icetro ISI-271 Service Manual
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icetro ISI-271 Service Manual

icetro ISI-271 Service Manual

Soft serve freezers
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Original Service Instructions
Model ISI-271
Soft Serve Freezers
SERVICE
MANUAL
11/25/23 (Original Publication)

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Summary of Contents for icetro ISI-271

  • Page 1 SERVICE MANUAL Model ISI-271 Soft Serve Freezers Original Service Instructions 11/25/23 (Original Publication)

  • Page 2: Table Of Contents

    Model ISI-271 Specifications ........

  • Page 3: Section 1: Introduction

    Section 1: Introduction • Safety • Model ISI-271 Specifications • Running Specifications • General Installation Instructions • Environmental Notices • User Interface Introduction Models ISI-271...

  • Page 4: Safety

    If there is water inside the power cord or process it for use. an earth leakage circuit breaker It can cause fires. turn off the earth leakage circuit breaker and dry it before use. It can cause electrical shocks or fires. Models ISI-271 Introduction...
  • Page 5 Otherwise, it can cause malfunctions • Clean the filter periodically. Otherwise, the cooling performance will degrade. • Comply with the user guideline suggested by the maker. Otherwise, it can cause malfunctions. Don’t let a person who was not educated. Introduction Models ISI-271...
  • Page 6 This appliance shall be that access to the service area is restricted to persons having knowledge and practical experience of the appliance, in particular as far as safety and hygiene are concerned. Models ISI-271 Introduction...

  • Page 7: Model Isi-271 Specifications

    INTRODUCTION Model ISI-271 Specifications This machine may be manufactured in other electrical Freezing Cylinder characteristics. Refer to the local Taylor distributor for availability. (For exact electrical information, always see One, 2.85 qt. (2.7 L) the data label of the machine.)
  • Page 8 CUP SENSOR CONDENSER FILTER DRAIN BOX FOOT Left view Right view FRONT COVER UP INSIDE: CONTROL BOX FRONT FEEDER SIDE COVER SIDE PANEL R DRAIN SLUG ASSY FRONT FEEDER FEEDER COVER SIDE PANEL L FEED WATER SECTION Models ISI-271 Introduction...

  • Page 9: Running Specifications

    On : 2.45MPa(355.3psi) Off : 2.94MPa(426.4psi) Fan Switch(Pressure Interlock) On : 2.06MPa(298.8psi) Off : 1.67MPa(242.2psi) Low Side (Suction) Suction pressure equals expansion valve setting. High Side (Discharge) High side pressure varies for air-cooled machines, depending on the ambient temperature. Introduction Models ISI-271...

  • Page 10: General Installation Instructions

    • Authorized service personnel should consult OSHA Standard 29CFRI910.147 or the applicable code of the local area for the industry standards on lockout/tagout procedures before beginning any installation or repairs. Models ISI-271 Introduction...
  • Page 11 Failure to follow these instructions may result in WARNING! This machine must be properly electrocution or equipment damage. grounded! Failure to do so can result in severe personal injury from electrical shock! Introduction Models ISI-271...
  • Page 12 Please recycling, and reclaiming systems. If you have any ques- see the applicable national, state, and local codes for tions regarding these laws, please contact the factory determining the proper configuration. service department. 1-10 Models ISI-271 Introduction...
  • Page 13 Failure to follow this instruction may result in per- sonal injury or death from electrical shock or hazardous moving parts, as well as poor performance or damage to the machine. Introduction 1-11 Models ISI-271...

  • Page 14: Environmental Notices

    NOISE LEVEL: Airborne noise emission does not exceed 78 dB(A) when measured at a distance of 1.0 meter from the surface of the machine at a height of 1.6 meters from the floor. 1-12 Models ISI-271 Introduction...

  • Page 15: User Interface

    ● Button is used to stop all the functions. ‘DEFROST’ ● Used when defrosting the soft ice cream. ‘AUTO’ ‘REGENERATION’ ● Used when the Soft ● Button is used to make ice cream solution is soft ice cream. watery. Introduction Models ISI-271 1-13...
  • Page 16 Auto mode is locked out and the freezer will be placed in the Standby mode. To initiate the refrigeration system, add mix to the mix hopper and touch the Auto button .The freezer will automatically begin operation. 1-14 Models ISI-271 Introduction...

