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19

11. Drain valve

11.1 Construction

AV500, AV520

•

Male thread G½

“ on input

side

•

Output side with cutting ring

connection ø 12 as per DIN
2353

– DS12

AV540, AV550

•

Male thread G½ on input

side

•

Output side with welding end

•

On request other

connections possible

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Содержание NA7-50

Страница 1: ...Edition 08 2020 D 06 B 51277 EN 00 INSTALLATION AND OPERATING INSTRUCTION NA7 50 NA7 52 Magnetic level indicator...

Страница 2: ...of your plant in particular in the steam and condensate sector We take care of both the modernisation of steam boilers that are equipped with mature mechanical technology and of new systems that are...

Страница 3: ...tions for this device 9 1 5 Exclusion of liability 9 2 Verpackungsinhalt 9 3 Important information 10 3 1 Intended use 10 4 Explanations 10 4 1 System description 10 4 2 Function 10 5 Technical data 1...

Страница 4: ...ditional equipment 15 8 Electrical connection 15 16 Magnetic switch 15 Primary element 16 9 Commissioning 16 17 9 1 Adjustment of indicating flaps 16 9 2 Commissioning of unit together with the boiler...

Страница 5: ...1 1 Construction 19 20 11 2 Assembly 20 11 3 Commissioning 21 11 4 Maintenance 21 22 12 Spare parts 22 12 1 Magnetic level gauge 22 12 2 Drain valve 22 13 Decommissioning 22 13 1 Disposal 22 14 Supple...

Страница 6: ...bove tasks IGEMA GmbH accepts no liability for damage to property or personal injury caused by unqualified persons or by failure to observe these installation and operating instructions If no sufficie...

Страница 7: ...GEMA GmbH should be contacted beforehand to ensure that the device is suitable and designed for the desired application and medium The maximum values of the pressure and temperature range of the devic...

Страница 8: ...been depressurised and that the pressure has been safely reduced to atmospheric pressure In principle no system should be regarded as unpressurized even if indicated by pressure measuring devices suc...

Страница 9: ...GmbH the applicable safety and environmental laws according to GGVSEB German ordinance on the national and international carriage of dangerous goods by road rail and inland waterways must always be ob...

Страница 10: ...1 System description The level gauge indicates the level in the boiler indirectly 4 2 Function The unit works according to the physical law of the communicating tubes The liquid level in the standpipe...

Страница 11: ...5 Technical data 5 1 Versions NA7 version flange ventilation cone 2 6m 6m Possible vent connections Flange Flange Flange Possible drain connections Flange with drain flange Flange with drain valve A1...

Страница 12: ...rding to DIN or ASME 5 3 Materials Fluid side in stainless steel according to DIN or ASME Float made of stainless steel for low medium density the float is made of titan 5 4 Application limits 5 5 Cor...

Страница 13: ...spindle The arrow on the valve indicates the flow direction and must point towards the standpipe 2 Check mating dimensions between instrument nozzle and boiler nozzle Make sure that there are no magne...

Страница 14: ...at 2 1 with inner magnetic system and the new gasket 2 2 are packed and fixed outside of the standpipe 2 when the unit is supplied Open cover flange 2 3 Carefully remove float packing Insert float wit...

Страница 15: ...of the lower process connection is the reference point for the zero mark of the sensor marked in red see special data sheet and operating instruction for primary element MRK 8 Electrical connection On...

Страница 16: ...a sheet and operating instruction for primary element MRK 9 Commissioning Attention danger of life Unit may be hot during commissioning and during operation Customer can possibly provide safety device...

Страница 17: ...evice to adjust the flaps 10 Maintenance When using viscous or crystallizing media clean standpipe 2 and float 2 1 inside in regular intervals and during boiler revision Attention danger of life Unit...

Страница 18: ...r marking Always use new gaskets 2 2 when assembling the unit Tighten bolts of cover flange standpipe in several steps using successively opposite diagonal tightening see table in chapter 9 2 until re...

Страница 19: ...onstruction AV500 AV520 Male thread G on input side Output side with cutting ring connection 12 as per DIN 2353 DS12 AV540 AV550 Male thread G on input side Output side with welding end On request oth...

Страница 20: ...5 Scraper rings 12 Plate OPEN CLOSED AUF ZU 6 Gland packing 13 Cap nut 7 Stuffing box 14 Drain connection 11 2Assembly Ensure that drain piping has free outlet to atmosphere and is protected from pre...

Страница 21: ...p 8 with open end wrench SW27 clockwisely until valve is tight Spindle 4 must stay movable Replace gland packing if re tightening of packing was not successful Replacement of packing Screw off cap nut...

Страница 22: ...e no steel stainless steel 3 1 Fixing element 15 00250 3 Indicating ledge AL2 G 10 130072 AL3 G 10 130074 2 2 Flange sealing depending on the order 6 Screw plug 40 00330 Sealing 40 00128 7 Screw plug...

Страница 23: ...priate treatment according to these mounting and operating instructions The warranty for wear and spare parts is restricted to material defects and construction faults The magnetic switches are wear p...

Страница 24: ...24 Antwerpener Str 1 Fon 49 2501 92424 0 48163 M nster Fax 49 2501 92424 99 Deutschland info igema com www igema com IGEMA GmbH...

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