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Summary of Contents for Howe 1000-RLE
- Page 1 Rapid Freeze Ice Flaker ® Installation & Service Manual For Use with Remote Single Condensing Unit 1000‐RLE 2000‐RLE 3000‐RLE 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 .................................... 7 Refrigerant Pipework ................................ 7 Refrigerant Pipework Insulation Requirements ........................ 7 FIELD INSTALLATION .......................... 8 Safety Information and Guidelines ............................ 8 Inspection .................................... 8 Condensing Unit Rigging and Mounting ........................... 8 Piping ...................................... 9 Leak Testing .................................... 9 ... -
Page 3: Engineering Guidelines
THE INFORMATION FOUND IN THIS MANUAL IS INTENDED FOR USE BY INDIVIDUALS POSSESSING EXPERIENCED BACKGROUNDS IN ELECTRICAL, REFRIGERATION AND MECHANICAL REPAIR AND MAINTENANCE. ANY ATTEMPT TO REPAIR OR ALTER THIS EQUIPMENT MAY RESULT IN PERSONAL INJURY OR PROPERTY DAMAGE. THE MANUFACTURER IS NOT RESPONSIBLE FOR THE INTERPRETATION OF THE INFORMATION CONTAINED HEREIN, NOR HAS THE MANUFACTURER ASSUMED ANY LIABILITY IN CONNECTION WITH ITS USE. THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY LOSS, DAMAGE OR INJURY CAUSED AS A RESULT OF EITHER (I) ANY REPAIR OR REPLACEMENT TO THE MANUFACTURER’S EQUIPMENT THAT IS DONE BY A THIRD PARTY NOT PREVIOUSLY APPROVED BY THE MANUFACTURER, OR (II) ANY REPAIR OR SERVICE WORK PERFORMED ON ANY OF THE MANUFACTURER’S EQUIPMENT WHICH DOES NOT STRICTLY FOLLOW THE PROCEDURES SET FORTH HEREIN. Engineering Guidelines This cold water supply must be within the range of 45°F to 90°F. Location Requirements Minimum Water Maximum Water Howe Rapid Freeze Ice Flakers are designed to Supply Temp. Supply Temp. operate in ambient room temperatures 45°F 90°F between 50°F and 100°F. The cold water supply pressure must be within Minimum Ambient Maximum Ambient a 20 PSIG to 60 PSIG range. Temperature Temperature 50°F 100°F Minimum Water Maximum Water ... -
Page 4: Drain Water Piping Requirements
A 3/8” OD copper tube should connect the field Electrical Requirements installed shut off valve with the Ice Flaker water inlet connection located at the rear of the A dedicated 15 amp, 2 pole, 208‐230 volt power machine. supply from a field furnished and installed disconnect switch is required for each Ice Drain Water Piping Requirements Flaker. A dedicated 3 pole, 208‐230 volt power supply from a field furnished and installed disconnect switch is required for each Remote Condensing Unit. The amperage of the power supply circuit must match the selected Remote Condensing Unit supplied by Howe with respect to Minimum Circuit Amperage (MCA) and Maximum Overcurrent Protection Device (MOPD) nameplate information. A two conductor control circuit is required to interconnect the Ice Flaker with the Remote Condensing Unit interlocking relay. The Drain Water Piping figure above illustrates the recommended piping to a floor sanitary sewer hub or trench drain. The two vertical pipe drops should drain water through an ... -
Page 5: Refrigeration Requirements
Refrigeration Requirements Model Refrigeration Requirements* Optimum Evaporator Temperature 1000‐RLE 9,500 BTU/hr 0°F 2000‐RLE 18,000 BTU/hr ‐5°F 3000‐RLE 27,000 BTU/hr ‐5°F *Refrigeration requirements are based on operating the Ice Flaker with 70°F supply water and 90°F ambient air conditions. Refrigeration requirements and/or capacity will vary with temperatures outside these conditions. Field Furnished Condensing Units Howe Furnished Condensing Units Howe is not responsible for the performance of Howe furnished condensing units are properly field furnished condensing units. Howe sized for outdoor design ambient temperature recommends field furnished condensing units and supply water temperature conditions. be sized with sufficient refrigeration capacity at These condensing units are factory equipped the local design outdoor ambient temperature with the following accessories: including enough system capacity to offset Liquid Line Filter/Drier and Sight Glass suction line pressure losses. Howe also Suction Filter recommends field furnished condensing units Suction Accumulator be at least equipped with the accessories ... - Page 6 Figure 1 6 ...
