on next page
25
SK700
SKOPE Curved Door Vertical Chiller
4.6 Trouble Shooting
Complaint Possible Cause Repair
4. Compressor
starts, but
does not
switch off
- starts
winding.
Improperly wired. Check wiring against diagram.
Low voltage to unit. Determine reason and correct.
Relay failing to open, due to welded
contacts or relay incorrectly
mounted.
Determine reason and correct.
Replace if necessary.
Run capacitor defective on CSR
motor.
Determine reason and replace.
Excessively high discharge pressure.
Clean condenser. Check power
input. Possible overcharge,
insufficient condenser cooling,
or non-condensible gasses.
Compressor motor has winding open
or shorted. Check continuity and
resistance.
Replace compressor if faulty.
Internal mechanical trouble in compressor (tight). May be lubrication.
Replace compressor.
5. Compressor
starts and
runs, but
short cycles
on overload
protector
(relay may
chatter on
RSIR, CSIR
and CSR
motors).
Additional current passing through
overload protector.
Check wiring diagram. Check
for added fan motors etc.,
connected to wrong side of
protector.
Low voltage to unit. Determine reason and correct.
Overload protector defective. Check current, replace
protector.
Run capacitor defective on CSR
motor.
Determine reason and replace.
Excessive discharge pressure. Check condenser, check
ventilation, check for restrictions
in refrigeration system.
Suction pressure too high. Check for possibility of
misapplication.
Compressor too hot - insufficient
suction gas cooling.
Check refrigerant charge (fix
leak), add if necessary. Check
return vapour temperature and
suction superheat.
Comp’r motor has a winding shorted. Replace compressor.
SERVICE INSTRUCTIONS
4
Table 3: Trouble Shooting Chart - continued on next page
26
SK700
SKOPE Curved Door Vertical Chiller
4.6 Trouble Shooting
Complaint Possible Cause Repair
6. Unit runs OK,
but short
cycles.
Overload protector. See section 4 on p.21.
Thermostat: requires adjustment or
incorrectly positioned.
Adjust or relocate thermostat.
Incorrect refrigerant charge. Adjust refrigerant charge.
7. Unit operates
long or continuously.
Unsatisfactory
cabinet temperature.
Short of refrigerant. Fix leak, and add charge.
Overcharge of refrigerant. Remove refrigerant to correct
charge.
Thermostat not cooling correctly. Adjust thermostat (clockwise
colder), and check thermostat
bulb location. If necessary,
replace thermostat.
Freezer has excessive load. Establish load within limits.
Evaporator coil iced. Defrost evaporator, check
refrigeration. Check
thermostat. Check door
closing, seals etc.
Restriction in refrigeration system. Determine location and clear
restriction. Flush with dry
nitrogen. Replace component
if blockage will not clear.
Dirty condenser. Clean condenser. Advise client
how to regularly clean
condenser.
Inadequate air circulation. Internal: Improve air
movement, alloe airflow around
stock.
External: Remove any
restrictions to condensing
ventilation.
Compressor not pumping
efficiently.
Replace compressor.
Filter dirty (if applicable). Clean or replace.
Faulty fan motor. Check rotation. Replace if
necessary.
SERVICE INSTRUCTIONS
4
Table 3: Trouble Shooting Chart - continued on next page
27
SK700
SKOPE Curved Door Vertical Chiller
4.6 Trouble Shooting
Complaint Possible Cause Repair
8. Start capacitor
open, shorted
or blown.
Relay contact not opening
properly.
Clean contacts, or replace
relay if necessary.
Prolonged operation on start cycle
due to:
(a) Low voltage to unit.
(b) Improper relay.
(a) Determine reason and
correct.
(b) Replace relay.
Excessive short cycling. Determine reason for short
cycling (see section 5 on p.21),
and correct.
Improper capacitor. Determine correct size and
replace.
9. Relay defective
or burned out.
Incorrect relay. Check and replace.
Line voltage too high or too low. Determine reason and correct.
Excessive short cycling. Determine reason (see section
5 on p.21), and correct.
Relay being influenced by loose
vibrating mount.
Remount rigidly.
10. Suction line
frosted.
Evaporator fan not running. Determine reason and correct.
Overcharge of refrigerant capillary
systems.
Correct charge.
11. Unit noisy. Loose parts or mountings. Find and tighten.
Tubing rattle. Reform to be free of contact.
Bent fan blade causing vibration. Replace blade.
Fan motor bearing worn. Replace motor.
