安德里茨设备操作安装维修手册.ppt

delivered with each machine delivery,includes also assembly and dimension drawings and part lists,Safety instructions-Lifting,Mounting of Equipment,During Operation,the supplier of the screen is only responsible for the assembly of the screen,prior to delivery,during the mounting,the fastening of the washer installed at the end of,the shaft of the electric motor must be taken into account!,Check the maximum feed pressure of the screen from the dimensional,drawing appended to the instructions,Do not use the screen at a temperature higher than notified while the,order was being made,When the operating temperature exceeds 65C(prEN563),even short-term,surface contact may cause skin burn,All original guards of the screen must be appropriately fastened while,the screen is running-do not remove them during operation!,All maintenance of the screen and its drive motor is forbidden during operation,Safety instructions,de-aeration of the screen,Check the maximum feed pressure of the screen from the dimensional,drawing appended to the instructions,Do not use the screen at a temperature higher than notified while the,order was being made,When the operating temperature exceeds 65C(prEN563),even short-term,surface contact may cause skin burn,All original guards of the screen must be appropriately fastened while,the screen is running-do not remove them during operation!,All maintenance of the screen and its drive motor is forbidden during operation,except:,lubrication of bearings,adjusting sealing water flow and pressure,During Operation,Safety instructions,Use appropriate hoisting equipment when lifting the screen,Before maintenance,stop the drive motor and disconnect it from the,electrical supply,Before opening the cover of the screen:,make sure that the screen is de pressurized,make sure that no liquid or stock can flow into the screen,The screen can be started after maintenance only after:,the cover of the screen has been closed,all original guards have been installed properly,Measure the thickness of the screen material regularly,The sealing water valve must be opened before starting,the drive motor of the screen!,During Operation,Power transmission in Andritz screens:,V-belts,Gearbox-only in large special units,NOTE!,Do not tension the belts over,the recommended area!,Tension Principle,Belt deflection,Bending force F,-Check the tensioning after 48 hours use,-Do not tension the belt over the recommended range,Equipment,F10,F20,F30,F40,F50,Deflection(mm),15,15,20,20,25,Belt profile,SPB,SPC,Smaller pulley,160-224,236-315,224-355,375-560,mm,F(N),35-50,50-65,60-90,90-120,Tension V-belts,F60,32,General instructions for installation,Piping,Pipes should be supported in such a way that the weight of the pipes is not,taken by the screen,In locating the supports,take care to ensure that the pipes do not cause,stress to the screen,The supports must allow for thermal expansion of the pipes,If not,connections and screen body will be damaged!,Feed,accept,reject,reject dilution,rotor dilution,sealwater,deaeration,junk trap,emptying/flushing,Piping and Valve installation,Inspection before operation,Check belt tensioning,the direction of the motor rotation,foundation,foundation bolts and“V-belt pulley taperlocks”,Check that the interior is clean and that no foreign objects have,entered the screen,Inspect the pipe supports,Remove the screen cylinder before starting the screen for the first time(not always necessary,normally according to Andritz start-up supervisor instructions),Operation instructions Before starting the screen,Instrumentation and alarms,Always carry out a test run with water before productive operation-then the,flow control instrumentation can be adjusted and the pressure instruments,be checked.,To prevent the screen from plugging one of the most important of the instruments is the pressure difference control alarm,The seal water measuring rotameter is equipped with a flow guard which can,be connected to the alarm center,Feed stock consistency regulation takes place right after the supply tank by,means of the consistency or dilution flow controllers,Operation instructions Before starting the screen,Operating instructions-Starting,Start the screen in the following sequence:,.Ensure the seal water flow(2-5 l/min),.Fill the screen with water,.Close the air exhaust valve at the screen cover,.Start the screen motor,.Open the reject valve(20%),keep accept valve closed,open reject dilution(30%),1,2,3,4,5,.Adjust the feed consistency to the level shown in the flow sheet,.Adjust the accept valve to the required flow with the feed valve fully open,.Adjust the amount of flow to be discharged as reject with the reject valve,.Deaerate the screen through the