  • Page 17: Section 2: Controls

    Section 2: Controls • Description of the functional buttons • Explanation of the button function Controls Models ISI-271...

  • Page 18: Description Of The Functional Buttons

    [ T e m p e r a t u r e ] ④ 8 . 2 °C / 8 . 2 °C H o p p e r : - 6 . 2 °C / - 6 . 2 °C D r u m : Models ISI-271 Controls...
  • Page 19 : - 6 . 2 °C / - 6 . 2 °C N o w 8 . 0 °C / 8 . 0 °C S e t R e m a i n : 1 m i n / 1 m i n Controls Models ISI-271...
  • Page 20 [ H e a t S t a n d b y ] D r u m 66 . 2 °C / 66 . 2 °C N o w 6 . 0 °C / 6 . 0 °C S e t Models ISI-271 Controls...
  • Page 21 D o o r : The time and date set up in the freezer are displayed. [ C u r r e n t t i m e ] 2 0 1 2. 1 2. 1 7 : 0 1 : Controls Models ISI-271...
  • Page 22 2 0 1 2 . 0 9 . 2 2 . I 5 : I 5 S u c c e s s [ H e a t F a i l ] T o t a l : Models ISI-271 Controls...

  • Page 23: Explanation Of The Button Function

    Adjust the settings upon start of producing. consulting with the installation engineer when changing After 100%, producing will be done at the level as the soft ice cream level. shown at ‘②’ . ‘③’ applied when discharging ice cream. Controls Models ISI-271...
  • Page 24 By controlling this time, the ejection dispensing. amount can be big or small. That is because changes canoccur according to the hardness of the soft ice cream, time, and the characteristics of the raw material. Models ISI-271 Controls...
  • Page 25 D e t a i l S e t t i n g 5. P i s t o n O p e n [ s e c ] 1 . 8 1 . 8 1 . 8 Controls Models ISI-271...
  • Page 26 Category ‘4’ is reset to the default setting. [ 4 - 0 ] M o d e l S e l e c t I S I S – 2 7 3 T H C _ I A A 2-10 Models ISI-271 Controls...
  • Page 27 [ 4 - 8 ] L i m i t L e v e l ( A U T O ) : + 0 . 8 A Controls Models ISI-271 2-11...
  • Page 28 If pasteurization continues until the time set for this C e l s i u s F a h r e n h e i t category, pasteurization failure is recorded and the machine needs to be checked for problems 2-12 Models ISI-271 Controls...
  • Page 29 3 . B u t t o n B a n 6 0 s e c When voltage is 3W, 3 phases, voltage shall be adjusted based on the phase voltage. 4-18-2: Refresh time setting Set the refresh’s Operating time. Controls Models ISI-271 2-13...
  • Page 30 The compressor is operated when the temperature C l e a n i n g reaches the temperature that has been set for this 5 . L o c k F r e e z e r o f f category. 2-14 Models ISI-271 Controls...
  • Page 31 5 . O v e r 4 0 C - 5 . 0 C reach the operation temperature. Then setting the rest time for the agitator can control Controls Models ISI-271 2-15...
  • Page 32 [ 4 - 3 2 ] S e n s i n g M i x 1 . M i x L o w L e v e l : 2 . M i x O u t L e v e l : 2-16 Models ISI-271 Controls...
  • Page 33 4 . O v e r T i m e 5 s e c S t a n d b y 2 . M i x O u t 3 . V e n d E r r o r Controls Models ISI-271 2-17...
  • Page 34 1 . B u t t o n U s e 2 . A u t o S t a n d b y 3 . S t a n d b y C y c l e : 1 d a y 2-18 Models ISI-271 Controls...
  • Page 35 Either : At the operation of either the freezing valve or refrigeration valve, the compressor starts to operate. Drum on : Only when the freezing valve operates, refrigeration valve starts to operate. Controls Models ISI-271 2-19...
  • Page 36 E q u a l i z e r 3 . V a l v e C l o s e 1 m i n 4 . C o m p . W o r k 0 s e c 2-20 Models ISI-271 Controls...
  • Page 37 D i s c h a r g e T e m p 1 0 . 0 °C resale 3 . O p e r a t e T e m p : Set up the reference current for deciding ‘LOW’ in resale Controls Models ISI-271 2-21...
  • Page 38 9-9-4: Initial hot gas valve cycle operating time set up C u r r e n t Set up the time applied to the cycle operation of ‘ 9- - 0 . 2 A 9-2’ and ‘ 9-9-3’ . 2-22 Models ISI-271 Controls...
  • Page 39 2 . S p e e d C o n t r o l 3 . P o s i t i o n S e t O f f 1 1 1 1 2 . I t e m - 9 O f f Controls Models ISI-271 2-23...
  • Page 40 When recycled, however, overrun can drop and ejection amount can be different. ●The password of this item can be assigned to the technicians authorized by the manufacturer under proper security procedures. Releasing the password can be subject to legal punishment. 2-24 Models ISI-271 Controls...
  • Page 41 (Cooling Cycle) FREEZING CYLINDER EXPANSION VALVE SOLENOID VALVE LIQUID RECEIVER CAPILLARY CONDENSER FILTER DRYER SOLENOID VALVE ACCUMULATOR CHECK VALVE(→) CAPILLARY STRAINER FAN P SWITCH CHECK VALVE(→) 4-WAY VALVE EXPANSION VALVE PRESSURE SWITCH COMPRESSOR SOLENOID VALVE CHECK VALVE(→) Models ISI-271 Controls 2-25...
  • Page 42 SOLENOID VALVE LIQUID RECEIVER CAPILLARY CONDENSER FILTER DRYER SOLENOID VALVE ACCUMULATOR CHECK VALVE(→) CAPILLARY STRAINER FAN P SWITCH CHECK VALVE(→) 4-WAY VALVE EXPANSION VALVE PRESSURE SWITCH COMPRESSOR SOLENOID VALVE Hea n g Bypass Flow CHECK VALVE(→) Models ISI-271 2-26 Controls...