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Page 7: Piping Table
Piping Table Model Liquid Line* Suction Line* Suction Riser* 1000‐RLE 3/8” ODS 7/8” ODS 3/4” ODS 2000‐RLE 1/2" ODS 1‐1/8” ODS 7/8” ODS 3000‐RLE 1/2" ODS 1‐3/8” ODS 1‐1/8” ODS *For runs up to 150 feet. If longer, use next larger line size. Refrigerant Pipework Refrigerant Pipework Insulation Howe recommends the field refrigerant piping be installed according to the Suggested Requirements Refrigerant Piping Diagram shown on previous Field refrigerant pipework should be insulated page. These pipe sizes are for HFC refrigerants with closed cell flexible elastomeric foam and are not applicable to 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. copper long radius elbows and fittings only. No The insulation material should be moisture soft drawn tubing should be used in the vapor resistant when correctly installed refrigerant pipe installation. ... -
Page 8: 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. from ground water and wind‐blown matter. Before tightening mounting bolts, recheck level Make sure all power sources are disconnected of unit. The unit should in all cases be located before any service work is done to the Ice with a clear space in all directions that is at a Flaker. minimum, equal to the height of the unit above the mounting surface. A condensing unit All field wiring must conform to the mounted in a corner formed by two walls, may requirements of the equipment and all result in discharge air recirculation with applicable local codes and national codes. resulting loss of capacity. Always refer to the Condensing Unit Roof Mounting manufacturer’s installation manual for further Due to the weight of the units, a structural specification and guidance. analysis by a qualified engineer may be required Inspection before mounting. Roof mounted units should Upon receipt, check all items against the bill of be installed level on steel channels or an I‐beam lading to make sure all crates and cartons are frame capable of supporting the weight of the accounted for. unit. Access Any shortage or damages should be reported to ... -
Page 9: 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. Therefore, care no more than 150 psig with refrigerant and dry must be used during installation of the piping to nitrogen (or dry CO ). prevent entrance of foreign matter. It is recommended that this pressure be held Install all refrigeration system components in for a minimum of 12 hours and then rechecked. accordance with applicable local and national For a satisfactory installation, the system must codes and in conformance with good practice be leak tight. required for the proper operation of the Ice Flaker. The refrigerant pipe size should be selected from the Piping Table. The interconnecting pipe size is not necessarily the same as the stub‐out on the condensing unit or the Ice Flaker. The following procedures should be followed: 1. Do not leave units or piping open to the atmosphere any longer than is absolutely necessary. 2. Use only refrigeration grade copper tubing, properly sealed against contamination. 3. -
Page 10: Evacuation
Evacuation Field Wiring Do not use the refrigeration compressor to All field wiring must be in compliance with local evacuate the system. Do not start the and national codes. Use only copper compressor while it is in a vacuum. conductors of the appropriate size. A good, deep vacuum pump should be 1. Install disconnect (not supplied by connected to both the low and high side factory). evacuation valves with copper tube or high vacuum hoses (1/4” ID minimum). 2. Connect 208‐230/1/60 power to the two black wires marked “L1” and “L2” If the compressor has service valves, they in the junction box on the rear of the should remain closed. Ice Flaker. A deep vacuum gauge capable of registering 3. In the junction box there are two red pressure in microns should be attached to the wires marked “A” and “B”. Remove system for pressure readings. wire nut. A shut off valve between the gauge connection and vacuum pump should be provided to allow 4. Connect the normally‐open isolating the system pressure to be checked after contacts from the relay mounted in the evacuation. ... -
Page 11: Refrigerant Charging Instructions
Refrigerant Charging Instructions All Ice Flakers are shipped with a small holding charge of dry nitrogen. Ice flakers must be evacuated before charging. 1. Install a liquid line drier in the refrigerant supply line between the service gauge and the liquid service port of the receiver. This extra drier will ensure that all refrigerant supplied to the system is clean and dry. 2. When initially charging a system that is in a vacuum, liquid refrigerant can be added directly into the receiver tank. 3. The approximate refrigerant charge is listed in the table below. Do not over charge. System Piping Model Charge ... -
