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Summary of Contents for Ice-O-Matic EF Series
- Page 1 SERVICE AND INSTALLATION MANUAL EF and EMF Series Flaked ICE Machines ICE-O-Matic 11100 East 45th Ave Denver, Colorado 80239 Part Number 9081325-01 Print Date 1/07...
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Page 3: Table Of Contents
Flake Ice Machines General Information Model and Serial Number Format Electrical and Mechanical Specifications A5 Installation Guidelines Electrical and Plumbing Requirements Remote Condenser Installation Warranty Information General Operation Scheduled Maintenance Maintenance Procedure Cleaning and Sanitizing Instructions Winterizing Procedure Cleaning Stainless Steel Troubleshooting Trees Introduction Machine Runs, Does Not Make Ice... - Page 4 Flake Ice Machines How To Use This Manual ICE-O-Matic provides this manual as an aid to the service technician for installation, operation, and maintenance of flaked ice machines. This manual covers all EF and EMF series flaked ice machines. If used properly, this manual can also help the service technician troubleshoot and diagnose most of the problems that may occur with the machine.
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Page 5: Flake Ice Machines
Flake Ice Machines Model and Serial Number Format Model Numbers 80 0 A 1 Revision Level Condenser Type: A=Air W=Water R=Remote Voltage: 0=115V 5=240/50/1 6=208-230/60/1 Approximate 24 hour ice production: (x 10 @ 70°F/21°C Air and 50°F/10°C Water) Series: E=Environmental Flaker (Uses HFC Refrigerant) F=Self Contained Flake Ice Machine MF=Modular Flake Ice Machine Serial Number Date Code... - Page 7 Flake Ice Machines Electrical and Mechanical Specifications Production per 24 Hours @ 90°FA 70°FW Compressor Model Number *RLA EF Series / 60 Hertz Machines EF250A EF450A EF800A 10.4 EMF Series / 60 Hertz Machines EMF450A EMF450W EMF800A 10.5 EMF800W EMF1106A...
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Page 8: Installation Guidelines A6
Minimum Operating Temperature: 50°F (10°C) Maximum Operating Temperature 100°F (38°C), 110°F (43°C) on 50 Hz. Models. Note: ICE-O-Matic products are not designed for walk in cooler applications or outdoor installation. Incoming Water Supply (See Plumbing Diagram for line sizing Page A7-A9) Minimum incoming water temperature: 40°F (4.5°C) - Page 9 Flake Ice Machines General Information EF Series Page A7...
- Page 10 Flake Ice Machines General Information EMF Series Page A8...
- Page 11 Flake Ice Machines General Information EMF Series (48 Inch Wide) Page A9...
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Page 12: Remote Condenser Installation A10
100 foot line set run. For proper operation of the ICE-O-Matic ice machine, the following installation guidelines must be followed. Failure to do so may result in loss of production capacity, premature part failure, and may void all warranties. - Page 13 In the event that the Warranty Registration Card indicating the installation date has not been returned to ICE-O-Matic, the warranty period will begin on the date of shipment from the Company. Irrespective of the actual installation date, the product will be warranted for a maximum of seventy-two (72) months from date of shipment from the Company.
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Page 14: General Operation A12
Flake Ice Machines General Operation A general description of the flake ice machine operation is given below. The remainder of the manual provides more detail about the components and systems. Water enters a reservoir through the float valve and is gravity fed into the evaporator barrel through an opening in the bottom of the barrel. -
Page 15: Scheduled Maintenance
Failure to perform the required maintenance at the frequency specified will void warranty coverage in the event of a related failure. To insure economical, trouble free operation of the ice maker, it is recommended that the following maintenance be performed every 6 months by a qualified service technician. -
Page 16: Cleaning And Sanitizing Instructions B2
Flake Ice Machines CAUTION: Protective eyewear and gloves should be worn when using cleaning products. CLEANING AND SANITIZING INSTRUCTIONS 1. Turn the machine and water supply to the float off. 2. Remove or melt all ice in the bin. 3. Prepare one gallon (3.75l) of non-chlorine ice machine cleaner i.e. Nu-Calgon Nickel Safe, as directed on container. -
Page 17: Winterizing Procedure B3
Flake Ice Machines Winterizing Procedures Important! Whenever the ice machine is taken out of operation during the winter months, the procedure below must be performed. Failure to do so may cause serious damage and will void all warranties. 1. Turn off water to machine. 2. -
Page 18: Cleaning Stainless Steel B4
Flake Ice Machines Cleaning Stainless Steel Commercial grades of stainless steel are susceptible to rusting. It is important that you properly care for the stainless steel surfaces of your ice machine and bin to avoid the possibility of rust or corrosion. Use the following recommended guidelines for keeping your stainless steel looking like new: 1. - Page 19 Flake Ice Machines Troubleshooting Trees How To Use The Troubleshooting Trees The troubleshooting trees were developed to be used in conjunction with the service information in the sections that follow. If used together as intended, these two parts of the manual will allow the ice machine service technician to quickly diagnose many of the problems encountered with the ice machines.
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Page 20: Machine Runs, Does Not Make Ice C2
Flake Ice Machines Troubleshooting Trees Machine Runs, Does Not Make Ice Page C2... - Page 21 Flake Ice Machines Troubleshooting Trees Machine Runs, Does Not Make Ice Page C3...
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Page 22: Machine Does Not Run C4
Flake Ice Machines Troubleshooting Trees Machine Does Not Run Page C4... -
Page 23: Slow Production C5
Flake Ice Machines Troubleshooting Trees Slow Production Page C5... - Page 24 Flake Ice Machines Troubleshooting Trees Low Production Page C6...
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Page 25: High Suction Pressure C7
Flake Ice Machines Troubleshooting Trees High Suction Pressure Page C7... -
Page 26: Machine Freezes Up (Auger Seizes) C8
Flake Ice Machines Troubleshooting Trees Machine Freezes Up (Auger Seizes) Page C8... - Page 27 Flake Ice Machines Troubleshooting Trees Auger Motor Amp Draw Fluctuates Page C9...
- Page 28 Flake Ice Machines Troubleshooting Trees Water Leaking From Bottom of Evaporator Page C10...
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Page 29: Machine Produces Wet Ice C11
Flake Ice Machines Troubleshooting Trees Machine Produces Wet Ice Page C11... - Page 30 Flake Ice Machines Troubleshooting Trees Hot Evaporator, Low Suction Pressure and Discharge Pressure (Remotes Only) Page C12...
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Page 31: Noise Coming From Evaporator
Flake Ice Machines Troubleshooting Trees Noise Coming from Evaporator Page C13... -
Page 32: Water System
Flake Ice Machines Water System The water system in the flaker uses a floated operated valve that maintains the water level in the evaporator barrel during ice making. Float Valve and Reservoir Water enters the machine through the float valve located in the water reservoir and is gravity fed into the evaporator barrel through the water inlet tube. -
Page 33: Drip Boot D2
Flake Ice Machines Water Seal and Lower O-Ring The water seal is located in the bottom of the evaporator and prevents water from leaking out of the evaporator. The water seal consists of two (2) components: the seal and the seal face. The seal is fitted into the lower bearing housing and the seal face fits around the auger shaft with the rubber side seating against the bottom of the auger. -
Page 34: Drive System
Flake Ice Machines Drive System Drive System The drive system consists of all Evaporator components used to turn the auger. The auger drive motor turns the gear reducer via a V-Belt. A coupler is used to connect the gear reducer to the auger. -
Page 35: Gear Reducer E2
Flake Ice Machines Gear Reducer The gear reducer transfers torque to the auger. The auger drive motor turns the input shaft of the gear reducer at a high rate of speed. The input shaft turns a worm (screw type gear) that meshes with a worm gear (bronze gear). -
Page 36: Evaporator And Internal Components E3
Flake Ice Machines Drive System Evaporator and Internal Components The evaporator assembly includes the evaporator and all of its internal components. The internal components consist of the upper and lower bearings and housings, water seal assembly, upper and lower O-Rings, auger, and upper and lower nuts. The evaporator assembly will need to be disassembled for inspection or repair if one or more of the following conditions exist. - Page 37 Flake Ice Machines Remove the upper evaporator retaining nut by using a chain wrench (wrap chain around the upper part of the nut) to loosen the nut. Setscrews are not used on the upper nut. (Right Hand Thread) Caution: Do not use a hammer and chisel to loosen the nut, as damage will result. Remove the auger and upper bearing housing assembly by tapping upward on the auger shaft with a rubber mallet, or place a block of hardwood against the auger shaft and tap upwards on the block with a hammer.
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Page 38: Evaporator And Auger Inspection E5
Flake Ice Machines Evaporator Barrel and Auger Inspection Inspect the evaporator for damage around the dispense opening. If it is cracked or bulged outward, it is probably due to a bin control failure. Check both bin controls for proper adjustment and operation before the machine is put back into service. -
Page 39: Bearing, Water Seal And O-Rings E6
Flake Ice Machines Bearings, Water Seal and O-Rings There is a bearing at the top and bottom of the auger shaft to allow the auger to rotate freely with a minimum amount of friction. The lower bearing is a sealed ball bearing and the upper bearing is a tapered roller bearing. -
Page 40: Seal Face Installation E7
Flake Ice Machines Seal Face Installation Lightly lubricate the rubber portion of the seal face and apply a small amount of silicone sealant to the metal part of the seal face (rubber side) that seats against the auger. Install the seal face on the auger. Caution: Do not scratch or damage the seal face. - Page 41 Flake Ice Machines Drive System Exploded View of the Evaporator Page E8...
- Page 42 Flake Ice Machines Refrigeration System Refrigeration System and Components Before diagnosing the refrigeration system, it is important that the refrigerant charge be correct. Whenever the refrigeration system has been opened, the filter-drier must be replaced and the proper refrigerant charge must be weighed in or measured. See refrigerant charge information on Page A5.
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Page 44: Refrigeration System
Flake Ice Machines Refrigerant Pressures (Continued) The operating pressures for models utilizing the Alco thermostatic expansion valve are listed below. Model Number Temp °F EMF2306R 90°F 70°F -20°F/50°F 120°F/110°F EMF2306W 90°F 70°F 50°F 110°F EMF405A 90°F 70°F 50°F 110°F 90°F EMF450A 70°F 50°F... - Page 45 Flake Ice Machines Refrigerant Pressures (Continued) The operating pressures for models utilizing the Sporlan thermostatic expansion valve are listed below. Model Number Temp °F EF250/255 70°F 90°F EMF405A 70°F 90°F EF/EMF450A 70°F 90°F EMF450W 70°F 90°F EMF705A 70°F 90°F EF/EMF800A 70°F 90°F EMF800W...
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Page 47: Air Cooled Condenser F5
Flake Ice Machines Refrigeration System To properly cool the condenser, there must be adequate airflow around the machine. The ambient air temperature should not exceed 100°F (38°C). See Installation Guideline on Page A6. The condenser coil and fan blades must be kept clean. The condenser can be cleaned with compressed air or by using a brush. -
Page 48: Expansion Valve F7
Important! Use only ICE-O-Matic O.E.M. replacement expansion valves. Warranty will be void if an expansion valve other than the correct ICE-O-Matic replacement part is used. Page F7... -
Page 49: Production Check F8
Flake Ice Machines Expansion Valve Diagnosis Symptom Single Evaporator Machine 1. Evaporator flooded but suction pressure too high. Compressor has been checked and appears to be good. Suction line at compressor may be colder than normal. 2. Evaporator starved, no frost on line exiting evaporator. -
Page 50: Evaporator F9
Flake Ice Machines Refrigeration System Evaporator When water fills the evaporator, liquid refrigerant is circulated through the tubing wrapped around the evaporator. As the liquid refrigerant in the tubing vaporizes, it absorbs heat from the water, causing it to freeze. The evaporator should be completely flooded with refrigerant while the machine is making ice. -
Page 51: Remote System F10
Flake Ice Machines Refrigeration System Remote System Machines that use remote condensers have several components that are not used in self contained machines. A mixing valve controls the head pressure when the ambient temperature at the condenser drops below 70°F (21°C). When the bin fills with ice or is turned off at the selector switch, the machine will pump all the refrigerant into the receiver before shutting off. -
Page 52: Pump Down System F11
Flake Ice Machines Mixing Valve Diagnosis: Problem 1. Head pressure low, Line between valve and receiver cold. Ambient condenser temp. below 70°F (21°C) 2. Head pressure low, Line between valve and receiver hot. 3. Head pressure low, Line returning from condenser is cool. - Page 53 Most Ice-O-Matic ice machine use R134a or R404a refrigerant. Always check the serial number data plate for the proper type of refrigerant and the amount used in the machine you are servicing.
- Page 54 Flake Ice Machines Refrigeration System Method of Charging Refrigerant In order to achieve a properly charged refrigeration system, the system must be completely evacuated. To achieve a complete evacuation you will need a service gauge manifold with properly maintained hoses, and a vacuum pump capable of pulling a 50-micron vacuum. This will require a two-stage pump.
- Page 55 Flake Ice Machines Refrigeration System Remote models with sixty (60) foot lineset runs will need an additional fifteen (15) ounces of refrigerant added. In some cases the complete refrigerant charge may not enter the refrigeration system. In those instances, close the gauge manifold high side valve and disconnect the manifold from the high side port.
- Page 56 Flake Ice Machines Electrical System Control Circuit All machines in this manual are controlled basically the same way. Selector Switch The selector switch is used to start the ice making cycle or to turn the machine off. The machine is put into operation by switching the selector switch to the ON position. Contactor When the selector switch is in the ICE position, the contactor coil is energized and pulls in the contactor contacts.
- Page 57 Flake Ice Machines Electrical System Compressor Check Disconnect power before servicing If the compressor uses an internal overload, be certain that the compressor has cooled and the overload has reset before diagnosing the compressor. If the compressor is cool and is still not running, check the compressor motor windings by first removing the wires at the compressor terminals.
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Page 58: Electrical System
5 minutes. The bin control can be adjusted by turning the adjusting screw clockwise to lower the cut-out temperature (colder) and counterclockwise to raise the cut-out temperature (warmer). Adjustment Screw EF Series Bin Thermal Well EMF Series Thermal Well Page G3... -
Page 59: Auger Motor Relay G4
Mechanical Bin Control The mechanical bin control is located in the top panel of the ice bin on the EF Series and on the top of the down chute on the EMF Series. When ice fills the down chute on the EMF Series units, or ice fills the bin on EF Series units a rubber diaphragm pushes up against a switch. -
Page 60: Compressor Delay G5
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. - Page 61 Flake Ice Machines Electrical System EF250/255/405 EF450A/W 9071694-01 Page G6...
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Page 62: Ef800 A/W G7
Flake Ice Machines Electrical System EF800A/W 9071963-01 Page G7... -
Page 63: Emf450/405 A/W G8
Flake Ice Machines Electrical System EMF450/405A/W 9071958-01 Page G8... -
Page 64: Emf800 A/W G9
Flake Ice Machines Electrical System EMF800A/W 9071954-01 Page... -
Page 65: Emf705/1005/1006 A/W G10
Flake Ice Machines Electrical System EMF705/1005/1006A/W 9071956-01 Page G10... - Page 66 Flake Ice Machines Electrical System EMF1106R 9071962-01 Page G11...
- Page 67 Flake Ice Machines Electrical System EMF2306A/W 9071955-01 Page G12...
- Page 68 Flake Ice Machines Electrical System EMF2306R 9071960-01 Page G13...
- Page 69 Flake Ice Machines Electrical System EMF2305L 9071959-01 Page G14...
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