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HOBART 2912 SLICER SERVICE MANUAL

1. HOBART SERVICE MANUAL SLICER MODELS 2612 ML 104613 MANUAL 2712 ML 104718 AUTOMATIC 2812 ML 104615 MANUAL 2912 ML 104713 AUTOMATIC e me 1191 2736 MODEL 2912 SHOWN NOTICE This Manual is prepared for the use of trained Hobart Service Technicians and should not be used by those not properly qualified If you have attended a Hobart Service School for this product you may be qualified to perform all the procedures described in this manual This manual is not intended to be all encompassing If you have not attended a Hobart Service School for this product you should read in its entirety the repair procedure you wish to perform to determine if you have the necessary tools instruments and skills required to perform the procedure Procedures for which you do not have the necessary tools instruments and skills should be performed by a trained Hobart Service Technician Reproduction or other use of this Manual without the express written consent of Hobart Corporation is prohibited A product of HOBART CORPORATION TROY OHIO 45374 Form 24569 02 98 Supsds F 24569 7 96 and F 24581 2 97 and TSB 967 8 96 SLICER GENERAL TABLE OF CONTENTS GENERAL 2 a ee caer om ai anh a o e dd 4 INTRODUCTION sind Besse oat tota a tl de dde a dl ri ci 4 os A A A A A ee ee 4 EOS a il al a ce 4 GeMeral aii ripio aid e ici o dies de EE 4 SPECIFICATION Gis sio supiste ds ies deb eds aaa andas 8 AS ae 4 al 216
2. 51 SLICER TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Knife motor running or starting at less Motor lead wires in wrong orientation at start switch than rated RPM slow Inoperative capacitor and or start switch 2712 and 2912 automatic motor 2MTR Automatic manual engage switch 2S inoperative will not start knife motor running 2712 relay 1CR malfunction 2912 relay 2CR malfunction Motor control PC board malfunction Motor brushes inoperative Automatic motor 2MTR inoperative 2712 and 2912 automatic motor 2MTR Automatic engage pawl missing running no carriage movement _Pawl spring broken Auto engage ramp on automatic carrier assembly worn Automatic drive linkage malfunction Form 24569 02 98 Supsds F 24569 7 96 and F 24581 2 97 and TSB 967 8 96 Printed in U S A
3. the motor shaft even with the surface of the motor crank link assembly 8 Check unit for proper operation 2712 AND 2912 CARRIAGE SPEED SWITCH ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 7 2 Disconnect switch assembly wires 3 Pull Knob from switch 4 Unscrew nut and pull switch from base 5 Reassemble in reverse order 6 Check unit for proper operation 2712 AND 2912 AUTOMATIC CARRIER SHAFT WARNING UNPLUG UNIT BEFORE SERVICEING 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 6 2 Remove nut on carrier shaft pin A Unscrew pin from shaft i 7 o h s tu gt X i a gt gt el f g i y CARRIER SHAFT PIN 1111 2652 3 Remove retaining rings holding carrier link assembly to automatic carrier swivel and main link and pull link off AUTOMATIC CARRIER SHAFT 4 Remove plug in base A Remove retaining ring on shaft NOTE Before removing the automatic manual lock from the shaft observe how the lock interacts with the lock spring in both the manual and automatic positions If installed incorrectly this interaction will not be correct 5 Holding knob and lever assembly pull shaft outward far enough to allow removal of the automatic manual lock retaining ring and automatic carr
4. AUTO SHUTOFF OPTION WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 AND 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 2 Remove three screws to free switch bracket from base 3 Remove two screws nuts and lockwashers to free switch from switch bracket E HOME STARTI SWITCH RESET 5 SWITCH BRACKET SWITCH 1 ns 1098 2639 SCREWS 4 Note location of switch wires cut wire tie s and disconnect wires 5 Reassemble in reverse order 6 Check unit for proper operation 2812 AND 2912 TIME DELAY RELAY 1TDR AUTO SHUTOFF OPTION WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 7 2 Note location of relay wires and disconnect them 3 Remove screw s and lockwasher s to free relay 4 Reassemble in reverse order 5 Check unit for proper operation CAPACITOR WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 2 With a bladed screw driver pry the end of the capacitor bracket to free the capacitor A Lift the capacitor and end cap from bracket B Remove end cap and disconnect wires 3 Reassemble in reverse order 4 Check unit for proper opera
5. LOCKWASHERS SWITCH BARRIER 1114 2656 Remove two screws nuts and lockwashers to free switch and mylar switch barrier from switch bracket Reassemble in reverse order steps 4 2 leaving switch nuts loose Adjust AUTOMATIC MANUAL SWITCH Reassemble in reverse order step 1 Check unit for proper operation 33 2712 AND 2912 AUTOMATIC ENGAGE PAWL ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A 2 Remove three screws to free automatic engage pawl assembly and pawl spring from transport assembly PAWL SPRING E CLIPS Ey t A AUTOMATIC ENGAGE PAWL 1115 2657 3 Remove E clips and pull pawl shaft from pawl bracket freeing pawl 4 Reassemble in reverse order 5 Check unit for proper operation 2712 AND 2912 PRINTED CIRCUIT BOARD ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING CAUTION Certain components in this system are subject to damage by electrostatic discharge during field repairs A field service grounding kit is available to prevent damage The field service grounding kit must be used anytime the components are handled 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 7 2 bl the location of the wires and disconnect tnem 3 Remove the mounting hardware to free the board from the electrical cover assembly 4 Reassemble in
6. and HEIGHT OF KNIFE RING GUARD TO KNIFE FACE in SERVICE PROCEDURES AND ADJUSTMENTS Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS TOP KNIFE COVER KNIFE SHAFT ASSEMBLY LOWER HUB AND BEARING RETAINER WARNING UNPLUG UNIT BEFORE SERVICING WARNING THE SLICER KNIFE IS VERY SHARP EXERCISE EXTREME CAUTION WHEN WORKING NEAR THE KNIFE WARNING UNPLUG UNIT BEFORE SERVICING 1 Turn index knob to below 0 position Removal 2 Turn the top knife cover latch by rotating 1 Perform 2612 and 2812 BASE COMPONENT counterclockwise and holding ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS 3 Holding the latch in the rotated position lift cover steps 1 5 and 8 8B 1 out and up to remove from machine 2 Remove KNIFE 4 To install 3 Remove knife shaft ring A Place the cover on the locating pins 4 Remove KNIFE DRIVE MOTOR B Rotate the top knife cover latch counterclockwise until the cam area drops 5 Remove nut and washer from knife shaft over the cover locking pin C Release the latch and the spring will position the cam area under the cover locking pin COVER LATCH A Remove two screws and lockwashers holding lower hub and bearing retainer to base SCREWS AND LOCKWASHERS 7 NOTE If the top knife cover is being replaced perform the TOP KNIFE COVER FIT 5 Check unit for proper operation NOTE Care must be taken n
7. ors Meta ee a A ia aiii 4 US A O anus Se ebay tb e i testa ct Sa ly ny od eens 4 Cord and RO As ene Garcon Ai Mex reat oad al oasis lid 4 NANG SS Sih E E ERA E a A sas 4 Garage Tavel tati ds Bale a Md A a de RA AAA cl ti RE Ba 4 gt O 4 mite Sharpener sos ir da a a a oy bees 4 A II A IIA 4 LUBRICATION lt td Siar ates Ae atic ia dr or a dos 5 TOS aes Ree ee eee A A AN Ske Gia ed eet a 5 MOONS REGIO see ca Sie ih ses O E tel Salad doe antl gh ane Se Sel amelie an Bee he 5 OS All docket Sica essa aa ot dec St ees neh e s Seay je aS oh BA Sin at ase es nahi sane 48 Ghee or 5 Transport Key Tool Installation Instructions 0 0 0 cc eee ees 5 REMOVAL AND REPLACEMENT OF PARTS sastre bated bok aaah Vader heed bee had ded pls de 6 KNIFE SRARPENER sida ii aero Mb Gc e eG ib aM ee ks 6 TOP KNIFE COVER LATCH mt A A bbe eae ti 7 Nemo aliada A A a it Tano dal dae 8 INSTAlanON vr aia da a ico A a oe Bk A A a 8 KNIFE 20 da a ii a dad 9 TOBKNIFE GOVER autodidacta dp cash tee aise ed ta own dd 9 KNIFE SHAFT ASSEMBLY LOWER HUB AND BEARING RETAINER 00000000 5 10 Remi ria A Aah ae ose Sha a a SS a 10 EA cee tht Qe Sabet dines ney de Rap A A aes an tele 11 DEFLECTOR MOUNT rumo que ic eis ok a idos 4b ri See Sid oe PE ene aS hn OSS 12 2612 AND 2812 BASE COMPONENT ACCESS 0 0 0 0 ccc ees 12 2712 AND 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS 12 ROL BEI dos ta Se eR ee rra oie rte Sd a 13 KNIFE D
8. 2712 AND 2912 AUTOMATIC ENGAGE PAWL ASSEMBLY 2 2 0 0 000 eee 33 2712 AND 2912 PRINTED CIRCUIT BOARD ASSEMBLY 0 0000 ee 33 SERVICE PROCEDURES AND ADJUSTMENTS 0 0 0 ee eee nee eens 34 CARRIAGE TRANSPORT ASSEMBLY ADJUSTMENTS 0 0000 e ee ee eee 34 TOP KNIFE GOVERT y satis dad Atal bee dictada dd 35 SA A A lesa Dee Gh faced inh fh OOS See tat ee ete 35 SNECKINO TMs ox alice ah ere edt ee sada A liad ake AA a a 35 INDEX SLIDE MECHANISM ADJUSTMENT o 36 CARRIAGE TRAY ASSEMBLY ADJUSTMENTS 0 0 0 00 cc eee ees 37 Adjustment VerticalOn erris eriie dae a ii A eR wee ER E E 37 SAA IN 37 RULE Y ALIGNMENT csi di a Dis e oc a 38 2712 AND 2912 AUTOMATIC MANUAL SWITCH 2S ENGAGE ADJUSTMENT 38 2712 AND 2912 AUTOMATIC CARRIER ASSEMBLY TRAVEL ADJUSTMENT 0 39 THRUST PEUGADIJUSTMENT si aidea Jas AA Ad oh REM Soars Ses ees 39 GAUGE PLATE AND INDEXING KNOB 0 00 0 eee eee eee ene 40 A 40 A A II tare tel 40 POLY V BELT TENSION 0022 A A A A da a 42 Belt Tension Gauge INStTUCIONS critica ii A it iii sti 42 Adi sting Bet Tension ars a o as ae hb Gack e A ARES de ow 42 2812 AND 2912 CARRIAGE TRAY HANDLE POSITIONING 0 0 0 0 cee eee eee ne 43 KNIFE SHARPENING soo soe debets hte a ac abc cheba sh bans do Cady les ob ulate dd Spa date aa taunt de do 43 TIME DELAY RELAY 1TDR TEST OPTION 2812 AND 2912 0 0 0 ccc ee 44 HEIGHT OF KNIFE RING GUA
9. 732 as a seal between the meat grip hanger and the carriage tray assembly It must be reapplied 1 Remove two screws to free meat grip hanger and handle from carriage tray assembly 5 EAT GRIPI HANGER o 6 7 8 9 2 Remove screw and pull handle from meat grip hanger A Position handle at the new position and press onto the meat grip hanger key B Reinstall screw and tighten C Reassemble meat grip hanger and handle to carriage tray assembly 3 Check unit for proper operation 43 Turn the index knob fully clockwise which will close the gauge plate Remove the top knife cover by rotating the latch knob counterclockwise and lifting up and off Thoroughly wash the area around the knife the exposed knife surfaces and the knife edge Grease should not be allowed to transfer from the knife to the sharpener Plug in power cord and with the carriage in the home position 2612 and 2712 pull the start switch 2812 and 2912 pull and hold in the start position TO SHARPEN PULL SHARPENER HANDLE FORWARD FOR 5 SECONDS TOP KNIFE COVER IS REMOVED With your left hand lift the sharpener handle until horizontal and pull forward until it stops applying pressure for 5 seconds Release sharpener handle slowly If necessary repeat sharpening for another 5 seconds Turn the slicer off Unplug power cord Wipe the slicer with a clean damp cloth to remove any grinding particles Reinstall the Top
