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Table of Contents
Related Manuals for Igema NA7-50
Summary of Contents for Igema NA7-50
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Page 2: Table Of Contents
Table of contents- Health and safety instructions General health and safety instructions ........4 Unit-specific safety instructions ..........5 Exclusion of liability ..............5 Important information Intended use ................6 Explanations Scope of supply ................ 6 System description ..............6 Function .................. - Page 3 Maintenance Cleaning of standpipe (2) and float (2.1) ........13 Tightening torques..............14 Drain valve 10.1 Construction ................14 10.2 Assembly ................15 10.3 Commissioning ............... 16 10.4 Maintenance ................16 Spare parts 11.1 Magnetic level gauge .............. 17 11.2 Drain valve ................17 Decommissioning 12.1 Disposal ................
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Page 4: General Health And Safety Instructions
General health and safety instructions 1. Avoidance of danger for persons and property Only use unit for intended purpose. No additional mountings and modifications on the unit without our approval. Adhere to the standards for prevention of accidents and to the plant specific safety regulations. -
Page 5: Unit-Specific Safety Instructions
The IGEMA GmbH Mess- und Regelsysteme does not accept liability when a/m regulations, instructions and warning indications are not observed and adhered to. The operator is responsible for modifications on a unit of IGEMA (if they are not explicitly specified in the mounting and operating instructions). -
Page 6: Intended Use
2.1 Intended use Magnetic level gauge NA7-50 / 52: The magnetic level gauge is a liquid level gauge which can be used for steam boilers and containers. The indication is made via a float operated magnetic system. The product corresponding to the EU 2014/68/EU. - Page 7 NA7 (version flange/ventilation cone)) > 2,6m > 6m Possible vent connections Ventilation Cone Flange Flange with vent flange Possible drain connections Flange with drain flange Flange with drain valve To indicate a range > 2,6 m it is necessary to use 2 or more superposed indicating ledges.
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Page 8: Type Of Connection
Product designation: e.g. NA7-50 / 52 flange/ventilation cone -50 / 52 Flange / Ventilation Cone Device Float diameter Drain Ventilation 4.2 Type of connection Standard : flanges according to DIN or ASME On request : welding end or Socket Welding according to DIN or ASME 4.3 Materials... -
Page 9: Assembly
Connection studs Standpipe (2.1) Float (2.2) Sealing (2.3) Cover flange Flap indicator (3.1) Bolt spring (3.2) Stop clamp Magnetic switch (optional) Primary element MRK-… (optional) Plug Drain valve (optional) Upper shutoff valve Lower shutoff valve 6. Assembly Take care that connection of shutoff valves (W+D) is made with a horizontally orientated spindle. -
Page 10: Heat Treatment Of Weldseams
Assembly only by using welding process 111 (manual arc welding) and 141 (tungsten inert gas welding). 6.3 Heat treatment of weldseams Supplementary temper tests of weldseams are not required. 6.4 Flap indicator The centre of the lower process connection is the reference point for the zero mark of the flap indicator (3). -
Page 11: Electrical Connection
Assembly of magnetic switches or sensor may only be carried out in a maximum angle of 90° to the centre of the flap indicator. Never insulate additional equipment. The magnetic switch is continuously adjustable in the whole indication area “E”. (see special data sheet) ... -
Page 12: Commissioning
8. Commissioning Unit may be hot during commissioning and during operation. Attention danger of life! Customer can possibly provide safety device. 8.1 Adjustment of indicating flaps Pass setting magnet (bottom-up) 3 times along the glass plate. The flaps above the zero mark are white and the flaps below the zero mark are red. (see figure in chapter 8.4) 8.2 Commissioning of unit together with the boiler Check specifications of material, pressure and temperature! -
Page 13: Cleaning Of Standpipe (2) And Float (2.1)
Attention danger of life! Customer can possibly provide safety device. 9.1 Cleaning of standpipe (2) and float (2.1) Purging of connection pipework including case: Close shutoff valves (W+D). Slowly open drain valve (A) / plug (6) and drain medium ... -
Page 14: Drain Valve
150 165 Tightening torques of screw plug (6) Md= 150 Nm 10. Drain valve 10.1 Construction AV500, AV520 Male thread G½ on input side Output side with cutting ring connection ø 12 as per DIN 2353 – DS12 AV540, AV550 ... -
Page 15: Assembly
Output side with cutting ring connection ø12 as per DIN 2353 – DS12 On request other connections possible (1) Valve housing Screw cap (2) Sealing ring Sealing ring (3) Seat (10) Upper part of valve (4) Valve spindle with cone (11) Handwheel (5) Scraper rings (12) Plate OPEN-CLOSED AUF-ZU... -
Page 16: Maintenance
Fully open valve for purging. The pre-pressed gland packing can lose its denseness due to a longer storage (see chapter 10.4) Close valve. 10.4 Maintenance Before carrying out maintenance works on drain valve, unit has to be pressureless and empty! Severe burns and scaldings on the whole body are possible! Re-tightening of gland packing: ... -
Page 17: Drain Valve
Pos. Article no. Designation steel stainless st. Fixing element 15-00250 AL1-G 10-130070 Indicating ledge AL2-G 10-130072 AL3-G 10-130074 depending Flange sealing on the order Screw plug 40-00330 Sealing 40-00128 Screw plug 40-03794 11.2 Drain valve Sealing 40-00127 Magnetic switch 15-03037 Primary element MRK-.. -
Page 18: Disposal
Before detaching flange connections, screws of stuffing box cover screws or screw plugs, all connected lines must be pressureless (0 bar) and cooled off to ambient temperature (20°C)! 12.1 Disposal Dismount unit and separate waste products. When disposing the unit, observe legal regulations for waste disposal. 13. - Page 19 IGEMA GmbH Antwerpener Str. 1 D-48163 Germany Tel.: +49 25 01 9 24 24 0 Fax.: +49 25 01 9 24 24 99 info@igema.com www.igema.com...