  • Page 43: Refrigeration Schematic Ii

    CONTROLS Refrigeration Schematic II Normal operation Sterilization operation Models ISI-271 Controls 2-27...

  • Page 44: Section 3: Troubleshooting

    Section 3: Troubleshooting • General Troubleshooting Guide • Bacteria Troubleshooting Troubleshooting Models ISI-271...

  • Page 45: General Troubleshooting Guide

    If there is no problem w ith the Automatically Er19 Eva. Sensor Op. EVA sensor OPEN Operation connection, replace the sensor. deactivated If there is no problem w ith the Automatically Er20 Eva. Sensor St. EVA sensor SHORT Operation connection, replace the sensor. deactivated Models ISI-271 Troubleshooting...
  • Page 46 Remove foreign object from the Er46 Door Close Er. Door close error Reset pow er Stop door. Er47 Coin Mechanism Coin part error Empty coins. Reset pow er Stop Er48 Bill Validator Bill part error Empty bills. Reset pow er Stop Troubleshooting Models ISI-271...
  • Page 47 If the w iring is ok, replace the Automatically Er60 Invertor Comm. Invertor communication error Stop invertor. deactivated Control PCB communication If the w iring is ok, replace the Automatically Er61 Control Comm. Stop error Control PCB. deactivated Models ISI-271 Troubleshooting...

  • Page 48: Bacteria Troubleshooting

    Inspect O-rings for holes or tears. O-rings, seals and other wear items must be supplied by the freezer company to meet food industry standards. c. During the operating hours, periodically inspect the rear drip pan for excessive leakage. Troubleshooting Models ISI-271...
  • Page 49 (3.9°C). Storage temperatures above 45°F (7.2°C). Will allow cell division in as little as 1 hour. f. Once the mix is placed in the hopper, covers must be properly installed to maintain adequate refrigeration and to prevent airborne contaminants from entering the mix. Models ISI-271 Troubleshooting...