air exhaust valve on the screen cover and close,the valve when there is a continuous flow of liquid from the connection,8,9,10,11,.Open the feed valve fully,6,7,.Start the feed pump of the screen,Operation control and flow adjustment,Most important in operational control are:,When the screen has been started,it requires very little attention under,normal operation conditions,pressure difference measurement,reject flow regulation,reject dilution regulation,electric motor load,The pressure and flow of seal water should be checked once in each shift!,Operating instructions-Starting,Stop and flush the screen in the following sequence:,.Stop the feed pump,.Close the accept valve fully while the screen is still operating,.Close the feed valve fully,.Open the dilution valve in order to flush the reject and the fibers to reject,treatment,.Close the reject valve and open the air exhaust valve on the screen cover,.Continue flushing until the liquid flowing from the air exhaust pipe no,longer contains fibers,.Unless it is necessary to open the cover and carry out a maintenance,inspection,the screen can be left filled with water until the next start-up!,Close the dilution,fresh water,and air exhaust valves.Stop the screen motor.,Close the seal water valve.,.If the downtime is longer or intended for maintenance inspections,leave,the air exhaust valve open and close only the dilution and fresh water valves.,Stop the screen motor.Drain the screen by opening the drain valve.,Close the seal water valve.,1,2,3,4,5,6,7,8,.Ensure that the motor is disconnected from the electrical network!,9,Operating instructions-Stopping,Foreign objects in a ModuScreen,ModuScreen does not function,Foundation is not steady enough,Shaft is bent,Rotor is damaged,Rotor not in balance,Screen cylinder is damaged,Sliding surfaces of seal are damaged,Seals are wrongly installed,Seals are of wrong quality,Seal water filter is blocked-up,Too much grease in bearings,Defective lubrication,Bearings are damaged,Dirt or water in bearings,Unusually high power consumption,ModuScreen is vibrating,High noise level,Sealing housing is leaking,Seal water amount is low,Bearings are too warm,Short lifetime of bearings,Uneven accept flow,Uneven reject flow,FAILURE,CAUSE,OF,FAILURE,Seekeing the mechanical failure,MAL-,FUNCTION,CAUSE OF,MALFUNCTION,Feed pump is too small,ModuScreen does not function,Feed pump pressure is too low,High feed consistency,Low feed consistency,Feed consistency varies suddenly,High feed amount,Low feed amount,High impurity content in feed,Lack of deaeration in ModuScreen,ModuScreen rotates in the wrong direction,Too high rotation speed,Too low rotation speed,Reject does not get out of the ModuScreen,Sealing water is dirty,Small accept flow,Uneven accept flow,Uneven reject flow,High pressure difference,Low pressure difference,Unusually high power consumption,Sealing housing is leaking,ModuScreen is vibrating,Accept flow stops,Seekeing the malfunction,Recommended lubricants,F50-60*),Mobilith SHC 460,Esso Ronex Extra Dutu 1,Shell Albida PPS,SKF LGEM 2,Neste High temp.grease 1,*)Heat resisting lubricant,grades only,LUBRICANTS,F10-F40*),Mobilux EP 2,Esso Beacon EP 2,Shell Alvania EP 2,Tebo Multi-Purpose Extra,SKF LGMT 3,*)the operating temp.range for,the lubricants is-30.+110 C.,Should the temp.exceed+110 C,lubricants are chosen as for F50-F60.,LOWER BEARING HOUSING,Screen,F10,F20,F30,F40,F50-F60,Bearing,type,NU 2313,NU 2316,NU 2324,23228 CC/W33,Manual,lubrication:,Grease/,lubrication,interval,35 g/2 months,50 g/2 months,115 g/2months,-*),Centralized,lubrication:,Grease/10 h,1 g*),2 g*),4 g*),6 g,NU 2324,115 g/2months,4 g*),UPPER BEARING HOUSING,Screen,F10,F20,F30,F40,F50-F60,Bearing,type,7313 BG,7316 BG,7324 BG,7330 BCBM/,7230 BCBM,Manual,lubrication:,Grease/,lubrication,interval,50 g/2 months,70 g/2 months,145 g/2months,-*),Centralized,lubrication:,Grease/10 h,1 g*),2 g*),4 g*),6 g,7324 BG,145 g/2months,4 g*),*)F50 and F60 can be suppliedWith a lubrication center as anoption,*)the standard delivery doesnot include a lubrication center,The main scope of delivery is,-screen housing and common,mounting frame(base plate),-rotor,-mechanical seal,-V-belt pulleys/V-belts,-shaft package,-seal water and lubrication,system,-screen cylinder,(electric motor),ModuScreen F10-F60,Screen cylinder and rotor lifting tool,Temperature sensors PT100,Temperature isolation,Vibration sensors SKF,Vibration sensors SPM(no DCS-connection),Accessories,Local pressure meters,Pressure transmitters(Electrical PMC transmitters),General assembly ModuScreen F10-F60,ModuScreen F10-F60,1,2,3,4,5,6,.Stop ModuScreen,flush and drain the screen,.Disconnect the motor from the electrical network according to regulations,.Remove the air