Page 12: 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. Has the filtered water supply been verified as not RO water? (see Water Supply Requirements p.3) 5. Has the Ice Flaker been located near a floor sanitary sewer drain? (see Drain Water Piping Requirements p.4) 6. Have the EPR and Suction Line Heat Exchanger been installed correctly? (see Suggested Refrigerant Piping Diagram p.6) 7. Have all the refrigeration lines been sufficiently insulated? (see Refrigerant Pipework Insulation Requirements p.7) 8. Has the Condensing Unit been mounted properly? (see Condensing Unit Rigging and Mounting p.8) 9. Has the system been leak tested properly? (see Leak Testing p.9) 10. Has the system been evacuated properly? (see Evacuation p.10) 11. Have the Photo Eye sensors been connected? (see Field Wiring p.10) 12. Has the system been charged properly? (see Refrigerant Charging Instructions p.11) ... -
Page 13: Start Up And Operation
Start Up and Operation Water Operation 1. Water Inlet Connection 6. Sump Connections 2. Float Valve 7. Stop Valve 3. Water Pump 8. Condensate Drain Outlet 4. Water Regulating Valve 9. Sump Drain Outlet 5. Water Distribution Pan & Side Spout 13 ... - Page 14 Water Inlet The supply water feed for the Ice Flaker must be connected here. A shut‐off valve should be field installed before this connection. The Ice Flaker requires a minimum water pressure of 20 PSIG and a maximum of 60 PSIG. Float Valve The water level in the Water Sump is regulated by the Float Valve. Water Pump The Water Pump drives the water in a The water level should always be below the continuous flow through the system. opening on the side of the Water Sump. The Water Pump inlet should be submerged at all times. Air should never be pulled into the intake. Overflow Drain The higher of the two drain connections on the Water Sump is the Overflow Drain. If water is exiting the Water Sump through the Overflow Drain, the water level is too high and the Float Valve needs to be adjusted. Section View of Water Sump Sump Drain Water should never be allowed to flow from the The lower of the two is the Sump Drain. It is Water Sump back through the opening and into used to flush the Water Sump of all liquid. the Bottom Casting. Stop Valve Adjust the water level by rotating the float end The stop valve attached to the Sump Drain of the Float Valve. Rotate clockwise to raise the fitting should always be closed during normal water level and counterclockwise to lower the ...
- Page 15 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. There are two small plastic tabs on the bottom Only adjust the Water Regulating Valve after of the Water Distribution Pan. These tabs the Ice Flaker has been producing ice for at should straddle the wing of the Ice Blade to least 10 minutes. prevent it from rotating. Condensate Drain & Sump Drain Outlets Any water or moisture that has formed on the The tube exiting the Water Distribution Pan from the bottom is the Lead Spout. It must Ice Flaker or inside the enclosure will flow out through the Condensate Drain Outlet. always be flowing with water during normal operation and pointing perpendicular to the Water exiting the enclosure during cleaning or evaporator surface. emptying of the Water Sump will do so through the Sump Drain Outlet. Do not plug or cap the bottom Lead Spout. Both of these drains outlets must connect to a floor drain. Make sure they are clear from restrictions and flows freely. Section View of Water Distribution Pan Water level in the Water Distribution Pan ...
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Page 16: 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) 16 ... - Page 17 Evaporator Pressure Setting Model Temperature R‐404A 1000‐RLE 0°F 33 PSI 2000‐RLE ‐5°F 28 PSI 3000‐RLE ‐5°F 28 PSI If EPR fails to regulate pressure properly it must Evaporator Pressure Regulator (EPR) be repaired or replaced. The EPR will hold the suction temperature at the proper level, allowing for minor For Globe Style EPR, adjust top stem. adjustments to be made using the Thermostatic Expansion Valve (TXV). Even though the suction temperature at the Evaporator is correct, the TXV may still be underfeeding or overfeeding. All EPRs are shipped loose and must be field installed. The EPR should ideally be located within 2 feet of the Ice Flaker. To read EPR setting install service manifold at the Pressure Tap of the Evaporator or at the inlet of the EPR. For Angle Style EPR, remove end cap and adjust using a 1/4" hex wrench. To ensure an accurate setting, it is important to set the EPR when the ambient temperature at the Condensing Unit is 10°F below the maximum rated ambient temperature. ...
