Climate RENTAL SOLUTIONS SK1000 User manual

SK1000
TWO DOOR CHILLER FRIDGE
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE
OPERATING MANUAL

OPERATING MANUAL SK1000 TWO DOOR CHILLER FRIDGE
Page 2
TABLE OF CONTENTS...........................................................................................2
SPECIFICATIONS...................................................................................................3
Cabinet and Refrigeration Unit ................................................................................3
INSTALLATION .......................................................................................................4
Positioning of Machine ............................................................................................4
OPERATION............................................................................................................4
Safety Information ...................................................................................................4
Operation of Machine ..............................................................................................5
Loading....................................................................................................................5
Cleaning ..................................................................................................................5
Servicing..................................................................................................................6
SERVICE INSTRUCTIONS.....................................................................................6
Trouble Shooting .....................................................................................................6
TABLE OF CONTENTS

OPERATING MANUAL SK1000 TWO DOOR CHILLER FRIDGE
Page 3
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 tted
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 uorescent tube, Ø26mm x 1524mm
Illuminated Sign
370mm high at sign: 1 x 30 Watt uorescent tube, Ø26 x 915mm
Doors
Self-closing, aluminium framed, double glazed, toughened safety glass
Shelves
Adjustable height, white powder coated, steel wire shelves
SPECIFICATIONS

OPERATING MANUAL SK1000 TWO DOOR CHILLER FRIDGE
Page 4
Positioning of Machine
Mains Flex
The mains ex exits below the rear panel behind the refrigeration units. For convenience, the ex should be retrieved
before the machine is positioned, when walls and partitions may make access di󰀩cult.
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 overowing.
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 e󰀩cient operation 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.
OPERATION
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 specied 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 u󰀨 from the
condenser.
• Be careful not to touch moving parts.
• Do NOT cover the grilles or block the entry or exhaust of airow by placing objects up against or on top of re-
frigeration 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
INSTALLATION

OPERATING MANUAL SK1000 TWO DOOR CHILLER FRIDGE
Page 5
others, ensure this is done.
• If the refrigeration unit is required to be installed or removed from the cabinet, ensure all necessary safety pre-
cautions are observed.
Caution:
Disconnect the cabinet from mains power supply before attempting any electrical servicing, cleaning or maintenance.
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 veried 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 o󰀨 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.
Loading
Shelves may be positioned at di󰀨erent 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 e󰀩cient 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.
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 o󰀨 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 e󰀩cient 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.

OPERATING MANUAL SK1000 TWO DOOR CHILLER FRIDGE
Page 6
Caution:
The cabinet MUST be disconnected from the mains power supply before cleaning the condenser coil.
Servicing
Servicing should be carried out by an authorised service agent.
SERVICE INSTRUCTIONS
Trouble Shooting
COMPLAINT POSSIBLE CAUSE REPAIR
1. Cabinet not operating - lights
etc not going.
Loss of power supply.
High pressure switch cut-out, due to over
heating.
Check power supply.
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.
Overload protector tripped.
Thermostat stuck in open position.
Thermostat o󰀨, due to cold location.
Wiring improper, or loose.
Replace fuse. Check reason.
Refer to electrical section.
Repair or replace control.
Relocate control.
Check wiring against diagram.
3. Compressor will not start -
hums but trips on overload
protector.
Improperly wired.
Low voltage to unit.
Start capacitor defective on CSIR or CSR motor.
Run capacitor defective on PSC motor.
Relay failing to close.
Compressor motor has a winding open or
shorted.
Internal mechanical trouble in com¬pressor.
Check wiring against diagram.
Determine reason and correct.
Determine reason and replace.
Determine reason and replace.
Determine reason and correct. Replace if
necessary.
Check resistance values. Replace compressor if
neces¬sary.
Replace compressor.
4. Compressor starts, but does
not switch o󰀨- startswinding.
Improperly wired.
Low voltage to unit.
Relay failing to open, due to welded contacts or
relay incorrectly mounted.
Run capacitor defective on CSR motor.
Excessively high discharge pres¬sure.
Compressor motor has winding open or shorted.
Check continuity and resistance.
Internal mechanical trouble in com¬pressor
(tight). May be lubrication.
Check wiring against diagram.
Determine reason and correct.
Determine reason and correct. Replace if
necessary.
Determine reason and replace.
Clean condenser. Check power input. Possible
overcharge, insu󰀩cient condenser cooling, or
non-condensible gasses.
Replace compressor if faulty.
Replace compressor.

