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Solenoid Valve 

The Solenoid Valve controls the flow of liquid 
refrigerant to the Evaporator.  

The Solenoid Valve should energize 
immediately upon starting the Ice Flaker. 

The solenoid should only de-energize when the 
Ice Flaker is in Off-Delay Cycle (p. 17) or 
Overload Condition (p. 18). 

Electronic Valves 

CO

systems feature two step motor operated 

valves.  Each valve has its own standalone 
controller. The controllers are located in a 
control panel mounted to the upper left hand 
corner of the flaker enclosure frame. The 
controllers come factory set for the 
recommended settings, therefore no 
adjustment should be required 

The Electronic Expansion Valve (EEV) controls 
the flow of liquid refrigerant into the 
evaporator. 

The Electronic Evaporator Pressure Regulator 
(EEPR) valve will hold the suction temperature 
at the proper level. 

For more information on the controller settings, 
view the section under Electrical Operation. 

Internal Pressure Relief Valves 

The Internal Pressure Relief Valves will relieve 
any excess pressure from the evaporator to the 
rack. 

 

 

 

 

Field Capacity Check 

The Ice Flaker is a continuous production 
machine and makes ice at a steady rate once 
stabilized. 

A Capacity Check confirms the Ice Flaker and 
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 
together in pounds using an accurate 
scale.  Do not drain before weighing. 

Measured Weight   

Lbs. 

 

6.

 

Subtract the weight of the container. 

Measured Weight   

(from #5) 

- Container Weight  - 

(from #1)

 

= Calculated Weight  = 

Lbs. 

 

7.

 

Calculate the capacity by multiplying 
the calculated weight by 96. 

Calculated Weight   

(from #6)

 

x 96 

x 96   

= Capacity  = 

Lbs. per 

24 hrs. 

 

8.

 

Compare the number with the rated 
capacity of the Ice Flaker.  Keep in mind 
temperatures outside the rated 
conditions will have an effect on the 
capacity. 

Содержание HoweIce Rapid Freeze 4000-RL-CO 2DX

Страница 1: ...1 773 235 0269 1650 North Elston Avenue Website www howecorp com Chicago IL 60642 1585 Email howeinfo howecorp com Rapid Freeze Ice Flaker Installation Service Manual For Use with Parallel Compressor...

Страница 2: ...ts 7 FIELD INSTALLATION 8 Safety Information and Guidelines 8 Inspection 8 Piping 8 Field Wiring 9 Leak Testing 9 Evacuation 9 Installation Checklist 10 START UP AND OPERATION 11 Water Operation 11 Re...

Страница 3: ...45 F 7 C to 90 F 32 C Minimum Water Supply Temp Maximum Water Supply Temp 45 F 7 C 90 F 32 C The cold water supply pressure must be within a 20 PSIG 140 kPa to 60 PSIG 410 kPa range Minimum Water Pre...

Страница 4: ...r conditions A dedicated 1 2 ODS copper cold water supply should be located within 4 feet of the Ice Flaker complete with hand shut off valve A 3 8 OD copper tube should connect the field installed sh...

Страница 5: ...n a liquid line branch feeding the Ice Flaker it must be a type which allows backwards flow to prevent liquid trapping between the valve and the Ice Flaker The Ice Flaker has its own liquid line solen...

Страница 6: ...6 Engineering Guidelines Figure 1...

Страница 7: ...in the enclosure Installation specifications should require all refrigerant piping should be joined with a suitable silver brazing alloy while purging nitrogen through the piping to prevent copper oxi...

Страница 8: ...factory However foreign matter may enter the system by way of the piping to the RPCP Therefore care must be used during installation of the piping to prevent entrance of foreign matter Install all ref...

Страница 9: ...e compressor while it is in a vacuum A good deep vacuum pump should be connected to both the low and high side evacuation valves with copper tube or high vacuum hoses 1 4 ID minimum If the compressor...

Страница 10: ...ly 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 drain see Drain Water Piping...

Страница 11: ...t Up and Operation Water Operation 1 Water Inlet Connection 2 Float Valve 3 Water Pump 4 Water Regulating Valve 5 Water Distribution Pan Side Spout 6 Sump Connections 7 Stop Valve 8 Condensate Drain O...

Страница 12: ...end of the Float Valve Rotate clockwise to raise the water level and counterclockwise to lower the water level Water Pump The Water Pump drives the water in a continuous flow through the system The Wa...

Страница 13: ...level in the Water Distribution Pan should be about halfway full The Side Spouts should never be starved of water Water Regulating Valve Adjust the water level in the Water Distribution Pan by openin...

Страница 14: ...Up Operation Refrigerant Operation Piping insulation not shown 1 Solenoid Valve 2 Electronic Expansion Valve EEV 3 Evaporator 4 Pressure Transducer 5 Evaporator Pressure Regulator EEPR 6 Pressure Reli...

Страница 15: ...al Pressure Relief Valves The Internal Pressure Relief Valves will relieve any excess pressure from the evaporator to the rack Field Capacity Check The Ice Flaker is a continuous production machine an...