- Page 18 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. Superheat is not a reliable method of adjusting TXV on Ice Flaker. TXV must be adjusted while TXV Underfeeding visually inspecting the Evaporator’s freezing surface. 2. If the TXV is not underfeeding, close the TXV by 1/4 of a turn and wait 5 To increase the refrigerant feed of the TXV, minutes. rotate stem counterclockwise. 3. Visually inspect the frost pattern of the To decrease the refrigerant feed of the TXV, Evaporator. rotate stem clockwise. TXV Sensing Bulb 4. Repeat steps #2 and #3 until underfeeding can be seen at the very ...
- Page 19 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. The Solenoid Valve should only de‐energize when the Ice Flaker is in Off‐Delay Cycle (p.22) or Overload Condition (p.23). Sight Glass The Sight Glass provides a quick way to visually check that the Ice Flaker is being provided with constant liquid refrigerant and that there is no moisture in the system. There should never be bubbles in the Sight Glass. This indicates a flashing or inconsistent liquid feed. The moisture indicator in the middle of the The left side of the control indicates pressure Sight Glass should always be green. differential for Cut‐Out (compressor off) and the right side indicates pressure for Cut‐In Green – Dry (compressor on). Yellow – Wet R‐404A Fan Cycling Control Diff. / Pres. Cut‐In / LBS. On Dual‐Fan Condensing Units (1000‐RLE & 18 ...
- Page 20 Field Capacity Check 8. Compare the number with the rated The Ice Flaker is a continuous production capacity of the Ice Flaker. Keep in mind machine and makes ice at a steady rate once temperatures outside the rated stabilized. conditions will have an effect on the A Capacity Check confirms the Ice Flaker and capacity. refrigeration settings are correct. 1. Choose an appropriately sized container and weigh it while empty. Container Weight Lbs. 2. Run the Ice Flaker for 10 minutes. 3. Position the container below the opening of the Ice Flaker. 4. Catch the falling ice in the container for exactly 15 minutes. Be sure that the container catches all of the ice. 5. Weigh the ice and the container ...
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Page 21: Electrical Operation
Electrical Operation 1. Level Control Relay (LC1) 5. Power Switch 2. Motor Relay (R1) 6. Ice Flaker Run Indicator Light 3. Control Module (CM) 7. Motor Overload Indicator Light 4. Transformer (T1) 1. Term 1: 24V Input Power 7. Term 7: Solenoid Valve Contact 2. Term 2: 24V Input Power 8. Term 8: Solenoid Valve Contact 3. Term 3: Control Signal 9. Off‐Delay Setting 4. Term 4: Motor Overload Reset 10. Motor Overload Setting 5. Term 5: Motor Overload Switch Leg 11. Overcurrent Condition Indicator Light 6. - Page 22 Level Control Relay (LC1) Normal Operation This relay processes the signal from the Photo Normal Operation begins when the Control Eyes. It shuts the Ice Flaker off when the Ice Bin Module senses voltage at the Control Signal is full to prevent damage caused by ice backing (Term 3). up into the evaporator section. Motor Relay (R1) During Normal Operation voltage is present at This relay provides power to the Drive Motor, Ice Flaker Run Switch Leg (Term 6) and the the Water Pump, and the Solenoid Valve. It Solenoid Valve Contacts (Term 7 & 8) are features a manual override button, which when closed. depressed will engage the relay contacts, even Off‐Delay Cycle when the relay coil is not energized. The Off‐Delay Cycle begins when voltage is Transformer (T1) removed from the Control Signal (Term 3). This provides 24 volt control power to the The length of the Off‐Delay Cycle is determined Control Module, Motor Relay, and indicating by the blue Off‐Delay Setting dial. The lights. increments are in minutes with 1 being the Ice Flaker Run Indicator Light lowest possible setting and 30 being the This is lit green during Normal Operation. highest. Motor Overload Indicator Light During the Off‐Delay Cycle voltage is present at This is lit amber when Ice Flaker is in Overload Ice Flaker Run Switch Leg (Term 6) until the Condition. The Reset Button is located on the time setting has been met. The Solenoid Valve ...
- Page 23 Overload Condition Motor Overload Setting An Overload Condition begins when the The proper adjustment of Motor Overload Overload Sensing Coil reads amperage from the Setting will protect the Ice Flaker and help avoid motor lead passing through it that is higher nuisance service calls. than the Motor Overload Setting. To set the Motor Overload correctly, During an Overload Condition no voltage is 1. Mark the location of the setscrew present at Ice Flaker Run Switch Leg (Term 6), before an adjustment is made, as a the Solenoid Valve Contacts (Term 7 & 8) are point of reference. open, and the Overcurrent Condition Indicator Light is lit red. 2. Place a small flat blade screwdriver in The Motor Overload setting should be adjusted the adjustment screw while the Ice on start‐up and anytime changes are made to Flaker is operating. the Drive Motor or Main Shaft. 3. Gently and slowly turn counterclockwise until Overload Condition Indication Light illuminates. Do not force adjustment screw past bottom stop. ...
