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1、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
2、 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
3、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 o
4、peration,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 (prEN56
5、3), 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,
6、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 pres
7、surized,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 o
8、pened 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
9、 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 shoul
10、d 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, ac
11、cept, 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 i
12、s 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,Inst
13、rumentation 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 contr
14、ol 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,Op
15、erating 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 dischar
