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August 2013

Page 15

Service Manual for Models CU0415, CU0715 and CU0920

Components

Compressors

, three capacities

Type: Hermetic

Brand: Embraco

Condenser

: air cooled forced draft, copper and

aluminum.

Evaporator:

Nickel plated copper, inverted grid

Ice

: Medium / Full Dice cube. 5 x 9 per cycle, about 1

lb per cycle

Metering device

: Capillary tube

Refrigerant:

R-134a.

Refrigerant Charge

: 8 ounces, all models. No access

valves.

Fan motor

: Unit motor, CU0415 and CU0715 are 2.3

watts; CU0920 is 6 watt. Fan motor may cycle during

freeze, should be off during harvest as the discharge

pressure will be below 100 PSIG.

Fan blade

: Molded

Fan pressure control switch:

Opens at 100 PSIG,

closes at 150 PSIG.

Water pump

: OEM

Hot gas valve

: Ported, line voltage coil

Inlet water solenoid valve

: .275 GPM flow, line

voltage coil

Transformer

: Output 12 volt AC

Controller:

Microprocessor operated relays for fan

and pump. Internal electronic timer. Bridge thickness

and harvest time adjustable on controller. Indicator

lights for bridge thickness and harvest time. No

maximum or minimum time limits or error codes.

Lights for timer, freeze mode and anti-slush mode.

Thermistor failure indicated by all Bridge Thickness

and Harvest Time green lights blinking. Unit continues

to operate on a fixed timed freeze and harvest cycle.

Sensors:

Thermistor for suction line temperature,

Thermistor for reservoir water temperature.

Bin Thermostat:

Opens on temperature fall, must be

closed to power control system. Operates compressor

directly.

Master switch

. On, Off, or Wash. DPDT, not a service

disconnect.

On: When contacts 2-1 are closed power is connected

to the bin thermostat, allowing it to automatically

switch the machine on and off.

At the same time contacts 5-4 are closed, making a

circuit to the pump common and fan motor pressure

control.

Off: all contacts open.

Wash: Contacts 2-3 provide a connection to contacts

5-6, connecting power to the pump common. Only

the pump operates when the switch is in the Wash

position.

Evaporator

Thermistor

Mounted above

accumulator,

clipped to suction

line.

Содержание CU0415

Страница 1: ...Service Manual for Cube Ice Machine with storage models CU0415 CU0715 and CU0920 ...

Страница 2: ...nformation Keep this manual for future reference Table of Contents Important Details 2 Pre Installation 3 Cabinet Layout CU0415 and CU0715 4 Cabinet Layout CU0920 5 Component Location 6 Connect the water supply 7 Connect the power 8 Control Panel and Adjustments 9 Initial Start Up 10 Use and Operational Notes 11 Maintenance 12 Electrical Sequence 14 Components 15 Performance 16 Thermistor Values 1...

Страница 3: ... static 80 psi or 5 5 bar Minimum pressure dynamic 15 psi or 1 bar A drain will be needed for melted ice and rinse water Warranty The warranty statement for this product is provided separately from this manual Refer to it for applicable coverage In general warranty covers defects in material or workmanship It does not cover maintenance corrections to installations or situations when the machine is...

Страница 4: ...e to allow placement without legs An optional floor mounting kit is also available to fill the gap between the machine and floor if not using legs If using legs carefully tip the machine and install the legs by screwing them into the leg sockets in the bottom of the machine For reference the thread size is 5 8 11 If the machine has been tipped onto its side or back allow 1 hour before starting the...

Страница 5: ...n 29 8cm 11 8in AIR OUTLET AIR INLET 48 3cm 19 0in 68 9cm 27 1in 15 2cm 6 0in 10 2cm MINIMUM UTILITY CLEARENCE 60 3cm 23 7in 38 1cm 15 0in 34 5cm 13 6in 14 6cm 5 8in 5 1cm 2 0in 8 2cm 3 2in POWER CORD POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft DRAIN 3 4 FPT DRAIN 3 4 FPT POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft POWER CORD ...

Страница 6: ...IR INLET AIR OUTLET 48 3cm 19 00in 68 9cm 27 13in 15 2cm 6 00in 10 2cm 4 00in MINIMUM UTILITY CLEARENCE DRAIN 3 4 FPT POWER CORD 50 8cm 20 00in 60 1cm 23 67in POWER CORD POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft DRAIN 3 4 FPT 32cm 12 60in 14 6cm 5 75in 7cm 2 75in 8 2cm 3 23in 5 1cm 2 00in POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft ...

Страница 7: ...odels CU0415 CU0715 and CU0920 August 2013 Page 6 Component Location Bin Thermostat Adjustment Condenser Fins Control Area Drain Plug Bin Thermostat Sensing Point Curtain Condenser Fan Thermostat Controller Cube Deflector ...

