Grant FF Series Manuale utente

Revised January 2012



    FFSERIESOFFLAKEICEMACHINES COMPLETEUNIT

（）

SERVICEMANUALFORFF0.4AR&FF0.6ARMODELS 

230v1Phase50HZ

（）

Refrigerant:R404A



Revised January 2012

TableofContents



IV.OperatingPrinciples

Maintenance&TroubleShooting



III.Packing,TransportationandInstallation



VI.ElectricalInformation.....................................................................................................15

a)ControlPanel.............................................................................................................15

b)ElectricalWiringDiagramoftheSliceIceMachine..................................................16

c)T imerControlW iringDiagram.................................................................................. 17







VII.PCBoardExplained .....................................................................................................18

1.CircuitBoardLayout ................................................................................................18

a)IcemakingmachinePCBoardlayout(back)......................................................18

b)Icemakingexternalindicatorsmallboardlayout..............................................18

c)icefullsensorsensitivitysmallboardlayout......................................................19



I.Overview.............................................................................................................................4



II.OperationConditions&PerformanceParameters



2.WaterCirculationSystem...........................................................................................................10

3.IcelevelControlSystem ...........................................................................................................10

4.TheGearbox...............................................................................................................................11

5.P.C.BoardControllingSystem.....................................................................................................11



1.Packing,TransportingandStoring................................................................................................7

2.Installation...................................................................................................................................7

3.InstallationProcedures.................................................................................................................8

InstallationSchematicDiagramforSplitUnit...............................................................................8

5.OperatingInstructions ...............................................................................................................9

1.EquipmentMaintenance............................................................................................................12

2.CleaningProcedures...................................................................................................................13

3.TroubleShooting........................................................................................................................14



1.ConditionsforOperationofFFSeriesScaleIceMachine..............................................................

4 2.DiagramforIceOutputofScaleIceMachine...............................................................................

 4

3.ParametersofScaleIceMachine..................................................................................................5



4.WorkingPressure(Ambienttemperature:25)...........................................................................5

5.RefrigerantCharge.......................................................................................................................5

6.Dimensions,Drawings,Airflow&Clearances..............................................................................6

Revised January 2012

2.FaultIndicator...........................................................................................................19

3.DipSwitch..................................................................................................................20

a)8‐bitDIPSwitch...................................................................................................20 b)4‐

bitDIPSwitch..................................................................................................21



4.ElectricalWiringDiagram..........................................................................................22

a)IcemachinePCBoardwiringdiagram...............................................................22

b)IceMachineexternalindicator(smallboard)wiringdiagram...........................23

c)IceMakingsensorwiringdiagram.....................................................................23



5.IceFullSensorsensitivityandDIPswitchsettings.....................................................24

a)Fullsensorsensitivitysettings............................................................................24

b)IceFullsensorsensitivityandadjustmentmethod...........................................24



VIII.GrantT

imer...........................................................................................................25

a)PartsIndentification............................................................................................25

b)OperatingInstructions........................................................................................26

c)Specifications.......................................................................................................27



IX.TechnicalNotes...................................................................................................

.....28 

X.ServiceBulletins…................................................................................................

.....29 



Revised January 2012



I. Overview

0.4AR 



Readthisservicemanualcarefullybeforeinstallation,troubleshootingandoperationofthissub‐zeroice

machine.



This Service Manual gives an introduction of operation conditions, performance parameters, installation,

troubleshootingandoperatingproceduresofFFseriessub‐zeroicemachines.  Theicemakingsystemhas

a vertical, static evaporator with a rotating auger. The machine is equipped with a solid state PC board,

whichcontrolsandmonitorsthefunctionalityoftheicemachine,indicating: 



(1)Icelevel

(2)Waterlevel 

(3)Motorandgearboxoperation

(4)Temperatureofcondenser

(5)Levelofrefrigerant

(6)Temperatureofevaporator



II.OperationConditions&PerformanceParameters



1.ConditionsforOperationofFFScaleIceMachine 



 MinimumOperatingMaximumOperating

Conditions Conditions

AmbientTemperature 

5℃ 46℃

WaterTemperature 

5℃ 35℃

WaterPressure 0.15MPa 0.5MPa

VoltageVariation ‐10% +10%



2.DiagramforIceOutputofsubZeroIceMachine



                Watertemperature( )     Watertemperature( )

℃ ℃

Ice output in 24 hrs (kg)

Ambient Temperature

Revised January 2012

Note:

 



3.ParametersofSubZeroIceMachine



 

Model FF0.4ARFF0.6AR

Voltage(v) 230V/50HZ/1N230V/50HZ/1N

Current(A) 14.518

CondensingType AircooledAircooled

Compressor(HP) 2 3

Power(W) 31003900

WiringSize(mm2) 3x2.5 3x2.5

WaterUsageL/h 17 25

WaterInlet(outsidethread) ¾” ¾”

Drain(outsidediametermm) 21 21

Weight(kg) 180250



4.WorkingPressure(Ambienttemperature25℃,R404A)



Model FF0.4AR FF0.6AR

DischargePressure 1850Kpa 1850Kpa

SuctionPressure 200Kpa 200Kpa



5.RefrigerantCharge



Model FF0.4ARFF0.6AR

RefrigerantCharge(g) 2000g 3200g



Note: 

Thismayvaryifmachineparameterschange



Daily ice output is directly related to the air temperature at the condenser and inlet water temperature.

