Metso NB723, Installation, Maintenance And Operation Instructions

Page 1: ...Positioners Series NP700 Installation Maintenance and Operating Instructions 7 NP 72 en 11 2014 ...

Page 2: ...solete since 2013 5 2 4 Piping of supply air 5 2 5 Instrument air supply 8 3 INPUT SIGNAL AND DIRECTIONS OF OPERATION 8 3 1 Changeover piece 8 3 2 Cam plate 8 4 PRELIMINARY ACTIONS FOR THE ADJUSTMENT 8 4 1 Position of the changeover piece 8 4 2 Pilot valve 8 4 3 Position of the cam plate 9 5 BASIC ADJUSTMENT 9 6 a0 ADJUSTMENT 9 7 SPLIT RANGE ADJUSTMENT 10 8 MAINTENANCE 10 8 1 Supply air filter 10 ...

Page 3: ...ply pressure If the signal pressure is altered the spool moven out of the equilibrium position and causes a pressure difference in the cylinder The piston moves in the direction of the difference pressure until the compression force of the feedback spring generated by the change in position is in equilibrium with the force generated by the signal pressure Thus each signal pressure value correspond...

Page 4: ...rom the manufac turer A positioner can also be returned to the manufacturer for recycling and disposal against a fee 1 7 Safety precautions 2 MOUNTING ON THE METSO ACTUATOR 2 1 General When the positioner is supplied together with the valve and actuator the tubes are mounted and the positioner adjusted in accordance withthe customer s specifications When the positioner is ordered separately the mo...

Page 5: ... when mounting the limit switch on the actuator Make sure that the position of the shaft is unchanged relative to the positioner 4 Place the limit switch on the positioner so that the shafts are correctly engaged 5 Fasten the cover screws 6 Check the adjustment of the limit switch See the instruction manual of the limit switch for details 2 4 Piping of supply air Table 2 provides the recommended p...

Page 6: ...1 1 8 10 0 9 55 1 8 111 3 8 x x x x 1 5 3 1 5 3 2 5 5 5 12 16 3 6 225 6 7 415 1 2 x x x x 4 5 11 8 18 3 5 6 4 5 11 20 25 13 795 27 1642 3 4 x x x x x x x x 8 5 21 17 38 7 5 19 15 33 32 322 53 3231 106 6480 1 x x x x x 33 74 30 64 60 130 QP Stroke vol dm3 in3 NPT 6 4 10 8 12 10 1 4 3 8 1 2 ø4LC ø4 ø6 ø6 HC 1C 0 62 38 3 8 x x 1 5 2 1 5 2 2C 1 08 66 3 8 x x 2 3 5 2 3 5 3C 2 18 133 3 8 x x 3 5 2 3 4C ...

Page 7: ... to open valve Spring to close valve Cam segments B 0 100 A 0 50 A 50 100 4 Increasing input signal to close valve Spring to open valve Cam segments B 0 100 A 0 50 A 50 100 WARNING Valve closes exceptionally counterclockwise Unsuitable for Q R T5 F and L series valve NOTE Reverse piping for ST actuators Spring and piston in the opposite position from shown SINGLE ACTING SPRING TO OPEN 5 Increasing...

Page 8: ...uring the adjustment 4 1 Position of the changeover piece Choose the position of the changeover piece D or R from Fig 7 in accordance with the function desired Turn the changeover piece 46 when necessary Loosen the nuts 49 and remove the protective plate 48 Pull out the changeover piece 46 Check the O rings 47 2 pcs and apply silicone grease lightly if needed Place the changeover piece 46 and the ...

Page 9: ...the spring 60 is increased or decreased by turning the range adjustment nut 60 3 See Fig 9 4 The zero and range adjustments affect each other so stages 2 and 3 must be repeated a few times 5 Screw on the pointer 32 into place so that the yellow line is in the direction of the valve closing member Tighten the screw 57 6 α0 ADJUSTMENT α0 adjustment is made to segment and ball valves This adjustment ...

Page 10: ... not necessary The need for maintenance depends on the quality of the instrument air See also Section 2 5 If there is need for servicing proceed according to the fol lowing sections 8 1 Supply air filter The supply air filter 50 is located in the supply air connec tion S the filter can be removed for cleaning 8 2 Pilot valve Remove the pilot valve 44 by first loosening the nuts 49 and then by lift...

