Conversion Instructions

1.Recover R-502 refrigerant from the ice machine in accordance with local and national governing laws.

2.Refer to “Equipment Modification Requirements” checklist on previous page.

3.Remove and replace liquid line filter drier. Use only Manitowoc approved OEM filter drier, P/N 8930233. NOTE: compressor oil does not require changing.

4.Evacuate the ice machine. IMPORTANT: remote models require a 4-point hose hookup to evacuate properly (refer to service manual or service bulletin, SB-18-84, for proper evacuation procedure).

5.Charge ice machine with R-402B refrigerant. System charge is identical to R-502 charge listed on model/serial number tag. NOTE: charge with liquid only into the high side of the ice machine using weigh-in method or “Dial-A-Charge” (refer to service manual or service bulletin, SB-18-84, for proper charging procedure).

6.Remove purple R-502 label near service valves. Do not remove model and serial number tags!

7.Attach an R-402B conversion label, P/N 8134423, to each of the two locations:

A.Next to the serial number plate.

B.Next to the service valves.

IMPORTANT: write service company name and conversion date on each label.

8.Restart ice machine and verify it operates properly (refer to service manual, if necessary). Water-cooled models maintain head pressure at the same R-502 setting.

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GR-0490N, GR-0400A, GR-0401W specifications

Manitowoc Ice continues to set the standard in commercial ice maker technology with its innovative models, GR-0401W, GR-0400A, and GR-0490N. These ice makers are designed for restaurants, bars, and other commercial establishments seeking reliable, efficient ice production.

The GR-0401W is a stellar representative of Manitowoc's ice-making prowess. With a production capacity of up to 450 pounds of ice per day, it ensures that high-volume demands are easily met. This unit's compact design allows for fitting into tight spaces without sacrificing performance. One standout feature is the Smart Design technology, which significantly reduces service time and improves accessibility for maintenance. Additionally, it comes equipped with a built-in antimicrobial protection system, reducing the potential for contamination and ensuring that every batch of ice meets health and safety standards.

On the other hand, the GR-0400A is recognized for its advanced ice-making capabilities, producing up to 400 pounds of cube-style ice per day. Its intuitive control system allows operators to easily adjust settings and track production, facilitating seamless operation. The efficient air-cooled system maximizes energy efficiency, which results in lower utility bills. The GR-0400A is built with reliability in mind, featuring stainless steel components that enhance durability while also being easy to clean—ideal for busy environments where time is of the essence.

Lastly, the GR-0490N model caters to those who require compact yet robust ice production. Capable of producing around 490 pounds of ice daily, it integrates advanced engineering that enhances its energy efficiency and performance. Its sleek design allows it to fit under most counters, making it perfect for establishments with limited space. The innovative environment-friendly refrigerant used in the GR-0490N not only complies with industry regulations but also contributes to lower operational costs.

In summary, Manitowoc Ice models GR-0401W, GR-0400A, and GR-0490N exemplify cutting-edge ice-making technology, delivering high output, exceptional durability, and energy efficiency. Ideal for various commercial applications, these units cater to the growing demands of the food service industry while ensuring quality and safety in every cube produced. These machines truly elevate the standard of ice-making solutions available on the market today.