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Estella 348DSC67 Service Manual

Reversible dough sheeters
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Reversible Dough Sheeters
Model: 348DSC67, 348DSC78, 348DSF78, 348DSF94
NOTICE
This manual is for a certified service technician and should not be used by those who are not properly trained.
This manual cannot cover all possible conditions that may occur and is not intended to be all encompassing.
You should read this manual in its entirety and the specific repair you wish to do prior to starting the repair.
This will allow you to determine if you have the correct tools, instruments, and skills to perform the procedure.
Service Manual
Service Manual
REVISED: 06/2023

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Summary of Contents for Estella 348DSC67

  • Page 1 Service Manual Reversible Dough Sheeters REVISED: 06/2023 Model: 348DSC67, 348DSC78, 348DSF78, 348DSF94 NOTICE This manual is for a certified service technician and should not be used by those who are not properly trained. This manual cannot cover all possible conditions that may occur and is not intended to be all encompassing.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TROUBLESHOOTING ..............................3 BELT REPLACEMENT ...............................4 PART TESTING ...................................5 EMERGENCY STOP BUTTON...........................5 ON / OFF SWITCH ...............................5 FORWARD & REVERSE SWITCHES ........................6 DRIVE MOTOR ................................6 MOTOR CONTACTORS ..............................7 PART REPLACEMENT ..............................8 PRE-MAINTENANCE ..............................8 ON / OFF SWITCH ...............................8 EMERGENCY STOP BUTTON...........................8 FORWARD &...

  • Page 3: Troubleshooting

    TROUBLESHOOTING Problem Possible Solution Ensure power supply is 'ON' Ensure unit is plugged into the correct power supply Ensure guards are down and switches are working Check emergency stop button is released and working correctly Check the power switch is 'ON' and working correctly Rollers do not move Check voltage at the overload protector, reset if necessary Check belt is not slipping or damaged or worn...

  • Page 4: Belt Replacement

    BELT REPLACEMENT (Fig. 1, 2 & 3) Fig. 1 1. Ensure the unit is turned 'OFF' and disconnected from the power supply 2. On floor models, lift belt bed frame up to gain access to extension pans and remove four hex head bolts holding shims in place with am 8mm socket or wrench and remove the shims.

  • Page 5: Part Testing

    PART TESTING EMERGENCY STOP BUTTON (Fig. 9, 10 & 11) Fig. 9 Fig. 10 1. Check for continuity, ensure unit is turned 'OFF' and disconnected from the power supply, disconnect the wire connections (Note their locations) Continuity should be found between 1 & 2 without the depressing button (Fig.

  • Page 6: Forward & Reverse Switches

    PART TESTING FORWARD & REVERSE SWITCHES Fig. 14 (Fig. 14 & 15) 1. With unit turned 'OFF' and disconnected from the power supply, check for continuity between the terminals Continuity should be found ONLY when arm roller is depressed. You should also hear a 'click' noise when the arm is depressed (Fig.

  • Page 7: Motor Contactors

    PART TESTING MOTOR CONTACTORS (Fig. 19 & 20) 1. Check for continuity, ensure unit is turned 'OFF' and disconnected from the power supply, disconnect the wire connections (Note their locations) Continuity should be found across L1 & T1, L2 & T2, L3 & T3, NC & NC, when the center section is pressed (Fig.

  • Page 8: Part Replacement

    PART REPLACEMENT Fig. 21 Fig. 22 PRE-MAINTENANCE For contactors, thermal protector, drive gears and chain 1. Disconnect from the power supply 2. Remove the socket head cap screws holding the side panel on with a 5mm hex key (Fig. 21) For ON / OFF switch, E-Stop, direction switches 1.

  • Page 9: Forward & Reverse Switch

    PART REPLACEMENT Fig. 28 FORWARD & REVERSE SWITCH 1. Follow pre-maintenance steps 2. With the side cover removed, flip it over to locate the switches 3. Remove the wire terminals from the switch you want to replace. Note their locations for new install (Fig.

  • Page 10: Drive Motor (Countertop)

    PART REPLACEMENT DRIVE MOTOR (COUNTERTOP) 1. Follow pre-maintenance steps 2. With the side cover removed, locate the drive chain master link (Fig. 33) 3. Remove drive chain master link by pushing the locking connector off of the roller pins. You may need to loosen the tensioner to remove the chain.

  • Page 11: Drive Motor (Floor)

    PART REPLACEMENT Fig. 39 DRIVE MOTOR (FLOOR) 1. Follow pre-maintenance steps 2. Remove hex head bolts holding base cover plate to bottom frame with an 8mm socket or wrench (Fig. 39) 3. Remove drive chain master link by pushing the locking connector off of the roller pins. You may need to loosen the motor mounting bolts to remove the chain.

  • Page 12: Adjustment Gear Assembly

    PART REPLACEMENT ADJUSTMENT GEAR ASSEMBLY Fig. 45 Fig. 44 1. Follow pre-maintenance steps 2. With the side cover removed, locate the directional gears (Fig. 44) 3. Remove the hex nut securing the adjustment gear assembly in place with a 17mm socket or wrench (Fig.

  • Page 13: Drive Roller Gear

    PART REPLACEMENT DRIVE ROLLER GEAR Fig. 52 1. Follow pre-maintenance steps Fig. 51 2. With the side cover removed, locate the drive roller gear (Fig. 51) 3. Remove the hex head bolt holding the drive gears in place with a 13mm socket or wrench (Fig.

  • Page 14: Drive Sprockets

    PART REPLACEMENT COUNTERTOP MODEL SPROCKETS DRIVE SPROCKETS Fig. 58 1. Follow pre-maintenance steps 2. With the side cover removed, locate the drive sprocket you need to replace (Fig. 58) 3. Loosen chain tensioner bolt and remove chain master link to remove drive chain from all sockets (Fig.

  • Page 15: Drive Sprockets

    PART REPLACEMENT FLOOR MODEL SPROCKETS DRIVE SPROCKETS Fig. 65 1. Follow pre-maintenance steps 2. With the side cover removed, locate the drive sprocket you need to replace (Fig. 64) 3. Remove hex bolts holding base cover plate to bottom frame with an 8mm socket or wrench (Fig.

  • Page 16: Drive Roller Gear

    PART REPLACEMENT THERMAL OVERLOAD 1. Follow pre-maintenance steps 2. With the side cover removed, locate the thermal overload switch 3. Thermal overload switch is located below the contactor (Fig. 72) 4. Remove the thermal overload by loosening the screws on the contactor holding the thermal overload in place.

  • Page 17: Wiring Diagram

    WIRING DIAGRAM...

  • Page 18: Parts Diagram

    PARTS DIAGRAM 378DSC67 378DSC78...
  • Page 19 PARTS DIAGRAM Item # Description Part # Item # Description Part # Hex bolt - Belt roller M8 x 20mm long Sprocket - upper roller 348PDSURGEAR Gear - Belt roller, small Call manufacturer Snap ring - top roller 20mm diameter Gear - Belt roller, large Call manufacturer Spring - height assist...

  • Page 20: 378Dsf78

    PARTS DIAGRAM 378DSF78 378DSF94...
  • Page 21 PARTS DIAGRAM Item # Description Part # Item # Description Part # Hex bolt - belt roller M8 x 20mm long Spring - dough knife 348PDSUSPRNG Gear - belt roller, small Call manufacturer Bearing - upper roller 348PDS25BEAR Gear - belt roller, large Call manufacturer Bearing - upper roller 348PDS25BEAR...

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