B. Removal and Replacement of Compressor

IMPORTANT

Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.

Note: When replacing a compressor with a defective winding, be sure to install the new start capacitor and start relay supplied with the replacement compressor. Due to the ability of the POE oil in the compressor to absorb moisture quickly, the compressor must not be opened more than 15 minutes for replacement or service. Do not mix lubricants of different compressors even if both are charged with R‑404A, except when they use the same lubricant.

1)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.

2)Remove the apron panel, then remove the right side panel.

3)Disconnect the drip tray hose from the tee. Remove the four screws securing the drip tray, then remove the drip tray and hose.

4)Recover the refrigerant and store it in an approved container.

5)Remove the terminal cover on the compressor and disconnect the compressor wiring.

6)Remove the discharge, suction, and process pipes.

7)Remove the compressor hold-down bolts, washers, and rubber grommets.

8)Remove the compressor. Unpack the new compressor package.

9)Attach the rubber grommets of the prior compressor to the new compressor.

10)Place the compressor in position and secure it using the bolts and washers.

11)Remove the drier, then place the new drier in position.

12)Remove plugs from the suction, discharge, and process pipes.

13)Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.

14)Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). DO NOT use R-404A as a mixture with pressurized air for leak testing.

15)Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge.

16)Connect the terminals and replace the terminal cover in its correct position.

17)Replace the drip tray and drip tray hose in their correct positions. Secure the hose to the tee. Pour water into the drip tray and check for leaks.

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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Hoshizaki DCM-500BWH-OS service manual Removal and Replacement of Compressor
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DCM-500BWH-OS specifications

The Hoshizaki DCM-500BWH-OS, DCM-500BWH, DCM-500BAH, and DCM-500BAH-OS are advanced ice makers designed to meet the needs of busy commercial environments. Hoshizaki is a renowned manufacturer known for producing high-quality refrigeration and foodservice equipment, and their DCM series of ice makers exemplifies this commitment to excellence.

One of the main features of the DCM-500 series is its ability to produce a significant amount of ice, ideally suited for restaurants, bars, and hotels. With a production capacity of up to 500 pounds of nugget ice per day, these units provide an efficient solution for establishments that require a steady supply of ice.

The nugget ice produced by the DCM-500 series is not only soft and chewable but also retains the cold temperature longer, making it perfect for beverages. This appealing characteristic of nugget ice caters to growing customer preferences for premium ice options.

These models also incorporate advanced ice-making technology, ensuring consistent quality. The DCM-500BWH-OS and DCM-500BAH-OS variants feature a self-contained design that makes installation simple and efficient, providing enhanced portability that makes them versatile for different locations within a commercial space.

The DCM-500BWH and DCM-500BAH models are equipped with features like a built-in ice bin that allows for storage convenience. The ice bins have a substantial holding capacity, reducing the frequency of refills and improving overall operation efficiency.

Additionally, the DCM-500 series is designed with energy efficiency in mind. Integrated with modern refrigeration systems, these ice makers comply with energy-saving standards, helping to reduce operational costs. User-friendly controls allow for easy adjustment and monitoring, ensuring that operators can manage their ice production without hassle.

Moreover, the robust construction materials used in these models increase durability, making them suitable for high-demand environments. Features such as easy-to-clean surfaces and self-diagnostic systems further optimize maintenance, ensuring prolonged performance without significant downtime.

Overall, the Hoshizaki DCM-500BWH-OS, DCM-500BWH, DCM-500BAH, and DCM-500BAH-OS ice makers are excellent choices for businesses seeking reliable and high-capacity ice production. Their advanced features, energy efficiency, and user-friendly operation make them a valuable addition to any commercial kitchen or bar setup.
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