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Stoelting U421 series Operator's Manual

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Download this manual See also: Owner's Manual
Model U421 & U431
Operator's Manual
513713 Rev.0

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Summary of Contents for Stoelting U421 series

  • Page 1 Model U421 & U431 Operator’s Manual 513713 Rev.0...

  • Page 2: Section 1: Introduction

    DO NOT ATTEMPT to operate the machine until instructions and safety precautions in this manual are read completely and are thoroughly understood. If problems develop or questions arise in connection with installation, operation, or ser- vicing of the machine, contact Stoelting. Stoelting Foodservice Equipment...
  • Page 3 Section 1: Introduction This manual is divided into the following fi ve sections: INTRODUCTION A. Parts of the Machine B. Specifi cations OPERATION A. Empty the Freezing Cylinders - Start here if cleaning a machine with mix in it B. Disassemble Parts - Start here if cleaning an empty machine C.
  • Page 4 Section 1: Introduction A. Parts of the U421-I2A Machine IntelliTec2™ Spigot Handle Front Door Swing Gate Style Handles Freezing Cylinder Cabinet IntelliTec2™ Touchpad The U421 has two types of spigot handles, swing gate and pull-down. The swing gate style is opened by moving the handle to the left.
  • Page 5 Section 1: Introduction B. U421-I2A Specifi cations U41-I2A A/C U421-I2A A/C Remote U421-I2A W/C Dimensions Machine with crate Machine with crate Machine with crate 26-3/4’’ 34’’ 26-3/4’’ 34’’ 26-3/4’’ 34’’ width (67,9 cm) (86,4 cm) (67,9 cm) (86,4 cm) (67,9 cm) (86,4 cm) 68-3/4’’...
  • Page 6 Section 1: Introduction C. Parts of the U431-I2A Machine Spigot Handle IntelliTec2™ Front Door Swing Gate Style Handles Freezing Cylinder Cabinet IntelliTec2™ Touchpad The U431 has two types of spigot handles, swing gate and pull-down. The swing gate style is opened by moving the handle to the left.
  • Page 7 Section 1: Introduction D. U431-I2A Specifi cations U431-I2 A/C U431-I2 A/C Remote U431-I2 W/C Dimensions Machine with crate Machine with crate Machine with crate 26-3/4'' 34'' 26-3/4'' 34'' 26-3/4'' 34'' width (67,9 cm) (86,4 cm) (67,9 cm) (86,4 cm) (67,9 cm) (86,4 cm) 68-3/4'' 78''...

  • Page 8: Section 2: Operation

    Section 2: Operation NOTE machine must emptied, Set up cab and hoses for rinse procedure. disassembled, cleaned sanitized 1. Remove the bags from the cab every 3 days or per local health code and store them in a cooler. requirements (whichever is sooner). 2.
  • Page 9 Section 2: Operation Press and hold the Main Open spigots to drain product Freezer Power button for until no product is visible through three seconds to turn off the front door. Refi ll the bucket the power. with water as necessary. B.

  • Page 10: Front Door Disassembly

    Section 2: Operation 1. Front Door Disassembly 2. Removing Auger Remove front auger Remove the spigot supports and bushings extensions or rosette and remove the augers caps if installed. from the freezing cylinders. As the augers are being Unscrew the knobs pulled out, remove the on the front door and plastic fl...

  • Page 11: Cleaning Disassembled Parts

    Section 2: Operation C. Cleaning Disassembled Parts D. Cleaning the Machine Disassembled parts require complete cleaning, Using a detergent solution sanitizing and air drying before assembling. Local large barrel and state health codes will dictate the procedure brush provided, clean required.