exhaust connection of the cover,open cover and move aside.,.Unscrew the mounting screws of the spacer ring and lift off the spacer ring,.Detach the screen cylinder from its fitting by screwing two spacer ring mounting screws into two opposite threaded holes M12 in the screen cylinder,.Screw two lifting eyes into two opposite M12 holes and lift off the screen cylinder.,Screen cylinder-dismounting,Wash detached parts,inspect potential wear,inspect the condition of the O-ringat the bottom end of the screen cylinder.,1,2,3,4,.Lower the screen cylinder into ModuScreen.Ensure that the cylinder is straight.The fitting at the bottom end and the anti-torsion screws at the top end guide the screen cylinder into place.,.Install the spacer ring into place.When the spacer ring is properly in its place,install the mounting screws of the spacer ring.,.Tighten the screws with a torque wrench to a tightness of 60 Nm crosswise following the numbering in following picture.If there are more screws than in the figure,follow the same principle as to the order in which the screws are tightened.,.Place the cover back into place and tighten the mounting screws.,Screen cylinder-mounting,5,.Fasten the air exhaust connection hose of the cover.,Screen cylinder-tightening,Screen cylinder-fixing,Rotor and fixing element,NOTE!Do not mix the order of the parts!The central sleeve can be mounted correctly in one way only!,Install the rotor on to the shaft:,.THINLY OIL THE SHAFT END,ROTOR HUB AND OUTER AND CONICAL SURFACES OF THE FIXING SLEEVE.,.Attach two eyescrews into the holes on the rotor hub and lift the rotor onto the shaft.,.Mount the fixing sleeve part by part in accordance with the following picture,Mount the lower conical ring of the fixing sleeve into place,Place the central sleeve on top of the lower conical ring so that the slits in the parts meet each other,Mount the upper conical ring(1)so that the slits in the parts meet each other.,With a torque spanner,tighten the screws of the fixing sleeve evenly cross-wise,little by little.Tighten the screws on both sides of the slit after one another.Tighten all screws until they have reached the given tightening torque.,1,2,3,The rotor must be removed for maintenance purposes or for the inspectionof the mechanical seal or the bearing unit.,.Remove the pressure plate and the gasket.,.Remove the central sleeve part by part.,1,2,Rotor,Tightening,Removing upper cone,Removing lower cone,NOTE!,When dismounting and mounting the central sleeve,Make absolutely sure NOT to mix the order of the parts.,The fixing element can be mounted correctly in one way only,The upper and the lower conic ring must be in their correct,places(must no be mixed with each other)and the central,Sleeve must be the right way up.,Fixing element of the rotor,Torques:F10:41 NmF20:83 NmF30-F60:145 Nm,Standard Andritz mechanical shaft seal is double sided normally manufacturedby:Safematic Burgmann,Mechanical seals sealing water,The requirement of clean sealing water is 0.03-0.08 l/s(2-5 l/min),the pressure of the water to the seal recommended to be 100 kPa higherthan the maximum inlet pressure of the screen;however,at least 300 kPa,NOTE:Burgmann mechanical seals require 100 kPa seal water pressureregardless the pulp feed pressure,provided that constant seal water flow0.03-0.08 l/s(2-5 l/min)is maintained,It is essential,to use the correct method of mounting and,to observe the rules of cleanliness,Avoid touching the sliding surfaces,Remove sharp edges from all shoulders,DO NOT MOUNT THE PARTS,BY APPLYING DIRECT BLOWS,TO THE BEARING!,General on the installation seals,Double sided mechanical seal,Double sided mechanical seal-Safematic,Seal water piping,Reasons for dismounting the shaft:,service inspection,damage of bearings,change of bearings,The shaft can be dismounted with or without the bearing frame.,1,2,3,4,5,.Detach the bearing lubricating hoses.,.Detach the belt pulley and the splash guard.,.Detach the rotor.,.When lifting the shaft package out in complete,detach only the screws that,fasten the bearing frame to the screen.,.Support the bearing frame outside the screen into horizontal position,remove the shaft seal loosen the bearing housing fastening screws,turn shaft the width of the fastening ears pull the shaft with bearings,out from the bearing frame.,We would recommend that the shaft be removed,WITH the bearing frame included.,Shaft package,Shaft package,Rotor,Complete bearing unit assembled and Shaft package assembled,Complete bearing unit assembled,Removing lower sleeve(CC),Removing lower bearing(NU),Removing upper bearing(BCBM),Removing upper bearing(BECBP),Installation of upper bearings,Installation of Lower bearings(NU),Installation of lower bearings(CC),