  • Page 50: Section 4: Parts

    • Model ISI-271THSN Exploded View • Operator Parts (Model ISI-271THSN) • Assy Control Box(Model ISI-271THSN) • Assy CSR Box • Dasher Assy(Model ISI-271THSN) • Display Panel Assy • Accessories • Brushes • Repair for refrigerant Lines • Replacement the parts Parts Models ISI-271...
  • Page 51 15. If a person other than an authorized engineer from the manufacturer repairs or modifiesthe product. 16. If malfunction is caused by failure to follow the "Safety warning / caution" on the operating manual. 17. If the water supply pipe froze and burst. Models ISI-271 Parts...

  • Page 52: Model Isi-271Thsn Exploded View

    PARTS Model ISI-271THSN Exploded View 69 70 Parts Models ISI-271...
  • Page 53 ASSY CSR BOX COMP FAN BKT 301166900 426070800 (208~230V, 60Hz) AXIAL FAN 353026500 ASSY CSR BOX MOTOR/KAKU/KA1238HA2BML,WIRE 426059300 (220~240V, 50Hz) BKT SOL VALVE 1 301160800 BKT COMP CAPACITOR 301162900 SOLENOID VALVE COIL 340011600 ASSY DRAIN SLUG 417013900 Models ISI-271 Parts...
  • Page 54 PACKING PUMP BODY (P14) 303024800 VENDING PCB 367009002 PACKING PUMP BODY (P14) 303024800 MAIN PCB 367008400 SENSOR BASE 655010600 BKT MAIN VENDING PCB AS 301173301 ASSY SENSOR CAP 319008900 ASSY PISTON MOTOR 406024600 ASSY CONTROL BOX 426070000 SHAFT AGITATOR 314026800 Parts Models ISI-271...

  • Page 55: Operator Parts(Model Isi-271Thsn)

    DRAIN BOX UP 336029100 WATER VAVLE 241000100 DRAIN BOX 336013800 DUCT COVER ASSY(전해연마) 610033500 DRAIN SLUG 610033400 BACK PANEL 317199910 SIDE PANEL (L) 349095100 SIDE PANEL (R) 349094600 AGITATOR IMPELLAR 390000800 CARBURETOR ASSY 729003800 FILTER 271 640008400 Models ISI-271 Parts...

  • Page 56: Assy Control Box(Model Isi-271Thsn)

    Assy Control Box(Model ISI-271THSN) Item Description Part No. Item Description Part No. CONTROL BOX 374143201 SMPS 629000600 MAGNET CONTACTOR 322005000 USB DOWNLOAD PCB 367009304 GROMMET BUSHING 232003500 BKT USB PCB 301151210 CONTROL PCB 367008200 ASSY TERMINAL BLOCK 704000700 Parts Models ISI-271...

  • Page 57: Assy Csr Box

    Item Description Part No. Item Description Part No. ASSY CSR BOX ASSY CSR BOX 426070800 426059300 (220V~240V, 50Hz) (208~230V, 60Hz) RUN CAPACITOR 659014500 RUN CAPACITOR 659019500 START CAPACITOR 659019400 START CAPACITOR 659006400 START RELAY 357019800 START-RELAY 357016000 Models ISI-271 Parts...

  • Page 58: Dasher Assy(Model Isi-271Thsn)

    PACKING PISTION TOP 303027600 PACKING DASHER COVER 303025800 PACKING DOWN (L/R) 303023900 DASHER LUG FRONT WHITE 403009600 JOINT BOLT TOP 214025700 DASHER ASSY 403013502 STAR MADE-별 388003610 DASHER LUG BACK WHITE 403009900 DASHER COVER -ETL(POM) 317136010 DASHER COVER(ACRYL) 317136003 Parts Models ISI-271...

  • Page 59: Display Panel Assy

    PARTS Display Panel Assy Item Description Part No. Item Description Part No. BADGE-TAYLOR 380167000 PUSH BUTTON 355024000 FRONT DISPLAY 380140201 BUTTON PCB 367008801 FRONT FEEDER COVER 317199200 LCD SET PCB 367008501 Models ISI-271 4-10 Parts...

  • Page 60: Accessories

    PARTS Accessories Item Description Part No. Item Description Part No. PACKING REMOVE HANDLE 233000300 HAYNES 221000200 Parts Models ISI-271 4-11...

