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Howe Rapid Freeze, Руководство по обслуживанию

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11  Electric Control Panel

 

 

 

 

27

 

THIS SECTION APPLIES ONLY TO CONTROL PANELS SUPPLIED BY HOWE, ORDERED AS 
AN OPTION WITH THE MACHINES (Bare Machines). 
  
Components & functions 
 
 
 Panel 

Layout 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 

 

1) Motor 

Contactor 

Provides power to the drive motor & water pump.  Energized during freezing and pump down cycle, 
then timed off for shut down.  Auxiliary contact provides power to the liquid solenoid valve when 
contactor is energized. 
 
2) Control 

Transformer 

Provides 24 Volt control power to control panel components, Control module, motor contactor, and 
indicating lights. 

 

3) 

Control Module (E20T48) 

Main control processor, incorporates motor overload, operating circuit, off- delay circuit.  Controls 

motor contactor and solenoid valve power. 

 

4) 

Photo Eye power Module 

processes signals from electronic eye level control, has built in time delays.  Shuts machine off  when 

Содержание Rapid Freeze

Страница 1: ...arts catalog Selective Purpose Flake Ice Machines 2000 20000 lb Seawater Models Howe Corporation 1650 N Elston Ave Chicago IL 60622 1530 www howecorp com E Mail howeinfo howecorp com TECHNICAL ASSISTA...

Страница 2: ...information in this manual will be of use to owners of older model machines The reader is cautioned that use of this manual with older equipment is at the user s risk Howe Corporation makes no warran...

Страница 3: ...4 Installation On Ice Bin 5 Recommended Installation Method On Ice Bin Exhibit 2 5 6 Water Supply Filter Connections Exhibit 3 7 Refrigerant Charging 8 6 SEAWATER MODEL INSTALLATION Assembly Drawing...

Страница 4: ...onents Functions Exhibit 30 27 29 E20T48 Control Module 30 Standard Control Panel Exhibit 31 31 12 CONTROL PANEL WIRING DIAGRAMS 230 1 60 Wiring 32 460 3 60 Wiring 33 35 220 1 50 Wiring 36 380 3 50 Wi...

Страница 5: ...5 10 ton models Exhibit 38 54 Ice Deflector Scraper Exhibit 39 55 Squeegee Squeegee Wrapper 55 56 Water Distribution Tubes 56 Drive Motor 56 57 Speed Reducer 57 Flexible Coupling 57 Speed Reducer Dri...

Страница 6: ......

Страница 7: ...in this manual is intended for use by individuals possessing adequate backgrounds of electrical refrigeration and mechanical experience Any attempt to repair or make alterations to this equipment may...

Страница 8: ...t They Mean Please read and understand this manual prior to installing or operating this Rapid Freeze Ice Flaker You must be completely familiar with the start up operation and service of this flaker...

Страница 9: ...he carton it is necessary to keep the original shipping container so the carrier s agent can investigate the damage claim thoroughly If a repair is necessary for the Rapid Freeze machine you must firs...

Страница 10: ...erature may drop below freezing CAUTION Optimum surrounding air temperature range 60 F 15 C to 95 F 35 C Minimum air temperature without heater 50 F 10 C Minimum air temperature with heater 45 F 7 C M...

Страница 11: ...top of the10 000 15 000 and 20 000 pound capacity ice flaker for removal of the speed reducer and sufficient space around the unit approximately 3 feet for inspection and service Recommended Installat...

Страница 12: ...Repeat steps 5 6 on the other side Step 8 With the flaker sitting on one 1 block under each corner repeat steps 5 6 7 removing the remaining blocks Drip pan flanges MAY bend slightly Step 9 Straighte...

Страница 13: ...r valve water inlet connection located on water sump Refer to the engineering sheet for the line size connection from the ice flaker sump to the water supply line If water supply has silt or sand in i...

Страница 14: ...disconnecting the cylinder Loosen the union in the refrigerant line SLOWLY and CAREFULLY to relieve refrigerant pressure in the charging hose WARNING Never open charging valve allowing refrigerant to...