- Page 24 Photo Eyes (Level Control) Emitter Receiver Part# E20T104 Part# E20T105 Two Pins ( Blue & Brown ) Three Pins ( Blue, Black, & Brown ) One LED ( Green) Two LEDs ( Green & Amber ) 24 ...
- Page 25 Use a voltmeter to verify 24 volts across blue If this beam in interrupted for more than 15 and brown pins. Alternatively you can check seconds, the Ice Flaker will begin the Off‐Delay terminals #1 and #10 on the Level Control Cycle. This prevents ice from filling into the ice Relay. making area and damaging internal parts. If 24 volts is not present, the Level Control Relay The Ice Flaker will return to Normal Operation when the infrared beam is re‐established, has likely failed and needs to be replaced. provided the Off‐Delay Cycle has completed. Sequence of Operation There are Light‐Emitting Diode (LED) indicators If the Ice Flaker was purchased without an Ice on the rear of both the Emitter & Receiver. Bin the Photo Eyes will be shipped loose and need to be properly mounted by the installing The Emitter has a green LED, which is contractor. Please contact Howe for further illuminated whenever the Ice Flaker has power. information. The Receiver has two LEDs. The green LED is Water or Moisture in Molex Plug always illuminated whenever the Ice Flaker has If the Molex plug for either the Emitter or power. The amber LED is illuminated when it Receiver is wet or has moisture in it, shake “sees” the infrared signal from the Emitter. water off plug and dry properly. During Normal Operation, all LEDs should be lit. Molex plug must be re‐packed with Di‐electric The Level Control Relay (LC1) should open the grease every time it is unplugged to maintain Solenoid Valve, and the Ice Flaker should begin water resistance. making ice. Correct Wiring Arrangement When the infrared beam is blocked, both green ...
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Page 26: Mechanical Operation
Mechanical Operation 1. Ice Deflector 4. Speed Reducer 2. Ice Blade 5. Drive Motor 3. Squeegee 26 ... - Page 27 The 2000‐RLE and 3000‐RLE also feature an Ice Ice Deflector Deflector Scraper. This plastic arm clears any The Ice Deflector prevents ice from dropping excess buildup of ice on the Ice Deflector as it into the water return trough. passes by the Ice Deflector Scraper. The Ice Deflector should never touch the Ice Deflector Scraper or the Bottom Casting. Ice Blade The Ice Blade shatters the ice formed on the Evaporator freezing surface as the Main Shaft rotates. Ice harvesting problems are often caused by improper refrigeration settings. Adjusting the (1000‐RLE) Ice Blade should be a last resort after all other means have been expended. A properly installed Ice Deflector should have the top outer edge positioned outside of the ice The clearance between the outermost tip of the drop zone to ensure all falling ice will hit the Ice Ice Blade and the Evaporator freezing surface Deflector. must be between 0.004” and 0.006”. There should be a minimum 1/8” clearance between the top of the Ice Deflector and the aluminum lip of the Bottom Casting under the Evaporator. There should also be a minimum 1/8” clearance between the outer edge of the Ice Deflector and the Bottom Casting. A set of feeler gauges should be used to determine the distance between the Ice Blade and the Evaporator. ...
- Page 28 Gear Motor (1000‐RLE) The Auxiliary Ice Scrapers located at the top and The Gear Motor is a drive motor and speed bottom (2000‐RLE bottom only) of the Ice Blade reducer combined in one single unit. remove any ice forming in those areas. The clearance of the Auxiliary Ice Scraper should be the same or slightly greater than the Ice Blade. Squeegee The Squeegee wipes excess water from the freezing surface so that the ice is dry upon production. The Squeegee must be in full contact with the evaporator freezing surface. Having a Squeegee not in contact with the freezing surface will create wet ice which causes You should never try to remove the motor or drag on the Ice Blade. This puts greater stress open the housing of the Gear Motor. on the Sleeve Bearings and causes them to wear faster than normal. One motor power lead for the Gear Motor should pass through the Overload Sensing Coil on the Control Module no less than (4) times. The Gear Motor will only fit in the enclosure in The 1000‐RLE does not feature a Squeegee. the orientation shown above. However it has a longer drying time between Ice Blade passes. With normal usage, the Squeegee can wear over time. Worn Squeegees need to be trimmed or replaced. 28 ...