10. A eae ets dete ss 25 INDEXING KNOB DIAL ASSEMBLY CAM SHAFT ASSEMBLY 0 00000 cee eee eee 25 FS VOW a A ae cd 25 SLICER GENERAL MAS TAN ATION as a ES e a RG A Sie Ouse wick ol Gee Site he ec 25 TRAY SUPRORT ASSEMBLY ed otek os Coulee a OE Seed a Shee a 25 PRAY oUPPORT ASSENMBLY KEY PLATE 0023 Sek ds withered iia used went eee k 26 MEAT GRIP KNOB AND SLIDE ROD ASSEMBLY 0 0000 ees 26 DEFLECTOR w 242 lt pies ede eke eee eek ee eer eee eee wid Bh Se is ee ee 26 CARRIAGE TRAY ASSEMBLY 5 dico os bait dd btn dida dic dete sh dew hele oh Sok a Bete 26 SHARPENER CAM HANDLE AND KNOB SUB ASSEMBLY 00000 eee ees 27 MEAT GRIP ASSENBLEY gezi kapene er eas eel ae ets A bh a eee is 27 CARRIAGE TRAY HANDLE AND SLIDE ROD SUPPORT HANDLES 00005 28 POLY V PULLEY KNIFE SHAPT costo trido 2b re 28 SHARPENER HOUSING BASE cine a sa re dd 28 SHARPENER HOUSING MOUNT ASSEMBLY ococococccc eee 29 KNIFE RING GUARD bbc o one e Sh GS id ia ita 30 2712 AND 2912 AUTOMATIC MOTOR MOTOR BRUSHES 0 0 00 eee eee 30 2712 AND 2912 CARRIAGE SPEED SWITCH ASSEMBLY 0 000 cece 31 2712 AND 2912 AUTOMATIC CARRIER SHAFT 0 ccc eee eee eee eee 31 2712 AND 2912 AUTOMATIC CARRIER ASSEMBLY 0 0 0 eee 32 2712 AND 2912 AUTOMATIC DRIVE LINKAGE ASSEMBLIES 0 00000 e eee eee 32 2712 AND 2912 AUTOMATIC MANUAL SWITCH 2S ENGAGE 0 0 00 eee ee 33
11. Y0 UNG 39409 99119373 ISNOILYN JHL HLIM ATdWOD LSNW SNOILIANNOD ONIONNOYO ANG TESIYLOS 13 WSN NI 0ILNIYA WEESTE J 915859 CIHO AONI 1YuLS SWOH 3IMIYSYLI M AZITNS eile ZHO9 0S AOSI 001 H9y901IA TOTAL Ts 3009 192071 3NSYDITIddY YSHLO YJO ONG 340 WI1Y 9373 IUNOTAUN HL HLIM ATIdHO9 LSM SNOILSSNNCD INIUNNOYY UNY 9914193713 isnarag 43335 gt 3 e 330 NO SI legl t ri 49 SLICER ELECTRICAL OPERATION USA NI GSINIud 76655 4 LES OIHO Aout JO LNHS 0LNY ONG Lagis SWOH M Y3IDINS ZIZ ZHO9 0S AOSI 001 WNy9Y99TIA TOIDIALOJII 3003 W307 3VIBIDIIdAY YBHLO YO UNY 3003 WOIYLO 3 TWWNOILYN IHL HLIM AIdWOD LSMW SNOILSSNNOD ONIINNOYI ANG WILTELIS3 _isnrasg G33d 50 SLICER TROUBLESHOOTING TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Knife motor 1MTR will not start No power to slicer Carriage tray assembly not in home start position 2712 2812 amp 2912 Interlock switch open 2812 amp 2912 On Off switch malfunction Home start switch or magnet malfunction 2712 2812 amp 2912 6 Time delay relay malfunction option 2812 amp 2912 7 1CR relay inoperative 2812 amp 2912 8 Electronic start switch malfunction 9 Capacitor malfunction 10 Motor inoperative Slicer will not shut off 1 On Off switch malfunction Hard to slice 1 Blade dull 2 Carriage transport assembly not free on slide rod 3 Poly V belt not adjust
12. and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 2 Remove two screws holding motor start switch bracket to base r MOTOR START SWITCH BRACKET 3 Note location of start switch wires and disconnect them 4 Remove two screws from start switch bracket to free start switch 5 Reassemble in reverse order 6 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS 4 Note location of switch wires and disconnect ON OFF SWITCH 1S on di 5 Unscrew switch nut to free switch and switch WARNING UNPLUG UNIT BEFORE SERVICING barrier from switch bracket 1 Perform 2612 and 2812 BASE COMPONENT 6 Reassemble in reverse order ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT 7 Check unit for proper operation ACCESS steps 1 5 8 and 8A 2 Remove two screws holding on off switch ON OFF KNOB bracket to base WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATI C BASE COMPONENT ACCESS steps 1 5 8 and 8A NOTE Take note of orientation of switch activation hole in on off knob and routing of wires before removing switch SWITCH ACTIVATION HOLE Ml NOTE Take note of orientation of switch activation hole in on off knob and routing of wires before removing switch 3 Pull on off switch and bracket assembly from on off knob 4 Pull
13. and the straight edge of the gage turn the set screw clockwise until the thrust plug touches the straight edge of the gage t RE RETAINING SCREW i Y THRUST PLUG 1 i tH pupa STRAIGHT EDGE OF GAGE TSP962 E 7 SLICER SERVICE PROCEDURES AND ADJUSTMENTS GAUGE PLATE AND INDEXING KNOB Checks WARNING UNPLUG UNIT BEFORE SERVICING 1 Check the alignment of gauge plate to knife A Remove TOP KNIFE COVER and CARRIAGE TRAY ASSEMBLY B Install key plate and free the indexing knob C Position gauge plate below the knife D Position a straight edge to contact knife edge in two places near horizontal center E Turn indexing knob until the gauge plate just contacts the straight edge The entire surface of the gauge plate should contact the straight edge If the gauge plate contacts the straight edge at the knife end and not the entire surface a maximum of 1 16 gap is allowed at the operator end msr mec MAXIMUM OF 1 16 BETWEEN GAUGE PLATE AND STRAH EDGE F Check to ensure the top and bottom extensions above top rib and below bottom rib of the gauge plate are equal in height to the knife flush or above the knife NOTE If top and bottom extensions are below knife edge the gauge plate must be replaced G With the straight edge still in contact with the knife and gauge plate the index knob must be at zero NOTE A maximum of 1 16 gap is allowed at the ope
14. bezel away from the base to access the speed nut holding the lamp to the bezel SS y TA K t S da LOCKOUT BAR C a 1099 2640 ES D Vi nis al s 4 Remove two screws to free slide rod from base 18 SLICER REMOVAL AND REPLACEMENT OF PARTS 5 Lift slide rod and carriage transport assembly from base A Remove washers and bumpers from the slide rod B Pull slide rod from carriage transport assembly NOTE The slide rod transport roller bar and carriage transport assembly must be reinstalled simultaneously 6 Install slide rod in transport assembly A Install bumpers and washers on rod B 2812 and 2912 Using the transport key tool move carriage pivot so that interlock bar on carriage transport assembly is on top of lockout bar during installation of carriage transport assembly as shown in photo step 3 C Reinstall carriage transport assembly slide rod to the base with square flats on slide rod toward base starting the two mounting screws leaving them loose THIS FLAT AWAY FROM BASE D Reinstall the transport roller bar using nine SCrews E Tighten the slide rod mounting screws 7 Check CARRIAGE TRANSPORT ASSEMBLY adjustments 8 Remove transport key tool 9 Reassemble in reverse order step 1 10 Check unit for proper operation ROLLER BEARING ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove SLIDE ROD 2 Remove retaining ring and pull rolle
15. 11A 1106 2647 Assembly 1 Inspect index slide rod bores in support for burrs Inspect bushings for burrs Carefully insert the bushings squeezing lightly into the slide making them even with the edges of the casting Install the clamp screws and washers turning only until seated Do not tighten them at this time Lubricate the bushings and index slide rod with Lubriplate 630AA Insert the index slide shaft through the opening in the support A Insert the index slide rod through the support bore index slide bushings and the other support bore B Tighten the set screws in support to fix the Slide rod in place Lubricate the anti rotation rod with Lubriplate 630AA and insert into the slide bushing A Insert the two mounting screws and lockwashers into the support but do not tighten 24 8 Holding the assembly in place install the spring The assembly should be pulled back by the spring to the gauge plate open position A Holding assembly in the gauge plate open position spring fully extended tighten one of the two index slide rod clamp screws until the spring cannot pull back B Slowly loosen screw to a point where the spring suddenly pulls back Do not tighten or loosen this screw anymore C Repeat steps 8A and 8B for the other index slide rod clamp screw 9 Holding the assembly in the gauge plate open position spring fully extended tighten the anti rotation rod clamp screw until the s
16. 8 For components in the upper base unscrew the upper right hand foot 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE A Remove four screws to free automatic AND AUTOMATIC BASE COMPONENT base from upper base and position ACCESS steps 1 5 and 8 8B 1 automatic base as shown 2 Loosen belt tensioning adjustment screw nuts 3 a gt A A Loosen screw holding tensioner bracket to UPPER BASEN AUTOMATIC BASE motor plate B Loosen two screws holding motor plate to motor B For components behind the upper e STEP 2B electrical cover remove five screws 241 606 C Pivot motor to allow slack in poly V belt and remove from pulleys 3 Install poly V belt adjust POLY V BELT TENSION and check PULLEY ALIGNMENT 4 Reassemble in reverse order step 1 13 SLICER REMOVAL AND REPLACEMENT OF PARTS KNIFE DRIVE MOTOR WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 AND 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 Note the color and location of motor wires and disconnect them A Remove and save the piggyback terminals Disconnect wires from power cord Remove POLY V BELT steps 2 2C Remove three screws holding motor plate motor and gasket assembly to base A Tilt assembly and remove it from base Note location of pulley on motor shaft and loosen two set sc
17. Crews A Pull pivot plate from switch bracket and base PIVOTING INTERLOCK PLATE sA 5 Remove screw to free bushing and interlock plate follower from plate A Pull follower bushing from follower PIVOTING INTERLOCK PLATE T i INTERLOCK SWITCH ACTUATING SCREW t Ny FOLLOWER o o o BUSHING il gt NOTE When installing follower to plate torque screw to 25 30 in Ibs 22 NOTE When installing the interlock switch actuating screw turn it until only a couple threads show through 6 Unscrew interlock switch actuating screw from plate Reassemble in reverse order making sure the gauge plate is in the below O position and the follower is inserted at the end of the cam spiral 8 Adjust Interlock Switch 2812 and 2912 9 Check unit for proper operation INDEX MECHANISM SLIDE SUPPORT ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING Disassembly 1 Remove KNIFE 2 Remove GAUGE PLATE NOTE When the three set screws in the special mount are tightened torque them to 120 in Ibs 3 Loosen three set screws to free special mount from index mechanism slide SPECIAL MOUNT A Pull special mount from slide SLICER REMOVAL AND REPLACEMENT OF PARTS Pull disc cover from slide NOTE When the drip ring is installed RTV 732 should be on the drip ring flange that is against the base O 6 Pull drip ring from base Perform 2612 and 2812 BASE COMPONEN
