problem occurs. At startup a 5 second delay occurs while the board conducts an internal timer check. A short beep occurs when the power switch is turned ON or OFF.

The green LED’s 1-4 represent the corresponding relays and energize and sequence 5 seconds from initial startup as follows:

Sequence Step

LED’s on Length: Min.

Max.

Avg.

1 Minute Fill Cycle

LED4

 

 

60 sec.

Harvest Cycle

LED1, 4, & 2

2 min.

20 min.

3-5 min.

Freeze Cycle

LED1

5 min.

60 min.

30-35 min.

Reverse Pump Out

LED1, 3, & 2

10 sec.

20 sec.

Factory set.

{LED 1 – Comp; LED 2 - HGV/CFM;

LED 3 – PM;

LED 4 - WV}

 

The built in safeties shut down the unit and have alarms as follows:

1 beep every 3 sec. = High Evaporator Temperature >127 ° F.

Check for defrost problem (stuck HGV or relay), hot water entering unit, stuck headmas- ter, or shorted thermistor.

2 beeps every 3 sec. = Defrost Back Up Timer. Defrost >20 minutes. Orange LED marked 20 MIN energizes.

Check for open thermistor, HGV not opening, TXV leaking by, low charge, or inefficient compressor.

3 beeps every 3 sec. = Freeze Back Up Timer. Freeze > 60 minutes. Yellow LED marked 60 MIN energizes.

Check for F/S stuck closed (up), WV leaking by, HGV leaking by, TXV not feeding prop- erly, low charge, or inefficient compressor.

To manually reset the above safeties, depress white alarm reset button with the power supply ON.

6 beeps every 3 sec. = Low Voltage. Voltage is 92 Vac or less.

7 beeps every 3 sec. = High Voltage. Control voltage > 147Vac ±5%. The red LED will de-energize if voltage protection operates.

The voltage safety automatically resets when voltage is corrected.

The Output Test switch “S3” provides a relay sequence test. With power OFF, place S3 ON and switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, & 4, normal sequence every 5 seconds. S3 should remain in the “OFF” position for normal operation.

The application switch located between relay X3 & X4 must be set to match the original board application. Place this switch in the ALP position if there is no white wire supplied

15

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Hoshizaki KM-630MAF, KM-630MWF, KM-630MRF service manual Minute Fill Cycle, Harvest Cycle, Freeze Cycle, Reverse Pump Out
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KM-630MRF, KM-630MWF, KM-630MAF specifications

The Hoshizaki KM-630MWF, KM-630MAF, and KM-630MRF are advanced commercial ice machines designed to meet the needs of various businesses, including restaurants, bars, and cafes. Renowned for their efficiency, durability, and performance, these models showcase Hoshizaki's dedication to innovation in the foodservice industry.

One of the primary features of the Hoshizaki KM-630 series is the production of crescent-shaped ice. This type of ice is not only aesthetically pleasing but also known for its slow melting properties, making it ideal for keeping beverages cold without diluting them quickly. With a production capacity of up to 617 pounds of ice per day, these machines are built to handle high-demand scenarios efficiently.

The KM-630MWF model is equipped with a water-cooled condenser, making it suitable for environments where air-cooled units might face challenges due to high ambient temperatures. In contrast, the KM-630MAF features an air-cooled condenser which is advantageous for businesses looking to reduce water usage. The KM-630MRF variant utilizes a remote-cooled option, offering flexibility in installation and reducing heat and noise in the kitchen areas.

All three models are built with superior quality stainless steel, ensuring durability and resistance to rust and corrosion. They are designed to be easy to clean, featuring a smooth surface that minimizes dirt and bacteria buildup. Furthermore, Hoshizaki incorporates their advanced EverCheck alert system, providing operators with real-time performance notifications and ensuring reliable operation.

Energy efficiency is a crucial characteristic of the KM-630 series. These machines are designed to comply with industry standards, significantly reducing energy consumption and operating costs. Their highly efficient refrigeration system not only enhances ice production but also extends the lifespan of the machine.

In terms of ease of use, Hoshizaki has designed the KM-630 series to feature a user-friendly control panel. This panel allows for straightforward monitoring and modification of operations, ensuring operators can manage the machine effectively.

Overall, the Hoshizaki KM-630MWF, KM-630MAF, and KM-630MRF ice machines represent a blend of advanced technology, energy efficiency, and robust construction, making them an ideal choice for businesses that demand high-quality ice production. With their innovative features, these machines are poised to elevate the service capabilities of any establishment.
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