  • Page 12: Assembling Machine

    Use lubricants only in accordance with the manufacturer’s instructions. NOTE Stoelting recommends allowing the parts to air dry before assembling. Install the rear seal o-rings onto the augers. Lubricate the outside of the o-rings with a generous amount of sanitary lubricant.
  • Page 13 Section 2: Operation Screw the springs onto Apply a thin layer of Total Blend lubricant to the inside the studs in the plastic and outside of the auger support bushing. fl ights. The springs must screwed into fl ights completely to provide proper compression.
  • Page 14 Section 2: Operation E.11 Assemble the air bleed valve o-ring onto the air bleed Install the o-rings onto the spigot bodies and apply a valve. Position the o-ring into the groove. Apply a thin thin layer of Total Blend lubricant to the o-rings . Install fi...
  • Page 15 Section 2: Operation F. Sanitizing E.13 Place the front door a s s e m b l y t h e Sanitizing must be done after the machine is clean and mounting studs and the just before the machine is fi lled with mix. Sanitizing push front door against the night before does not ensure sanitization the next the machine carefully.
  • Page 16 Section 2: Operation Prepare 2 gallons of sanitizing solution for each freezing After you hear the pump cylinder. Following the sanitizer shut off, press the air manufacturer’s instructions for bleed valves to release preparing the sanitizing solution. the air pressure. Allow water to fi...
  • Page 17 Section 2: Operation G. Freeze Down After the fi ve minute timer expires, open the spigots to drain the Make sure the display shows the freezing cylinders sanitizing solution into a container. are off . If they are not, press the On/Off Left or On/Off Right button to turn them off...
  • Page 18 Section 2: Operation Push as much air out of Place a container under the the bag as possible and spigot and open the spigot connect the bag adapter to allow the mix to fl ush out to the bag. Make sure the about 8 ounces (0.23 liters) of adapter is fully inserted sanitizing solution and liquid...
  • Page 19 Section 2: Operation H. Brushes for Cleaning 208387 208467 208465 208485 208135 208380 Part Number Where Used 208135 Freezing cylinder 208465 Front door, check valve block, pump hose 208380 Front door, pump hose, mix sensor 208467 Front door, manifold, check valve block 208485 Coiled hose 208387...

  • Page 20: Lubrication Points

    Section 2: Operation I. Lubrication Points O-Ring O-Ring & Hex End of Auger Inside & Outside of Bushing ONLY Inside Metal Adapter All O-Rings* * U431 spigot bodies shown, U421 has only one spigot U421-I2A & U431-I2A OPERATOR’S MANUAL 513713 REV.0...
  • Page 21 Section 2: Operation J. Pump Hose Routing 1/2" Clear Tube 1/2" Clear Tube Black Cover Clamp Black Cover Clamp Coiled Hose Coiled Hose Mix Sensor Mix Sensor Bag Adapter Bag Adapter Check Valve Block Check Valve Block Bag Adapter Cap Bag Adapter Cap Collection Manifold Collection Manifold...

  • Page 22: Section 3: Maintenance

    Section 3: Maintenance A. Mix Pump Hose Replacement NOTE Replace pump hose every 800 gallons or Loosen the clamps on the tan hose at the mix sensor and check every 2 weeks, whichever occurs fi rst. valve block. Replace the hose during the cleaning Disconnect the hose at both process.
  • Page 23 Section 3: Maintenance Press and hold the Pump buttons until the pump hose reset message appears on Connect a new length of tan hose the screen. to the mix sensor using a clamp. A.10 Continue normal cleaning and sanitizing procedures. Turn the pump on and feed the other end of the tan hose into the left side of the black cover.
  • Page 24 Section 3: Maintenance B. Mix Pump Hose Cleaning 1. Disassembly and Coiled Hose Cleaning NOTE Any cleaning procedure must always be Remove the three drawers from the cab. To remove a followed by sanitizing before fi lling the drawer, pull it out. Tilt the drawer up to disengage the machine with mix.
  • Page 25 Section 3: Maintenance Loosen the clamp on the mix tube at the top of the cab and remove the hose from the tube. Disconnect the wires from the low mix sensor. Remove the two o-rings from the base of the check valve block. Turn the pump on and pull down on the pickup end of the tan hose until a few inches of tubing...
  • Page 26 Section 3: Maintenance B.13 B.17 Wash the mix tube and the check valve base in the cabinet with the Turn the pump on and feed the detergent water and brushes. tan hose into the left side of the Rinse with clean, 90° to 110°F black cover clamp.
  • Page 27 Section 3: Maintenance B.20 B.22 Connect the clear hose to the top of the check valve Connect the tan hose to the bottom of the check block and tighten the clamp. valve block. The bottom of the block has the smaller hose connector.

  • Page 28: Fine Consistency Adjustment

    Section 3: Maintenance C. Fine Consistency Adjustment Press the SET button to save the changes. Press the SEL button to toggle between freezing Product consistency can be adjusted on the Fine cylinders. Consistency Adjustment Screen. Press the left arrow button when done to return to the From the Current Current Status screen.