18. E 2912 in order to observe the transport assembly movement in automatic operation you will have to simulate having the carriage tray assembly installed by using the transport key tool 3 2912 read note and place unit in automatic 2712 place unit in automatic A Observe the interaction of transport assembly and slide rod bumper looking for the transport assembly to just touch the bumper when it returns to the home position B Unplug unit NOTE By exposing more threads of the automatic carrier through the end of the swivel lock the transport will travel farther toward the home position slide rod bumper less or no threads further away 4 Screw the swivel lock and locknut in the direction determined in step 3A 39 5 Repeat steps 2 4 until proper adjustment is achieved 6 Reassemble in reverse order step 1 7 Check unit for proper operation THRUST PLUG ADJUSTMENT WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove the TOP KNIFE COVER 2 Remove the knife retaining screw 3 Insert the knife retaining screw into the thrust plug gage The thrust plug should touch the bottom of the straight edge of the gage A If the thrust plug hits the straight edge of the gage and will not fit under turn the set screw counterclockwise and tap the thrust plug to seat it against the set screw until the thrust plug will fit under the straight edge of the gage B If there is a gap between the thrust plug
19. Knife Cover SLICER SERVICE PROCEDURES AND ADJUSTMENTS TEST OPTION 2812 AND 7 _Reassemble in reverse order step 1 291 2 8 Check unit for proper operation eco HEIGHT OF KNIFE RING AND AUTOMATIC BASE COMPONENT GUARD TO KNIFE FACE ACCESS steps 1 5 and 7 NOTE When replacing or removing a knife shaft assembly lower hub and bearing retainer knife or 3 Test for 120VAC between 1TDR 2 3 during the face should be checked 150 max do 100 min first 10 seconds approximately of operation If Before checking for this dimension refer to KNIFE Teele Nek ESEN SHAFT ASSEMBLY LOWER HUB AND BEARING A Testfor120VAC aces IDR RETAINER installation step 7 to verify there s no 2 Turn slicer on 1 If voltage is present go to B WARNING UNPLUG UNIT BEFORE SERVICING 2 If voltage is not present continue 1 Remove TOP KNIFE COVER steps to identify and correct problem l 2 Refer to KNIFE SHAFT ASSEMBLY LOWER eee HUB AND BEARING RETAINER installation 4 After 10 seconds with no carriage movement arn and verify there is no end play in knife there should be near 0 volts across 1TDR 2 3 3 Measure the height of knife ring guard to knife face 150 max To 100 min If the measured dimension is not within the proper tolerance replace the knife ring guard and repeat this step 5 Turn slicer on and before 10 seconds operate the carriage so that the magnet passes in front of 3LS This should rese
20. M SHOWN AS SLICER WOULD SIT ON FEET IN LOCKED POSITION TSP1002C A Loosen the screw holding the roller bearing assembly to the carriage transport assembly using the special Allen wrench ie ADJUSTING SCREW B Turn the adjusting screw until the interlock bar clears the bottom of the pivoting interlock plate assembly by 005 to 020 and tighten the screw 4 2812 and 2912 To adjust the interlock bar clearance of 030 maximum but with no interference to the edge_ of the lockout bar remove two screws holding transport cover to transport LOCKOUT BAR aie ane ee BUT WITH NO INTERLOCK BAR INTERFERENCE e SHOWN AS SLICER WOULD SIT ON FEET IN UNLOCKED POSITION 15P1253C A Using the key plate move the interlock bar to the operating position and move the carriage transport assembly away from the home position B Turn the interlock bar shaft until the interlock bar clearance to the edge of the lockout bar is 030 maximum but with no interference C Reinstall transport cover to transport 34 SLICER SERVICE PROCEDURES AND ADJUSTMENTS 5 To adjust the overturn screw within 003 to 005 of the transport roller bar loosen the locknut and turn the overturn screw until the proper clearance is present NY TRANSPORT ROLLER BAR 003 TO 005 OVERTURN SCREW ae To A CARRIAGE TRANSPOR
21. Move carriage transport assembly to home position Remove CARRIAGE TRAY ASSEMBLY Remove KNIFE SHARPENER Place slicer on its side resting on sharpener support assembly If accessing a component under bottom cover remove the two feet over the bottom cover and remove the screws retaining the bottom cover Reassemble in reverse order Check unit for proper operation 2712 AND 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS WARNING UNPLUG UNIT BEFORE SERVICING 1 2 Turn index knob to below 0 position Move carriage transport assembly to home position Remove CARRIAGE TRAY ASSEMBLY Remove KNIFE SHARPENER SLICER REMOVAL AND REPLACEMENT OF PARTS 5 Turn the slicer up and resting on the sharpener 1 Pull cover on an angle away from the side of the automatic base on off switch outward and upward for SN removal _ ELECTRICAL COVER e ASSEMBLY E A A to 7 d e a A e O _ UPPER ELECTRICAL COVER BOTTOM COVER a 0 1093 2634 6 For components in the automatic base under the bottom cover remove nine screws and pull cover upward from behind feet 9 Reassemble in reverse order 10 Check unit for proper operation 7 For components in the automatic base on the electrical cover assembly remove eight screws and carefully pull assembly outward to access POLY V BELT wiring connections WARNING UNPLUG UNIT BEFORE SERVICING
22. Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A 2 Move the transport assembly to expose the index slide mechanism 2812 and 2912 use transport key tool to accomplish this 3 Loosen the two index slide rod clamp screws and the anti rotation rod clamp screw 36 4 Turn the index knob until the dimension shown is present Knife exposed ICAO INDEX SLIDE ROD BES CLAMP SCREWS 7 16 ANTI ROTATION ROD am CLAMP SCREW me 1118 266 Tighten one of the index slide rod clamp screws until the index mechanism will not move when the index knob is turned A Slowly back off the clamp screw until you notice the spring tension release and or movement of the mechanism Do not tighten or loosen this screw anymore Repeat steps 4 and 5 for the other index slide rod clamp screw and the anti rotation clamp screw Turn the index knob to the below 0 position Grasp the gauge plate and check for index slide mechanism freeplay If freeplay is present check the index slide anti rotation rod mounting screws and slide support mounting screws for tightness A Repeat step 8 If freeplay is still present the mechanism must be readjusted or repaired Turn the index knob through its travel checking the index slide mechanism for backlash binding or skipping A If backlash binding or skipping is present repeat steps 3 8 R
23. RD TO KNIFE FACE 0 00 ccc ee eee 44 KNIFE SHARPENER TO KNIFE POSITIONING 00 00 eee eee tenes 44 2812 AND 2912 INTERLOCK SWITCH ADJUSTMENT 2 0 0 ee 45 ELEGTRICAWOPERATION ia a rs a 46 COMPONENT FUNCTION 33 2540 datada dd ai dad dt 46 SEQUENCE OF OPERATION aidsa siii ii io ee cn dde Sede edt eel oh Os Era ic 47 Manual Sequence of Operation 0 0 0 ihe n eee ee eens 47 Automatic Sequence Of Operation xv vs 48 6 lod wee Ea weeded oa Ss weet Dae 47 WIRING DIAGRAMS 2 lt 404 secharedises rl ios OS AA Eb YS 48 TROUBLESHOOTING 203 aia ba ee phe ee eee eee eh ete eee eee eae 51 HOBART CORPORATION 1998 SLICER GENERAL GENERAL INTRODUCTION Models 2812 Manual 2612 Manual 2912 Automatic 2712 Automatic Features Listed are the finish features and option differences between the models FEATURES 2612 2812 2712 2912 Carriage Assembly 1 2 1 2 Handle s Sharpener Housing Mount Finish Base Finish Finish Tray Support Assembly Finish Automatic Automatic Shut Off Off t Pesteroresin tw fs e Ts Carriage Speeds N N 2 Automatic Cleaning Leg Kickstand S S N N Lift Lever on Side N N S S N Not available S Standard on this model A Anodized finish BB Polished and ball burnished finish O Option Shut off after 10 seconds Knife Home start The knife motor will not start unless the carriage unit is at the indexing knob end of the s
24. RIVE MOTOR 20 2 a e lA io 14 2812 and 2912 INTERLOCK SWITGHYILS 2 io wae ds Ee a a aos dai DORE 14 2712 HOME SWITCH 1LS 2812 AND 2912 HOME START SWITCH 2LS AND RESET SWITCH 3LS AUTO SHUTOFF OPTION ooococcocoo ene 15 2812 AND 2912 TIME DELAY RELAY 1TDR AUTO SHUTOFF OPTION 15 CAPACITOR tasas dut iba oda did od A bid da cta 15 CORD AND PLUG ASSEMBIY lt td o a eee ets 16 AA Siete oe Mae O A A AA 16 ELECTRONIC START SWITGOGH cast ode go ii idos A al A 16 ON OFF SWITCHUIS cross da a di e ees ee 17 ONOFF RNOB astas cocino eek ah bed e tica Mt toon ch aparador de bois te tal dosh nde e o Baie Sen dad 17 CAMPANA ii ba ia 18 SEDE ROD ir a A A A A a 18 ROLLER BEARING ASSEMBLY 0301 4 ileus id dd is A ad ARES EY 19 TRAY SUPPORT ASSEMBLY KNOB ou 224 25 dr Ob eae be A AAA 19 CARRIAGE TRANSPORT ASSEMBLY 23 cc s ie 2 e a eee hei 20 GAUGE PLATE ASSEMBLY 2224 2345953532 bet ds hol dew beet th de deh bese heed whe aon Sow dines 21 PIVOTING INTERLOCK PLATE ASSEMBLY ocoocococco eee eee 22 INDEX MECHANISM SLIDE SUPPORT ASSEMBLY 0 0 000 eee 22 BEE 5 at Rectan Mia hae talib Reels a a tetera a in Reins Jeanine Le gas nls ysis dee bonlind Gotan te in e anette 22 o Yeh Mixtecs too ohh apse eee ih Osis ook Sea ek aod eee OSE hy BA Sind ape dh bd cl AN 24 INDEXING GAM 2024 2a2o 20Gb ecu be deer di cee eee cee ie eee ee ea 24 AA reia car sn ey eh tt hy Ga tv Sacer dont sist de a geek Bry Ds ya
25. T ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A Remove PIVOTING INTERLOCK PLATE ASSEMBLY steps 2 3 4 and 4A Remove nine screws holding transport roller bar to base and pull roller bar sideways to remove Turn index knob as required to access the three screws holding the index slide support mechanism assemblies to the base and remove them A Turn index knob to allow the most vertical movement of the slide dowel pin within the cam as possible Le iS e SL o IDE DOWEL PIN NDEX BACKLASH SPRING gt s Dr Le PSCREWS Lol 1104 2645 Gently tap the end of the index slide with a rubber mallet until the dowel pins on the slide index support clear the holes in the base Move the assemblies until the slide dowel pin is free of the cam and lift from base 10 Remove index backlash spring 11 Remove two screws and lockwashers to free anti rotation index rod from support A B Remove clamp screw washer and pull rod from slide Pull bushing from slide 12 Remove two set screws in support assembly two clamping screws and washers in slide and slide index slide rod from support SUPPORT ASSEMBLY K INDEX SLIDE SET SCREW 23 SLICER REMOVAL AND REPLACEMENT OF PARTS 13 Pull slide from support 14 Pull bushings from slide STEP 14 l lt STEP 13 STEP 11B z y rar vat STEP
26. T ASSEMBLY J VIEW FROM SWITCH END TSP1005C A Tighten the locknut 6 Using key plate move the carriage transport assembly out of the interlocked position and move it back and forth its full travel placing it in and out of the interlocked position checking for proper movement and interlocking 7 Reassemble in reverse order step 1 8 Check CARRIAGE TRAY ADJUSTMENT 9 Check unit for proper operation TOP KNIFE COVER FIT General NOTE Read this entire procedure BEFORE checking Perform this check on new slicers anytime a new knife is installed if the product is going under the top knife cover or if the product is being torn by the top knife cover The top knife cover and ring guard are designed to work without adjustments of any kind You must check to be sure the top knife cover fits properly when installed but no adjustments can be made Checking Fit WARNING THE SLICER WILL BE OPERATING FOR PORTIONS OF THIS CHECK MAKE CERTAIN THAT THE GAUGE PLATE IS COMPLETELY CLOSED ANYTIME THE SLICER IS RUNNING WARNING THE SLICER KNIFE IS VERY SHARP EXERCISE EXTREME CAUTION WHEN WORKING NEAR THE KNIFE 1 Remove CARRIAGE TRAY ASSEMBLY 2 Use the key plate to allow the slicer to be started 3 Check to ensure the top knife cover is in the locked position Rotate the knob ccw to unlock Release the knob The knob should rotate under spring tension to the locked position Rotate the knob c
