Skope SK1000 Operating And 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: [e-mail]
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: [e-mail]
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.

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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

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SK1000

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: C

5H10/C5H12

Dimensions

Height: 2195mm - with standard castors fitted
Width: 1130mm
Depth: 700mm
Floor area:

0.79m

2

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

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SK1000

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

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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 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

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

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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

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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 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.

SERVICE INSTRUCTIONS

4

Figure 2: Door Gasket Removal

Door Gasket

Gasket Retainer

Door Frame

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SK1000

SKOPE Top Mounted Vertical Chiller

Glass Door tension

The glass door has an internal torsion bar, pretensioned at the facto­ry, 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

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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 non­adjustable. 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

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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

Sign Panel
End Strip

Sign Panel

Figure 11: Removing Sign Panel

Sign Top Cover

Corner
Notch

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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

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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

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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

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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

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SK1000

SKOPE Top Mounted 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

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SK1000

SKOPE Top Mounted 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

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SK1000

SKOPE Top Mounted 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

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SK1000

SKOPE Top Mounted Vertical Chiller

4.6 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 -8 116 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

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SK1000

SKOPE Top Mounted Vertical Chiller

4.7 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

26

SK1000

SKOPE Top Mounted Vertical Chiller

4.7 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

27

SK1000

SKOPE Top Mounted Vertical Chiller

4.7 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
cabine

t tem-

perature.

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

28

SK1000

SKOPE Top Mounted Vertical Chiller

4.7 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

29

SK1000

SKOPE Top Mounted Vertical Chiller

Notes

SERVICE INSTRUCTIONS

4

30

SK1000

SKOPE Top Mounted Vertical Chiller

5.1 Model: SK1000

WIRING DIAGRAM

5

Figure 8: SK1000 Wiring Diagram

31

SK1000

SKOPE Top Mounted Vertical Chiller

5.1 Model: SK1000

Item Part Description

1 Mains Supply Flex
2 Sign Unit
3 30 Watt Fluorescent Tube
4 30 Watt Ballast
5 Starter (3)
6 Fused Connector Block with 3.0 Amp Fuse (2)
7 SKOPE Cyclone® Refrigeration Unit
8 Compressor - Danfoss SC12G
9 Relay

10 Start Capacitor

11 Control Box
12 Cabinet Heater Wire (optional)
13 Thermostat
14 RFI Suppression Capacitor
15 Terminal Block
16 Condenser Fan Motor
17 Evaporator Fan Motor
18 Socket Box
19 ENSTO Connector (2)
20 Control Panel
21 Connector Block (3)
22 58/65 Watt Ballast (2)
23 Side Light Assembly (2)
24 58 Watt Fluorescent Tube (2)
25 Centre Pillar Assembly
26 Centre Pillar Element

WIRING DIAGRAM

5

32

SK1000

SKOPE Top Mounted Vertical Chiller

6.1 Cabinet Assembly

Part Description SKOPE Part Number

Control Panel V5050/789-32

Solid Centre Pillar Assembly E5064/L43-32

SKOPE Badge V5000/770BF-99

Wire Shelf V5000/583-32

Shelf Bracket V0973-99

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 SXX4339

SPARES

6

33

SK1000

SKOPE Top Mounted Vertical Chiller

6.2 Interior Side Light

Part Description SKOPE Part Number

Side Light Assembly - L/H V5060/670L-32

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

34

SK1000

SKOPE Top Mounted Vertical Chiller

6.3 Glass Door

Part Description SKOPE Part Number

Glass Door Assembly - L/H V5000/D01LT *

Glass Door Assembly - R/H V5000/D01RT *

Glass Door Gasket GKT4774

Bush PLM5075

Torsion Bar Assembly REF5014

Capstan TUR5100

Top Hinge Assembly - R/H V5301/388

Top Hinge Assembly - L/H V5301/389

Bottom Hinge - R/H V5000/393-32

Bottom Hinge - L/H V5000/394-32

* If ordering a door assembly, please quote the finish colour.

SPARES

6

35

SK1000

SKOPE Top Mounted Vertical Chiller

6.4 Solid Door

Part Description SKOPE Part Number

Solid Door Assembly - L/H V5000/D01LT *

Solid Door Assembly - R/H V5000/D01RT *

Solid Door Gasket GKT4774

Bush PLM5075

Door Hinge Mechanism HIN5780

Top Hinge Assembly - R/H V5301/388

Top Hinge Assembly - L/H V5301/389

Bottom Hinge - R/H V5000/393-32

Bottom Hinge - L/H V5000/394-32

* If ordering a door assembly, please quote the finish colour.

SPARES

6

36

SK1000

SKOPE Top Mounted Vertical Chiller

6.5 Illuminated Sign

Part Description SKOPE Part Number

Illuminated Sign Assembly (packed) V5000/C20 *

Sign Box End - R/H V5000/C21 *

Sign Box End - L/H V5000/C22 *

Sign Reflector V5000/C23-32

Top/Bottom Panel V5000/C24 *

Sign Wiring Cover Assembly V5000/C25

Sign Back Strip V5000/181 *

Acrylic Flat Sign Panel (opal) PLY4506

Sign Side V5000/182 *

30 Watt Fluorescent Tube ELE5064

30 Watt Ballast ELZ1238

Starter ELZ2840

Lamp Holder ELZ6270

Lamp & Starter Holder ELZ6271

Fused Connector Block ELZ6461

Fuse Holder ELZ6462

3.0 Amp Ceramic Fuse ELZ6467

* If ordering a packed sign assembly, or the sign outer panels,
please quote this part number plus the painted colour.

SPARES

6

37

SK1000

SKOPE Top Mounted Vertical Chiller

6.6 Refrigeration Unit

Part Description SKOPE Part Number

Refrigeration Unit Assembly E5020R-128EZ
Control Box Assembly V5000/E50EZ
Foamed Evaporator Box V5000/376
Foamed Evaporator Box Lid V8150/225
Compressor - Danfoss SC12G CPR6108
Compressor Mounting Kit SXX3654NC
Evaporator Coil CLS3855
Condenser Coil CLS6356
Drier DRY8783
Thermostat - Saginomiya ELO7702
Unit Base V5000/210-32
Discharge Line V5020/255
Suction Line Assembly E5020/378
Condenser / Evaporator Motor ELM5304
R/H Fan Blade (clockwise) FAN4100
Relay - Danfoss SC12B ELR2729NC
RFI Suppression Capacitor ELC8068

SPARES

6