Ice-O-Matic EMF Series, EF Series installation manual Compressor Delay, Pump Down Control

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Flake Ice Machines

Electrical System

Compressor Delay

When the machine starts, the compressor delay timer is energized. Once the timer counts out, the contactor is energized and the compressor starts.

The compressor delay timer will keep the compressor off for approximately 5 minutes when the machine restarts for any reason. This will reduce the load on the auger drive system. On remote units, the compressor delay timer energizes the liquid line solenoid.

Note: The compressor delay timer is only utilized on the EMF1106/5 and EMF2306/5 units.

Pump Down System (Remote Only)

If a remote machine is shut down by the selector switch or bin control, the liquid line solenoid valve is de-energized allowing the valve to close. This blocks the flow of refrigerant causing all the refrigerant to be pumped into the receiver and condenser. This is done to prevent liquid refrigerant from migrating into the compressor during the off cycle, which could damage the compressor on start-up. Also see Pump Down System in the Refrigeration Section on page F11. As the refrigerant is pumped into the receiver, the suction pressure begins to drop. Once the suction pressure reaches approximately 19 psi (1.7 bar) the pump down control contacts open, which will de-energize the compressor contactor.

Pump Down Control

The pump down control is a low pressure control that shuts the machine off when the suction pressure drops during the pump down phase. The control is factory set to open at 19 psi (1.7 bar) and close at 45 psi (3.1 bar). The pump down control does not normally need to be adjusted, however an adjustment may be made by turning the adjustment screw,

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Contents Service and Installation Manual Page Table Of Contents Flake Ice MachinesHow To Use This Manual General Information Model and Serial Number Format Model Numbers EF 80 0 aSerial Number Date Code Page Electrical and Mechanical Specifications RLA LRAInstallation Guidelines Ambient Operating Temperatures Electrical SpecificationsAdjustments DrainsEF Series EMF Series EMF Series 48 Inch Wide A10 Parts and Labor Domestic & International Limited Warranty ICE-O-MaticGeneral Operation Evaporator Float Gear Reducer Belt Auger MotorScheduled Maintenance Maintenance ProcedureCleaning and Sanitizing Instructions Winterizing Procedures Winterizing ProceduresCleaning Activity Cleaning Agent Cabinet CareMethod of Application Troubleshooting Trees How To Use The Troubleshooting TreesMachine Runs, Does Not Make Ice Flake Ice Machines Machine Does Not Run Slow Production Low Production High Suction Pressure Machine Freezes Up Auger Seizes Auger Motor Amp Draw Fluctuates Water Leaking From Bottom of Evaporator Machine Produces Wet Ice C12 Noise Coming from Evaporator Water System Water SystemFloat Valve and Reservoir Drip Boot Water Seal and Lower O-RingDrive System Drive SystemCoupler Evaporator Disassembly Evaporator and Internal ComponentsRemove 2 setscrews Evaporator Barrel and Auger Inspection Bearings, Water Seal and O-Rings Seal Face Installation Evaporator ReassemblyExploded View of the Evaporator Refrigeration System Refrigeration System and ComponentsCompressor Page Refrigerant Pressures EF/EMF450A Page High Pressure Safety Water Cooled CondenserWater Regulating Valve Air Cooled Condenser RemoteExpansion Valve Expansion Valve Diagnosis Symptom ProblemRemedy Production CheckEvaporator Remote System Remote CondenserMixing Valve L.A.C., Headmaster Mixing Valve Diagnosis Problem Possible Cause Remedy Pump Down System Remote OnlyLiquid Line Solenoid Receiver RefrigerantMethod of Charging Refrigerant F14 Selector Switch Electrical SystemControl Circuit ContactorOverload External CapacitorsStart Relay Safety Control Bin ControlThermostatic Bin Control Mechanical Bin Control Auger Motor RelayCompressor Delay Pump Down ControlEF250/255/405 EF450A/W 9071694-01 EF800A/W 9071963-01 EMF450/405A/W 9071958-01 EMF800A/W EMF705/1005/1006A/W 9071956-01 EMF1106R EMF2306A/W EMF2306R EMF2305L 9071959-01 Page

EF Series, EMF Series specifications

Ice-O-Matic is a recognized leader in the ice-making industry, known for its innovative technologies and commitment to quality. Among its flagship products are the EMF Series and EF Series ice machines, designed to meet the demands of various commercial environments. These machines combine advanced features with user-friendly functionalities, making them suitable for restaurants, bars, hotels, and convenience stores.

The EMF Series stands out with its capability to produce ice in a range of styles, including half cubes, full cubes, and gourmet ice. This versatile output makes it an excellent choice for establishments that require different ice types for various applications. The EMF machines are designed with a built-in storage bin, optimizing floor space while ensuring a continuous supply of ice. With production capabilities that can range from 200 to 800 pounds of ice per day, they cater exceptionally well to high-volume demands.

On the other hand, the EF Series focuses on efficiency and reliability. Featuring modular designs, these machines can be stacked or used in tandem, providing flexibility for businesses as their needs evolve. The EF Series offers a robust production range, capable of generating up to 1,500 pounds of ice daily, allowing it to service larger venues without sacrificing performance. The high-density foam insulation ensures that ice stays intact longer, reducing waste and enhancing overall efficiency.

Both series are equipped with Ice-O-Matic’s innovative Pure Ice technology, which not only ensures high-quality ice but also addresses concerns related to water quality. The built-in water filter options reduce impurities, resulting in clearer and more appealing ice. Additionally, these machines utilize an easy-to-clean design, promoting hygiene and maintenance simplicity. The front-access service doors facilitate straightforward maintenance, further minimizing downtime in busy environments.

Both EMF and EF Series machines are energy-efficient, boasting ENERGY STAR certifications. They are built with an environmentally friendly refrigerant, which helps establishments reduce their carbon footprint while saving on energy costs.

In conclusion, Ice-O-Matic's EMF and EF Series ice machines bring together cutting-edge technology, versatility, and efficiency, making them prime choices for any commercial establishment seeking reliable ice production. Their superior design features, user-friendly maintenance, and commitment to quality ensure that they meet the varied demands of the foodservice industry while promoting sustainability.
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