Stuart CC130, CC270, CC450, CC900, CC1800 Installation And Service Manual

CUBE ICEMAKER MODELS

CC130 CC270 CC450 CC900 CC1800

INSTALLATION

AND

SERVICE MANUAL

Revision 6

STUART MANUFACTURING

1 Jayelem Crescent
Padstow NSW 2211
Australia
Telephone [phone]
Fax [phone]
www.stuman.com.au

TABLE OF CONTENTS

PAGE

Specifications 1

Installation Instructions 2

Adjustments 3

Operation of Machine 4 - 5

Trouble Shooting 6 - 8

Logic Board Flow Chart 9 - 10

Main Circuit Function Diagram 11

Wiring Diagrams 12 - 18

Parts List 19

SPECIFICATIONS

MODEL

WATER
PRESS URE

All Models Minimum: 70 kpa
Maximum: 850 kpa

OPERA TING
TEMPERATURE

All Models Minimum: 1 degree Celsius
Maximum: 43 degrees Celsius

FAN PRESS URE
CONTROL

All Models Cut in: 1500kpa
Cut out: 1200kpa

WATER
CONNECTIO N
REQUIREMENTS

All Models 3/4” BSP male stop cock

DRAINAG E

All Models 25mm dia meter PVC

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CC130 CC270 CC450 CC900 CC1800

ELECTR ICAL

REFRIGERATION

SUCTION
PRESS URE
@ 21 deg. C
FLOODED
EVAPORATOR

240 volts
50 hz

3.8 amps

R-22
580g

200kpa

240 volts
50 hz

8.0 amps

R-22
925g

200kpa

240 volts
50 hz

12.0 amps

R-22
2000g

260kpa

415 volts
50 hz
10 amps/ph.

R-22
4500g

260kpa

415 volts
50 hz
18 amps/ph.

R-22
———

260kpa

INSTALLATION INSTRUCTIONS

LOCATION

1. All models, allow a minimum of 250mm above for correct ventilation.

2. Machine must be LEVEL.

3. Incoming water temperature affects ice production. Therefore, avoid above ground
plumbing and pipes exposed to direct sunlight.

4. Make sure drain hose has no kinks and has a fall to floor waste.

START-UP PROCEDURE

1. ENSURE MACHINE IS LEVEL

2. Connect water hose and turn on water.

3. Remo ve front and side panels.

4. Turn on power.

5. Wait for about 10 seconds, then press and hold RESET b utton for about 5 seconds.
The machine should now be in normal icemaking mode. i.e. the compressor and
water pump should both be running.

6. Allow machine to complete two (2) cycles before making any adjustments.

NOTE: On some models the top ice cubes may be slightly thinner than the bottom ice
cubes. This is quite normal.

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ADJUSTMENTS

There are only two (2) adustments which can be made to the machine, Water Purge and Ice
Thickness.

WATER PURGE

Water p urge should be set at approximately 5-10% of the weight of ice per cycle (Check
chart below for recommended ice block weight) As the water purge is time activa ted, it will
vary with water pressure.

To check the water purge, hold a measuring cup under the overflow hose and catch the
waste water at the end of the fill cycle. The cup should be held there fo r at least five (5)
minutes as the waste water may take some time to stop running. The purge adjustment is
lo cated on the control panel just above the fault light.
Adjustment is made using a small screwdriver to turn the adjusting screw to increase or
decrease as indicated.

ICE THICKNESS

The correct weight of ice per cycle has been factory set with the machine LEVEL. If the
machine is not installed level this can alter the weight (size) of the ice.

NOTE: Refer to chart below for correct ice weights.

Adjustments are made by moving the adjustable float up or down. The adjustable float is
lo cated at the water pump e nd of the trough.

To make the ice thicker i.e. heavier, loosen the brass thumb screw and lower the float.
To make the ice thinner i.e. lighter, raise the float.
The graduated scale on the float is only a n indicator to show how far the float has moved.
When mak ing a ny adjustments, it is recommended that you only move the float one (1)
graduatio n at a time.

After making any adjustments, tighten the thumb screw to ensure the float cannot move.

ICE WEIGHT (Total both slabs)

CC130 CC270 CC450 CC900 CC1800

1,300g 2400g 4,800g 9,600g 19,200g

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OPERATION OF MACHINE

NOTE: All b uttons on the control panel have a built in five (5) second delay. i.e. each

button must be depressed for five (5) seconds before the function will be activated.

When the power is first switched on, nothing will happen for about five (5)

seconds. During this time the electronics will perform a self-diagnostic
check.

WARM UP CYCLE

Once the self-diagnostic check is complete the machine will go into warm up

mode. In this mode the compressor is on, hot gas va lve open, water p ump and
fill solenoid off.(Defrost cycle) The compressor will run for two (2) minutes

and will then s witch off. The pump will start and nothing else will happen
for a further three (3)minutes. At the end of this period the machine will

automatically switch to the ICE MAKE CYCLE. On initial start up the warm up
cycle can be cancelled by pushing the reset button.

WHY A WARM UP CYCLE?

The warm up cycle has been designed in the software:

(a) to protect the machine from damage in the event of a power failure during the
freezing cycle. By using the WARM UP (defrost) CYCLE when power is
restored, any ice which had formed on the icemaking plates before the power
failure will be fully removed before the ICE MAKE CYCLE recommences.