  • Page 61: Brushes

    PARTS Brushes Item Description Part No. Item Description Part No. BRUSH CYLINDER 388004200 BRUSH 3 388001000 BRUSH COVER 388001800 BRUSH CARBURETOR OUT 388001900 Models ISI-271 4-12 Parts...

  • Page 62: Repair For Refrigerant Lines

    Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140PSIG). DO NOT use R 404A as a mixture with pressurized air for leak testing. Parts 4-13 Models ISI-271...

  • Page 63: Replacement The Parts

    13) Vacuum the system and inject the refrigerant. 14) Connect the terminal and assemble the terminal cover on its position. 15) Close the side door. 16) Turn on the power of ELCB. 4-14 Models ISI-271 Parts...
  • Page 64 17) Connect the harness to the fan motor. 14) Turn on the power of ELCB. 18) Tighten the screws on the back panel cover. 19) Close the side door. 20) Turn on the power of ELCB. Parts 4-15 Models ISI-271...
  • Page 65 10) Tighten the seven screws from the fan motor cover. 11) Tighten the six screws from the duct out panel. 12) Connect the harness to the fan motor. 13) Tighten the screws on the back panel cover. 14) Turn on the power of ELCB. 4-16 Models ISI-271 Parts...
  • Page 66 Section 5: Parts List • ISI-271THSN Parts List Models ISI-271...
  • Page 67 ISI-271THSN ISI- ISI- ISI- ISI- Part 271THSN- 271THSN- 271THSN- 271THSN- Description Warr. Class Rem arks Num ber TRUS-60- TRINT-60- TRINT-50- TRINT-50- 4 WAY VALVE BODY 340012400 4 WAY VALVE COIL 340013000 AGITATOR MOTOR HOUSING 390001100 AGITATOR SEALING PACKING 303020700 AGITATOR TOP PACKING TWO 303018600 ASSY CONTROL BOX 426070000...
  • Page 68 ISI- ISI- ISI- ISI- Part 271THSN- 271THSN- 271THSN- 271THSN- Description Warr. Class Rem arks Num ber TRUS-60- TRINT-60- TRINT-50- TRINT-50- ASSY DRAIN SLUG 417013900 ASSY FEEDER 730000502 ASSY GEARED MOTOR 406009200 /SPG/S6X57-X58 430001500 ASSY HOUSING SHAFT 460002500 ASSY MICRO SWITCH 460002510 ASSY MICRO SWITCH ASSY PISTON MOTOR...
  • Page 69 ISI- ISI- ISI- ISI- Part 271THSN- 271THSN- 271THSN- 271THSN- Description Warr. Class Rem arks Num ber TRUS-60- TRINT-60- TRINT-50- TRINT-50- COMP/NJ9238GK 394011800 (220~240V, 50Hz) COND OUT DUCT 301162200 CONDENSER ASSY-271THN 411029000 COVER FEEDER 317199700 CUP HOLDER 395007500 CUP SENSOR BOLT 214025500 DASHER MOTOR 353036800...
  • Page 70 ISI- ISI- ISI- ISI- Part 271THSN- 271THSN- 271THSN- 271THSN- Description Warr. Class Rem arks Num ber TRUS-60- TRINT-60- TRINT-50- TRINT-50- FRONT FEEDER SIDE COVER 317199400 INVERTER 500000305 JAW COUPLING 612000400 MAIN PCB 367008400 MIX DOWN CAP 655011200 MIX LOW PACKING ONE 303021300 MIX SENSOR SHAFT 655010100...
  • Page 71 ISI- ISI- ISI- ISI- Part 271THSN- 271THSN- 271THSN- 271THSN- Description Warr. Class Rem arks Num ber TRUS-60- TRINT-60- TRINT-50- TRINT-50- SHAFT TOP BEARING 314012900 SOLENOID VALVE COIL 340013100 SOLENOID VALVE COIL 340026300 SOLENOID VALVE COIL 340011600 SPEAKER 633000300 SPEED REDUCER 355013100 SUPPORT FEEDER 443058500...
  • Page 72 Section 6: Wiring Diagrams Wiring Diagrams Models ISI-271...
  • Page 73 Wiring Diagrams Models ISI-271 Wiring Diagrams...

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