SERVICE INSTRUCTIONS
4
Table 3: Trouble Shooting Chart
28
SK700
SKOPE Curved Door Vertical Chiller
5.1 Model: SK700
Figure 2: Wiring Diagram
WIRING DIAGRAM
5
29
SK700
SKOPE Curved Door Vertical Chiller
5.1 Model: SK700
Item Part Description
1 Mains Supply Flex
2 Sign Unit
3 18 Watt Fluorescent Tube
4 20 Watt Ballast
5 Starter (3)
6 3.0 Amp Fuse
7 SKOPE Cyclone® Refrigeration Unit
8 Compressor - Danfoss SC12G
9 Relay
10 Start Capacitor
11 Control Box
12 Thermostat
13 Control Box Terminal Block
14 RFI Suppression Capacitor
15 Evaporator Fan Motor
16 Condenser Fan Motor
17 Socket Box
18 ENSTO Connector (2)
19 Control Panel
20 Side Light Assembly (R/H as standard, L/H optional)
21 58 Watt Fluorescent Tube
22 Heated Door (optional)
23 Cabinet Heater Wire (optional)
24 Fused Terminal Block
25 58/65 Watt Ballast (2)
26 Connector Block
27 Pressure Switch
28 Optional Digital Thermometer (with probe)
WIRING DIAGRAM
5
30
SK700
SKOPE Curved Door Vertical Chiller
6.1 Cabinet Assembly
Part Description SKOPE Part Number
CABINET
Ballast Cover V60AB/E06
Curved Wire Shelf WRKV6060/J50
Shelf Bracket V0973-99
Shelf Retaining Clip SPR9881
Dial Thermometer V5000/95
Fused Connector Block ELZ6461
Fuse Holder ELZ6462
3.0 Amp Ceramic Fuse ELZ6467
58/65 Watt Ballast (for interior sidelight) ELZ8103
Swivel Castor - Rear SXX4339
Lockable Swivel Castor - Front SXX4539
INTERIOR SIDE LIGHT
Side Light Assembly - R/H V5060/670R-32
58 Watt Fluorescent Tube ELL6267
Side Light Diffuser V5060/E71
Starter ELZ2840
Lamp Holder ELZ6270
Lamp & Starter Holder ELZ6271
SPARES
6
31
SK700
SKOPE Curved Door Vertical Chiller
6.2 Curved Door
Part Description SKOPE Part Number
Door Assembly - R/H - Low E (standard) V60AB/D03R
Door Assembly - L/H - Low E V60AB/D03L
Door Gasket GKT9672
Door Handle PLM9696BK
Door Handle Hole Plug PLM2248BK
Door Frame Hole Plug PLM2248GY
Bush PLM5075
Torsion Bar Assembly REF9673
Capstan TUR5100
Top Hinge Assembly - R/H V60AB/388-49
Top Hinge Assembly - L/H V60AB/389-49
Bottom Hinge - R/H V60AB/393-49
Bottom Hinge - L/H V60AB/394-49
SKOPE Badge NAM9685-BK/SV
SPARES
6
32
SK700
SKOPE Curved Door Vertical Chiller
6.3 Illuminated Sign
Part Description SKOPE Part Number
Illuminated Sign Assembly (packed) V60AB/S21
Curved Sign Panel V60AB/S27
Sign Side Panel - R/H V60AB/182R
Sign Side Panel - L/H V60AB/182L
Sign Back Panel - optional V6000/181
18 Watt Fluorescent Tube ELE5065
18/20 Watt Ballast ELZ1039
Starter ELZ2840
Lamp Holder ELZ6270
Lamp & Starter Holder ELZ6271
Fused Connector Block ELZ6461
Fuse Holder ELZ6462
3.0 Amp Ceramic Fuse ELZ6467
SPARES
6
33
SK700
SKOPE Curved Door Vertical Chiller
6.4 Refrigeration Unit
Part Description SKOPE Part Number
Refrigeration Unit Assembly (SK650-C) V6020R-128PSZ
Control Box Assembly V5500/E50EPSZ
Foamed Evaporator Box V5500/376
Foamed Evaporator Box Lid V5500/377
Compressor: Danfoss SC12G CPR6108
Evaporator Coil CLS4497
Condenser Coil CLS8140
Dryer DRY8783
Thermostat ELO7702
Pressure Switch ELS8505
Unit Base V5500/210-32
Discharge Line V6020/255
Condenser / Evaporator Motor ELM5304
Fan Blade FAN4100
RFI Suppression Capacitor ELC8068
SPARES
6
34
SK700
SKOPE Curved Door Vertical Chiller
6.5 Notes
SPARES
6
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