Страница 15: ...urs 3 Break vacuum with refrigerant and evacuate again 4 Repeat step 3 This is called triple evacuation It ensures that all air and moisture has been removed from the system Failure to do so may resul...

Страница 16: ...6 SEAWATER MODEL INSTALLATION 10 ASSEMBLY DRAWING 11ESS 21ESS...

Страница 17: ...6 SEAWATER MODEL INSTALLATION 11 ASSEMBLY DRAWING 31ES 31ESS...

Страница 18: ...6 SEAWATER MODEL INSTALLATION 12 ASSEMBLY DRAWING 51ES 51ESS...

Страница 19: ...6 SEAWATER MODEL INSTALLATION 13 ASSEMBLY DRAWING 11EFS 21EFS...

Страница 20: ...6 SEAWATER MODEL INSTALLATION 14 ASSEMBLY DRAWING 51EFS...

Страница 21: ...6 SEAWATER MODEL INSTALLATION 15 ASSEMBLY DRAWING 10ESS 20ESS...

Страница 22: ...6 SEAWATER MODEL INSTALLATION 16 ASSEMBLY DRAWING 30ES 30ESS...

Страница 23: ...6 SEAWATER MODEL INSTALLATION 17 ASSEMBLY DRAWING 50ES 50ESS...

Страница 24: ...edicated condensing unit wire CR3 relay in condensing unit control panel with a normally open contact wired back to the flaker panel between terminal Line AA and terminal Line AB See electrical diagra...

Страница 25: ...a visible indication that flashing is occurring It may not be possible to adjust the thermostatic expansion valve properly when this condition exists Note Flashing may also occur if the liquid line is...

Страница 26: ...ith a full bin will cause the ice deflector to bend or break as it churns the ice In extreme cases it may result in damage to the speed reducer and or the electric drive motor and flexible coupling Th...

Страница 27: ...d to operate in ambient temperatures between 50 F 10 C and 100 F 38 C When operating in ambient temperatures between 50 F 10 C and 45 F 7 C rib heaters MUST be installed on the ice flaker Under NO cir...

Страница 28: ...9 How The Rapid Freeze Flaker Operates 22 ICE FLAKER CUTAWAY DRAWING EXHIBIT 26...

Страница 29: ...d of a USDA approved material which is resilient enough to provide years of service without replacement It assures that 100 of the daily ice production is completely dry crisp flake ice which contains...

Страница 30: ...ff switch is in the Off position then turn on the main disconnect 3 ________ Check voltage between line 1 and line 2 verify that it is within nameplate ratings 4 ________ Turn the On Off switch ON Sol...

Страница 31: ...estricting valves 11 ________ If suction temperature is between 5 F 20 5 C to 10 F 23 3 C For freshwater 30 F 34 4 C For seawater and there are no bubbles in the sight glass and ice is not being froze...

Страница 32: ...til the off delay cycle opens Field Adjustable between 1 30 minutes normally set at approximately 5 10 minutes 15 ________ Electronic overload set point is factory set to trip within seconds when the...

Страница 33: ...wn Auxiliary contact provides power to the liquid solenoid valve when contactor is energized 2 Control Transformer Provides 24 Volt control power to control panel components Control module motor conta...

Страница 34: ...l panel 9 On Off Switch Terminals Terminals for installing a remote on off switch or auxiliary control such as a 7 day clock timer or remote modem for grocery store applications These auxiliary contro...

Страница 35: ...pressure switch is manually reset 3 High Discharge Pressure Light Red indicating light is on when high discharge pressure switch opens shutting down the compressor Light will stay on until pressure sw...

Страница 36: ...ion stays on until overload is manually reset Red LED on control module indicates overload condition This LED will glow prior to actual shut down of drive contactor Terminal 6 Ice flaker contactor out...

Страница 37: ...11 Electric Control Panel 31 Control panel door layout E20T40 RL Exhibit 31 Control Panel Door Layout E20T40 SCA...

Страница 38: ...12 Control Panel Wiring Diagrams 32 Control Panel Schematic E20T40 RL...

