Pumpdown / Defrost

Service Mode

A single pole, single throw switch (SPST) is supplied in

each condensing unit for shutting off the system. Closing the “SERVICE” switch in the condensing unit will cause the system to pumpdown and shut off. “Ser” will be displayed on the Beacon board LED and “SERVIC”

is displayed on the Smart Controller LCD display. The evaporator fan and heaters will be de-energized in the Service Mode.

The system will not restart until the SPST switch is placed in the “NORMAL” or “OFF” position.

A remote “SERVICE” switch can be added to the Beacon II board across the “Ser” and “C” connections of the terminal block. It will operate in the same manner as the switch above.

The system can be pumped down by pressing the “SERVICE” button twice. To restart the system, press the “CLEAR” button.

The system can be pumpdown for service by closing the liquid line service valve in the condensing unit, then closing the suction line service valve when the system trips on the low pressure switch.

In order for air defrost evaporator fan motors to cycle off during “SERVICE” mode, the fan motors must be wired through the fan relay on the Beacon II board.

Defrost

Defrost Timing

When power is first applied to the system, its timer starts counting time. If 4 defrost are programmed, it will initiate a defrost every 6 hours from when power was first applied. Beacon II does not have a real time clock. Beacon II does provide the ability to delay the starting of the first defrost.

Defrost Delay Start Time

Example: The system is first powered up at 8:00 AM and is programmed for 4 defrost per day. The user would like

the first defrost at 10:00 AM. To accomplish this, use the “PROGRAM REVIEW” button to scroll to dFS. Use the “SELECTOR” switch to select 2 hours delay start, then press “ENTER.” The 1st defrost will now occur at 10:00 AM and then a defrost will occur every 6 hours thereafter.

Time Remaining Until Next Defrost

(On Version 1.8 Boards)

To find out how much time is left until the next defrost is scheduled, use the “MONITOR” button to scroll to dFS. The time displayed will be how much time until the next

scheduled defrost.

Defrost Schedule In Memory

Beacon II does not have a real time clock but it keeps track of the time that has elapsed in its memory. It also keeps in memory the number of defrosts scheduled and how much time has elapsed between defrosts. If a power failure occurs, when power is restored Beacon

IIremembers how many defrosts are scheduled and it remembers how much time was left until the next defrost. It will then defrost based on this timing. So, if the power failure lasted 15 minutes, the defrost schedule will be off by 15 minutes.

Resetting Defrost Schedule

When a power interruption causes a severe lag in the defrost schedule, the defrost schedule can be reset in the following manner. First, press the reset time button on the board to zero out the internal counters. Then, program the appropriate defrost delay start time for the next desired defrost period. The defrost schedule will be

correct until you have another power outage.

H-IM-79E specifications

Heatcraft Refrigeration Products has long been a leader in eco-friendly and efficient cooling solutions, and the H-IM-79E is a prime example of their commitment to innovation and sustainability. Designed for commercial use, the H-IM-79E is a high-performance refrigeration unit ideal for supermarkets, convenience stores, and restaurants, where reliable temperature control is essential.

One of the standout features of the H-IM-79E is its energy efficiency. This unit employs advanced compressor technology that optimizes power consumption without sacrificing cooling performance. In addition, it is designed to minimize operational costs, making it an attractive option for businesses looking to reduce their energy bills while maintaining high standards of refrigeration.

The H-IM-79E integrates a robust refrigerant management system that uses environmentally friendly refrigerants, aligning with Heatcraft's commitment to reducing the carbon footprint of their products. This not only helps businesses comply with environmental regulations but also promotes a healthier planet for future generations.

Another key characteristic of the H-IM-79E is its superior temperature stability. The unit is equipped with precision temperature control technology that ensures consistent cooling performance, preventing temperature fluctuations that can compromise food quality and safety. This reliability is crucial in commercial settings where maintaining optimal storage conditions is essential.

The design of the H-IM-79E is also noteworthy. It features a compact footprint, allowing it to fit seamlessly into various commercial environments without taking up valuable floor space. Additionally, the unit is built with durable materials, ensuring longevity and minimizing maintenance needs.

User-friendly interfaces make the H-IM-79E easy to operate. It includes advanced monitoring and diagnostics capabilities, allowing business owners to track performance in real-time and address potential issues before they escalate. The incorporation of smart technologies means that operators can remotely monitor and control the system, providing flexibility and peace of mind.

In summary, the Heatcraft Refrigeration Products H-IM-79E stands out for its energy efficiency, eco-friendly refrigerant use, reliable temperature control, compact design, and user-friendly features. This combination of attributes makes it an ideal choice for businesses that prioritize both sustainability and performance in their refrigeration needs.