Страница 8: ...necting to the ice machine 1 Cut cable ties securing hose and power cord to unit 2 Connect to cold potable water using the necessary adapters for the 1 4 inch OD plastic tube If using compression fittings they require a ferrule or sleeve and insert A female 3 8 compression adapter x 1 4 OD compression allows connection to a typical 3 8 OD compression angle valve Another connection method is by qui...

Страница 9: ...or it Have all of the shipping items and packaging been removed Has the plastic covering the exterior panels been removed Is the ice chute in the correct position Is the clear plastic curtain hanging down and free to move Has the water supply been connected and confirmed to not leak Has a properly sized and sloped drain tube been attached Has the correct voltage power supply been connected Front v...

Страница 10: ...rol Panel and Adjustments Adjustment Indicator Lights Each push and release of the or button will change the lights that glow or blink indicating a change in ice size or harvest time Example pushing one time changes a blinking light to steady on type If the lights are on steady a single push of will add one more light to the right and it will blink There are 10 settings All 5 lights on steady is t...

Страница 11: ... the freeze cycle continues for seven more minutes At that time the unit changes to the ice release or harvest cycle During the ice harvest the hot gas valve and inlet water valve are open while the pump and fan motors will stop The blue and yellow lights will go out Water will refill the reservoir 9 Within a minute or so the ice formed in the mold will fall down and slide into the ice storage bin...

Страница 12: ...the minimums listed it will not switch on to make ice Minor adjustments may be made to compensate for local conditions by rotating the adjustment screw visible above the control area If in a cold room CW rotation changes the control to COLDER to fill the bin higher If installed at an altitude greater than 2000 ft or 610 meters above sea level the bin thermostat may need internal adjustment The adj...

Страница 13: ...ster switch to the Off position 11 Drain the reservoir by removing drain plug and draining the solution into the bin Return the drain plug to its normal position 12 Remove spray platform by removing cube chute and lifting spray platform up and off its connection If needed open platform and confirm all jets are open Rinse out any debris reclose and return it and the cube chute to the unit Be sure g...

Страница 14: ...t the reservoirs front lip 11 Move the master switch to the Wash position for 1 minute then switch it to Off 12 Drain the reservoir by removing the drain plug and draining the solution into the bin Return the drain plug to its normal position 13 Move switch to the On position The machine will resume normal ice making 14 Return the front panel to its original position and secure it with the origina...

Страница 15: ...ontroller will be ON As the freezing cycle continues the suction line temperature will fall changing the resistance of the thermistor attached to it At a pre set resistance a timer in the controller will start to finish the freezing cycle A yellow light switches on and the freeze cycle will continue for 7 more minutes The Harvest or Defrost mode begins The yellow and blue lights switch off The pum...

Страница 16: ...ickness and harvest time adjustable on controller Indicator lights for bridge thickness and harvest time No maximum or minimum time limits or error codes Lights for timer freeze mode and anti slush mode Thermistor failure indicated by all Bridge Thickness and Harvest Time green lights blinking Unit continues to operate on a fixed timed freeze and harvest cycle Sensors Thermistor for suction line t...

Страница 17: ...or amp draw 115 volt Freeze 5 minutes in 2 6 Overall Freeze cycle amps begin at 2 7 decline to 2 5 Harvest 2 9 3 2 Drain water per cycle at standard harvest setting about 1 quart at shorter setting drain water reduced slightly CU0920 Compressor amp draw 115 volt Freeze 5 minutes in 3 1 Overall Freeze cycle amps begin at 3 5 decline to 2 9 Harvest 3 3 3 7 Drain water per cycle at standard harvest s...

Страница 18: ...63 111 4562 112 4463 113 4367 114 4273 115 4182 116 4093 117 4006 118 3921 119 3838 120 3757 121 3678 122 3601 123 3526 124 3452 125 3381 126 3311 127 3243 128 3176 129 3111 130 3047 131 2985 132 2924 133 2865 134 2807 135 2751 136 2696 137 2642 138 2589 139 2537 140 2487 141 2438 142 2390 143 2343 144 2297 145 2252 146 2208 147 2165 148 2123 149 2082 150 2042 151 2003 152 1965 153 1927 154 1890 1...

Страница 19: ...me and a bigger bridge The lower level line of LED lights are indicators of the adjustment for Harvest Time More lights more harvest time and more water rinse At the end of the freeze cycle a yellow Timer light will switch on indicating that there are 7 minutes left until Harvest During the end of Harvest the Timer light may also switch on Unit in ice making mode freeze mode indicator light is on ...