27. When the indexing knob and dial assembly are reassembled RTV 732 should be on the outline of the dial assembly where it meets the indexing knob 2 Remove the dial assembly 3 Remove indexing drive disc 4 Remove indexing drive disc roll pin 5 Remove two locknuts using special thin wrenches and Belleville washers E 5 m BELLEVILLE WASHERS LOCK NUTS C INDEX BEZEL 7 6 Remove INDEXING CAN steps 1 2 and 3 7 Pull cam shaft from base and index bezel 25 Installation 1 Reverse removal steps 7 and 6 2 Install the two Belleville washers NOTE The concave surface of both washers should be toward each other 3 Install the two locknuts Tighten the locknuts until the shaft turns with slight resistance and lock the nuts together using special thin wrenches 4 Install roll pin in cam shaft 5 Install indexing drive disc 6 Install the dial assembly and indexing knob and adjust GAUGE PLATE AND INDEXING KNOB 7 Check unit for proper operation TRAY SUPPORT ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING NOTE The keyplate is stamped with the last three numbers of the slicer serial number If it is replaced stamp these numbers on the replacement part 1 Remove CARRIAGE TRAY ASSEMBLY steps 1 4 2 Remove knob assembly by removing retaining ring and pulling
28. am CAM KNOB AND HANDLE ASSEMBLY NOTE When reinstalling screw torque to 1 5 in lbs 3 Reassemble in reverse order 4 Check unit for proper operation MEAT GRIP ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove MEAT GRIP KNOB AND SLIDE ROD ASSEMBLY steps 1 and 1A 2 Remove screw retaining washer and handle tension washer from end of meat grip handle 3 Remove handle handle washer and meat grip from the meat grip arm NOTE The meat grip arm bushings should rotate freely in the assembly and have some end play If these conditions are not present the meat grip arm should be replaced If the meat grip was hard to rotate or would not rotate the washers on each side of the meat grip arm should be replaced 4 Remove the nyliner bushing from the meat grip arm 5 Reassemble in reverse order 6 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS CARRIAGE TRAY HANDLE AND SLIDE ROD SUPPORT HANDLES WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove MEAT GRIP KNOB AND SLIDE ROD ASSEMBLY NOTE Apply silicone RTV 732 to seal between the handle and slide rod support and the carriage tray when reassembling 2 Remove five screws to free handle and slide rod support and handle from carriage tray NOTE Apply silicone RTV 732 to seal between the meat grip hanger and the carriage tray when reassembling 2812 and 2912 The carriage tray handle mounte
29. d at the meat grip hanger can be installed in one of three positions Take note of the position of the handle before removing it Refer to CARRIAGE TRAY HANDLE POSITIONING STANDARD A HANDLE HANDLE POSITION POSITIONS PAS A Remove three screws to free meat grip hanger and handle from carriage tray E AND SLIDE ROD SUPPORT NY y E MEAT GRIP HANGER 3 Remove screw and pull handle from support and meat grip hanger 2812 and 2912 4 Reassemble in reverse order 5 Check unit for proper operation POLY V PULLEY KNIFE SHAFT WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove the KNIFE 2 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 3 Perform POLY V BELT removal steps 2 2C 4 Perform KNIFE SHAFT ASSEMBLY LOWER HUB AND BEARING RETAINER REMOVAL steps 4 4C 5 Reassemble per KNIFE SHAFT ASSEMBLY LOWER HUB AND BEARING RETAINER INSTALLATION STEPS 4 7 6 Reinstall top knife cover 7 Continue reassembly in reverse order steps 3 and 2 8 Adjust POLY V BELT TENSION and check PULLEY ALIGNMENT 9 Check unit for proper operation SHARPENER HOUSING BASE WARNING UNPLUG UNIT BEFORE SERVICING WARNING THE SLICER KNIFE IS VERY SHARP EXERCISE EXTREME CAUTION WHEN WORKING NEAR THE KNIFE 1 Remove KNIFE SHARPENER NOTE When slotted shoulder bo
30. deflector to the mount and rotating it towards the knife 3 Check unit for proper operation CARRIAGE TRAY ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Turn index knob to below 0 position 2 Place the carriage tray assembly in the home position 3 Unscrew the tray support assembly knob A Tilt the carriage tray and tray support assembly to the right until it stops B Grasp assembly with both hands and lift straight up NOTE Apply silicone RTV 732 to seal between the carriage tray assembly and tray support assembly when reassembling SLICER REMOVAL AND REPLACEMENT OF PARTS 4 Remove four screws and washers to free Carriage tray assembly from tray support assembly LP TRAY SCREWS AND WASHERS a ES 1107 2648 5 Remove MEAT GRIP KNOB AND SLIDE ROD ASSEMBLY NOTE Apply silicone RTV 732 to seal between the handle and slide rod support and the carriage tray also between the meat grip hanger and the carriage tray when reassembling 6 Remove two screws to free meat grip hanger from carriage tray 7 Remove HANDLE AND SLIDE ROD SUPPORT HANDLES 8 Reassemble in reverse order 9 Adjust CARRIAGE TRAY ASSEMBLY 10 Check unit for proper operation 2 SHARPENER CAM HANDLE AND KNOB SUB ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform SHARPENER HOUSING BASE steps 1 and 2 2 Remove screw to free knob and handle assembly from the c
31. e bottom is above the gauge line pull feeler bar down tighten belt tension and re test B If bottom is below the gauge line pull feeler bar down loosen belt tension and re test C If the bottom aligns with the gauge line the proper tension is present Adjusting Belt Tension WARNING UNPLUG UNIT BEFORE SERVICING 42 Perform POLY V BELT removal steps 1 3 Following the Belt Tension Gauge Instructions test the belt tension If adjustment is required do the following steps Loosen the nuts on belt tensioning adjustment screw A Perform POLY V BELT removal steps 4A and 4B B Pivot the motor in the proper direction by adjusting the belt tensioning adjustment screw and tighten the nuts 1 Tighten the screws loosened in step 3A C Re test belt tension step 2 Repeat steps 3 3C until the 50 Lbs new belt or 35 Lbs used belt belt tension is present Check PULLEY ALIGNMENT Reassemble in reverse order step 1 Check unit for proper operation SLICER SERVICE PROCEDURES AND ADJUSTMENTS 2812 AND 2912 CARRIAGE TRAY HANDLE KNIFE SHARPENING WARNING UNPLUG UNIT BEFORE SERVICING POSITIONING 1 NOTE The carriage tray handle mounted at the meat grip hanger location can be installed in one of three positions 2 EN A STANDARD RK rear HANDLE HANDLE TSP1134C POSITION PosiTIONs TSP 11846 WARNING UNPLUG UNIT BEFORE SERVICING NOTE There is silicone RTV
32. e on these models it is not practical to write a sequence of operation for each model The following example is based on a Model 2912 120 60 1 with home start wiring diagram F 33696 1 Conditions Correct voltage supplied to slicer Index knob turned to O or above interlock switch 1LS closed Carriage tray assembly in home position home switch 2LS closed I O BD gt On Off switch 1S in off position E Automatic manual engage 2S switch in manual position c no contacts closed Manual Sequence of Operation 1 Operator pulls on off switch 1S to start position 2 1CR energized through 1S 2S and 2LS 3 1CR locks through 1S 4 1 1CR 6 8 and 1LS A 1PL lights through 1S 4 1 and 1CR 2 4 B 1MTR energized through 1S 4 1 and 1CR 2 4 4 Operator releases 1S 1S 2 3 open 5 Operator manually moves carriage transport assembly to slice product Automatic Sequence of Operation NOTE The conditions are the same as stated in conditions 1A 1E above 1 Operator pulls on off switch 1S to start position 2 1CR energized through 1S 2S and 2LS 3 1CR locks through 1S 4 1 1CR 6 8 and 1LS A 1PL lights through 1S 4 1 and 1CR 2 4 B 1MTR energized through 1S 4 1 and 1CR 2 4 Operator releases 1S 1S 2 3 open Operator makes speed selection 2S placed in automatic position C NC contacts close 2CR energized through 1S 1CR 6 8 1LS 2LS 2S C NC to 2CR 2CR locks through 1S 1CR 6 8 1LS 2CR 6 8 and 25 A 2MTR energiz
33. eassemble in reverse order step 1 Check GAUGE PLATE AND INDEXING KNOB ADJUSTMENT Check unit for proper operation SLICER SERVICE PROCEDURES AND ADJUSTMENTS CARRIAGE TRAY ASSEMBLY ADJUSTMENTS NOTE The GAUGE PLATE AND INDEXING KNOB adjustments must be correct before adjusting the carriage tray assembly Check the TOP KNIFE COVER FIT The carriage tray assembly is adjusted properly when the tray V has 040 min to 062 max clearance between the bottom end of the carriage tray and the knife and the gap of the tray edge is adjusted within 030 maximum difference to each other at three points All of the above adjustments should be checked anytime an adjustment is made Adjusting the proper combination of the two adjusting screws on the carriage transport assembly that interact with the tray support assembly and or movement of the tray when the four mounting screws holding it to the tray support assembly are loosened will bring a given dimension within the required tolerance Adjustment Verification WARNING UNPLUG UNIT BEFORE SERVICING 1 With the carriage tray assembly securely attached to the transport assembly verify the tray adjustment by doing the following 2 The three points of measurement on the tray to the knife are shown below a POINT 3 POINT 1 1159 2704 3 Move the tray until point 1 tray V is above the knife A Measure with a feeler gauge on top o
34. ed properly Wedge shaped slice 1 Gauge plate not aligned with knife Refer to GAUGE PLATE and INDEXING KNOB ADJUSTMENT Carriage tray assembly not aligned with knife and gage plate Product going under top knife cover or Top knife cover not installed properly being torn by top knife cover Top knife cover not fitted properly Refer to TOP KNIFE COVER FIT CHECK Defective bearings Top knife cover rubbing knife Refer to THRUST PLUG ADJUSTMENT 3 Poly V belt alignment Indexing mechanism hard to turn 1 Improperly adjusted or malfunctioning indexing mechanism parts 2 Knob is dragging on index bezel Meat grip hard to turn 1 Worn washers on each side of meat grip arm 2 Too much tension on meat grip handle mounting screw Meat grip not retained properly in stored 1 Worn or malfunctioning meat grip hanger position Carriage transport assembly out of 1 Roller bearing assembly not properly adjusted or worn adjustment Deflector hard to install 1 Deflector worn 2 Deflector mount worn Top knife cover not remaining in locked 1 Spring inoperative position 2 Loose parts Slicer shuts off after approx 10 seconds with carriage being moved 1 Reset switch 3LS or magnet malfunction option 2812 amp 2912 2 Time delay relay inoperative optiion 2812 amp 2912 Knife motor running knife not turning 1 Poly V belt malfunction 2 Poly V belt not adjusted properly