  • Page 29: Daily Procedures

    Section 3: Maintenance Daily Procedures D. Daily Procedures - Night E. Daily Procedures - Morning Clean the underside of the clear front door and the Remove the drip tray from exposed portion of the spigots with brushes and a the front panel. Clean the mild detergent water and then with sanitizing solution.

  • Page 30: Section 4: Troubleshooting

    Soft Firm Decrease the fine consistency. Increase the fine consistency. Contact your authorized Is the product still Stoelting distributor for too firm? further assistance Continue normal operation. Is there an air flow Is the product still restriction around too Soft?
  • Page 31 Section 4: Troubleshooting If an error code appears on the machine complete the steps on the following pages before calling your authorized Stoelting distributor. Oftentimes the issues can be resolved using new/fresh product in a clean and sanitized machine. Any Error Code on IntelliTec2™...
  • Page 32 • Improper adjustments to the IntelliTec2™ control. Is there liquid product in the freezing cylinder? Contact your authorized Stoelting Allow product to thaw, then distributor for further assistance disassemble and check condition of the parts. Replace as necessary...
  • Page 33 Does the error and reassemble Is the problem occur after the first following the steps in the fixed? freezing cycle? operators manual. Contact your authorized Stoelting distributor for Continue normal operation. further assistance 513713 REV.0 U421-I2A & U431-I2A OPERATOR’S MANUAL...
  • Page 34 Does the error and reassemble Is the problem occur after the first following the steps in the fixed? freezing cycle? operators manual. Continue normal operation. Contact your authorized Stoelting distributor for further assistance U421-I2A & U431-I2A OPERATOR’S MANUAL 513713 REV.0...
  • Page 35 • Hot Dog Steamer Move equipment that Is there an increases the ambient Is the problem exterior heat temperature away from fixed? source? the machine. Contact your authorized Stoelting distributor for Continue normal operation. further assistance 513713 REV.0 U421-I2A & U431-I2A OPERATOR’S MANUAL...
  • Page 36 Turn the system on. fixed? turned off? Are the water or Repair or replace the Is the problem glycol lines kinked lines. fixed? or damaged? Contact your authorized Stoelting distributor for Continue normal operation. further assistance U421-I2A & U431-I2A OPERATOR’S MANUAL 513713 REV.0...

  • Page 37: Section 5: Replacement Parts

    Section 5: Replacement Parts Cab Tubing 756088 756088 2206611 2206611 264235 264235 624644 624644 264241 264241 2208043 2208043 234235 234235 756236 756236 624619 624619 264235 264235 2208137 2208137 2208193 2208193 762256 762256 694247 694247 2208169 2208169 232024 232024 264235 264235 232025 232025 756204...
  • Page 38 Section 5: Replacement Parts U421-I2A Auger Shaft & Front Door Parts 667868 667868 381804 381804 624678 624678 2183106 2183106 624520 624520 694255 694255 2187696 2187696 149003 149003 694200 694200 1151859 1151859 4151178 4151178 2104552 2104552 482004 482004 625133 625133 482019 482019 2204252 2204252...
  • Page 39 Section 5: Replacement Parts U431-I2A Auger Shaft & Front Door Parts 381804 381804 624678 624678 2110116 2110116 694255 694255 624520 624520 2104552 2104552 482004 482004 667868 667868 149003 149003 1151859 1151859 4151178 4151178 694200 694200 2177427 2177427 2187811 2187811 482019 482019 625133 625133...
  • Page 40 U421-I2A & U431-I2A OPERATOR’S MANUAL 513713 REV.0...
  • Page 41 513713 REV.0 U421-I2A & U431-I2A OPERATOR’S MANUAL...
  • Page 42 U421-I2A & U431-I2A OPERATOR’S MANUAL 513713 REV.0...
  • Page 43 PURPOSE. 3. Remedies: Stoelting’s sole obligations, and Buyer’s sole remedies, for any breach of this warranty shall be the repair or (at Stoelting’s option) replacement of the affected component at Stoelting’s plant in Kiel, Wisconsin, or (again, at Stoelting’s option) refund of the purchase price of the affected equipment, and, during the first twelve (12) months of the warranty period, deinstallation/reinstallation of the affected component from/into the equipment.

This manual is also suitable for:

U431-i2 w/cU431 seriesU431-i2 a/cU431-i2 a/c remote

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