- Page 29 Drive Motor and Speed Reducer (2000‐ Sleeve Bearings RLE & 3000‐RLE) Ice Flakers have two Sleeve Bearings on the The Drive Motor is attached to the Speed Main Shaft located in the Top Casting and the Reducer by (4) mounting screws. There are no Bottom Casting. other screws or pins holding the Drive Motor in Over time, normal usage can cause these place. bearings to wear. Worn bearings can result in ice harvesting problems and even damage to the Evaporator. 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 Drive Motors may provide a good deal of model Ice Flaker. resistance when being removed. There are (2) Howe is proud to offer our Factory Rebuild threaded holes on the face of the Speed Program as an alternative to replacing parts Reducer in which the mounting screws can be such as the Sleeve Bearings in the field. inserted to help push the Drive Motor away. One motor power lead for the Drive Motor should pass through the Overload Sensing Coil on the Control Module (1) time. ...
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Page 30: Start-Up Checklist
Start‐Up Checklist 1. Is the operating water level in the Water Sump correct? (see Float Valve p.14) 2. Is the operating water level in the Water Distribution Pan correct? (see Water Distribution Pan p.14) 3. Is the Stop Valve on Sump Drain connection closed? (see Stop Valve p.14) 4. Is the Suction Temperature at the Evaporator correct? (see Evaporator Pressure Setting p.17) 5. Have you visually inspected the freezing surface of the Evaporator? (see Adjusting Refrigeration to the Ice Flaker p.18) 6. Have you set the Fan Cycling Control (1000‐RLE & 2000‐RLE only)? (see Fan Cycling Control p.19) 7. Have you set the Low Pressure Control on the Condensing Unit? (see Low Pressure Control p.19) 8. Have you run a Field Capacity Check? (see Field Capacity Check p.20) 9. Have you set the Off‐Delay Setting on the Control Module? (see Off‐Delay Setting p.22) 10. Have you set the Motor Overload Setting on the Control Module? (see Motor Overload Setting p.23) 11. Have you verified proper Sequence of Operation by the Photo Eye sensors? (see Sequence of Operation p.25) 12. Have you verified proper rotation by the Gear Motor or Drive Motor? (see Gear Motor (1000‐RLE) p.28) (see Drive Motor and Speed Reducer (2000‐RLE & 3000‐RLE) p.29) ... -
Page 31: Maintenance
Maintenance Preventative Maintenance Schedule Page Every 6 Every 12 Number Months Months Ensure Float Valve is unclogged and 14 • flowing freely Verify correct Sequence of Operation of 25 • Photo Eye sensors Clean and Sanitize Ice Flaker 32 • Replace Water Filter Cartridge 36 • Run a Field Capacity Check 19 • Verify Ice Blade Clearance 27 • Check Squeegee for excessive and 28 ... -
Page 32: 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. Turn the Power Switch “Off” at the Ice Flaker Control Panel. 2. Open Ice Flaker Control Panel and turn Off‐Delay timer knob fully clockwise to 5. Open Ice Flaker Stop Valve to allow 30 minutes run time. water to exit from Water Sump. Afterwards close Stop Valve to prevent loss of solution. 3. Remove all ice from Ice Bin. 6. Prepare approved cleaning solution by following manufacturer’s instructions. 32 ... -
Page 33: 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. 3. Drain solution and rinse thoroughly 7. Pour cleaning solution into Water Sump with fresh water at least twice, to a level just below the side opening. following the technique described in Cleaning Procedure #10. 8. Turn Power Switch “On” for 2‐3 seconds and then “Off” again at Ice Flaker 4. After the Ice Flaker is thoroughly rinsed, Control Panel. This will allow cleaning return to normal operation by opening solution to circulate for 30 minutes. It water supply valve, re‐adjusting Off‐ may require several 30 minute cycles to Delay Setting, and restoring fully clean the Ice Flaker. refrigeration by turning the Power Switch back to “On”. 9. -
Page 34: Lubrication