35. ed they should be pressed into the plunger as shown press BEARING FLUSH PRESS BEARING UNTIL PFS EAN SLICER REMOVAL AND REPLACEMENT OF PARTS 8 Remove two screws 22 to remove the rear locking plate 23 from housing and stud assembly 9 9 Note how the long end of the U spring 16 is inserted into the housing and stud assembly 9 The short end is retained by a notch in the locking lever 15 Remove shoulder screw 13 to free locking lever 15 and U spring 16 from housing and stud assembly 9 10 Remove retaining ring 20 to free truing arm and pusher rod assembly 21 from housing stud A Remove screw 17 from truing arm to free truing stone 18 and truing stone springs 19 NOTE When installing the truing stone to the truing arm and push rod assembly the springs must be nested together and assembled with their longest legs against the truing stone and their open end away from the screw The screw must be installed so its head will be toward the housing after final assembly ASSEMBLE SPRINGS WITH LONG LEGS HERE SPRINGS TO BE NESTE WITH LONG LEGS TOGETHER 11 Reassemble knife sharpener assembly in reverse order 12 Reinstall knife sharpener assembly on slicer 13 Check for proper knife sharpener operation SLICER REMOVAL AND REPLACEMENT OF PARTS TOP KNIFE COVER LATCH WARNING UNPLUG UNIT BEFORE SERVICING Removal 1 Remove the TOP KNIFE COVER 2 Remo
36. ed through 2CR 2 4 1CB 1 2 and motor control Automatic carrier assembly moves and engages pawl on carriage transport assembly A PADEL yA A Carriage transport assembly moves and slices product automatically 47 SLICER ELECTRICAL OPERATION WIRING DIAGRAMS 1S ON OFF ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE NATIONAL ELECTRICAL CODE AND OR OTHER APPLICABLE LOCAL CODES F 33590 oy es foe Sol oO 25 53 Oy 1LS ICR INTERLOCK CUB CY NG rans ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE NATIONAL ELECTRICAL CODE AND OR OTHER APPLICABLE LOCAL CODES F 35582 A 1S_ ON OFF 8 ZLS _i_z HOM xy 25 ul Walle RESET ILS ICR INTERLOCK ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE NATIONAL ELECTRICAL CODE AND OR OTHER APPLICABLE LOCAL CODES F 33592 A HOBART TROY OHIO 45374 PRINTED IN USA ELECTRONIC START SWITCH HOBART TROY OHIO 45374 PRINTED IN USA Le TIME DELAY RELAY I TDR TROY OHIO 45374 PRINTED IN USA 48 ELECTRICAL DIAGRAM 100 115 120V 50 60Hz 2612 SLICER ELECTRICAL DIAGRAM 100 115 120V 50 60Hz 2812 SLICER T4 OR YELLOW IMTR MOTOR ELECTRONIC START SWITCH ELECTRICAL DIAGRAM 100 115 120V 50 60Hz 2612 SLICER W RUTO SHUTOFF SLICER ELECTRICAL OPERATION BSA NI 031NIVA WSE9Ss J pLesy OIHO AQU LUVEOH LLS JWOH M X39179 2162 2HO9 0S A0OSI OO1 Woord WOISLIAIS 3003 9097 FlvII dds YBHLO
37. eration of the knife motor when the index knob is in the below O position 2712 Relay 1CR Controls power to automatic motor 2812 and 2912 Relay 1CR Controls power to knife motor On Models with Auto Shut off controls time delay relay 2912 Relay 2CR Controls power to automatic motor 2812 and 2912 Option Time Delay Relay 1TDR Removes power from relay after approximately 10 seconds if Carriage transport assembly magnet is not passed in front of reset switch 3LS 2812 and 2912 Option Reset Switch Auto Shutoff 3LS Resets time delay relay during slicing to 10 seconds after carriage transport assembly magnet passes in front of 3LS 2712 and 2912 Motor Control Controls speed of automatic motor 2812 and 2912 Home Start Switch 2LS Prevents the slicer from starting unless in the home position 2712 Home Start Switch 1LS Prevents the slicer from starting unless in the home position 2712 and 2912 Automatic Manual Switch 2S Engage Controls mode of operation 2712 High Low Switch Selects speed of automatic motor 2912 Speed Adjustment Switch Selects speed of automatic motor 2712 and 2912 Circuit Breaker 1CB Provides overload protection for motor control and automatic motor 2MTR 46 SLICER ELECTRICAL OPERATION SEQUENCE OF OPERATION Due to the various components and options availabl
38. ews 3 Holding the sharpener handle horizontal and pulled forward until it stops with the leading edge of the grinding wheel against the knife measure for 3 4 from the back face of the grinding wheel to the front of the housing and stud assembly A Measure distance from knife to following edge of grinding wheel The correct dimension is 5 64 B If adjustment is required loosen two screws holding sharpener housing base to sharpener housing mount assembly Reposition sharpener housing base tighten mounting screws and recheck steps 3 and 3A Repeat as necessary to obtain the correct position of sharpener to knife relationship 4 Reassemble in reverse order steps 2 and 1 5 Sharpen knife checking for proper sharpener operation 6 Check unit for proper operation 2812 AND 2912 INTERLOCK SWITCH ADJUSTMENT WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TESTS OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DISCONNECT POWER ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A 2 Back off the switch actuating screw in the interlock plate assembly until only a couple of threads show through 3 With the gauge plate closed all the way and the transport assembly in the home po
39. f the knife to the bottom end of the tray looking for 040 min to 062 max clearance Note the measurement 3 1160 2705 B Move the tray until point 2 leading edge of tray is above the knife and measure that the clearance is within 030 max difference of the noted measurement in step A Note the measurement C Move the tray until point 3 upper tip of tray wall is above the knife and measure that the clearance is within 030 max difference of the noted measurements in steps A and B D Confirm that the measurement at points 1 2 and 3 are within 030 max difference of each other 4 f any of the measurements are not within the tolerances the carriage tray must be adjusted Adjustment NOTE Anytime the tray assembly is split from the tray support for adjustment RTV 732 must be reapplied to seal the two assemblies together 1 Loosen the four screws holding the tray to the tray support and split them apart 2 Loosen the two locknuts on the adjusting screws on the carriage transport assembly 3 Follow the adjustment verification procedure loosening and tightening the nuts screws and positioning the tray until the proper tolerances are present 4 Use RTV 732 to seal assemblies together 5 Check unit for proper operation SLICER SERVICE PROCEDURES AND ADJUSTMENTS PULLEY ALIGNMENT WARNING UNPLUG UNIT BEFORE SERVICING NOTE The pulley alignment should be checked every time preventive ma
40. from support arm NOTE The key plate must be oriented as shown RETAINING RING SUPPORT ARM N zg y 2 s R vi y S r i a a Ma ao 1 3 Remove key plate by removing two screws and prying off of the support arm 4 Reassemble in reverse order 5 Adjust CARRIAGE TRAY ASSEMBLY 6 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS TRAY SUPPORT ASSEMBLY KEY PLATE WARNING UNPLUG UNIT BEFORE SERVICING NOTE The keyplate is stamped with the last three numbers of the slicer serial number If it is replaced stamp these numbers on the replacement part 1 Perform CARRIAGE TRAY ASSEMBLY removal steps 1 3B NOTE The key plate must be oriented as shown 2 Remove key plate by removing two screws and prying off of the support arm 3 Reassemble in reverse order 4 Check unit for proper operation MEAT GRIP KNOB AND SLIDE ROD ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING NOTE Loctite No 242 must be used on the threads of mounting stud when knob and slide rod assembly Is reassembled 1 Unscrew knob and slide rod assembly from handle and slide rod support A Slide meat grip assembly and washer from knob and slide rod 2 Reassemble in reverse order 3 Check unit for proper operation 26 DEFLECTOR WARNING UNPLUG UNIT BEFORE SERVICING 1 Roll deflector away from deflector mount to remove 275 640 2 Reassemble by guiding the
41. ial assembly is properly installed the dial should be inside the recessed area of the bezel but must not interfere with the index bezel A Remove index knob dial assembly by removing screw B Install indexing drive disc so that when the index knob dial assembly is installed it will clear the index bezel with the dial inside the recessed area of the bezel Repeat steps 4 A and B as required 4 Reassemble unit 5 Check unit for proper operation SLICER SERVICE PROCEDURES AND ADJUSTMENTS POLY V BELT TENSION Belt Tension Gauge Instructions 1 Free feeler bar from carrying position by unscrewing the upper sleeve Fo PRESSURE INDICATOR FEELER BAR Swing feeler bar into perpendicular test position Pull feeler bar down This must be done before each test Turn upper sleeve until bottom of sleeve aligns with the required 50 Lbs New belt or 35 Lbs used belt of belt tension Normal tensions are read on the black scale Align feeler bar along middle of belt close to the center of the span between the center lines of the two pulleys 6 With a finger over the cap of the gauge press down perpendicularly until you just feel the pressure indicator touch your finger This will occur at the same time O is aligned with the bottom of the upper sleeve Lift the gauge from the belt and observe where the bottom of the feeler bar has come to rest in relation to the gauge line A Ifth
42. ier assembly 6 Unscrew knob and lever assembly from base 7 Reassemble in reverse order 8 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS 2712 AND 2912 AUTOMATIC CARRIER ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING LOCKNUT AUTO ENGAGE SWIVEL LOCK CARRIER WICK WIDEST SIDE OF TAPER CARRIER AUTO ENGAGE KEY AUTOMATIC CARRIER SWIVEL 1113 2654 1 Perform AUTOMATIC CARRIER SHAFT removal steps 1 5 NOTE When the auto engage ramp is reinstalled the widest side of the taper must be away from the auto engage key 2 Remove two screws and washers to free auto engage ramp from automatic carrier NOTE When the carrier bearings are pressed into the automatic carrier they should be pressed flush with end of carrier They should be oriented for pressing as shown 3 Press carrier bearings from automatic carrier NOTE Prior to reinstalling the wick saturate it with Lubriplate FMO 200 AW 4 Pull carrier wick from inside carrier NOTE When reinstalling engage key torque screws to 21 in lbs 5 Remove two screws and lockwashers and pull auto engage key from carrier NOTE When the locknut swivel and swivel lock are installed a couple of threads of the swivel lock should be showing as an adjustment starting point for the automatic carrier assembly travel adjustment The recessed area of the locknut must face toward the swivel lock 6 Unscrew swivel lock from carrier and