(b) because if a fault (3,4 or 5) occurs, the machine will have two (2) attempts at

completing the function before shutting down and displaying a fault number. If,
on the second attempt, the same fault is not detected, the machine will revert to
the ICE MAKE CYCLE and continue to run. Therefore, by using the

WARM UP CYCLE between attempts on faults 4 and 5 the machine will not
make a double ice slab.

ICE MAKE CYCLE

The display will remain this way during the whole of the icemaking

cycle until:

(a) the ice storage bin is full, at which time the numbe r 7 is displayed.
As soon as ice is removed from the storage bin, allowing the flaps to close,
the machine will go back to the start of the ICE MAKE CYCLE.

NOTE: The machine will only go into the ICE BI N FULL MODE after a defrost
and both flaps must be closed before it will return to the ICE MAKE CYCLE.

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4

5

4

1

2

3

ERROR CODES

As described above, the software is designed to ma ke two (2) atte mpts to complete each function, WA TER
FILL, MAKE ICE and DEFROST before shutting down and displaying a fault number. If on the second
attempt the same fault is detected, the machine will shut down and display one of the following fault numbers:

Did not fill with water in t ime

Did not make ice in time

Did not defrost in time

NOTE!

If an error 3 occurs, the machine will attempt to fill every hour until the water supply is restored.Therefore, if
the water supply is interupted after hours, the machine may be functioning normally the ne xt morning and th e
only evidence of a problem may be a s hortage of ice in the bin. If this becomes a regular occurrance, then the
caus e of the interuption should be rectified.

For more detailed information on the operation of the machine, refe r to the OPERATIONA L FLOW CHARTS
on pages 8 and 9.

CLEAN CYCLE

Cleaning of the icemaker is reco mmended on a regular basis, at least twice each year.
To clean th e icemaking plates, remove the front and right hand side panels .
Ensure the machine is in normal icemaking mode (No. 2 on the display)
Press and hold defrost button until icemaking plates are free of ice.
Drain water fro m trough until base of water pu mp is just covered.
Add “Scale Kleen” or other approved icemaker cleaner to water trough. (It is recommended that “Scale Kleen”
or other approved cleaner be mixed in a bucket with hot water to s peed cleaning cycle)
Press the CLEA N button, the compressor stops and leaves the water pump running.
Allow cleaner mixture to circulate until the icemaking plates are clean.
When the icemaking plates are clean, remove the drain plug and allow cleaner to drain to a bucket.
Whilst draining, additional water can be supplied to the trough by pressing the FILL button. The water will
stop flowing approximately five (5) seconds after the fill button is released. This feature is particularly us efull
for flushing the system after clean ing.
When cleaning is complete, press the reset button and the machine will revert to ICE MAKE M ODE.

NOTE: It is not necess ary to re move the curtain flaps to perf orm the cleaning operation.

This operation is best performed when th e ice storage bin is empty to prevent ice from being contaminated by
the cleaning solution.

Whilst the icemaker cleaner is circulat ing, us e a soft brush or vacuum cleaner to remove dus t from condenser.
Care should be taken not to damage the fins on the condenser as this may cause a restriction and affect the
performance of the icemaker.
Alternatively, compressed air or CO2 can be used to blow dus t from the condenser. If this method is used the
compress ed air or CO2 should be applied to the back of the condenser to blow the dust out the front.
CAUTION! Eye protection and dust mask sho uld be used if blowing dust from condens er.

If a water f ilter has been fitted to the machine, the cartridge should also be replaced regularly. Cartridge life
will vary greatly depen ding on the type of cartridge and incoming water quality.
A cartridge of not more than 5 microns and containing a scale inhib itor is reco mmended.

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4

5

5

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TROUBLE SHOOTING

MICROPROCESSOR DIAGNOSTICS

The 2nd generation logic board has a non volatile memory which stores a fault history for the icemaker, plus
other diagnostics s uch as total machine running hours , number of cleaning cycles perfor med and number of
icemaking cycles.

ACCESSING DIAGNOSTIC DISPLAY

To access th e diagnostic display:

1. Ensure the mach ine is in normal icemaking mode. 2

2. Press and hold down both the FILL and CLEAN butto ns.

3. W hen the display shows 0 releas e both buttons.

4. Push the DEFROST button to change the display to the desired diagnostic number as listed below

NUMBER DIAGNOSTIC FUNCTION
0 Displays the fault history for the last 5 machine errors. (First to last)

1 Displays a 5 digit mach ine hour counter.

2 Displays the number of cleaning cycles performed.

3 Displays the number of harvest cycles.

5. W hen the des ired diagnostic number is displayed, push and release the RESET button.

6. The selected diagnostic value is disp layed on the numeric display.

7. To cancel the diagnostic function, press the RES ET button again.

CHECKING OPERATION OF REED SWITCHES

The curtain flap switches and the high and low floats have indicator (red LED) lights on the main circuit board.

To check the operation of these switches, set the machine in the W ARM UP CYCLE with no water in the
water trough.

CURTAIN FLAP SWITCHES

By moving the water curtains ,the lights marked FLAP 1 and FLAP 2 should be on when the curtain is closed
and off when the curtain is about 10 to 15mm open.

LOW FLOAT

With the low float all the way down, the indicator light should be off, but by moving the float up the
indicator light shoul d come on.
NOTE: If the reverse is happening, the float itself is around the wrong way. Remove the clip at the bottom,
take the float off and re-install the float the other way round.

HIGH FLO AT

With the float in down pos ition, the light shoul d be off, but by moving the float up, the light shoul d come
on.
NOTE: If the reverse is happening, rotate the whole float switch as s embly 180degrees

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