background image

12

Service

Ice machine operation (all models)

Follett’s ice machine consists of fi ve distinct functional systems covered in detail as follows:

• Water system
•  Electrical control system
• Mechanical assembly
• Refrigeration system
• Bin full

The Horizon ice machine overview

The Follett Horizon ice machine uses a horizontal, cylindrical evaporator to freeze water on its inner surface. The 
refrigeration cycle is continuous; there is no batch cycle. The evaporator is fl ooded with water and the level is 
controlled by sensors in a reservoir. A rotating auger (22 RPM) continuously scrapes ice from the inner wall of the 
evaporator. The auger moves harvested ice through the evaporator into an ice extrusion canal. The ice is forced 
through a restrictive nozzle that squeezes out the water and creates the Chewblet. The continuous extrusion process 
pushes the Chewblets through a transport tube into a dispenser or bin. 

A solid state PC board controls and monitors the functionality of the ice machine. In addition to sequencing electrical 
components, the board monitors various operational parameters. A full complement of indicator lights allows visual 
status of the machine's operation. Additionally, the PC board controls the self-fl ushing feature of the ice machine. The 
evaporator water is periodically drained and replenished to remove minerals and sediment.

A unique “bin full” detection system is incorporated in the Horizon ice machine. A switch located at the ice discharge 
port of the machine detects the position of the transport tube. When the bin fi lls up with ice, the transport tube 
moves out of the normal running position, and the switch turns the ice maker off. A domed housing at the end of the 
transport tube contains the ice extrusion loads during shut down.

water
inlet

auger

compression
nozzle

ice 
transport 
tube

Harvest system diagram

Summary of Contents for C33984

Page 1: ...RPO RAT ION PAR T NO HZ LOW SID E CHA RG E VOL TS Eas ton Pen nsy lvan ia Mod ule No Stoc k Mod ule Iden tifica tion Plate Serv ice No Prod uct REF RIG ERA NT R C AMP S AMP S DES IGN PRE SSU RE HIG H...

Page 2: ...2...

Page 3: ...put Wiring diagram evaporator unit Wiring diagram condenser unit Gearmotor data Mechanical system Evaporator disassembly Evaporator reassembly Refrigeration system Condenser unit operation Refrigerant...

Page 4: ...lf contained W Water cooled self contained R Air cooled remote condensing unit N Air cooled no condensing unit for connection to parallel rack system R V S D 1400 HC MC Maestro Chewblet 400 Series HC...

Page 5: ...00 F 38 C max 50 F 10 C min Water temperature 90 F 32 C max 45 F 7 C min Water pressure 70 psi max 483 kPa 10 psi min 69 kPa Condenser unit Air temperature 120 F 49 C max 20 F 29 C min Refrigeration 3...

Page 6: ...OD push in water inlet 5 8 suction line 3 8 liquid line Ice transport tube connection 19 3 491mm 2 5 64mm 15 69 399mm 2 53 65mm 6 95 177mm 14 47 368mm 2 87 73mm 1 81 46mm 3 4 MPT drain PSIG THE USA MA...

Page 7: ...kly exterior care The exterior may be cleaned with a stainless cleaner such as 3M Stainless Steel Cleaner Polish or equivalent Semi annual evaporator cleaning every 6 months WARNING Wear rubber gloves...

Page 8: ...WATER light comes on Fig 2 Note Do not use bleach to sanitize or clean the ice machine 3 Replace cover on cleaning cup Wait until machine restarts Machine will clean then flush 3 times in approximatel...

Page 9: ...SANITIZER Fill until HI WATER light comes on Fig 5 Note Do not use bleach to sanitize or clean the ice machine 6 Replace cover on cleaning cup Wait until machine restarts Machine will sanitize then fl...

Page 10: ...ng disposable food service grade gloves insert dry Sani Sponge kit item 00132068 Next insert Sani Sponge soaked in Nu Calgon IMS II sanitizer solution Push both Sani Sponges down ice transport tube wi...

Page 11: ...wer switch ON Ice pushes Sani Sponges through tube Fig 11 12 Place a sanitary 2 gallon or larger container in bin or dispenser to collect Sani Sponges and ice for 10 minutes Collect 5 5 lbs 3kg of ice...

Page 12: ...rusion process pushes the Chewblets through a transport tube into a dispenser or bin A solid state PC board controls and monitors the functionality of the ice machine In addition to sequencing electri...

Page 13: ...rises and falls between the Normal High and Normal Low sensors As water is consumed to make ice the level will fall until the Normal Low sensor is exposed triggering the water feed solenoid on Water w...

Page 14: ...ice the LOW BIN light goes out and the refrigeration and auger drive systems immediately shut down The TIME DELAY light comes on initiating the time delay period When the time delay expires the machin...

Page 15: ...ain energized Should water return it will fill to the normal low sensor and the machine will resume normal operation The error will clear automatically DRAIN CLOG The drain clog sensor located in the...

Page 16: ...23 J22 J24 GRAY GRAY PAIR RED GRAY PAIR J51 4 3 2 1 INPUT 2 OR MAINT PURGE S2 MOM CLEAN S3 FULL BIN CONTACT CLOSURE RETURN V 3 WIRE V OUT light on WATER LEVEL COM DRAIN CLOG 8 LE 7 LOW LE ALARM 4 LE C...

Page 17: ...condensing unit wiring diagram FAN 2 L1 CRANK CASE HEATER COMPRESSOR TERMINAL C S R GRD L1 T1 RED YELLOW BLACK ICM402 3 PHASE MONITOR T1 L1 T2 L2 L3 L2 T3 T2 COMPRESSOR CONTACTOR COIL TERMINAL BOARD...

