Hoshizaki DCM 300BAH(-OS) service manual 5b. Lower Housing

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5. Removal and Replacement of Mechanical Seal and Lower Housing

5a. Mechanical Seal

1)Move the control switch to the "DRAIN" position and drain all of the water from the evaporator.

2)After the water has stopped draining, move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF" position.

3)Remove the front cover of the storage bin. Remove spout B, then remove spout A. See Fig. 2.

4)Remove the apron panel, then remove the left side panel.

5)Remove the extruding head heater and the allen head cap screws securing the extruding head.

6)Using the cutter, lift out the auger assembly, then remove the evaporator bracket.

7)The mechanical seal consists of two parts. One moves along with the auger, and the other is fixed on the lower housing. NOTICE! If the contact surfaces of these two parts are worn, cracked, or scratched, the mechanical seal may cause water leaks and should be replaced.

8)Remove the allen head cap screws securing the evaporator to the lower housing.

9)Raise the evaporator up to access the lower housing.

10)Remove the mechanical seal from the housing. If only replacing the mechanical seal, proceed to step 13. NOTICE! To help prevent water leaks, be careful not to damage the surfaces of the O‑ring or mechanical seal.

5b. Lower Housing

11)Remove the O-ring and the bolts securing the housing to the gear motor and remove the housing from the gear motor. If inspection of the upper bearing inside the extruding head (see "V.D.1. Upper Bearing Wear Check") indicates that it is out of tolerance, replace both it and the bearing inside the lower housing.

Note: Replacing the bearing requires a bearing press adaptor. If one is not available, replace the whole extruding head and housing.

12)Install the O-ring and mount the lower housing on the gear motor.

13)Install the lower part of the mechanical seal on the lower housing.

14)Lower the evaporator down and secure it to the lower housing.

15)Install the auger assembly with the upper part of the mechanical seal attached.

16)Replace the evaporator bracket in its correct position.

17)Replace spout A, spout B, and the front cover of the storage bin in their correct positions.

18)Move the power switch to the "ON" position, then replace the panels in their correct positions.

19)Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process.

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Contents DCM-300BAH-OS Hoshizaki AMERICA, INC Contents Page Important Safety Information Page DCM-300BAH-OS Specifications IcemakerIcemaker II. General Information ConstructionIcemaking Unit Sequence Cycles and Shutdown Sequence of OperationCycle Steps Sequence Flow ChartShutdown & Restart 12-Hr. Drain CycleControl Board DCM-PB Push Button Model Control Board Control Board LayoutControl Board DCM-OS Opti-Serve Model Control Board K5 ConnectorPower Switch, Control Switch, and Dispense Mode Switch Power SwitchLED Lights and Components Dispense Mode Switch Control SwitchPage Wiring Diagrams DCM-300BAH-OS Performance Data IV. Service Diagnosis Diagnostic ProcedureIce Production Check Page Page Page Page 5VDC Output Checks Control Board CheckPage Opti-Serve Model ICE and AM LEDs are on K5 Pin #7 R wire Page Bin Control Check Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning No Ice Production Diagnostic ChartsStartup Fill CycleShutdown Ice Purge CycleIce Dispense Push Button Ice/Water DispenseIce Dispense Opti-Serve Water Dispense Push Button3a. Ice Dispense Continuous Opti-Serve OS Sensors3b. Ice Dispense Portion 3c. Water DispenseService for Refrigerant Lines Removal and Replacement of ComponentsRefrigerant Recovery BrazingEvacuation and Recharge R-404A Important Notes for Component Replacement Evaporator Assembly Upper Bearing Wear Check Removal and Replacement of Extruding HeadRemoval and Replacement of Evaporator Removal and Replacement of AugerPage 5b. Lower Housing Removal and Replacement of Gear Motor Dispense or Agitating Motor Dispense Auger and AgitatorVI. Cleaning and Maintenance Water System Cleaning and Sanitizing InstructionsSanitizing Solution Dispense Components Cleaning and Sanitizing ProcedureWater Dispense Nozzle Ice Dispense Spout Spout Cover Maintenance Maintenance ScheduleFrequency Area Task Preparing the Icemaker for Periods of Non-Use VII. Disposal

DCM 300BAH(-OS) specifications

The Hoshizaki DCM 300BAH(-OS) is a high-performance ice and water dispenser designed to meet the demands of various commercial environments. Known for its reliability and efficiency, this machine is widely used in restaurants, hotels, and catering services where a continuous supply of ice is essential.

One of the standout features of the DCM 300BAH(-OS) is its ability to produce crescent-shaped ice, which is favored in many settings for its hardness and slow-melting properties. This type of ice helps maintain the temperature of beverages longer without diluting them too quickly, making it ideal for mixed drinks and soft drinks alike.

Technology-wise, the Hoshizaki DCM 300BAH(-OS) integrates advanced refrigeration components that enhance energy efficiency. The machine is designed with a patented cooling system that reduces energy consumption while maintaining optimal ice production. Moreover, it is equipped with a highly efficient compressor that ensures quick recovery times even during peak usage.

One characteristic that sets this model apart is its space-saving design. With a footprint that allows for easy placement in tight quarters, it is particularly suited for establishments with limited counter space. The sleek and contemporary exterior also means it complements a variety of decor styles, making it a versatile addition to any commercial kitchen or bar.

The unit boasts a user-friendly interface, with easy-to-read indicators for ice and water levels, allowing staff to manage operations seamlessly. Additionally, the DCM 300BAH(-OS) features a self-cleaning cycle, which automates the sanitation process to ensure the utmost hygiene standards are maintained. This feature not only saves time but also enhances the longevity of the unit by reducing wear and tear.

Its durable construction is another strong point. Built from high-quality stainless steel, the DCM 300BAH(-OS) is resistant to corrosion and wear, ensuring it can withstand the rigors of daily use. Furthermore, Hoshizaki products are renowned for their reliability, and this model upholds that reputation, providing consistent performance with minimal downtime.

In summary, the Hoshizaki DCM 300BAH(-OS) stands out for its efficient ice production, innovative technology, space-saving design, user-friendly features, and robust durability, making it an ideal choice for any business that requires a reliable ice and water dispensing solution.
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