43. ife cover If the above procedure does not result in satisfactory performance replace the ring guard and recheck Turn the slicer off KNIFE TOP VIEW 6 INCH STRAIGHT EDGE gt RIB OF TOP KNIFE COVER FACE OF KNIFE STRAIGHT EDGE CAN TOUCH ANYWHERE ON FACE OF NEW KNIFE CUTTING EDGE KNIFE y Y A 6 INCH STRAIGHT EDGE RIB OF TOP KNIFE COVER FACE OF KNIFE MAX 017 INCH GAP ON KNIVES THAT HAVE BEEN SHARPENED SEVERAL TIMES TOP VIEW SLICER SERVICE PROCEDURES AND ADJUSTMENTS INDEX SLIDE MECHANISM ADJUSTMENT WARNING UNPLUG UNIT BEFORE SERVICING WARNING THE KNIFE WILL BE EXPOSED AT TIMES DURING THIS ADJUSTMENT PROCEDURE EXERCISE EXTREME CAUTION WHEN WORKING NEAR THE KNIFE NOTE The index slide slide rod and anti rotation rod must be lubricated with Lubriplate 630AA for the index slide mechanism to operate properly NOTE When the index slide mechanism is properly adjusted there will be no backlash binding or skipping in the mechanism throughout its travel With the index knob at the below O position check for freeplay by grasping the gauge plate in the area shown and attempting movement of the gauge plate front to back and side to side There should be no freeplay in the index slide mechanism You will experience deflection of the gauge plate depending on the force applied but there should not be any mechanism freeplay 1
44. intenance is performed and each time the belt or pulleys are removed or replaced The POLY V BELT TENSION should be checked before alignment of the pulleys 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 2 Check POLY V BELT TENSION 3 Using a straight edge 6 scale position it as shown below The straight edge should touch the pulleys at the four points indicated sy 45 Se e ES y NS TOUCH ARNI A Ifthe pulleys are not touching the straight edge at all four points loosen the two set screws in the motor pulley and move the pulley in the required direction Tighten the set screws B Repeat steps 3 and 3A until the pulleys are aligned 4 Reassemble in reverse order step 1 5 Check unit for proper operation 38 2712 AND 2912 AUTOMATIC MANUAL SWITCH 2S ENGAGE ADJUSTMENT WARNING UNPLUG UNIT BEFORE SERVICING NOTE With the unit in manual the automatic manual switch should be operated by the actuator being centered on top of the rounded portion of the automatic carrier shaft normally open contacts of switch closed When the unit is placed in automatic the switch actuator should be on the flat portion of the automatic carrier shaft normally closed contacts closed In the manual position the automatic motor is not energized and in the automatic position the automatic motor is energ
45. ivot bearings from the transport Note the bearing locating grooves in the transport and the locating stud on the bearings 8 Remove the interlock cover by removing three SCrews 9 Unscrew the interlock bar shaft from the interlock bar and pull it out of the transport When installing the bar shaft lightly coat it with Lubriplate 630 AA 10 Pull the interlock bar and interlock bar spring from the transport When installing the bar lightly coat it with Lubriplate 630 AA 11 Pull the transport bearings from the transport 12 Pull slide rod wick from transport When installing wick lubricate with Lubriplate FMO 200 AW 13 Remove the locknuts from adjusting screws A Unscrew two adjusting screws from transport 14 Remove locking nut and overturn set screw STEP 12 STEP 11 STEP 7 13 AND 13A STEP 6 STEP 7 1102 2643 15 Remove adjusting screw roller bearing assembly by removing screw and washer 16 Reassemble in reverse order steps 15 3 NOTE The slide rod transport roller bar and carriage transport assembly must be reinstalled simultaneously 17 18 19 20 21 22 23 24 SLICER REMOVAL AND REPLACEMENT OF PARTS Install slide rod in transport assembly A Install washers and bumpers on rod B 2812 and 2912 Install transport key tool and move carriage pivot so that interlock bar on carriage transport assembly is on top of lockout bar during installation of car
46. ized 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 6 Place the unit in manual Disconnect wires Loosen two nuts holding switch to mounting bracket ey SWITCH ACTUATOR AUTOMATIC CARRIER SHAFT 1119 2661 5 Pivot the switch until the actuator is centered on the rounded portion of the automatic carrier shaft and with a meter check that the switch is operated normally open contacts closed A Tighten the nuts 6 Place the unit in automatic and confirm that switch actuator is on flat portion of shaft A With a meter check that the switch is not operated normally closed contacts closed 7 Reassemble in reverse order 8 Check unit for proper operation SLICER SERVICE PROCEDURES AND ADJUSTMENTS 2712 AND 2912 AUTOMATIC CARRIER ASSEMBLY TRAVEL ADJUSTMENT WARNING UNPLUG UNIT BEFORE SERVICING NOTE The automatic carrier assembly is properly adjusted when with the unit in automatic the transport assembly just touches the slide rod bumper when it returns to the home position 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 6 WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TESTS OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DISCONNECT POWER ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 2 Power unit NOT
47. licer Home Position Carriage Home Start The automatic drive motor will not start unless the carriage unit is at the indexing knob end of the slicer Home Position Poly V Belt driven knife Interlock Switch Prevents the continuous operation of the knife motor when the index knob is below 0 No voltage release Requires the slicer to be manually re started after a power interruption General Procedures apply to all models unless specified otherwise The Model 2812 was used for photographs unless specified otherwise SPECIFICATIONS Electrical 120 60 1 Motors Knife 1 2 H P Carriage Drive 1 8 H P 9OVDC 40RPM Cord and Plug A six foot flexible three wire cord and plug is standard equipment Thickness Adjustable to slice a thickness up to 1 Carriage Travel 12 1 2 Speed Knife speed 400 RPM Knife Sharpener Top mounted removable two stone type Weight Approx 130 Ibs Manual Models Approx 175 Ibs Automatic Models SLICER GENERAL LUBRICATION Lubriplate FMO Carriage Transport 200 AW Assembly in wick for slide rod 2712 and 2912 automatic carrier assembly in wick Lubriplate 630 AA Index Cam grooves Index mechanism slide coat slide slide rod and anti rotation rod 2812 and 2912 Interlock bar and interlock bar shaft coat No lubrication required Meat grip slide rod Motors TOOLS Tools Required Standard set of hand tools VOM with A C current te
48. lt is installed it is torqued to 57 6 in lbs 2 Remove slotted shoulder bolt to free cam handle and knob assembly from housing base 3 SLICER REMOVAL AND REPLACEMENT OF PARTS Remove two screws to free sharpener housing base from sharpener housing mount assembly SLOTTED SHOULDER BOLT PP E a SHARPENER HOUSING BASE SHARPENER HOUSING 4 O 6 SHARPENER HOUSING MOUNT ASSEMBLY Reassemble in reverse order Adjust SHARPENER Check unit for proper operation MOUNT ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 2 3 Remove the KNIFE Remove SHARPENER HOUSING BASE Remove screw to free housing mount from Knife ring guard KNIFE RING GUARD _ SHARPENER HOUSING MOUNT ASSEMBLY 29 4 Remove KNIFE DRIVE MOTOR steps 1 5A NOTE When the sharpener housing mount assembly is installed a bead of RTV 732 should be run around the outline to seal part to base 5 Remove two screws holding housing mount to base A 6 Reassemble in reverse order 7 Adjust POLY V BELT TENSION and SHARPENER 8 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS KNIFE RING GUARD WARNING UNPLUG UNIT BEFORE SERVICING 1 2 3 4 Remove KNIFE Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 Remove scre
49. on off knob from switch rod bracket and hole in base 5 Reassemble in reverse order 6 Check unit for proper operation 3 Pull on off switch and bracket assembly from on off knob SLICER REMOVAL AND REPLACEMENT OF PARTS the lamp A Pull th from th tof LAMP 1 PL ull the speed nut from the bezel to free WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove ON OFF Knob NOTE A new label pull to start push to stop must be installed when the lamp is replaced 2 Remove pull to start push to stop label from index bezel to expose two of the bezel mounting screws 3 Remove INDEX KNOB AND DIAL to expose the other two index bezel mounting screws B Pull the lamp from the bezel 6 Reassemble in reverse order 7 Check unit for proper operation SLIDE ROD WARNING UNPLUG UNIT BEFORE SERVICING LAMP 4PL 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A 2 2812 and 2912 using the transport key tool A Remove the screws move carriage transport assembly to middle of slide rod away from interlock switch 4 Disconnect the lamp wires 3 Remove nine screws holding transport roller NOTE When the index bezel is installed RTV 732 bar to base and pull roller bar sideways to should be on the inside groove outline where it remove meets the base j TRANSPORT ROLLER BAR 5 Pull the index
50. ot to damage the outside diameter of the pulley 10 SLICER REMOVAL AND REPLACEMENT OF PARTS B Lightly tap shaft upward to allow room for A Start pulley washer and nut removal of the pulley B Install assembly to base key C Lightly tap the pulley from the shaft If the pulley cannot be removed by lightly tapping C Start two screws and lockwashers through use a puller to pull pulley from shaft the lower hub and bearing retainer but do not tighten 6 Pull lower hub and bearing retainer from shaft and remove retaining ring D Complete installation of pulley by tightening the washer and nut LOCKWASHERS gt RETAINING RING l we E 5 Pull the lower hub and bearing retainer and make sure the top bearing is completely seated in its housing A Tighten the two mounting screws while holding the lower hub and bearing retainer nn in position LOWER HUB AND BEARING RETAINER 6 Reintall the knife shaft ring and knife leaving the top knife cover off A Press bearing from lower hub and bearing retainer 7 Verify there is no end play in knife shaft by pulling upwards from back side of knife and then 7 Lightly tap shaft upward and pull shaft assembly pushing downward on face of knife If end play is and bearing from base and deflector mount present steps 5 5A and 7 must be repeated A Remove bearing from shaft 8 Check HEIGHT OF KNIFE RING GUARD TO KNIFE FACE Installation 9 Install knife drive moto
51. pring cannot pull back A Tighten anti rotation rod mounting screws B Slowly loosen the anti rotation rod clamp screw to a point where the spring suddenly pulls back Do not tighten or loosen this screw anymore 10 Reassemble in reverse order of Disassembly steps 9C 1 11 Adjust Gauge Plate and Index Knob 12 Check unit for proper operation INDEXING CAM WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove INDEX MECHANISM SLIDE SUPPORT ASSEMBLY steps 1 9C NOTE In order to remove the rollpin in the cam the index knob has to be turned so pin will clear the base 2 Drive rollpin from cam NOTE When the indexing cam is installed the grooves should be lubricated with Lubriplate 630 AA 3 Pull index knob shaft assembly outward until cam and two washers are freed from the cam shaft 4 Reassemble in reverse order 5 Adjust GAUGE PLATE AND INDEX KNOB 6 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS INDEX BEZEL WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove INDEXING KNOB DIAL ASSEMBLY steps 1 5 Remove LAMP 1PL Pull the bezel from the cam shaft Reassemble in reverse order ye A A Adjust GAUGE PLATE AND INDEXING KNOB 6 Check unit for proper operation INDEXING KNOB DIAL ASSEMBLY CAM SHAFT ASSEMBLY Removal WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove indexing knob by removing screw in center NOTE