Lubrication Gear Motor Lubrication Use caution to ensure the bearings is not over‐ The Gear Motor is permanently lubricated and greased. does not normally require re‐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. Proper oil level is maintained to the Allen head setscrew on the horizontal center line of the Over‐greasing may “pop” the seal out of its Speed Reducer. Oil should drain out when normal position. setscrew is removed. If over‐greased and the seal is popped out of Add oil through top Allen head screw opening position, the excess grease will need to be until oil seeps out of centered screw opening. removed prior to re‐installing the seal. Do not overfill. If seal is damaged due to over‐greasing it may need to be replaced. Sleeve Bearing Lubrication The bearings should be greased annually using USDA approved food grade edible grease. Typically, only one squirt of the grease gun is required or until you feel resistance on the pump. ... -
Page 35: 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. There are three primary categories of contaminants that damage and cause the Ice Flaker to operate inefficiently. They are listed here in order of importance with regard to impact. The effects of scale and sediment can be very destructive to the Ice Flaker. 1. Scale 2. Sediment Chlorine 3. Chlorine Chlorine is the most common disinfectant used to kill pathogenic organisms in order to make Scale our water safe to drink. However, residual free Scale or fouling is the accumulation of chlorine in water can contribute to pitting, rust unwanted material on solid surfaces to the and corrosion of stainless steel. detriment of function. Scale is primarily made up of calcium and magnesium hardness compounds. It’s estimated that scale is responsible for 70% of unscheduled maintenance, inefficient operation, and down time. Scale forms on wetted surfaces, accumulates in ... - Page 36 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. They reduce chlorine to less than 2 PPM to guard against corrosion and improve ice quality. Water Filter Cartridge Replacement 1. Turn off water filtration system by closing ball valve. 2. Press the red button to release pressure. 3. Remove housing(s) – use filter wrench if necessary. Clean housings with warm water. If desired, disinfect housings using 1/2 teaspoon of household bleach in a bowl of water. Let stand 5 minutes, and then discard. 4. Insert new cartridges into filter housings. Match cartridge model numbers to model numbers on bracket. 5. Make certain the O‐ring is properly positioned and reinstall filter housing (hand tighten only). 6. Slightly open the inlet ball valve; push the red pressure relief button to release ...
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Page 37: Troubleshooting
Troubleshooting (Note: All wire colors are subject to change) Problem Possible Cause Possible Solution 1. Unplugged or defective Photo Eye(s). 1. Ensure Molex plugs are properly and securely connected. Place a wire jumper between terminals #10 (blue) and #11(black) at the Level Control Relay (LC1). If Ice Flaker starts, Photo Eyes may be defective and need to be replaced. 2. Defective Level Control Relay (LC1). 2. Place a wire jumper between terminals #5 (red) and #6 (red) at the Level Control Relay (LC1). If Ice Flaker starts, Level Control Relay (LC1) may be defective and need to be replaced. 3. No control power from Transformer (T1). 3. Check voltage across Term 1 (purple) and Term 2 (yellow/orange) at Control Ice Flaker will not run Module (CM). If 24 VAC not present, Transformer (T1) may be defective and need to be replaced. 4. Open switch or loose wiring. 4. Place a wire jumper between Term 2 (yellow/orange) and Term 3 (red) at Control Module (CM). If Ice Flaker starts, trace voltage from Term 3. Check all wire terminals and tighten as necessary. 5. Defective Control Module (CM). 5. Place a wire jumper between Term 2 (yellow/orange) and Term 3 (red) at Control Module (CM). If Ice Flaker does not start, Control Module (CM) may be defective and need to be replaced. 1. Defective Emitter Photo Eye. 1. - Page 38 4. Check all wire terminals and tighten as necessary. 1. TXV is underfeeding. 1. Adjust refrigeration to Ice Flaker. Ice does not harvest 2. System is short of refrigerant. 2. Check for bubbles in the Sight Glass. If present, charge system as needed. at the bottom of Evaporator 3. Improper location of TXV sensing bulb. 3. Relocated bulb to 4:30 clock position as originally set by factory. 1. Sleeve Bearings are worn. 1. Remove Speed Reducer or Gear Motor and check for “play” in Sleeve Bearings. Ice does not harvest on one side Replace if worn. or angular section of Evaporator 2. Ice Blade clearance is too high. 2. Adjust Ice Blade clearance to proper setting. 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 38 ...