Page 11: ...er and actua tor the changeover piece or the cam position wrong 3 Inaccurate positioning pilot valve dirty beam 5 pushes pilot valve spool sideways diaphragm damaged actuator torque too low supply pressure too low valve torque requirement increased 4 Overshooting or too slow positioning pilot valve dirty or wrong size see Table 2 supply air tube too small or supply air filter dirty valve sticks 10...

Page 12: ...7 86 NP700 J 4 68 99 64 101 3 69 98 NP700 S1 NP700 R NP700 GN 4 3 4 3 27 28 50 62 77 78 79 72 70 71 73 74 76 NP700 K NP700 A 100 43 44 45 47 46 48 49 109 110 2 29 30 31 32 57 105 58 5 6 59 16 60 51 34 33 56 67 14 15 55 10 8 7 22 23 22 75 54 18 22 23 37 115 116 NP700 B B1 NP700 B L NP700 A 1 ...

Page 13: ...Lever assembly 34 1 Retaining ring 1 37 1 I P converter 43 1 O ring 1 44 1 Pilot valve assembly 2 45 1 Gasket 1 46 1 Changeover piece 47 2 O ring 1 48 1 Protective plate 49 2 Hexagon nut 50 1 Filter 51 2 Bearing Item Qty Description Spare part category 55 1 Gasket 1 56 1 Screw 57 1 Grub screw 58 1 Support plate 59 2 Barrel nut 60 1 Spring 62 1 Hexagon plug 64 1 Body 65 1 Lock ring 67 1 Zero screw ...

Page 14: ...14 7 NP 72 en 13 2 Mounting parts for B1C6 502 and B1J8 322 actuators S1 Item Qty Description 1 1 Mounting bracket 2 1 Draught piece 3 4 Washer 4 4 Screw 28 4 Screw 29 2 Screw 36 1 Coupling jacket ...

Page 15: ...Description 1 1 Mounting bracket 2 2 Coupling half 3 1 Adapter 4 4 Screw 5 4 Hex nut 6 1 Screw 7 4 Screw 8 4 Washer 9 4 Screw 10 4 Washer Drive female spline Item Qty Description 1 1 Mounting bracket 2 1 Ear 4 4 Screw 28 4 Screw 29 1 Screw 30 4 Screw 35 1 Coupling 36 1 Coupling jacket ...

Page 16: ... actuators S2 Item Qty Description 1 1 Mounting bracket 2 1 Draught piece 3 2 Washer 4 2 Screw 5 1 Bracket 6 1 Washer 7 1 Screw 8 2 Washer 10 1 Rod 11 2 Bushing 12 2 Screw 13 2 Stud B1C6 only 14 2 Hexagon nut B1C6 only 26 2 Locking nut 27 2 Washer 28 2 Screw ...

Page 17: ...g parts for B1C25 502 and B1J25 322 actuators S2 Item Qty Description 1 1 Mounting bracket 2 1 Draught piece 3 2 4 Washer 4 2 4 Screw 8 2 Washer 9 2 Screw 10 1 Rod 11 2 Bushing 12 2 Screw 26 2 Locking nut 27 2 Washer 28 2 Screw ...

Page 18: ...inside with options B and B1 R Water and dustproof enclosure IP65 NEMA 4 and 4X Not available with option GN H High temperature construction Viton diaphragm and seals Not available with options B B1 A A1 and K Temperature range 10 to 120 C 14 to 248 F S1 Positioner with attachment face acc to standard VDI VDE 3845 equipped with H clip When positioners are separate deliveries VDI VDE ear is supplie...

Page 19: ...7 NP 72 en 19 ...

Page 20: ...01 Sorocaba São Paulo Brazil Tel 55 15 2102 9700 Fax 55 15 2102 9748 Asia Pacific Haw Par Centre 06 01 180 Clemenceau Avenue Singapore 239922 Tel 65 6511 1011 Fax 65 6250 0830 China 11 F China Youth Plaza No 19 North Rd of East 3rd Ring Rd Chaoyang District Beijing 100020 China Tel 86 10 6566 6600 Fax 86 10 6566 2583 Middle East Roundabout 8 Unit AB 07 P O Box 17175 Jebel Ali Freezone Dubai United...