52. pull automatic carrier swivel from carrier A Unscrew swivel locknut from carrier 32 7 Reassemble in reverse order steps 6 1 except do not perform step 1 of AUTOMATIC CARRIER SHAFT 8 Adjust AUTOMATIC CARRIER ASSEMBLY TRAVEL 9 Reassemble in reverse order AUTOMATIC CARRIER SHAFT step 1 10 Check unit for proper operation 2712 AND 2912 AUTOMATIC DRIVE LINKAGE ASSEMBLIES WARNING UNPLUG UNIT BEFORE SERVICING CARRIER LINK ASSEMBLY a MAIN LINK ASSEMBLY A 4 Y MOTOR DRIVE LINK pS p AU adean n i SE s 4 MOTOR CRANK L LINK ASSEMBLY SCREW 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS step 1 6 2 Remove retaining ring s A Motor crank link assembly remove screw 3 Pull assembly off A Remove bearing s 4 Reassemble in reverse order pressing bearing s in place 5 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS 2712 AND 2912 AUTOMATIC MANUAL SWITCH 2S ENGAGE WARNING UNPLUG UNIT BEFORE SERVICING 1 2 3 gt T Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 6 Loosen two screws holding switch mounting bracket to base A Slide mounting bracket sideways on automatic carrier shaft until wires switch nuts and screws can be accessed Disconnect wires from switch AUTOMATIC MANUAL SWITCH 2S ad NUTS AND
53. r adjusting POLY V 1 Press top bearing on shaft and install the BELT TENSION and check PULLEY retaining ring ALIGNMENT 2 Reinstall the shaft through the deflector mount 10 Reinstall top knife cover and the base 11 Check unit for proper operation 3 Install the lower hub and bearing retainer on shaft and slide it against the retaining ring A Apply Loctite primer part no 544434 2 and Loctite 638 part no 547280 between the shaft and the bearing so they rotate as a unit after assembly 4 Start the pulley onto the shaft with the counterbored hub toward the lower hub and bearing retainer by lightly tapping pulley COUNTERBORED SIDE TOWARD THE LOWER HUB AND BEARING RETAINER SLICER REMOVAL AND REPLACEMENT OF PARTS DEFLECTOR MOUNT WARNING UNPLUG UNIT BEFORE SERVICING 1 2 3 Remove the KNIFE Remove the KNIFE DRIVE MOTOR Remove two screws holding the motor start switch bracket to the base and move the bracket assembly to the side NOTE When the deflector mount is installed RTV 732 should be on the bottom where it meets the base 4 Remove the three screws holding the deflector mount to the base Reassemble in reverse order adjusting the POLY V BELT TENSION and check PULLEY ALIGNMENT Check unit for proper operation 12 2612 AND 2812 BASE COMPONENT ACCESS WARNING UNPLUG UNIT BEFORE SERVICING Turn index knob to below 0 position
54. r bearing assembly from adjusting screw E ROLLER BEARING ASSEMBLY 3 ADJUSTING SCREW 255 620 3 Reassemble in reverse order 4 Check CARRIAGE TRANSPORT ASSEMBLY adjustment 5 Check unit for proper operation TRAY SUPPORT ASSEMBLY KNOB WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform CARRIAGE TRAY ASSEMBLY removal steps 1 3A 2 Remove knob assembly by removing retaining ring and pulling from support arm 3 Reassemble in reverse order 4 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS CARRIAGE TRANSPORT ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING Remove SLIDE ROD Remove transport key tool Lift transport assembly from base 2712 and 2912 remove AUTOMATIC ENGAGE PAWL ASSEMBLY Remove two screws holding transport cover to transport a Prey TRANSPORT COVER s 3 Soe ess a 4 a Rae h SCREWS R K 1125 2667 6 Press on the end of interlock bar until the tiltable carriage pivot can be rotated to be disengaged from the bar shaft A Disengage carriage pivot TILTABLE CARRIAGE PIVOT m t pana A UNEN Vd SS Y r agu 3 eke 7 gt 1100 2641 INTERLOCK BAR SHAFT B Rotate legs to vertical position and slide tiltable carriage pivot sideways from transport NOTE When reinstalled the flat side of the legs must end up against the machined surface of the transport 20 7 Pull the p
55. rator end of gauge plate 40 H Turn indexing knob clockwise to the stop position Gauge plate should now be a min of 010 above cutting edge of knife between the upper and lower ribs The upper and lower extensions may be a maximum of 030 above the knife PS UPPER EXTENSION 1030 MAX 010 MIN 303 668 Check the gap of the gauge plate to the knife at the horizontal centerline max 046 and at the tips min 015 These dimensions can be present if a min diameter knife 11 1 2 or larger is present MIN KNIFE DIA 11 1 2 MAX 046 GAP OF GAUGE PLATE TO KNIFE Adjustments NOTE If any adjustments are made checks 1A through 11 must be performed WARNING UNPLUG UNIT BEFORE SERVICING 1 Gauge plate NOTE If after performing the GAUGE PLATE AND INDEXING KNOB CHECKS dimensional adjustments are required do the following A Perform GAUGE PLATE AND INDEXING KNOB CHECKS steps 1 1E SLICER SERVICE PROCEDURES AND ADJUSTMENTS NOTE Adjusting the proper combination of the four adjusting screws in the back of the gauge plate or loosening the gauge plate mounting screws to move it nearer or further away from the knife will bring a given dimension within the required tolerance The four adjusting screws should be viewed as being used as shims to achieve the required dimension s The screws are interacting with the special mount for the gauge plate Before making an
56. reverse order 5 Check unit for proper operation SLICER SERVICE PROCEDURES AND ADJUSTMENTS SERVICE PROCEDURES AND ADJUSTMENTS CARRIAGE TRANSPORT ASSEMBLY ADJUSTMENTS NOTE The carriage transport assembly is adjusted properly when the 2812 and 2912 interlock bar clears the bottom of the pivoting interlock plate assembly by 005 to 020 when in the locked position The interlock bar clears the edge of the lockout bar during carriage movement by a maximum of 030 but with no interference The overturn screw is within 003 to 005 of the transport roller bar These adjustments should be performed in the order of this writeup and all should be checked anytime an adjustment is made After the transport assembly is adjusted properly check the carriage tray adjustments WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A 2 2812 and 2912 Loosen the four screws holding the lockout bar to the base A Lift the lockout bar upward to its highest position and tighten the four screws 3 2812 and 2912 To adjust the interlock bar clearance of 005 to 020 to the bottom of the pivoting interlock plate assembly position the Carriage transport assembly in the home and locked tilted position PIVOTING INTERLOCK PLATE ASSEMBLY 005 TO 020 CLEARANCE A A INTERLOCK BAR BOTTO
57. rews A Remove belt pulley from shaft Tn an STEP GA ay AR j de i 239 604 Note location and type of washers with screws relationship of motor plate to motor leads and remove three screws to free motor plate from motor NOTE It is recommended that the motor gasket be replaced anytime the motor is replaced When installing a new motor gasket peel the backing off before installation 8 Reassemble in reverse order steps 7 5 9 Reinstall poly V belt 10 Adjust POLY V BELT TENSION and check PULLEY ALIGNMENT 11 Continue reassembly in reverse order steps 3 1 2812 and 2912 INTERLOCK SWITCH 1LS WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 2 Remove PIVOTING INTERLOCK PLATE ASSEMBLY 3 Note the routing of the switch wires to the switch bracket and remove two screws to free interlock switch switch bracket assembly from base 1096 2637 SLICER REMOVAL AND REPLACEMENT OF PARTS 4 Remove two screws switch and two spacers from switch bracket 5 Reassemble in reverse order steps 4 2 6 Check 2812 and 2912 INTERLOCK SWITCH ADJUSTMENT 7 Reassemble in reverse order step 1 8 Check unit for proper operation 2712 HOME SWITCH 1LS 2812 AND 2912 HOME START SWITCH 2LS AND RESET SWITCH 3LS
58. riage transport assembly C Reinstall carriage transport assembly slide rod to the base with square flats on slide rod toward base starting the two mounting screws leaving them loose THIS FLAT AWAY FROM BASE D Reinstall the transport roller bar using nine SCrews E Tighten the slide rod mounting screws Adjust CARRIAGE TRANSPORT ASSEMBLY Place unit upright Reinstall KNIFE SHARPENER Remove transport key tool Reinstall CARRIAGE TRAY ASSEMBLY Adjust CARRIAGE TRAY ASSEMBLY Check unit for proper operation GAUGE PLATE ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove KNIFE 2 Remove hole plugs in gauge plate assembly 3 Remove two screws and washers to free gauge plate from special mount __ SCREWS AND WASHERS IN A Pull gauge plate upward from special mount 4 Reassemble in reverse order 5 Adjust GAUGE PLATE AND INDEX KNOB 6 Check unit for proper operation SLICER REMOVAL AND REPLACEMENT OF PARTS PIVOTING INTERLOCK PLATE ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 8 and 8A 2 2812 and 2912 Using the transport key tool release the carriage transport assembly and move to the side 3 Disconnect the pivot plate spring from the plate assembly 4 Remove pivot plate clips by removing two S
59. sition plug the slicer in and turn it on NOTE The machine should stay on because the interlock switch is not actuated 4 Slowly turn the switch actuating screw until the switch is actuated and slicer is turned off A Turn the actuating screw one more full turn 5 Check that turning the index knob to O or below O shuts the slicer off A If it does not adjust the INDEX KNOB B Unplug slicer 6 Reassemble in reverse order step 1 Check unit for proper operation SLICER ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT FUNCTION 2612 and 2712 On Off Switch 1S Controls electrical power to knife motor 2812 and 2912 On Off Start Switch 1S Three position switch which controls the electrical power to the relay 1CR Motor starts when switch is pulled against spring returns to run position when released Lamp 1PL Will be on whenever On Off switch is in the ON position and knife motor is operating Capacitor CAP The capacitor shifts electrical phase between the start and run windings so the knife motor will start in the proper direction Knife Motor 1MTR Drives the slicer knife 2712 AND 2912 Automatic Motor 2MTR Drives the automatic linkage Electronic Start Switch Provides path to start windings during start up of knife motor 2812 and 2912 Interlock Switch 1LS Prevents the op
60. ster any quality VOM with a sensitivity of at least 20 000 ohms per volt can be used Special Thrust Plug Gauge Part No 438750 Used to set the height of the thrust plug in the knife retaining screw Drive belt tension gauge Part No 477756 2712 and 2912 Field Service Grounding Kit TL 84919 2812 and 2912 Transport Key Tool Part No 478446 Inserted into carriage transport assembly to allow movement during times when the carriage tray unit is removed but the carriage transport assembly needs to be moved for removal or adjustment of parts TRANSPORT KEY TOOL Transport Key Tool Installation Instructions 1 Insert angled end of tool into tiltable carriage pivot near center and align tool with tapped hole in transport assembly 2 Screw the tool fastener into the hole until the interlock is released Thin 3 4 wrench 2 required Part No TL 17229 1 These wrenches are required for removal installation of nuts on the indexing cam shaft Special 5 32 Allen wrench A standard Allen wrench altered to the dimension shown Used to loosen tighten adjusting screw roller bearing gt STANDARD 5 32 ALLEN WRENCH ALTERED TO DIMENSION SHOWN TSP1004C 004C SLICER REMOVAL AND REPLACEMENT OF PARTS REMOVAL AND REPLACEMENT OF PARTS NOTE Many procedures state the carriage transport assembly should be moved to home position The carriage transport assembly is in home position when it is pulled all the