- Page 39 2. Water from Side Spouts or Lead Spout is 2. Clean spouts of any debris or blockages. Make sure all spouts are perpendicular to not reaching freezing surface of and within reasonable distance from surface of Evaporator. Evaporator. Ice freezes together 3. Water is “ramping” off rings of ice formed 3. Adjust refrigeration to the Ice Flaker. in the Ice Bin on Evaporator. 4. Ice Bin is not draining properly. 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. storage time. 1. Lack of refrigerant. 1. Check for leaks and repair. Add refrigerant. Condensing Unit is in 2. Insufficient water supply. 2. Replace Water Filter. Check for clogged tubes or valves. Low Suction Pressure Pump Down 3. Refrigeration line blockage. 3. Check filter drier, TXV, EPR and replace as necessary. 1. Lack of refrigerant. ...
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Page 40: Appendix
Appendix Cut View – 1000‐RLE 40 ... - Page 41 Cut View – 2000‐RLE & 3000‐RLE 41 ...
- Page 42 Assembly Drawing – 1000‐RLE Ice Flaker & CP750 Mobile Express Ice Bin 42 ...
- Page 43 Assembly Drawing – 2000‐RLE Ice Flaker & CP1500 Mobile Express Ice Bin 43 ...
- Page 44 Assembly Drawing – 3000‐RLE Ice Flaker & CP2500 Mobile Express Ice Bin 44 ...
- Page 45 Wiring Diagram – Ice Flaker 45 ...
- Page 46 Wiring Diagram – 230/3/60 Air‐Cooled Condensing Unit supplied by Howe Corporation 46 ...
- Page 47 Installation & Service Manual For Use with Remote Single Condensing Unit (RLE) Rev. Date: 08‐2014 ...
- Page 48 Parts List (1000‐RLE) Non‐Replaceable Parts Item No. Description Part No. ...
- Page 49 1 Top Casting F5A4 2 Bottom Casting F5B10 3 Evaporator F5C13 Replacement Parts Item No. Description Includes Part No. Coupling Hub 4 Coupling Hub Kit F5A6‐KT Hardware 5 Main Shaft F5D2 6 Ice Blade F5E1 Ice Blade Adjustment Gauge Kit E10E15 Set of 7 Gauges 7 Auxiliary Ice Scraper F5E2 8 Ice Deflector ...
- Page 50 Parts List (Control Panel & Miscellaneous) Replacement Parts Item No. Description Part No. 1 Ice Level Control Relay E20T68 2 Motor Relay F5T2 3 Control Module E20T48 4 Transformer E20T31 5 Power Switch E20T24 6 Ice Faker Run Indicator Light LGX‐24 7 Motor Overload Indicator Light LRN‐24 Overload Reset Button (N.O.) E20T23 Ice Level Control Emitter E20T104 Ice Level Control Receiver E20T105 Replacement Filter Cartridge E10H56 Replacement O‐Ring ...
- Page 51 Parts List (2000‐RLE & 3000‐RLE) ...
- Page 52 Non‐Replaceable Parts Part No. Item No. Description 2000‐RLE 3000‐RLE 1 Top Casting E10A2 2 Bottom Casting E10B2 3 Evaporator E10C1 E15C1 Replacement Parts Part No. Item No. Description Includes 2000‐RLE 3000‐RLE 4 Handhole Cover E10A5 5 Bottom Bearing Cover E10B8 6 Main Shaft E10D2 E15D2 7 Ice Blade ...
- Page 53 Replacement Parts Part No. Item No. Description Includes 2000‐RLE 3000‐RLE Drive Motor; 220/1/50 ODP E20M10 Speed Reducer; 60 hz E10R5 E10R6 28 Speed Reducer, 50 hz E10R5 29 Flex Coupling E10N4 Heater Elements HT150X240‐037X50 3 Required Speed Reducer Oil (Synthetic) SR‐OIL‐SYN R‐404A / R‐507 Balance Port TXV TXV E10V25‐KT E15V7‐KT Strainer Valve TXV R‐404A / R‐507 Standard TXV Valve ...
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Questions and answers
Just cleaned unit, it’s back on but water pump is cycling and lots of water instead of ice
The Howe 1000-RLE water pump may be cycling and producing water instead of ice because it is in a cleaning or sanitizing mode. During these procedures, the water pump and drive motor are turned on to circulate cleaning or sanitizing solutions through the system for a set period (e.g., 20 or 30 minutes). In this mode, the refrigeration is not active, so no ice is produced, only water circulation occurs.
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