Skope B550-2 Service manual

perating and Service Manual MAN0515 Rev. 4.0 Jan. 2006 edition
B550/660-2
BME550-2
SKOPE Gen2: Single Door Chiller
Vertical Display and Storage

B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
Designed and Manufactured by
New Zealand
SKOPE INDUSTRIES LIMITED
POBox1091, 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
POBox7543, Baulkham Hills B.C.
NSW 2153, Australia
Freephone: 1800 121 535
Fax: [phone]
E-mail: [email protected]
Website: www.skope.com.au
C NTACT ADDRESSES
i

B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
B550/660-2, BME550-2
SKOPE Gen2:Single Door Chiller
Operating and Service Manual
MAN0515
Rev. 4.0 Jan. 2006 edition.
Copyright © 2005
SKOPE Industries Limited.
All rights reserved.
SKOPE Industries Limited reserve the
right to alter specifications without
notice.
is a registered trade
mark ofSKOPE Industries Limited.
ii
TRADE MARK INFRINGEMENT
TheSKOPEtrademarkon thisproductisinfringed ifthe owner, forthetime
being,doesany of the following:
•Applies the trade mark to the product after their state,condition, get-up
or packaging has been altered in anymanner
•Alters, removes (including part removal) or obliterates (including part
obliteration) the trade mark on the product
•Applies any other trade mark to the product
•Adds to the product any written material thatis likely to damage the
reputation of the trade mark
Notice of the above contractual obligations passesto:
•Successors or assignsofthe buyer
•Future owners of the product

B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
1SPECIFICATI NS
1.1Cabinet and Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . .7
2PERATI N
2.1Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.2Operation of Machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Electronic Controller. . . . . . . . . . . . . . . . . . . . . . . . . . .9
Cabinet Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Mains Isolating Switch. . . . . . . . . . . . . . . . . . . . . . . .10
2.3Shelving. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Loading Product. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.4Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3ELECTR NIC C NTR LLER
3.1Controller Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Meaning of LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.2Controller Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.3Programming Controller. . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.4Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.5Alarm Displays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Alarm Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.6Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Controller NTCProbe Resistance. . . . . . . . . . . . . . .20
Controller Removal. . . . . . . . . . . . . . . . . . . . . . . . . .21
Replacement Controller. . . . . . . . . . . . . . . . . . . . . . .22
Dixell Controller Wiring. . . . . . . . . . . . . . . . . . . . . . . .23
4SERVICE INSTRUCTI NS
4.1Interior Side Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.2Door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.3Sign Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
TABLE F C NTENTS
iii