OPERATING MANUAL SK1000 TWO DOOR CHILLER FRIDGE
Page 7
5. Compressor starts and runs,
butshort cycles on overload
protector (relay may chatter on
RSIR, CSIR and CSR motors).
Additional current passing through overload
protector.
Low voltage to unit.
Overload protector defective.
Run capacitor defective on CSR motor.
Excessive discharge pressure.
Suction pressure too high.
Compressor too hot - insu󰀩cient suction gas
cooling.
Comp’r motor has a winding shorted.
Check wiring diagram. Check for added
fan motors etc., connected to wrong side of
protector.
Determine reason and correct.
Check current, replace protector.
Determine reason and replace.
Check condenser, check ventilation, check for
restrictions in refrigeration system.
Check for possibility of misapplication.
Check refrigerant charge (x leak), add if
necessary. Check return vapour temperature
and suction superheat.
Replace compressor.
6. Unit runs OK, but short cycles.
Overload protector.
Thermostat: requires adjustment or incorrectly
positioned.
Incorrect refrigerant charge.
See section 4 on p.21.
Adjust or relocate thermostat.
Adjust refrigerant charge.
7. Unit operates long or continu-
ously.Unsatisfactory cabinet
tem¬perature.
Short of refrigerant.
Overcharge of refrigerant.
Thermostat not cooling correctly.
Freezer has excessive load.
Evaporator coil iced.
Restriction in refrigeration system.
Dirty condenser.
Inadequate air circulation.
Compressor not pumping e󰀩ciently.
Filter dirty (if applicable).
Faulty fan motor.
Fix leak, and add charge.
Remove refrigerant to correct charge.
Adjust thermostat (clockwise colder), and check
thermostat bulb location. If necessary, replace
thermostat.
Establish load within limits.
Defrost evaporator, check refrigeration. Check
thermostat. Check door closing, seals etc.
Determine location and clear restriction.
Flush with dry nitrogen. Replace component if
blockage will not clear.
Clean condenser. Advise client how to regularly
clean condenser.
Internal: Improve air movement, alloe airow
around stock.External: Remove any restrictions
to condensing ventilation.
Replace compressor.
Clean or replace.
Check rotation. Replace if necessary.
8. Start capacitor open, shorted
or blown.
Relay contact not opening properly.
Prolonged operation on start cycle due to:(a)
Low voltage to unit.(b) Improper relay.
Excessive short cycling.
Improper capacitor.
Clean contacts, or replace relay if necessary.
(a) Determine reason and correct.(b) Replace
relay.
Determine reason for short cycling (see section
5 on p.21), and correct.
Determine correct size and replace.
9. Relay defective or burned out.
Incorrect relay.
Line voltage too high or too low.
Excessive short cycling.
Relay being inuenced by loose vibrating mount.
Check and replace.
Determine reason and correct.
Determine reason (see section 5 on p.21), and
correct.
Remount rigidly.
10. Suction line frosted. Evaporator fan not running.
Overcharge of refrigerant capillary systems.
Determine reason and correct.
Correct charge.
11. Unit noisy.
Loose parts or mountings.
Tubing rattle.
Bent fan blade causing vibration.
Fan motor bearing worn.
Find and tighten.
Reform to be free of contact.
Replace blade.
Replace motor.