Hoshizaki HR24A service manual Cool Down Restart, EvapFM and Defrost icons are on

Page 11

4. Cool Down Restart

EvapFM and Comp icons are on. CTh warms to 4°F above setpoint. Comp icon turns on and Comp energizes. 3-min. Comp run timer starts.

5. Defrost Initiation

EvapFM and Defrost icons are on.

a)Automatic Defrost Initiation: EvapFM and Defrost icons are on. EvapFM continues. 6-hr. DT terminates. 30‑min. DT starts. If Comp run time < 3 min., Comp icon and Comp continue until 3-min. Comp run timer terminates. Once 3-min. Comp run timer terminates, Comp icon turns off, Comp de-energizes, and defrost starts.

b)Manual Defrost Initiation: EvapFM and Defrost icons are on. To initiate a manual defrost, press and hold the "+" button until the defrost icon turns on. EvapFM continues. 30‑min. DT starts. If Comp run time < 3 min., Comp icon and Comp continue until 3-min. Comp run timer terminates. Once 3-min. Comp run timer terminates, Comp icon turns off, Comp de‑energizes, and 30-min. DT starts.

Note: If the display module panel is locked, press and hold the "-" button and the power button until "UnL" appears briefly on the display module.

6. Defrost Termination

Comp icon is on. EvapFM icon flashing. 30-min. DT terminates. 6-hr. DT starts. Comp icon turns on and Comp energizes. 3-min. Comp run timer starts. 2-min. EvapFM timer starts, EvapFM icon starts flashing, and EvapFM de-energizes. When 2-min. EvapFM timer terminates, EvapFM icon turns steady and EvapFM energizes.

7. Energy Saving Mode

ESM initiates during periods of inactivity. Once CTh cools to setpoint, 20-min. ESM timer starts. DS must remain engaged without activation (door open) for 20 min. after CTh has achieved setpoint for ESM to initiate. Once 20-min. ESM timer terminates, EvapFM operates on ESM cycle. See "EvapFM ESM Cycle" below.

Note: If DS is activated (door open) before 20-min. ESM timer terminates, ESM timer resets and 20-min. ESM timer re-starts once CTh cools to setpoint again.

EvapFM ESM Cycle:

•If Comp is de-energized when 20-min. ESM timer terminates, EvapFM de-energizes.

•If Comp is energized when 20-min. ESM timer terminates, EvapFM continues and cycles off with Comp.

•During ESM Comp off time, EvapFM operation is 1 min. on and 5 min. off. EvapFM operates on and off with Comp.

Legend: CB–control board; Comp–compressor; CTh–cabinet thermistor; CT–cabinet temperature; DM–display module; DS–door switch; DT–defrost timer; ESM–energy saving mode; EvapFM–evaporator fan motor

11

Page 10 Page 12
Image 11
Page 10 Page 12
Contents HR24A Hoshizaki AMERICA, INC Contents Page Important Safety Information Page Storage Capacity Specifications Electrical and Refrigerant DataStorage Capacity and Dimensions Unit mm DimensionsHR24A II. General Information ConstructionSequence Cycles and Shutdown Sequence of OperationEvapFM and Defrost icons are on Cool Down RestartSequence Flow Chart HR24A Sequence Flow ChartControl Board and Display Module Display Module Layout Control Board LayoutDefault Settings Cabinet TemperatureControl Panel Lockout Display Module IconsHigh and Low Temperature Alarm Values AH or AL Alarm SafetiesService Menu Access Service MenuService Menu Chart Page AL alarm sensor. Do not adjust Fan operation with door closed 247 Address not used Baud Rate not used Parity not used III. Technical Data Refrigeration Circuit Wiring Diagram Diagnostic Procedure IV. Service DiagnosisPage Energy Saving Mode Defrost Control Board CheckStartup and Cool Down Thermistor Check Appliance Not Cooling Diagnostic ChartDefrost Fails to Start or Terminate Evaporator is Frozen UpRefrigerant Recovery Replacement of ComponentsService for Refrigerant Lines Evacuation and Recharge R-134a BrazingImportant Notes for Component Replacement Door Reversal Maintenance CleaningVII. Preparing the Appliance for Periods of Non-Use VIII. Disposal
Related manuals
Manual 20 pages 19.87 Kb

HR24A specifications

The Hoshizaki HR24A is an advanced refrigeration unit designed to meet the cooling needs of commercial kitchens and food storage facilities. Known for its reliability and efficiency, this model showcases several innovative features that set it apart in the competitive market of commercial refrigeration.

One of the standout characteristics of the Hoshizaki HR24A is its robust construction. Built with a durable stainless steel exterior, it not only adds aesthetic appeal but also ensures longevity and resistance to corrosion and wear. The interior is designed for easy cleaning, with rounded corners that minimize the buildup of grime and food particles.

The HR24A offers an impressive storage capacity, making it ideal for establishments with high-volume food storage requirements. With a temperature range typically between 33°F and 38°F, the unit maintains optimal conditions for preserving perishables such as meats, dairy, and vegetables. This precision in temperature control is essential for maintaining food safety and quality.

One of the key technologies integrated into the Hoshizaki HR24A is its advanced refrigeration system. Utilizing a highly efficient compressor and a fan-assisted cooling feature, the unit ensures rapid temperature recovery even in busy kitchen environments. This is crucial during peak hours when door openings are frequent, as it helps maintain consistent internal temperatures.

Energy efficiency is another hallmark of the HR24A. It is designed with environmentally friendly refrigerants and complies with Energy Star standards, which can lead to significant cost savings over time through reduced electricity consumption. This commitment to environmental responsibility makes it an attractive option for eco-conscious businesses.

In terms of user-friendliness, the HR24A is equipped with digital controls and adjustable shelving, allowing for customized organization according to specific storage needs. The LED lighting inside the unit provides excellent visibility, making it easy to locate items quickly, which is particularly beneficial during busy service periods.

Overall, the Hoshizaki HR24A combines durability, efficiency, and functionality, making it an exceptional choice for anyone seeking a reliable refrigeration solution in a commercial kitchen setting. Whether used in restaurants, hotels, or catering businesses, its impressive features and state-of-the-art technology continue to meet the demanding requirements of the foodservice industry.
Top Page Image Contents