B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
4.4Refrigeration Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
To Remove the Refrigeration Unit. . . . . . . . . . . . . . 34
To Re-Install the Refrigeration Unit. . . . . . . . . . . . . . 36
Refrigeration Unit Junction Box. . . . . . . . . . . . . . . . 37
EvaporatorFan Motor Assembly. . . . . . . . . . . . . . . 38
CondenserFan Motor Assembly. . . . . . . . . . . . . . . 39
Cleaning the Condenser Coil. . . . . . . . . . . . . . . . . . 40
Recommended Service Procedures. . . . . . . . . . . . . 41
For a Suspected Refrigerant Problem. . . . . . . . . . . 41
Short of Refrigerant. . . . . . . . . . . . . . . . . . . . . . . . . . 41
Compressor Not Pumping Efficiently. . . . . . . . . . . . 42
Capillary Restriction. . . . . . . . . . . . . . . . . . . . . . . . . 42
Refrigerant R134a Handling Precautions. . . . . . . . . 43
4.5Cabinet Wiring Junction Box. . . . . . . . . . . . . . . . . . . . . . . 44
4.6Mains Isolating Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.7Pressure Temperature Chart . . . . . . . . . . . . . . . . . . . . . . . 47
4.8Troubleshooting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5WIRING DIAGRAM
5.1Model: B550/660-2, BME550-2. . . . . . . . . . . . . . . . . . . . . 52
6SPARES
6.1Cabinet Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.2Interior Side Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.3Cabinet Wiring Junction Box. . . . . . . . . . . . . . . . . . . . . . . 56
6.4Mains Isolating Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.5Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.6Sign Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.7Refrigeration Unit: UB40AAC. . . . . . . . . . . . . . . . . . . . . . . 60
6.8Refrigeration Unit: UB30AAC. . . . . . . . . . . . . . . . . . . . . . . 61
TABLE F C NTENTS
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7
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
1.1Cabinet and Refrigeration Unit
Table 1: Specifications
Cabinet Construction
Exterior / Interior: White powdercoat on galvanised steel
Insulation: 50mm thick, polyurethane foam
Cyclo-iso Pentane blowing agent: C5H10/C5H12
Dimensions
Model: B550-2 B660-2 BME550-2
Height: 2195mm 2195mm 1995mm
Width: 740mm 800mm 740mm
Depth: 750mm 800mm 750mm
Floor area: 0.56m20.6m20.56m2
Internal volume: 558 litres 658 litres 558 litres
Refrigeration
Electronic controlled, bottom mounted SKOPE refrigeration unit
Model: UB40AAC UB30AAC
Nominal capacity: 581 Watts 581 Watts
Compressor: Electrolux GLY90RA Electrolux GLY90RA
Refrigerant: R134a / 465 grams R134A / 465 grams
Electrical
230-240 Volts a.c.50 Hz, single phase power supply
Run Amps: 2.15 A 2.36 A 1.96 A
Interior Lighting
Either 1 or 2 vertical 28 Watt T5 fluorescenttubes (Ø16mm x 1150mm)
Illuminated Sign
1 x 14 W T5 fluorescenttube (Ø16mm x 550mm) No sign fitted
Door
Self-closing,aluminium framed,double glazed, toughened safety glass
Shelves
5 adjustable shelves 4 adjustable shelves
SPECIFICATI NS
1

8B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
2.1Safety Information
Whenusing anyelectricalappliance, safetyprecautionsshould
alwaysbeobserved.Readtheseinstructionscarefully,and retainfor
future reference.
•When used by, or near, young children or infirm persons, close
supervision is necessary. Young children should be supervised
to ensure that they do not play with the appliance.
•Do NOT use this appliance for other than its intended use.
•Do NOT cover the grilles or block the entry or exhaust of airflow
by placing objects up against the refrigeration units.
•Do NOT probe any opening.
•Only use this appliance with voltage specified on the rating label.
•Ensure adequate ventilation of the SKOPErefrigeration units.
•Be careful not to touch moving parts and hot surfaces.
•Regulations require that all electrical work be carried out by
authorised persons. For yourown safety, and that of others,
ensure this is done.
•If the supply cord becomes damaged, it must be replaced by a
SKOPEauthorised service agent, or similarly qualified person,
in orderto avoid a hazard.
•If the refrigeration units are required to be installed or removed
from the cabinet, ensure all necessary safety precautions are
observed.
Warning: Do N T overload the power supply.
Caution:
Disconnect the cabinet from the mains power supply before
attempting any electrical servicing, cleaning or maintenance.
PERATI N
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9
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
2.2peration of Machine
Pluginthe machineandcheckoperation of therefrigeration unit,
electronic controller and cabinet lighting.
Refrigeration Unit
On initialstartuptheevaporator andcondenser fans andthe
compressor will operate. This may beverifiedby listening for
compressor switch on and checking air movement out of the slots in
the front kick panel. The internal cabinet air will continue to circulate
at all times, as the evaporator fans operate continuously.
The compressor should switchoff whenthe cabinet internal
temperaturereachesapproximately+2°C.andswitchonagainat
approximately +4°C.
Afan reversing device reverses the condenser fan motor for a
periodof time duringthe compressor ‘off-cycle’. This rotation
change is to assistwith self-cleaning of the condenser coil.
Otherwise, the condenser fan operates continuously in aclockwise
(LE) direction.
The two evaporator fans, located inside the evaporator box, operate
continuously. Both evaporatorfans operate in contra rotation, hence
there are dedicated left and right hand blades and different wiring for
the fan motors. Correct airflow,as viewed from the rear, of the unit
left hand fan is clockwise and the right hand fan is anti-clockwise.
Electronic Controller
On initial startup, the electronic controller will either displaythe
internal cabinet temperature or the controller set point. The
compressor ‘on’ LED willindicate when the compressor is operating.
The controller is locatedinthe front kickpanel(see page14for
further controlleroperation).
PERATI N
2

