TR Instruction Manual - Dover Flexo Electronics, Inc

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4.2 LUBRICATIONThe bearings are lubricated at the factory with a high quality light grease. However, they should be regreasedperiodically because all greases lose their lubricating ability with use and time.1. PROCEDUREThe grease fittings are a flush-to-the surface type. (See Figure 9 for location and for housing capacity).Use a hand operated push-type grease gun and fill the housing only 1/3 to 1/2 full. Too much greasewill increase friction, causing the transducer roll to turn hard. It also causes churning, resulting inseparation of the grease components, breakdown in lubricating value and excessive temperature. It iscommonly known that grease life is halved with every 25°F (14° C) increase in temperature and isdoubled with every 25°F (14° C) reduction in temperature.SIZE 1SIZE 2GREASE CAPACITY0.5 oz (15 cc)1.5 oz. (45 cc)2. RECOMMENDED GREASEFigure 9 - GREASE FITTING LOCATIONThe grease should be a non-fibrous NLGI No.2 grade. The thickener should be a lithium or lithiumcomplex soap for resistance to water and high temperature. Greases with a polyurea or aluminumcomplex thickener may also be suitable. In any case, the maximum rated operating temperature of thegrease should be at least 250°F (121°C). The following are some that meet these requirements.MOBIL Mobilith AW2SHELL Darina 2KEYSTONE 81EP-2 and Zeniplex 2TEXACO Premium RBLUBRIPLATE 630-2 and 1200-2CHEVRON SRI-2(DOVER FLEXO ELECTRONICS uses MOBIL Mobilith AW2)3. LUBRICATION SCHEDULEThe bearings should be re-lubricated periodically. How often depends on the speed and operatingtemperature of the bearing. These are different for every application, so it is not possible to offer asingle recommendation for every case. Nor is it likely that the bearing temperature can be easily orwillingly obtained. So, since it is probably better to re-grease more often than necessary than to not doit often enough, we recommend re-greasing every six months of single-shift per day operation. Moreoften if speeds and temperatures are higher than normal. (Recall the effects of high temperaturementioned in Section 4.2.1 above.) If there is an established lubrication schedule for the other bearingson the machine it should be satisfactory for the transducer bearings as well.12
4.3 DISASSEMBLY AND REASSEMBLYNOTE: Following are some procedures for servicing your tension roll. It is highly recommended that thetension roll be returned to Dover for proper service and maintenance. Warranty will be void if unit isdisassembled before five year warranty expires unless specific permission is given by DFE’s TechnicalService Manager.1. TOOLS REQUIRED1. Socket head screw hex keysSCREW SIZE KEY SIZE (inch) TRANSDUCER SIZE & LOCATION OF USEM2 x 0.4 0.058 (1.5mm) Size 1: Bearing RetainerM3 x 0.5 Button 0.078 (2mm) Size 1: Electrical ConnectorM4 x 0.7 Set Screw 0.078 (2mm) Size 1: End Cover4-40 Button 0.0625 (1/16) Size 2: Electrical Connector4-40 0.0937 (3/32) Size 2: Bearing Retainer10-32 0.1562 (5/32) Size 2: Beam Retainer, Connector Blk10-32 Set Screw 0.0937 (3/32) Size 2: End Cover1/4-20 0.1875 (3/16) Size 2: Beam, Bearing Retainer2. Needle nose pliers.3. A small flat blade screwdriver.4. 20 watt soldering iron with small tip.5. Diagonal wire cutters.6. Wire stripper for 30 AWG wire.2. ELECTRICAL CONNECTOR REPLACEMENT1. Remove the four screws holding the connector in place.2. Unsolder the wires. (You need not remember where the wires came from because the correctconnections are listed in Section 1.4 Specifications on page 3 of this Manual.) Set the electricalconnector aside.3. Take a new electrical connector in hand. Look closely at the end where the wires will be soldered.Notice that each pin is identified by a letter.4. Turn to Section 1.4 Specifications, Page 3 of this Manual and solder the wires to the pins asdescribed under "Connector Pin Assignments".5. Carefully stuff the wires into the connector block and position the connector so the small key tab inthe threaded end of the connector faces the roll. Replace all four screws and tighten.3. SHAFT REMOVAL1. Place the transducer on a clean bench. Block it in place so it can not roll.2. Using an ink marker or piece of tape, identify the end of the roll near the electrical connector withthe letters "EC".3. Loosen the two set-screws and remove the end cover having the Tension Force direction decal. SeeFigure 10.Figure 10 - DECAL END OF TRANSDUCER13
Page 1 and 2: DOVER FLEXO ELECTRONICS, INC.ISO 90
Page 3: TABLE OF CONTENTSSECTION ONE DESCRI
Page 7 and 8: 1.4 SPECIFICATIONSExcitation Voltag
Page 9 and 10: SECTION 2INSTALLATION2.1 DIMENSIONS
Page 11 and 12: Figure 4 - TENSION ZONES3. WRAP ANG
Page 13 and 14: SECTION 3CALIBRATION3.1 INTRODUCTIO
Page 15: Figure 8 - BEARING LIFE NOMOGRAM11
Page 19 and 20: 15. The disassembly procedure is sl
Page 21 and 22: SECTION 5TROUBLESHOOTING GUIDEThis
Page 23 and 24: SECTION 6REPLACEMENT PARTS(Model TR
Page 25 and 26: Appendix B:Selection of Load Rating
Page 27 and 28: Appendix C:Typical Tensions for Var
Page 29 and 30: DECLARATION OF CONFORMITYWe,Dover F
Page 31 and 32: INDEXAccessories ..................

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