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Hoshizaki F-300BAF service manual F. Removal and Replacement of Evaporator Assembly Components

Models: F-300BAF

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F. Removal and Replacement of Evaporator Assembly Components

CAUTION

Make sure that the saftey switch and spout are properly installed after making repairs in the evaporator assembly. Failure to install the safety switch and spout correctly could result in serious damage to the unit.

Safety Bracket A

Safety Switch

Safety Bracket B

Spout

Drip Bracket

Channel

Auger

Channel

Drip Bracket

Spring Retainer

Mechanical Seal

O-Ring

Barrier

Gear Motor

Safety Switch Assembly

Safety Bracket A

Safety Bracket B

Spout

Drip Bracket

Cutter

Extruding Head

Upper Bearing

Evaporator

Allen Head Cap Screw

Allen Head Cap Screw with Washer

Housing-Lower Bearing

Coupling-Spline

Fig. 1

Page 38

Image 38

Hoshizaki F-300BAF service manual F. Removal and Replacement of Evaporator Assembly Components

Contents

Self-Contained Flaker Model F-300BAF SERVICE MANUAL Number Issued Revised“A Superior Degree of Reliability” HoshizakiHoshizaki America, IncPage CONTENTS 1. Upper Bearing Wear Check I. Specifications A. Icemaker 1. F-300BAF1. F-300BAF II. General Information A. ConstructionThe switch actuator is located in the ice storage bin Bin Control Spout Evaporator Gear Motor CompressorB. Ice Making Unit 1. F-300BAF C. Control Box Layoutb Auxiliary Code K-2 and L-0 a Auxiliary Code K-1 and Earlierc Auxiliary Code L-1 and M-0 d Auxiliary Code M-1 and LaterD. Timer Board 1. Solid-State Timer Board Control1. Startup E. Sequence of OperationF. Ice Production Check 2. Fill Cycle1. Startup F-300BAF, F-500BAF Sequence Flow Chart and Component OperationComponents Energized when the Flush Switch is in the FLUSH Position 2. Shutdown & RestartIII. Technical Information A. Water Circuit and Refrigeration Circuit F-300BAFB. Wiring Diagram 1. Auxiliary Code K-1 and Earlier2. Auxiliary Code K-2 and L-0 F-300BAF3. Auxiliary Code L-1 and M-0 F-300BAF4. Auxiliary Code M-1 and Later F-300BAFC. Sequence of Electrical Circuit 1. Fill Cycle2. Ice Purge Cycle When reservoir has filled, gear motor starts F-300BAF3. Freeze Cycle F-300BAF4. Shutdown F-300BAF5. Cleaning - Flush Switch F-300BAF6. Low Water Safety F-300BAF7. Spout Safety Switch F-300BAF8. High Pressure Switch In case of high pressure, pressure switch shuts down unit F-300BAFD. Performance Data 1. F-300BAFIV. Service Diagnosis A. Diagnostic Procedure Page Problem B. Diagnostic Charts1. No Ice Production Possible CauseRemedy ProblemPossible Cause Problem 2. Low Ice ProductionProblem Possible CausePossible Cause 3. OtherProblem Remedy1. Refrigerant Recovery V. Removal and Replacement of ComponentsA. Service for Refrigerant Lines 2. Evacuation and Recharge R-404AB. Brazing C. Removal and Replacement of Compressor D. Removal and Replacement of Drier E. Removal and Replacement of Expansion Valve12 Replace the panels in their correct positions 8 Check for leaks using nitrogen gas 140 PSIG and soap bubbles11 Place the expansion valve cover in position 13 Plug the unit back inF. Removal and Replacement of Evaporator Assembly Components 2. Removal and Replacement of Cutter 1. Upper Bearing Wear Check5. Removal and Replacement of Evaporator 3. Removal and Replacement of Extruding Head4. Removal and Replacement of Auger 6. Removal and Replacement of Mechanical Seal and Lower Housing 6a. Mechanical Seal6b. Lower Housing 7. Removal and Replacement of Gear MotorI. Removal and Replacement of Flush Water Valve G. Removal and Replacement of Fan MotorH. Removal and Replacement of Inlet Water Valve 8 Connect the hose to the water valve and secure it with the clamp 12 Move the flush switch to the ICE position 13 Check for water leaks15 Move the flush switch to the ICE position 9 Pour water into the reservoir, and check for water leaks1. Cleaning Solution VI. Cleaning and MaintenanceA. Cleaning and Sanitizing Instructions 2. Cleaning ProcedureSpout A Spout A Packing 3. Sanitizing SolutionEvaporator Assembly Bracket 4. Sanitizing Procedure - Initial5. Sanitizing Procedure - Final Snap Pin21 Flush out any solution from the storage bin 18 Move the flush switch to the ICE position and run the icemaker19 Turn off the power supply after 30 minutes 22 Turn on the power supply and start the automatic icemaking process2 Storage Bin and Scoop B. Maintenance1 Stainless Steel Exterior 3 Air FilterC. Preparing the Icemaker for Long Storage