10 B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
Cabinet Lighting
On initial startup, the lights which illuminate the cabinet interior and
topsign(when fitted)willcomeonand stayonpermanently.The
lights will require aperiod of time to stabilise following initial start up.
Mains Isolating Switch
This cabinet isfittedwith amainsisolating switch andIEC
(appliance) socket, locatedintherefrigeration unit compartment
(see Figure 1below). The isolating switch and socket can be used
to isolate all cabinet andunit electrics, without unpluggingthe
cabinet fromthe wall.Ensurethemainsisolatingswitchis turned
back on after servicing.
Figure 1:Isolating Switch
Isolating Switch
IEC Socket
Refrigeration Unit
Mains Flex
PERATI N
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11
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
2.3Shelving
The chiller is supplied with either four orfive cabinet shelves, which
may be positioned at different heights to suit various products. Each
shelf is held in place with fourshelf clips, which engage in each of
the four shelf support strips. The support strips are marked with a‘+’
for easy location of shelf clips (see Figure 2 below).
Loading Product
When loading the cabinet shelves with 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.
Figure 2: Shelf Clip
Shelf Support Strip
Shelf Clip
‘+’ Mark
Shelf
PERATI N
2

12 B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
2.4Cleaning
When necessary, wipe both the interior and exterior of the cabinet
with adamp cloth. The exterior of the cabinet may be also be waxed
with automobilepolishforextra protection. Ensure the cabinet is
disconnected from the mains power supply before cleaning.
Periodic cleaning of the condensercoil is also recommended (see
page 40 for cleaning instructions).
Caution:
Disconnect the cabinet from the mains power supply before
cleaning.
PERATI N
2