Страница 39: ...12 Control Panel Wiring Diagrams 33 460 3 60 WIRING E20T47...

Страница 40: ...12 Control Panel Wiring Diagrams 34 460 3 60 Control Panel Schematic E50U8 RL Large Capacity Single Circuit...

Страница 41: ...12 Control Panel Wiring Diagrams 35 460 3 60 Control Panel Schematic E50U9 RL Large Capacity Dual Circuit...

Страница 42: ...12 Control Panel Wiring Diagrams 36 220 1 50 Control Panel Schematic E20T40 RL 50...

Страница 43: ...12 Control Panel Wiring Diagrams 37 380 3 50 Control Panel Schematic E20T60...

Страница 44: ...12 Control Panel Wiring Diagrams 38 380 3 50 Control Panel Schematic E50U14 RL Large Capacity Single Circuit...

Страница 45: ...often as every 2 months whereas in normal or soft water areas twice a year may be sufficient When cleaning is necessary proceed as follows 1 Turn off refrigeration compressor If flaker is connected to...

Страница 46: ...described in No 8 12 After ice flaker is thoroughly rinsed return machine to normal operation by opening water supply valve and restoring refrigeration Water Distribution Tubes Water distribution tub...

Страница 47: ...ting The speed reducer must be lubricated greased every six months with a standard bearing grease not food grade Oil Change The oil in a new speed reducer should be changed at the end of 250 hours of...

Страница 48: ...ected prior to any service call for a malfunction of the machine Preventative Maintenance Schedule 3 month 6 month 9 month 12 month Clean ice machine as required Grease Top Bottom Bearings Check if fl...

Страница 49: ...rminals 4 and 6 on the module base If machine starts then module is defective Replace module Ice maker will not start and signal light on power module IS flickering quickly Remote optional on off swit...

Страница 50: ...r open wire in circuit 0 VAC present module output 6 is OK check wiring or contactor coil Remove wires from 7 8 set meter to ohms and check for continuity between terminals 7 8 while module is energiz...

Страница 51: ...too high because a Improper amount of insulation on bin Re insulate or replace bin b Bin not sealed properly Reseal or replace bin Ice flakes frozen together into a hard block of ice in storage bin c...

Страница 52: ...to old style carbon steel blades only Replace dull carbon steel ice blade with new stainless steel blade 3 Main bearings worn Replace worn bearings inspect and repair replace shaft if worn Ice freeze...

Страница 53: ...pply line of proper size Water supply less than 20 PSIG Consult factory I Ice flaker makes ice intermittently and compressor short cycles c water filters clogged Replace filters every 6 months or soon...

Страница 54: ...ust ice blade clearances see section 11 service adjustment Worn main bearings and or shaft Replace bearings and or shaft if worn see section 11 service adjustment Too much ice accumulation in bottom w...

Страница 55: ...eed reducer Repair or replace speed reducer Dull carbon steel ice blade Replace blade with new stainless steel ice blade Motor amps too high reach a peak reading at a certain position on the drum ce b...

Страница 56: ...h speed oil seal in speed reducer Replace leaking high speed oil seals Oil leaking evident on top of flexible coupling Worn slow speed oil seal in speed reducer Replace leaking slow speed oil seal Spe...

Страница 57: ...o it will trip upon overload condition before damaging gearbox motor or coupling Repair speed reducer peed Reducer output shaft broken motor burnt out or off on overload Operating ice flaker for an ex...

Страница 58: ...ation of this information nor can it assume any liability in onnection with its use IMPORTANT SAFETY NOTICE DANGER he control panel on this ice flaker may be powered by TWO SEPARATE power sources Disc...

Страница 59: ...n the top casting Remove 2 or 3 water distribution tubes for easier access Reaching down into the freezing chamber loosen and remove the two 1 4 bolts holding the existing ice deflector in place Remov...

Страница 60: ...hing UP from the bin into the freezing chamber loosen and remove the two 5 16 bolts holding the existing ice deflector brackets in place Remove the damaged ice deflector and or brackets Assemble the n...