Страница 16: ...r Overload Indicator Light 1 Term 1 24V Input Power 2 Term 2 24V Input Power 3 Term 3 Control Signal 4 Term 4 Motor Overload Reset 5 Term 5 Motor Overload Switch Leg 6 Term 6 Ice Flaker Run Switch Leg...

Страница 17: ...ng light It operates in one of three main modes Normal Operation Off Delay Cycle Overload Condition Normal Operation Normal Operation begins when the Control Module senses voltage at the Control Signa...

Страница 18: ...anges are made to the Drive Motor or Main Shaft Motor Overload Setting The proper adjustment of Motor Overload Setting will protect the Ice Flaker and help avoid nuisance service calls To set the Moto...

Страница 19: ...Start Up Operation 19 Photo Eyes Level Control Emitter Part E20T104 Two Pins Blue Brown One LED Green Receiver Part E20T105 Three Pins Blue Black Brown Two LEDs Green Amber...

Страница 20: ...wires connected Correct Voltage With Level Control Relay plugged in and power to Ice Flaker on unplug Emitter and Receiver Use a voltmeter to verify 24 volts across blue and brown pins Alternatively y...

Страница 21: ...Application EPr EPr PCAL Pressure Calibration Offset 0 0 Prng Pressure Sensor Range 500 500 StEP Valve Steps 2500 2500 u_HI Maximum Valve Position 100 100 u_Lo Minimum Valve Position 5 5 PSiH Pressure...

Страница 22: ...SUPS Supermarket Mode OFF OFF dbnd Superheat Control Deadband 2 2 P Proportional Coefficient 40 40 I Integral Coefficient 25 25 d Derivative Coefficient 5 5 StEP Valve Type 2500 2500 SPos Manual Valve...

Страница 23: ...Start Up Operation 23 Mechanical Operation 1 Ice Deflector 2 Ice Blade 3 Squeegee 4 Speed Reducer 5 Drive Motor...

Страница 24: ...r Scraper This plastic arm clears any excess buildup of ice on the Ice Deflector as it passes by the Ice Deflector Scraper The Ice Deflector should never touch the Ice Deflector Scraper or the Bottom...

Страница 25: ...ice which causes drag on the Ice Blade This puts greater stress on the Sleeve Bearings and causes them to wear faster than normal The 1000 RLE does not feature a Squeegee However it has a longer dryin...

Страница 26: ...l Module 1 time The Drive Motor and Speed Reducer will only fit in the enclosure in the orientation shown above Sleeve Bearings Ice Flakers have two Sleeve Bearings on the Main Shaft located in the To...

Страница 27: ...y Check see Field Capacity Check p 15 5 Have you set the Off Delay Setting on the Control Module see Off Delay Setting p 17 6 Have you set the Motor Overload Setting on the Control Module see Motor Ov...

Страница 28: ...31 Ensure Float Valve is unclogged and flowing freely 12 Verify correct Sequence of Operation of Photo Eye sensors 20 Clean and Sanitize Ice Flaker 29 Replace Water Filter Cartridge 33 Run a Field Ca...

Страница 29: ...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 30 minutes run time 3 Remove all ice from Ice Bin 4 Close wat...

Страница 30: ...h water until all cleaning solution is flushed out 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 operat...

Страница 31: ...ducer Oil should drain out when setscrew is removed Add oil through top Allen head screw opening until oil seeps out of centered screw opening Do not overfill Sleeve Bearing Lubrication The bearings s...

Страница 32: ...down time Scale forms on wetted surfaces accumulates in tubing and fittings and interferes with operation Sediment The formation of scale from dissolved minerals is made worse by sediment Sediment is...

Страница 33: ...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 bl...

Страница 34: ...Ice Bin is full 1 Defective Emitter Photo Eye 1 Unplug Emitter Photo Eye and wait longer than Off Delay setting If Ice Flaker stops Emitter Photo Eye may be defective and need to be replaced 2 Defecti...

Страница 35: ...orrespondence with the nameplate 7 Loose wiring 7 Check all wire terminals and tighten as necessary Water Pump will not run 1 Defective Control Module CM 1 Verify 24 VAC present across Term 1 purple a...

Страница 36: ...tside mandatory range 3 Adjust ambient temperature to between 50 F and 100 F In unable to adjust relocate the Ice Flaker For temperatures below range contact Howe about Low Ambient Kit Ice freezes tog...

Страница 37: ...Appendix 37 Appendix Cut View 1000 RLE...

Страница 38: ...38 Appendix Cut View 2000 RLE...

Страница 39: ...Appendix 39 Assembly Drawing 1000 RLE Ice Flaker CP750 Mobile Express Ice Bin...

Страница 40: ...40 Appendix Assembly Drawing 2000 RLE Ice Flaker CP1500 Mobile Express Ice Bin...

Страница 41: ...Appendix 41 Wiring Diagram Ice Flaker Main Control Panel...

Страница 42: ...42 Appendix Wiring Diagram CO2 EEV EEPR Control Panel...

Страница 43: ...Installation Service Manual For Use with Parallel Compressor Rack CO2DX RLE Revision Date Mar 20...

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