13
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
3.1Controller Display
Table 2: Controller Operation
Item KeyFunction
1SET: Press to display target set point. In programming mode it selects
a parameter or confirms an operation
2DEFROST: Press to start a manual defrost
3UP: Press to see maximum stored temperature. In programming mode
it browses the parameter codes, or increases the displayed value
4DOWN: Press to see theminimum stored temp. In programming mode
it browses the parameter codes, or decreases displayed value
5Compressor on LED indicator
6Defrost cycle on LED indicator
7Set Point displayed LED indicator
8Decimal point LED indicator
Key Combinations:
Press both keys simultaneously, to lock and unlock the keypad
Press both keys simultaneously, to enter the programming mode
Press both keys simultaneously, to return to room temperature display
1
35
2
4
6
7
8
Figure 3:Controller Display
+
+
+
ELECTR NIC C NTRLLER
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14 B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
Meaning of LEDs
Table 3:LEDFunctions
3.2Controller peration
The SKOPEelectronic controller controls and displays the cabinet
temperature.The presettemperaturesettingcontrolsthe product
temperature between 2°C and 4°C.
Theelectronic controller also signalssystem andtemperature
alarms (see Table 5 on page 19).
Toensureefficient operation, the electronic controller has abuilt in
minimum off cycletime of 3minutesand features regulartimed
defrost cycles. During the defrost cycle, the compressor switches off
and the evaporator fan stays on.
The controller hastwo temperature probes; one is usedfor the
cabinettemperature controland display, while the other probe is
used for the condenser over-temperature alarms.
LEDModeFunction
ONCompressor enabled
FlashingAnti-short cycle delay enabled
ONDefrostenabled
FlashingDrip time in progress
FlashingProgramming mode (see page 16)
ONTemperature alarm (see page 19)
+
ELECTR NIC C NTR LLER
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15
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
3.3Programming Controller
The controllerkeypad must always be locked, to prevent
unauthorised modification.
To Unlock the Keypad (to modify parameters)
Press both the UP and DOWN keys
simultaneously until ‘Pon’ is displayed.
To Lock the Keypad
1.Press and hold both the UP and DOWN
keys together for more than 3 seconds.
2. The ‘PoF’message will be displayed and
the keypad will be locked. At this point it will be possible only to
see the Set Point or maximum or minimum temperature stored.
3.If akey is pressed formore than 3seconds, the ‘PoF’message
will be displayed.
To Display the Set Point
Pressand immediately release the SET key. The
display will show the Set Point value and the Set Point
LEDwill be highlighted.
To Change the Set Point
1. Push and hold the SET key for
more than 2 seconds.
2. The value of the Set Point will be
displayed, and the LED will start blinking.
3.To change the Set value, push the UP or DOWN keys.
4.Tomemorise the new Set Point value, push the SET key again
or wait 15 seconds.
ELECTR NIC C NTRLLER
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16 B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
To Start a Manual Defrost
Push and hold the DEFROST key for more than 2
seconds.
To Change a Parameter Value
1. Enter the programming mode by
pressing and holding both the
SET and DOWN keys for 3 sec.
(and start flashing).
2.Select the required parameter.
3.Press the SET key to display the Set value (now only the
LED is flashing).
4.Press the UP or DOWN keys to change the Set value.
5.Press the SET key to store the new value and move to the
following parameter.
6.To exit: Press both the SET and UP keys, orwait 15 seconds
without pressing any keys.
7.To lock in new parameter value: after one minute operation,
disconnect and reconnect cabinet into the mains power supply.
Notes:
1.The Set value is stored even when the procedure is exited, by
waiting forthe time-out to expire.
2.Dependent on customer requirements, the SKOPEelectronic
controllermay have different parameter configurations (see
‘ControllerParameters’ in Table 4on pages 18).To ensure the
controlleris programmed with the correct SKOPEprogram,
check the program number printed on the controller box
(parameter configuration 160 = Beverage, and 170 = Food).
ELECTR NIC C NTR LLER
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17
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
To See the Minimum Temperature
1.Press and release the DOWN key.
2.The ‘Lt’ message will be displayed, followed by the minimum
