FLUID COUPLINGS

W E S T C A RMILANOITALYMILANO - ITALYROTOFLUID COUPLING SCF / DCFINSTRUCTIONS FOR REPLACEMENT AND VARIATIONOF THE OIL QUANTITYSheet10-016A ENDate05-2006OIL CHANGE:The oil in the coupling must be changed for the first time after 2000working hours and subsequently after each 4000 working hours.To change the oil, proceed as follows:1) Rotate the coupling to bring the filling plug to its highest position.2) Unscrew and remove the filling plug.3) Determine the correct filling level by rotating the coupling until the fillinghole corresponds to the current oil level.4) Completely drain the oil in the coupling by bringing the filling hole to itslowest point.5) Rotate the coupling again to bring the filling hole to correspond to thefilling level determined at point 3.6) Pour in the new oil until the oil filling level is reached.The quantity and type of oil recommended is listed inTable 1.EWSD90T75IC60AUSCF STANDARD 45° FILLING LEVELDCF STANDARD 60° FILLING LEVEL45RL30FOTROSTANDARDOIL LEVELFILLING PLUGFILLING LEVEL REDUCEDSCF – FROM 45° TO 75°DCF – FROM 60° TO 90°Fig. 1VARIATION OF THE OIL LEVEL (Figures 1 and 2)According to the type of use and the service required by the coupling,sometimes the oil filling level must be modified by increasing ordecreasing the oil quantity.The following results are achieved by decreasing the oil quantity:- Slower and more gradual startings (Fig. 3).- Less absorption of startings current.- Better protection to the transmission elements in the event of overload.- Higher slip value at running.IMPORTANT:An excessive decrease in the oil quantity can cause the followingproblems:- The impossibility of rapidly accelerating the machine due to insufficienttorque.- The overheating of the coupling, with consequent damage to the oilseals.The following results are achieved by increasing the oil quantity:- Faster startings (Fig. 3).- Lower slip value at running.- Higher absortion of starting current during acceleration phases.- Greater strain on transmission elements.D(R.P.M.)IW30°UE45°LS60°90TF75°C75OA6090°RT45OSTARTING TIME30RREDUCEDOIL LEVELFILLING PLUGFig. 2(In RPM-Out RPM)x100In RPMMOTOR R.P.M.= Slip value %Slip valueFig. 3IMPORTANT:An excessive oil quantity can cause the following problems:- The overloading of the electric motor.- The overturning of the oil seal lip due to internal overpressure.- The cracking of the coupling housing due to internal overpressure caused by the lack of internal space for sufficient oil expansion.NOTE: the filling level at 45° must never be exceeded, and a level at 30° can be reached only in special cases and after previous WESTCAR Consult.(sec)Types of oil recommended for standardworking temperature from -20°C. to +180°C.- BP ENERGOL HPL 22÷32- CASTROL HYSPIN AWS 22÷32- ESSO SPINESSO 22÷32- MOBIL VELOCITE OIL D-OLEOTECNICA MOVO H 22÷32-SHELL TELLUS OIL 22÷32Types of oil recommended for continuous work(over 5 days) temperature -15°C. to +180°C.- BP ENERGOL HLP Z 46- CASTROL HYSPIN AWS 46- ESSO NUTO H 46- MOBIL DTE 25- OLEOTECNICA MOVO H 46- SHELL TELLUS 46The coupling can be also supplied with fire-proof oil or forlowtemperature one (-40°C.). For more information, consultWESTCAR.Tab. 1OIL QUANTITIES CORRESPONDING TO DIFFERENT FILLING LEVELS( Kg.= Litri x 0,875 )SIZE 45° (lt.) 60° (lt.) 75° (lt.) 90° (lt.)SCF DCF SCF DCF SCF DCF SCF DCF20 – – – – – – – –30 2,65 2,94 2,30 2,58 1,86 2,07 1,47 1,6130P 4,32 4,62 3,72 4,02 3,04 3,26 2,39 2,5340P 4,44 5,34 3,84 4,70 3,14 3,78 2,45 2,9350 5,27 6,36 4,62 5,67 3,83 4,59 3,07 3,5655 8,06 9,12 7,04 8,05 5,93 6,67 4,84 5,3360 10,01 11,63 8,71 10,35 7,16 8,41 5,58 6,2965 14,86 16,42 12,80 14,34 10,65 11,85 8,47 9,2070P 20,09 23,83 17,51 21,20 14,34 17,32 11,07 12,8275P 32,96 36,68 27,39 31,02 22,61 25,55 17,87 19,6380P 42,50 48,45 37,38 43,29 30,58 35,27 23,76 26,5785P 67,55 73,49 59,54 64,49 48,40 53,08 38,41 41,2290P 104,80 118,72 91,70 104,61 73,72 83,45 57,25 63,9495P 178,18 192,94 154,89 168,50 125,43 135,76 98,63 105,8145