Страница 61: ...2 or 3 water distribution tubes for easier access Reaching down into the freezing chamber loosen and remove the two 5 16 bolts holding the existing squeegee squeegee wrapper in place Remove the squeeg...

Страница 62: ...int of least clearance accurately 2 With the ice blade rotated to the point of least clearance set gap between the ice blade and evaporator surface to between 004 and 006 at the top and bottom of the...

Страница 63: ...t main power to the ice flaker Refer to exhibit 30 Remove the drive motor as described above remove 4 mounting bolts attaching the gearbox to the top aluminum casting The gearbox can then be lifted st...

Страница 64: ...15 Service Adjustment 58 EXHIBIT 40...

Страница 65: ...ift pin or properly sized wood block Note To avoid distortion of casting it should be supported near the bearing area and not on the outer edge 12 Drive new bearing into position Then press the new oi...

Страница 66: ...the shaft it is kept in place with only a keyway there is no set screw It will slide freely but rotate with the shaft 7 Press the new bearing into place it should be centered in the retainer 8 The new...

Страница 67: ...ew cables to insure they are secured to avoid accidental damage REPLACEMENT ADJUSTMENT OF WATER FLOAT VALVE Turn off main power to ice flaker Shut off the water supply to the ice flaker and drain the...

Страница 68: ...e if it was overfeeding counterclockwise to open the valve if the evaporator was not harvesting ice on its entire length Wait 5 10 minutes between each adjustment to allow the valve to stabilize Repea...

Страница 69: ...lve and remove the old valve Install the new valve and tighten the flare nuts or re solder CAUTION ARROW ON THE SOLENOID VALVE MUST POINT IN DIRECTION OF FLOW TOWARDS ICE FLAKER CAUTION Using a high q...

Страница 70: ...for 5 10 ton ice flaker Replacement parts for 5 10 ton ice machines 5 6 Replacement parts for electric control panel misc Accessories Replacement Expansion Valves Please have model number and serial n...

Страница 71: ...SELECTIVE PURPOSE Manual Page 65 Models 2000 10EA 10EAR 11ES 11ESS 3000 15EA 15EAR 16ES 16ESS 4000 20EA 20EAR 21ES 21ESS 6000 30EA 30EAR 31ES 31ESS ICE FLAKERS CROSS SECTION...

Страница 72: ...9 7 E30H8 7 Water distribution side spout fitting For use on plastic distribution pan E10H18 P 6 E20H39 P 6 E20H39 P 7 N A 36a Water Distribution pan assembly includes dist Tubes fittings Plastic Pan...

Страница 73: ...or 50cy 926MDVD 450 1 E20R3 75a Handhole cover bolt down E10A5 E20A6 Replacement rib heater element 3 HT150 240 RLE Speed Reducer oil natural SR OIL Speed Reducer oil synthetic SR OIL SYN 1 To help de...

Страница 74: ...SELECTIVE PURPOSE Manual Page 68 Models 51E 50EA 50EAR 76E 1 76E 2 75EA 75EAR 101E 2 101E 2 100EA 100EAR FRESHWATER ICE FLAKERS CROSS SECTION...

Страница 75: ...SELECTIVE PURPOSE Manual Page 69...

Страница 76: ...25 Top main bearing retainer E50K3 25a Top bearing replacement kit includes bearing 2 seals shaft sleeve E50K10 26 Bottom main bearing retainer E50K4 26a Bottom bearing replacement kit includes bearin...

Страница 77: ...se Off delay timer timer base 3 amp fuse 600V 2 amp fuse 600 V 2 Amp fuse 250V Fuse Holder E20T54 E20T72 E20T74 E20T62 E20T62 E20T46 5V012 5V013 CCMR 3 CCMR 2 KLDR 2 E20T52 Photo eye ice level control...

Страница 78: ...mperature ICE FLAKER MODEL No Units 50 F 10 C 60 F 15 6 C 70 F 21 1 C 80 F 26 7 C BTU hr 14 000 15 000 16 000 17 000 10ES 11ES 11ESS Kcal hr 3 530 3 780 4 030 4 285 BTU hr 21 000 22 500 24 000 25 500...

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