temperature.
3.Press the DOWN key again, or wait 5 seconds, to restore the
normal display.
To See the Maximum Temperature
1.Press and release the UP key.
2.The ‘Ht’ message will be displayed, followed by the maximum
temperature recorded.
3.Press the UP key again, or wait 5 seconds, to restore the
normal display.
To Reset the Maximum and Minimum
Temperature
1.Press and hold the SET key formore than 3seconds, while the
maximum or minimum temperature is displayed. The ‘rSt’
message will be displayed.
2.To confirm the operation, the ‘rSt’ message starts flashing and
the normal temperature will be displayed.
ELECTR NIC C NTRLLER
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18 B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
3.4Parameters
Table 4:Controller Parameters
Parameters
Display Beverage
160
Food
170
Range Description of Parameter
SET P INT PARAMETERS
Set 2 1 LSto US Set Point
Hy 2 2 0.1°C to 25.5°C Differential
LS 1 -1 -50°C to Set MinimumSet Point
US 15 5 Set to 150°C MaximumSet Point
PR BE PARAMETERS
Ot -0.7 0 -12°C to 12°C Thermostat probe calibration
OE 0 0 -12°C to 12°C Condenser probe calibration
CNTR L PARAMETERS
OdS 0 0 0 to 255 minutes Outputs delay at start up
AC 3 3 0 to 50 minutes Anti-short cycle delay
DISPLAY PARAMETERS
CF °C °C °C / °F Temperature measurement unit
rES dE in in / dE Resolution
LoD P1 P1 P1 / P2 or SP Local display
DEFR ST PARAMETERS
IdF 6 6 1 to 120 hours Interval between defrost cycles
MdF 12 12 0 to 255 minutes Maximumlength for defrost
dFd dEF dEF rt / it / Set / DEF Displaying during defrost
dAd 20 20 0 to 255 minutes Maximumdisplay delay after defrost
ALARM PARAMETERS
ALc Ab Ab rE / Ab Temperature alarmsconfiguration
ALU 12 7 up to 150°C Maximumtemperature alarm
ALL -2 -2 -50°C to ALU Minimumtemperature alarm
AtH 1 1 0.1°C to 25.5°C Differential for temperature alarm in cabinet
ALd 240 120 0 to 255 minutes Temperature alarm delay
dAO 24 24 0 to 23.5 hours Delayof temperature alarm at start up
tbA n n n = no / y = yes Alarm relay silencing
PA2 58 58 -40°C to AU2 Condenser over temperature
AU2 65 65 -40°C to 110°C AUE Condenser alarm temperature
ACH 5 5 0.1°C to 25.5°C Differential for condenser alarmtemp recovery
dL2 2 2 0 to 255 minutes Condenser alarmdelay
dA2 0 0 0 to 23.5 hours Condenser alarmtemperature delay at start up
AOP CL CL OP / CL Alarm relay polarity
THER PARAMETERS
dP1 - - - Thermostat probe read out
dP2 - - - Condenser probe read out
rEL - - - Software release
Ptb - - - Map code
ELECTR NIC C NTR LLER
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19
B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
ELECTR NIC C NTRLLER
3
3.5Alarm Displays
Table 5: Controller Alarm Displays
Note: The refrigeration system and cabinet lighting shut downwith
‘P1, P2 and CSd’ alarms.
Alarm Recovery
•Condenser Stage ONEover-temperature alarm (COH)recovers
when the condenser is either cleaned or cools down.
•Condenser Stage TWOover-temperaturealarm (CSd)recovers
by disconnecting and reconnecting the cabinet mains power
supply (or isolation switch), which will reset all the alarms.
•Cabinet temperature alarms (LO and HI) automactically stop at
temperature recovery.
AlarmDescription
Stage ONE - Maintenance required:
Immediately attend condenser (for auto alarm reset).
Stage TWO - Refrigeration Shut-Down:
Condenser over-temperature has shut-down system and
cabinetlighting. Attend condenser.To reset alarm,cabinet
mustbe replugged into power supply.For repeatalarms,
contactan authorised service agent.
Faulty Ambient probe (internal cabinet - return air).
Refrigeration system and cabinetlighting shut down.
Faulty High Temperature probe (condenser).
Refrigeration system and cabinetlighting shut down.
Internal cabinet - LOW temperature alarm.
Alarm will stop attemperature recovery.
Internal cabinet - HIGH temperature alarm.
Alarm will stop attemperature recovery.

20 B550/660-2, BME550-2
SKOPE Gen2: Single Door Chiller
3.6Replacement
If the SKOPEelectronic controller has a suspected fault, caremust
be taken to ensure accurate diagnosis. The controller has various
programmable parameters that effect operation such as time delay
and defost modes (see Table 4 on page 18).
•Any suspected failure must be double checked.
•Confirm all wiring and terminations are correct.
•Check probe resistance is correct (see Table 6 below).
•Replace any faulty components.
Controller NTC Probe Resistance
* Tolerance ± 2.4%
Table 6: NTC Probe Resistance
Temperature Resistance*
(K hms)
-10°C 42.5
-5°C 34.0
0°C 27.3
5°C 22.1
10°C 18.0
20°C 12.1
30°C 8.3
40°C 5.8
50°C 4.2
ELECTR NIC C NTR LLER
3