In order to keep optimum operation performance of FF series sub‐zero ice machines maintenance must

be performedonaregularbasisasperservicemanualsectionV.



Model description: FF×××AR model is a complete unit including refrigeration system ready for

connection to power,wateranddrainage. 

Revised January 2012

Model

FF0.4AR



FF0.6AR



W(mm)

1090

1250



6.Drawings,Dimensions,AirflowandClearances 

 

      



D(mm)

700

750

H(mm)

720

820



Externaldimensionsincl

stainlesssteelcover 

Revised January 2012



Packing,TransportationandStoringTheicemachineispackedinplywood.

Beware of collision, vibration, ti lting , inversion, etc. in transportation and storage. Ice machine

should bekeptbelow40C,dry,andwell‐ventilated



Beforeyoubegin:



Checkyourpaperworktodeterminethemodelreceivedmatchesyourorder.

Afteruncratingandremovingallpackingmaterial,inspectequipmentforanyshippingdamage.

Check whether all connections (water system, refrigerant system, etc.), electrical connections

(wires, PCboard,etc.)andmechanicalsystemareingoodcondition. 



Installation(Seefigure2)

Electrical connections must comply with local standards and requirements on the rating plate

of the machine.

Anisolationswitchmustbeinstalled 

Constant water supply (Pressure between 0.15 kPa to 0.5 MPa) and stop cock shall be

supplied within 1 mtr of the ice machine. Suitable drainage point shall be within 1 mtr of ice

machine. Two separate

waterdrainagelinesshallberequiredfordrainingtheicemachineandtheicestoragebin.

The ice machine shall not be placed (1) without suitable ventilation; (2) next to heat sources;

or (3) outdoors.

Toensureicequalityawaterfiltershouldbeinstalledinicemakerinletwaterline.

Packing /Transportation/StoringandInstallation

Revised January 2012



3.InstallationProcedures 



(1) Placetheicemachineonappropriateicestoragebinandfix.Seefigure2.

(2) Ensuremachineislevel

(3) Connectwatersupplywithstopcock.

(4) Connectthedrainswithsufficientfall.

(5) Openthewatersupplystopcock.

(6) Connectpowertoapprovedoutlet.

(7) Useaqualifiedservicetechnicianforinstallation.

(8) Seefigure3forinstallationofsplitunit.(Seefigure3)



Revised January 2012



OperatingInstructions



(1)Tostartup

After the machine has been installed as per instructions, plug in and switch on. The indicator light

A (the green light) will come on. Turn the Manual “Off/Auto” to “manual on” position (turn the

switch in a clockwisedirection) and the machine wi ll be on 5 minutes’ delay (the four thred light

of the secondrow of thecontrolboxwillbeflashing).After5minutes’delay,themachinewillstart. 



(2)Tostopthemachine

Turn off the Manual “Off/Auto” switch and the machine will stop. Each time you turn on the

“On/Off” switchandstartthemachine,themachinewillbegintorunautomaticallyafter5minutes’delay.

A.The5indicatorlightsinthesecondrowonthefrontpanelofthecontrolboxmonitorthefollowing:



Note:

1. Reasonsforhighcondensertemperature:faultyfanmotor;blockedcondenser;highambient

temperature;damagedcondenser,faultytemperaturesensororP.Cboard.

2. Reasonsforhighevaporatortemperature:checkrefrigerationsystem,faultyevaporatortemperature

sensororP.Cboard.



B.  Thethirdredlightinthefirstrow(C)onthefrontpanelofthecontrolboxwillbeonifthedischarge

pressureofthecompressorishigherthanthespecifiedvalue(factoryset)orifthesuctionpressureis

lower than the specified value (factory set). Please identify causes and rectify before resetting the

machinemanually.

C.  Ineventofemergency,pushthe“EmergencyShutdown”buttontostopthemachine.

Revised January 2012



1. WaterCirculationSystem(Seefigure6)



Water enters the machine through the float valve and into the water reservoir. Water is then

pumped to the water distributor by a water pump and then flows on to the inner surface of the

evaporator. It is cooled down gradually and forms ice. The ice blades scrape the ice from the

inner surface of the evaporator and it drops into the ice storage bin through the ice Shute. Some

of the remaining water will flowbacktothewaterreservoir.



Note:

a.Watersupplyismonitoredbyasensor.Ifthereisnowaterinthewaterreservoirorthewateristoosoft

(not containing mineral substances), the P.C. board will stop the machine, and the yellow light will

indicatealackofwater.

b.Thewaterlevelhasbeenfactoryset.  DoNOTadjustit.  Ifthewaterlevelrequiresadjusting,thiscan

beachievedbyadjustingthevalveinthewaterreservoir.(Thecorrectlevelis26mmfromthebottomof

thewaterdistributor) 



2. IceLevelControlSystem



There is a light‐operated ice level controller between the machine and the ice storage bin. When

the storage bin is full of ice, the ice wi ll break the light  beam of the ice l evel photoelec tr ic

sensor  and then the 

redLEDinthecenterofP.C.boardwillbeturnedoff.Theyellowlightindicating“icefull”willbeturnedon

after the light beam has been broken for a continuous period of time and stops the machine. The

light

beamwillberesetandtheredlightinthecenteroftheP.C.boardwillbeturnedoniftheiceisremoved.

IV.OperatingPrinciples

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