61. t the time delay A 120VAC should be present across 1TDR 2 3 for approximately 10 seconds after the magnet has passed 3LS Es 1 If time delay does not reset F KNIFE RING GUARD i O EI disconnect the lead wire from 3LS to Y A 1TDR 6 Check for voltage across PE 1TDR 3 and lead wire to 3LS when Y the magnet is in front of 3LS a If voltage is present replace 1TDR b If voltage is not present check circuit which includes 3LS 120 VAC gt gt FROM 2LS DURING START 1CR 8 DURING RUN 150 MAX TO 100 MIN FROM KNIFE FACE TO TOP OF KNIFE RING GUARD 3 SHUT OFF Lae 3LS TIME DELAY L 4 5 SWITCH RELAY 1TDR a TSP968C 4 Reinstall TOP KNIFE COVER 5 Check unit for proper operation 44 SLICER SERVICE PROCEDURES AND ADJUSTMENTS KNIFE SHARPENER TO KNIFE POSITIONING NOTE The relationship of the knife sharpener to the knife is correct when the distance to the knife as determined by measuring from the back face of the grinding wheel to the front of the housing and stud assembly is 3 4 with the sharpener handle horizontal and pulled forward until it stops with the leading edge of the grinding wheel against the knife and the following edge towards operator end of slicer is 5 64 from the knife flatness to the knife WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove TOP KNIFE COVER 2 Remove sharpener cover and plate assembly by removing two scr
62. tion SLICER REMOVAL AND REPLACEMENT OF PARTS CORD AND PLUG ASSEMBLY WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 5 and 8 8B 1 2 Note location of cord and plug assembly wires and disconnect them NOTE When tightening retaining nut hand tighten only to a tightness that doesn t allow the cord to move in the strain relief when pulled on 3 Loosen outside retaining nut of strain relief Pe RETAINING NUT ad 4 Pull cord and plug and strain relief from base 5 Reassemble in reverse order 6 Check unit for proper operation RELAY 1CR WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 and 2812 BASE COMPONENT ACCESS or 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS STEPS 1 5 AND 8 8B 1 2 Remove screw to free wire clamp from motor start switch bracket 3 Loosen bottom screw in motor start switch bracket A Remove top screw in switch bracket i SESSIE START f _ gt MOTOR START SWITCH amp BRACKET B Lift relay upward to free relay from switch bracket 4 Note location of relay wires and disconnect them 5 Reassemble in reverse order 6 Check unit for proper operation ELECTRONIC START SWITCH WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2612 AND 2812 BASE COMPONENT ACCESS or 2712
63. top cover C Release the knob and the half moon cut out should return to approximately 5 o clock looking at the back of the top cover Reinstall the top knife cover Check for proper operation of the top knife cover latch FRONT VIEW SLICER REMOVAL AND REPLACEMENT OF PARTS KNIFE WARNING UNPLUG UNIT BEFORE SERVICING WARNING THE SLICER KNIFE IS VERY SHARP EXERCISE EXTREME CAUTION WHEN WORKING NEAR THE KNIFE 1 2 3 4 5 6 7 Remove CARRIAGE TRAY ASSEMBLY Remove the TOP KNIFE COVER Remove DEFLECTOR 2812 and 2912 Install the transport key tool and release the gauge plate interlock Turn the indexing knob fully counterclockwise Tape the exposed knife edge as shown Using a 1 1 8 wrench remove the knife screw by turning it counterclockwise NOTE If necessary give the wrench handle a sharp blow with a hammer to loosen it DO NOT TRY TO HOLD THE BLADE BY HAND 8 9 Carefully grasp the edges of the knife with both hands and with a slight rocking motion loosen the knife and remove from the machine Reassemble in reverse order NOTE When the knife is replaced A Check clearance between knife and gauge plate Fit of top knife cover Height of knife ring guard to knife face Check that the outside diameter does not rub the inside diameter of the ring guard Refer to GAUGE PLATE AND INDEXING KNOB TOP KNIFE COVER FIT
64. ve the screw and star washer from the cover latch knob to separate it from the cover latch Installation 1 Insert cover latch through the top cover with the flat spot of the latch 180 from the stop pin in the top cover and hold in place 2 Place the spring over the stem of the latch with the end of the spring hooked behind the stop pin 3 Place the knob over the spring with the end of the spring against the leading edge of the spring retaining step 4 While preventing the latch from turning turn the knob counterclockwise until the spring retaining step clears the stop pin and the flat spot on the latch stem aligns with the one in the knob NOTE When turning the knob you must negotiate the spring retaining step above the stop pin 5 Install the Phillips head screw with the star washer under the screw head to secure the knob and latch NOTE Use a No 1 Phillips driver to tighten screw A Torque the screw to 10 12 in lbs BACK VIEW HALF _ MOON CUT OUT OP KNIFE COVER LATCH Es LEADING EDGE 6 HOOK SPRING SPRING PRI BEHIND STOP PIN TOP KNIFE COVER LATCH l To check A The latch should be in the latched position the half moon cut out at approximately 5 o clock position looking at the back of the top cover B Turn the knob counterclockwise until it stops and hold in position The half moon cut out should be at approximately 1 o clock looking at the back of the
65. w 1 16th to 1 8th turn beyond this point 35 017 N lt gt Turn slicer on Lay a six inch straight edge on a rib near the center of the top knife cover and slowly move it toward the knife until the straight edge touches the face of the knife or the leading end of the straight edge extends beyond the cutting edge of the knife A Ifthe straight edge touches repeat step 5 on ribs at the top and bottom ribs of the top knife cover B Ifthe straight edge does not touch the face of the knife at the test point turn the slicer off and verify that the thrust plug height has been adjusted properly as outlined under THRUST PLUG ADJUSTMENT 1 Ifthe thrust plug is not properly adjusted adjust it and repeat steps 3 through 5 2 Ifthe thrust plug is properly adjusted and the top knife cover is properly installed determine the diameter of the knife A new knife should be 11 3 4 A knife less than 11 1 2 should be replaced a Ifthe knife is new the straight edge must touch the face of the knife If the straight edge does not touch the face of the knife replace the top knife cover b Ifthe diameter of the knife is greater than 11 1 2 but less than 11 3 4 the straight edge may not touch the face of the knife The leading end of the straight edge should never be more than 017 above the cutting edge of the knife If the straight edge is more than 017 above the cutting edge of the knife replace the top kn
66. w to free knife ring guard from sharpener housing mount assembly Ae Bi 4 al G y E RRULES ai W gt _ KNIFE RING GUARD Remove two screws to free ring guard from base A Pull ring guard ferrules from ring guard NOTE When knife ring guard ferrule assembly is installed RTV 732 should be on the bottom outline of the ferrules O 6 7 Reassemble in reverse order Check HEIGHT OF RING GUARD TO KNIFE FACE Check unit for proper operation 30 2712 AND 2912 AUTOMATIC MOTOR MOTOR BRUSHES WARNING UNPLUG UNIT BEFORE SERVICING 1 Perform 2712 and 2912 UPPER BASE AND AUTOMATIC BASE COMPONENT ACCESS steps 1 6 8 and 8A 2 To replace motor brushes unscrew two hole plugs and pull brushes from rear motor cover 3 To replace motor disconnect motor wires in speed selector switch cavity and pull them from half grommet 4 Loosen screw in motor crank link assembly MOTOR DRIVE LINK v _ ASSEMBLY i 4 oe sa MOTOR CRANK LINK ASSEMBLY 1108 2649 5 Remove retaining ring where carrier link assembly is attached to the main link assembly A Pull motor crank link carrier link assemblies from main link assembly and automatic motor shaft 6 Remove four Allen screws and pull automatic motor from base ie N Y met as m y ANA Ka Pd q e a pt ty 1 A ALLEN SCREWS SLICER REMOVAL AND REPLACEMENT OF PARTS 7 Reassemble in reverse order placing the end of
67. way to the operator end of the slicer KNIFE SHARPENER WARNING UNPLUG UNIT BEFORE SERVICING 1 Remove the sharpener by pushing the locking lever to the left Tilt the right side up clearing the right guide pin then lift the sharpener up clearing the left guide pin NOTE The disassembly write up will follow the illustration shown Remove only those parts required to access the part s being replaced 2 Remove two screws 1 to remove cover and plate assembly 2 Remove retaining ring 27 to free the truing arm and pusher rod assembly 21 from the actuator 4 A The truing arm spring 26 can now be removed Remove screw 3 so actuator 4 and spring 5 can be pulled from housing and stud assembly 9 If just replacing the grinding wheel 11 place a screw driver blade in the end of the grinding wheel shaft 10 and unscrew R H retaining screw 12 NOTE When reinstalling retaining screw 12 Loctite No 222 must be used on the threads 6 Remove retaining ring 24 and pull the grinding wheel shaft 10 grinding wheel 11 and retaining screw 12 from the plunger and ball bearing assembly 6 A Remove the grinding wheel as outlined in step 5 Plunger and ball bearing assembly 6 and return spring 8 can be pulled from the housing and stud assembly 9 A The ball bearings 7 can be removed from the plunger and ball bearing assembly 6 When the bearings are reinstall
68. y adjustments determine which screws need to be loosened so the appropriate screws can be tightened This will prevent distortion of the gauge plate mount Example Gauge plate is not a min of 010 above the knife at below O position of knob Loosen the two screws toward the knife and tighten the two screws toward the index knob A gt _ SCREWS AND WASHERS B Adjust gauge plate and perform GAUGE PLATE AND INDEXING KNOB CHECKS Continue steps 2A and 2B until properly adjusted 2 Indexing knob A If indexing knob is out of adjustment 1 Place straight edge on knife edge in two places near horizontal center and bring gauge plate up to just contact straight edge 41 NOTE A maximum of 1 16 gap is allowed at the MAXIMUM OF 1 16 BETWEEN GAUGE PLATE AND STRAIGHT EDGE 2 Remove knob and remove the silicone holding the dial and knob together 3 Apply silicone RTV 732 to the dial and knob and install the assembly tightening to a point where the dial can be moved 4 Move the dial to O position and tighten 5 Turn indexing knob clockwise to the stop position The gauge plate should be a min of 010 above cutting edge of knife To check place a 010 feeler gauge on top of knife between the upper and lower ribs of the gauge plate The gauge plate should be even with or above the feeler gauge on the knife 3 Indexing knob dial assembly gap to index bezel NOTE When the index knob d

HOBART 2912 SLICER SERVICE MANUAL

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