Page 18: ...nscrew and remove stream divider as shown 3 Unplug and remove gearmotor as shown 4 Remove all traces of petrol gel from the auger shaft Fig 13 Fig 14 Fig 15 5 Unscrew and disconnect transport tube fro...

Page 19: ...9 Fig 16 8 Loosen nut on V band clamp and remove 9 Remove V band clamp from front of evaporator 10 Remove main housing as shown Fig 17 11 Remove and discard mating ring and seal 12 Carefully remove au...

Page 20: ...liquid soap in the area shown and slip on seal and spring Note Do not touch the sealing surfaces Use cardboard disk to install Fig 20 5 Reinstall main housing as shown Fig 18 Evaporator reassembly 1 R...

Page 21: ...g sure that insulation is properly seated between gearmotor and main housing as shown 16 Firmly tighten four gearmotor bolts in place removed for clarity Note Shuttle housing Fig 21 6 Orient auger sha...

Page 22: ...26 21 Lubricate body of stream divider with petrol gel and reinstall 22 Plug gearmotor power cord into electrical box Fig 24 17 Insert a bolt into the auger shaft and finger tighten 18 Using a wrench...

Page 23: ...installed in the liquid line between the receiver and the condenser to prevent liquid migration from the receiver to the condenser during the off cycle The low pressure control will start the condens...

Page 24: ...th service port condenser high side service valve with service port filter drier high side service valve with service port low side service valve with service port high side service valve with service...

Page 25: ...em pressure should not rise If the system pressure rises and stabilizes there is moisture in the system and further evacuation is needed If the pressure continues to rise check the system for leaks Am...

Page 26: ...is down out of the sensor When the bin fills to the top and ice can no longer move through the tube the machine will force the shuttle flag up into the sensor shutting the machine off The shuttle actu...

Page 27: ...FRIG ON PURGE TIME DELAY CLEANING SERVICE HI AMPS HI PRESS DRAIN CLOG HI WATER CPU LO WATER POWER LOW BIN AUGER ON REFRIG ON PURGE TIME DELAY CLEANING SERVICE HI AMPS HI PRESS DRAIN CLOG HI WATER CPU...

Page 28: ...ble causes Corrective actions POWER LOW BIN AUGER ON REFRIG ON PURGE TIME DELAY CLEANING SERVICE HI AMPS HI PRESS DRAIN CLOG HI WATER CPU LO WATER POWER LOW BIN AUGER ON REFRIG ON PURGE TIME DELAY CLE...

Page 29: ...29...

Page 30: ...cement parts Evaporator assembly Order parts online www follettice com 8 9 12 11 10 36 28 38 39 23 33 37 40 32 29 34 17 18 18 30 26 23 24 25 24 24 27 23 35 31 23 13 14 15 16 1 3 19 17 23 28 18 5 20 21...

Page 31: ...p sanitizer includes 00124032 00130880 23 Elbow water 1 4 x 3 8 OD 00988030 24 Tubing water 1 4 OD 502079 25 Hardware mounting evaporator cap 00130989 26 Solenoid water feed 120V 00130823 27 Tee water...

Page 32: ...32 32 4 5 6 11 10 3 2 8 14 15 1 12 7 9 13 16 17 Low side assembly...

Page 33: ...ension 00156075 7 Valve expansion thermal includes 502830 and 00106534 00136317 8 Insulation TXV 502830 9 Valve shut off liquid line 00107060 10 Valve solenoid 00107052 11 Insulation bulb TXV 00106534...

Page 34: ...on Part 1 Cover electrical box remote 00130898 2 Board control circuit 120V includes 00132910 00132910 3 Stand off s set of 6 00130906 4 Switch evaporator purge 00114371 5 Switch evaporator clean 0011...

Page 35: ...Gasket coupling 00126532 8 Ring locking includes 00126532 00171371 9 Ice transport tube 10 3m 00171280 9 Ice transport tube 20 6m 00171298 10 Insulation transport tube 501176 11 Insulation elbow 00168...

Page 36: ...Stoc kMod ule Iden tifica tion Plat e Service No Prod uct RE FR IGE RA NT R C AM PS AM PS DE SIG N PR ES SU RE HIG H SID E MIN BRA NCH CIRC UIT AMP ACIT Y MAX BRA NCH CIRC UIT FUS E SIZE MO TO R CO M...

Page 37: ...nlet 502924 6 Elbow water inlet 502925 7 Coupling includes 00144675 00171207 8 O ring 00144675 9 Bulkhead fitting 00171215 10 Nut 00145342 11 Hose clamp 500377 13 Louvered docking assembly split syste...

Page 38: ...935 10 Filter drier liquid 00175869 11 Compressor 00185785 12 Shut off valve suction line 00107078 13 Shut off valve liquid line 00107060 14 Crankcase heater 00185827 15 Sight glass 00175885 16 Conden...

Page 39: ...fan guard 00123067 6 Receiver 00991034 7 Filter drier liquid 00998245 8 Compressor 00998229 9 Shut off valve suction line 00107078 10 Shut off valve liquid line 00107060 11 Sight glass 00175885 12 Con...

Page 40: ...040 USA Toll free 877 612 50861 1 610 252 7301 www follettice com Horizon Harmony Ice Manager SafeCLEAN Sani Sponge RIDE and Vision are trademarks of Follett Corporation Chewblet is a registered trade...

Reviews: