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Summary of Contents for Howe Rapid Freeze 2000-RL
- Page 1 Ice Flaker Rapid Freeze ® Installation & Service Manual 2000-RL 3000-RL 4000-RL 6000-RL Phone: 1-773-235-0200 Howe Corporation Fax: 1-773-235-0269 1650 North Elston Avenue Website: www.howecorp.com Chicago, IL 60642-1585 Email: howeinfo@howecorp.com...
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Page 2: Table Of Contents
ENGINEERING GUIDELINES .........................3 Location Requirements ................................3 Water Supply Requirements ..............................3 Drain Water Piping Requirements ............................4 Electrical Requirements ................................4 Refrigeration Requirements ..............................5 Piping Table..................................... 8 Refrigerant Pipework ................................8 Refrigerant Pipework Insulation Requirements ........................8 FIELD INSTALLATION ..........................9 Safety Information and Guidelines ............................ -
Page 3: Engineering Guidelines
Location Requirements If installing the Ice Flaker with a Howe Ice Bin, Howe Rapid Freeze Ice Flakers are designed to ensure that the bin is adequately secured to the... -
Page 4: Drain Water Piping Requirements
The two vertical Generally, filtration of cold supply water is pipe drops should drain water through an recommended. Howe offers a complete line of indirect water connection with an “Air Gap”. replaceable core cartridge filter treatment... -
Page 5: Refrigeration Requirements
Valve Field Furnished Condensing Units No liquid line solenoid valves or suction Howe is not responsible for the performance of pressure regulating valve of any type should be field furnished condensing units. Howe assigned to the Ice Flaker at the Rack. A recommends field furnished condensing units solenoid valve comes installed at the Ice Flaker. - Page 6 PSIG on HFC refrigerant applications. Please solution is to install a 5/8” liquid stub directly teed from the main liquid feed. consult Howe if the system design intent will allow liquid pressure to drop below this Racks equipped with gas defrost are not threshold.
- Page 7 Figure 1...
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Page 8: Piping Table
R-744 installations or thermal insulation intended for cold secondary refrigerant applications. applications. Howe recommends the use of hard drawn ACR Liquid lines should be covered with 1/2” thick type L tubing with refrigeration grade wrought and suction lines with 3/4” thick material. -
Page 9: Field Installation
Field Installation Ground Mounting Safety Information and Guidelines Concrete slab raised six inches above ground Only qualified service technicians should level provides a suitable base. Raising the base attempt to install, service, or maintain the Ice above ground level provides some protection Flaker. -
Page 10: Piping
Piping Leak Testing The Ice Flaker has been thoroughly cleaned and After all refrigerant connections are made, the dehydrated at the factory. However, foreign entire system must be leak tested. matter may enter the system by way of the The complete system should be pressurized to piping to the condensing unit. -
Page 11: Field Wiring
Field Wiring 5. Connect the following between the All field wiring must be in compliance with local Control Panel and the Condensing Unit. and national codes. Use only copper conductors of the appropriate size. Control Condensing Component Panel Unit An electrical Control Panel is shipped loose with Pump all Ice Flakers and should be wall-mounted near Down... -
Page 12: Evacuation
Evacuation Refrigerant Charging Instructions Do not use the refrigeration compressor to (For ice flakers with condensing evacuate the system. Do not start the units) compressor while it is in a vacuum. All Ice Flakers are shipped with a small holding charge of dry nitrogen. -
Page 13: Installation Checklist
Installation Checklist 1. Has the ambient temperature been verified between 50°F – 100°F? (see Location Requirements p.3) 2. Has the incoming water temperature been verified between 45°F – 90°F? (see Water Supply Requirements p.3) 3. Has the water supply pressure been verified between 20 PSIG and 60 PSIG? (see Water Supply Requirements p.3) 4. -
Page 14: Start Up And Operation
Start Up and Operation Water Operation 1. Water Inlet Connection 5. Water Distribution Pan & Side Spouts 2. Float Valve 6. Sump Connections 3. Water Pump 7. Stop Valve 4. Water Regulating Valve 8. Drain Outlet... - Page 15 Adjust the water level by loostening the wing Water Inlet nut then raise or lower the arm to make The supply water feed for the Ice Flaker must adjustments to desired water level. Tighten be connected here. A shut-off valve should be wing nut, test for proper level and adjust again field installed before this connection.
- Page 16 Water Distribution Pan Water Regulating Valve The Water Distribution Pan circulates the water Adjust the water level in the Water Distribution fed from the Water Pump down the walls of the Pan by opening or closing the Water Regulating Evaporator. Valve located directly above the Water Sump.
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Page 17: Refrigeration Operation
Refrigeration Operation *Piping insulation not shown 1. Evaporator Pressure Regulator (EPR) 5. TXV Sensing Bulb 2. Solenoid Valve 6. Evaporator 3. Sight Glass 7. Pressure Tap 4. Thermostatic Expansion Valve (TXV) - Page 18 Evaporator Pressure Setting Model Temperature R-404A R-507 R-407A R-448A R-449A 2000-RL -5°F 28 PSI 30 PSI 18.5 PSI 19.8 PSI 20 PSI 3000-RL -5°F 28 PSI 30 PSI 18.5 PSI 19.8 PSI 20 PSI 4000-RL -5°F 28 PSI 30 PSI 18.5 PSI 19.8 PSI 20 PSI...
- Page 19 Thermostatic Expansion Valve (TXV) Adjusting Refrigeration to the Ice Flaker Always adjust the EPR prior to adjusting the 1. Visually inspect the frost pattern on the TXV. freezing surface of the Evaporator. If the TXV is underfeeding, the top of the frost pattern will be a milky white color and the bottom will be clear, soft, and not harvest properly.
- Page 20 Solenoid Valve Low Pressure Control The Solenoid Valve controls the flow of liquid All Howe Condensing Units are supplied with a refrigerant to the Evaporator. separate Low Pressure Control for continuous pump down. The Solenoid Valve should energize immediately upon starting the Ice Flaker.
- Page 21 Field Capacity Check = Capacity = Lbs. per 24 hrs. The Ice Flaker is a continuous production machine and makes ice at a steady rate once 8. Compare the number with the rated stabilized. capacity of the Ice Flaker. Keep in mind A Capacity Check confirms the Ice Flaker and temperatures outside the rated refrigeration settings are correct.
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Page 22: Electrical Operation
Electrical Operation 1. Motor Contactor (M1) 4. Fuses (FU1 & FU2) 2. Control Module (CM) 5. Water Pump Relay (R1) 3. Transformer (T1) 6. Level Control Relay (LC1) 1. Term 1: 24V Input Power 7. Term 7: Solenoid Valve Contact 2. - Page 23 Level Control Relay (LC1) This relay processes the signal from the Photo Control Module (CM) The control Module features eight wire Eyes. It shuts the Ice Flaker off when the Ice Bin terminals, two adjustable dials, and one is full to prevent damage caused by ice backing indicating light.
- Page 24 Off-Delay Setting Motor Overload Setting Under Normal Operation the Off-Delay Setting The proper adjustment of Motor Overload should be adjusted to run approximately 2 Setting will protect the Ice Flaker and help avoid minutes after the Solenoid Valve shuts off the nuisance service calls.
- Page 25 Photo Eyes (Level Control) Photo Eye Wiring...
- Page 26 During Normal Operation, all LEDs should be lit. need to be properly mounted by the installing The Level Control Relay (LC1) should open the contractor. Please contact Howe for further Solenoid Valve, and the Ice Flaker should begin information. making ice.
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Page 27: Mechanical Operation
Mechanical Operation 1. Ice Deflector 4. Speed Reducer 2. Ice Blade 5. Drive Motor 3. Squeegee... - Page 28 Ice harvesting problems are often caused by Ice Deflector improper refrigeration settings. Adjusting the The Ice Deflector prevents ice from dropping Ice Blade should be a last resort after all other into the water return trough. means have been expended. A properly installed Ice Deflector should have The clearance between the outermost tip of the the top outer edge positioned outside of the ice...
- Page 29 Having a Squeegee not in contact with the freezing surface will create wet ice which causes drag on the Ice Blade. This puts greater stress on the Sleeve Bearings and causes them to wear faster than normal. Drive Motors may provide a good deal of resistance when being removed.
- Page 30 Improper refrigeration setting and lack of maintenance can cause the Sleeve Bearings to wear faster than normal. Please contact Howe to receive the Sleeve Bearing Replacement Instructions for your model Ice Flaker.
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Page 31: Start-Up Checklist
Start-Up Checklist 1. Is the operating water level in the Water Sump correct? (see Float Valve p.15) 2. Is the operating water level in the Water Distribution Pan correct? (see Water Distribution Pan p.15) 3. Is the Stop Valve on Sump Drain connection closed? (see Stop Valve p.15) 4. -
Page 32: Maintenance
Maintenance Preventative Maintenance Schedule Page Every 3 Every 6 Every 12 Number Months Months Months Lubricate Sleeve Bearings • Ensure Float Valve is unclogged and • flowing freely Verify correct Sequence of Operation of • Photo Eye sensors Clean and Sanitize Ice Flaker •... -
Page 33: Cleaning Procedure
Cleaning Procedure To keep the evaporator in peak performance, the Ice Flaker should be cleaned every 6 months or more often if water conditions dictate. Only use cleaning solutions that are labeled as “Nickel-Safe”. 4. Close water supply at shut-off valve. 1. -
Page 34: Sanitizing Procedure
Sanitizing Procedure 1. Mix 16 oz. of household bleach with 2 gallons of warm water (90°F – 115°F). 2. Pour solution into the Water Sump to the normal operating level, then re- circulated the sanitizing solution for approximately 20 minutes by turning on Drive Motor and Water Pump. -
Page 35: Lubrication
Lubrication Speed Reducer Lubrication All speed reducers are to be filled with Mobil Glygoyle 460 Lubricant only. When adding or changing oil for any reason, it should be remembered that oils of various types are not compatible with Mobil Glygoyle 460. -
Page 36: Water Filtration
Water Filtration cause added wear on parts and can clog valves and impede flow. The purpose of water filtration is to keep the Ice Flaker clean and operating efficiently. The value to the user is reduced operating cost due to less maintenance, improved performance and a greater return on investment as result of extended asset life. - Page 37 Howe Water Filters Howe offers a complete line of water treatment systems designed to extend the life and performance of the Ice Flaker. Howe Water Filters inhibit the formation of scale and provides additional corrosion protection. They remove 95% of all dirt, rust, and sediment larger than 5 microns.
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Page 38: Troubleshooting
Troubleshooting (Note: All wire colors are subject to change) Problem Possible Cause Possible Solution 1. Unplugged or defective Photo Eye(s). 1. Ensure Photo Eyes are properly and securely connected. Place a wire jumper between terminals labeled “Blue” and “Black” it the Control Panel. If Ice Flaker starts, Photo Eyes may be defective and need to be replaced. - Page 39 1. Ambient Temperature is too low. 1. If ambient temperature is below 50°F, relocate Ice Flaker to a warmer area. Ice accumulates on the ribs of Contact Howe about Low Ambient Kit. Bottom Casting 1. Motor Overload setting is too high.
- Page 40 4. Check that all drains are flowing freely and pitched away from Ice Bin. 5. Ice turnover is low and Ice Bin inventory 5. Use or discard ice within a reasonable time of producing it. Contact Howe about has become stale and clumped by lengthy Energy Saver Ice Production Management System.
- Page 41 Wiring Diagram – 230/1/60 Power Ice Flaker with Howe Supplied Condensing Unit or other voltages or flakers not supplied with condensing units from Howe Corporation - please have a serial number and contact factory for the correct wiring diagram...
- Page 42 Specifications - 2000-RL with Heater...
- Page 43 Refer to our website for replacement parts listing. www.howecorp.com Installation & Service Manual For RLE Series Flakers Rev. Date: Apr-19...
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