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Lincoln 1921 manual

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Table of contents for the manual

  • Page 1

    DTFs vcman REV 1/5/07 SER VICE M ANUA L DUAL TECHNO LOGY FI NISHER MODEL 1920 SERIES Lincoln Foo dservice Products, LLC 1111 North Hadley Road Fort W ayne, Indiana 46804 United States of America Phone : (800) 374 -3004 U.S. Fax: (888 ) 790-8193 • Int’l Fax: (260 ) 436-0735 Technical Service Hot Line (800) 6 78-9511 www.lincolnfp. com[...]

  • Page 2

    DTF – 1920 Series Ser vice Manual 2 SEQUENCE OF OPERA TION DUAL TECHNOLOGY FINISHER 1921 208VAC 60 HZ. 3 PHASE 1922 240VAC 60 HZ. 3 PHASE POW ER SUPPLY Electrical po wer to be s upplied to t he oven b y a four conductor service f or three ph ase. Black conduc tor is hot. Red conductor is hot. Orange con ductor is hot Green cond uctor is groun d. [...]

  • Page 3

    DTF – 1920 Series Ser vice Manual 3 SCHEMATIC DI A GR AM MODEL 1921 S/N 8001207 and Below[...]

  • Page 4

    DTF – 1920 Series Ser vice Manual 4 SCHEMATIC DI A GR AM MODEL 1922 S/N 8001207 and Below[...]

  • Page 5

    DTF – 1920 Series Ser vice Manual 5 SCHEMATIC DI A GR AM MODEL 1921 / 1922 S/N 8001208 a nd Above[...]

  • Page 6

    DTF – 1920 Series Ser vice Manual 6 TROUBLESHOOTING GUIDE 1921 208 VAC 60 HZ. 3 PHASE 1922 240 VAC 60 HZ. 3 PHASE SYMPTO M POSSIBLE CAUSE EVALUAT ION Oven fan wi ll not run Incom ing power suppl y Check circuit break ers. Reset if requ ired. Ca ll power co. if needed. Fuses, 10 Amp, m otor and controls Check , replace if neces sary. Fuse holder C[...]

  • Page 7

    DTF – 1920 Series Ser vice Manual 7 Control transf orm er Check for 208/240VAC suppl y to the prim ary of the control trans former . If no voltage is present, tr ace wiring bac k to the m ain power switc h. If voltage is present, ch eck for 24VA C at the tr ansform er secondar y. If there is prim ar y voltage, but no s econdary voltage, rep lace [...]

  • Page 8

    DTF – 1920 Series Ser vice Manual 8 a digital m ultimeter. The elem ent resistance should be as follo ws: 208V – 43 o hms approx. 240V – 57 o hms approx. Replace heat ing elem ents as nee ded. No Infrared H eating Main fan m otor Check for main f an operation. If it is not operating, r efer to “Oven f an will not run” . Air pressure s wit[...]

  • Page 9

    DTF – 1920 Series Ser vice Manual 9 Switch, Main Power W ITH POW ER OFF: Check c ontinuity bet ween switch term inals. Replace s witch as needed. Control transf orm er Check for supply voltag e to the prim ar y of the c ontrol transform er. If no voltage is present, trace wiring back to the oven power rela y. If voltage is present, c heck f or 24[...]

  • Page 10

    DTF – 1920 Series Ser vice Manual 10 REMOVAL, INSTALLA TION A ND ADJUSTMENT DUAL TECHNOLOGY FINISHER CAUTION! BEFORE RE MOVING OR INSTALLING ANY COMP ONENT IN THE DUAL TECHNOLOGY FINISHER, B E SURE TO DISCONNECT T HE ELECTRICAL POWER SUPP LY. MOTOR, MAIN F A N - REP LACEMENT 1. Shut off po wer at main breaker. 2. Remove conveyor and finger assemb[...]

  • Page 11

    DTF – 1920 Series Ser vice Manual 11 CIRCUIT BRE AKER, MA IN MO TOR - REPLACEMENT 1. Shut off po wer at main breaker. 2. Remove rea r cover. 3. Remove wires f rom appropriate circuit brea ker and mark wires for reassembly. 4. Remove mount ing nut from circuit breake r and remove circuit brea ker. 5. Reassemble in reverse order and check system op[...]

