Instruction/ maintenance manual of the product 1921 Lincoln
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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.
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.
DTF – 1920 Series Ser vice Manual 3 SCHEMATIC DI A GR AM MODEL 1921 S/N 8001207 and Below.
DTF – 1920 Series Ser vice Manual 4 SCHEMATIC DI A GR AM MODEL 1922 S/N 8001207 and Below.
DTF – 1920 Series Ser vice Manual 5 SCHEMATIC DI A GR AM MODEL 1921 / 1922 S/N 8001208 a nd Above.
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.
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.
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.
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.
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.
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.
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.
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.
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.
DTF – 1920 Series Ser vice Manual 15 This page in tentionally left blank..
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.
DTF – 1920 Series Ser vice Manual 17.
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 36.
DTF – 1920 Series Ser vice Manual 19.
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 mo.
DTF – 1920 Series Ser vice Manual 21.
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.
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.
DTF – 1920 Series Ser vice Manual 24.
An important point after buying a device Lincoln 1921 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lincoln 1921 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lincoln 1921 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lincoln 1921 you will learn all the available features of the product, as well as information on its operation. The information that you get Lincoln 1921 will certainly help you make a decision on the purchase.
If you already are a holder of Lincoln 1921, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lincoln 1921.
However, one of the most important roles played by the user manual is to help in solving problems with Lincoln 1921. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lincoln 1921 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