Страница 20: ...ime is when the water temperature is near the freezing point The controller measures the water temperature using a thermistor probe in the pump discharge hose At the correct temperature it cuts power to the water pump for 30 seconds This allows the water left on the evaporator surface to securely freeze to the evaporator surface When the pump restarts the freeze cycle will continue until harvest T...

Страница 21: ... and the Freeze relay will close and the blue Freeze LED will turn on for 5 seconds Compressor fan motor and pump will start If not the controller has failed 11 Press upper right again and the Pump relay will switch the pump will stop and red LED on back side of the board will turn on for 5 seconds Note Pressing repeatedly will toggle between testing the two relays 12 Press and hold lower left but...

Страница 22: ...e self test on prior page Controller failure 12 volts to it no lights visible Replace controller No ice compressor and fan on pump not spraying water No or low water in reservoir Check water filters check water pressure Pressure lower than 10 psi flowing may not fill reservoir enough Check inlet water solenoid valve for proper operation Check drain plug for leaks correct as needed Pump hose discon...

Страница 23: ...rating Not enough refrigeration Check suction line temperature When blue freeze mode light is on suction line should begin to get cold If not confirm compressor is operating No ice in bin evaporator mold forms ice properly No heat for harvest ice does not release Hot gas valve does not open Check water valve if it adds water during harvest and the hot gas valve does not open replace the hot gas va...

Страница 24: ...h altitude adjust compensation screw Unit makes ice but it is wet Normal Fresh ice will be wet Water dripping spraying on it Check curtain may be torn or not in position Check that cube deflector is correctly positioned Makes ice but is slow cannot keep up Air cooled condenser is dirty Clean condenser fins Too much water Slight leak from inlet water solenoid valve check replace valve Air flow to c...

Страница 25: ...ont of the reservoir Push curtain down into the slot as far as it will go 6 Check that curtain hangs freely and reassemble the parts removed Cube Deflector 1 Remove front panel 2 Shut unit off 3 Open door lift original cube deflector up twist slightly and pull forward out of the reservoir 4 Install new deflector in reservoir be sure deflector is snapped down at the front it fits tightly on the res...

Страница 26: ...ting it up twisting slightly and pulling out 4 Pull spray platform forward unit it releases from its snap and remove pump hose from platform 5 Remove platform from the unit Replace or service and then reinstall it 6 Reconnect pump hose 7 Slide platform back into reservoir Note Bottom of platform has a raised area that fits only on the left side Be sure platform is placed all the way back in the re...

Страница 27: ...itch is in the ON position 16 Reinstall all panels 17 Reconnect electrical power Inlet Water Solenoid Valve 1 Disconnect Electrical Power 2 Pull unit out to get back access 3 Remove front panel 4 Remove top panel 5 Remove right side panel 6 Remove back panel 7 Shut water off to unit 8 Remove utility panel lower left corner viewed from the back Valve bracket is attached to panel 9 Locate inlet wate...

Страница 28: ...e Ajuste del tiempo de cosecha Regolazione orario di raccolta Anpassung der Erntezeit ON OFF WASH MARCHE ARRÊT LAVAGE ENCENDIDO APAGADO LAVADO ON OFF LAVAGGIO EIN AUS WASCHEN Freeze Mode Mode de congélation Modo de congelamiento Modalità congelamento Gefriermodus Timer On Minuterie allumée Cronómetro encendido Timer attivato Timer eingeschaltet 17 3386 01 Ice Bridge Thickness Adjustment Adjust by ...

Страница 29: ... from tube in bin 8 Remove evaporator cover 9 Remove screws holding evaporator to its frame lift evaporator up out of the way Note Support evaporator as needed to prevent damage 10 Disconnect electrical wires from water pump 11 Remove thermistor from pump hose and reservoir 12 Disconnect bin drain 13 Disconnect water supply hose from evaporator platen 14 Lift bin with reservoir off of deck 15 Remo...

Страница 30: ...CTRONIC CONTROL ELECTRONIC CONTROL EVAPORATOR TEMP SENSOR FAN MOTOR HOT GAS SOLENOID TRANSFORMER 12V LINE N or L2 L1 3 4 WATER SOLENOID WATER PUMP COMPRESSOR SWITCHES ON THIS UNIT SHOWN IN FREEZE CYCLE LINE LOAD TRANSFORMER EARTH GROUND ON WASH 3 WAY SWITCH WASH ON FAN CONTROL PUMP COM A C PWR COM NC HARVEST BN W W WATER TEMP SENSOR FREEZE NO PUMP NC 3 2 1 5 6 4 6 5 2 3 4 1 PUMP COM HARV NC PUMP N...

Страница 31: ...SCOTSMAN ICE SYSTEMS 775 Corporate Woods Parkway Vernon Hills IL 60061 USA 847 215 4500 800 726 8762 www scotsman ice com ...

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