  • Page 12

    DTF – 1920 Series Ser vice Manual 12 CAPACITOR, CONVE YOR MOTOR – REPL A CEMENT 1. Shut off po wer at main breaker. 2. Remove contro l box top. Remove tube from air pressure switch. 3. Remove wiring from air pressure switch a nd conveyor motor capac itor and mark all wires fo r reassembly. 4. Remove two screws an d remove air pre ssure switch/c[...]

  • Page 13

    DTF – 1920 Series Ser vice Manual 13 THERMOC OUPLE ME ASUREMENT TEMPERAT URE ( ° F) D.C. MILLI VOLTS 200 ° 2.8 250 ° 4.0 300 ° 5.1 350 ° 6.0 400 ° 7.1 450 ° 8.2 500 ° 9.3 550 ° 10.4 600 ° 11.5 THERMOSTAT, HI-LIMIT – REPLACEMENT 1. Shut off po wer at main breaker. 2. Remove rea r cover, remove right side heating element cover. 3. Remov[...]

  • Page 14

    DTF – 1920 Series Ser vice Manual 14 voltage (120/240 ) and frequency (50Hz./60 Hz.). After the ne w control is installed, the control will need to be initialized. To initia lize the new control, p ress and hold the two center buttons on the front control panel. After the oven sta rts, release the but tons, the control is now initialized. Rea sse[...]

  • Page 15

    DTF – 1920 Series Ser vice Manual 15 This page in tentionally left blank.[...]

  • Page 16

    DTF – 1920 Series Ser vice Manual 16 GENERAL VIEW MODEL 1921, 1922 A 370438 Finger housing, lower B 370441 Columnating plate, lo wer C 370443 Finger cover, lower left. Ma rked ‘LS’ D 370444 Finger cover, lower right. Ma rked ’RS’ E 370445 Front element cover F 370446 Front cover G 370447 Finger cover, upper H 370442 Columnating plate, upp[...]

  • Page 17

    DTF – 1920 Series Ser vice Manual 17[...]

  • Page 18

    DTF – 1920 Series Ser vice Manual 18 CONTROL BOX VIEW MODEL 1921, 1922 A 369432 Switch, on/off B 370456 Label, control panel C 370457 Front panel D 369460 Spring, compression E 369413 Drive key F 369410 Coupling sleeve G 370106 Washer H 350259 Screw I 370458 Heating element, Infrared – 2 08VAC 370460 Heating element, Infrared – 2 40VAC J 3704[...]

  • Page 19

    DTF – 1920 Series Ser vice Manual 19[...]

  • Page 20

    DTF – 1920 Series Ser vice Manual 20 REAR VIEW MODEL 1921, 1922 A 370466 Timer, cool down, 30 minu te B 369422 Relay, main fan C 370467 Thermocouple D 370468 Cover, heating element E 370469 Motor mount F 370470 Motor, main fan S/N 800120 7 and Below 4060485 Motor, main fan S/N 8001208 and Abo ve G 370468 Cover, heating element H 370471 Cooling fa[...]

  • Page 21

    DTF – 1920 Series Ser vice Manual 21[...]

  • Page 22

    DTF – 1920 Series Ser vice Manual 22 CONVEYOR MODEL 1921, 1922 S/N 8001199 and B elow A 370477 Crum b pan, right B 370478 Crum b pan, left C 370440 Fra me, conveyor D 370479 B elt, conveyor E 370480 B racket, conveyor bearing F 370481 Fla nged bearing, co nveyor G 370482 S haft, idler H 369515 Dri ve sprocket I 369952 Co nnecting link, co nvey or[...]

  • Page 23

    DTF – 1920 Series Ser vice Manual 23 CONVEYOR MODEL 1921, 1922 S/N 8001200 and A bove A 370477 Crum b pan, right B 370478 Crum b pan, left C 370529 Fra me, conveyor D 370479 B elt, conveyor E 370480 B racket, conveyor bearing F 370481 Fla nged bearing, co nveyor G 370482 S haft, idler H 369515 Dri ve sprocket I 369952 Co nnecting link, co nvey or[...]

  • Page 24

    DTF – 1920 Series Ser vice Manual 24[...]