Operating and Maintenance Instruction GAS BACK PRESSURE REGULATOR Gas Back Pressure Regulator MF50R DN/2”A150 The Experts in Energy Supply MF50R manual_ENG

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50R MF50R GAS BACK PRESSURE REGULATOR - MEGAFLOWType: MF50R.612 1. DESCRIPTION The MF50R are pilot-loaded, pressure-balanced, plain-seat back pressure regulators with soft seal ring. The models MEGAFLOW - MFR can be fitted with pilots series G612. See Bulletin G612 Pilot. 2. INSTALLATION a) Make sure that data on the back pressure regulator’s plate are compatible with actual working conditions. b) Install the back pressure regulator so that its position matches the flow direction shown by the arrow. c) Remove safety-coves from...

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50R4.2 OUTLET PRESSURE DECREASES Check: a) Insufficient feed flow. b) Demand greater than back pressure regulator capacity. c) Irregular pilot feed. a) Worn seal ring (Valve seat Pos.33) or tube slide valve (Pos.5). b) Worn seal ring (Actuator Pos.30). c) Dirty seal ring (Valve seat Pos.33) preventing proper valve positioning. 4.4 HUNTING Check: a) Insufficient gas demand. b) Faulty setting of inlet and outlet adjustment orifices (see pilot Bulletin G612). 4.5. FREEZING Check: a) Heating. b) Insufficient gas demand. 5. PERIODIC...

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50R 6.2 REPLACING VALVE SEAL-RING a) Remove all connections holding down the covers. b) Remove nuts (back pressure regulator Pos.21) and lift cover assembly straight up using eyelets. c) Unscrew pad retainer (valve seat Pos.23) and replace seal-ring (valve seat Pos.33). d) Check tube slide valve (actuator Pos.5).If worn or scored, use wrench to unscrew and replace. e) Reassemble by reversing the above steps, taking care not to damage seal (actuator Pos36). 6.3 GENERAL MAINTENANCE Remove all connections holding down the covers...

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50R In addition: a) Carefully reassemble cover-slide tube-pad holder-diaphragm plate and disk and put it back in valve body making sure not to damage seat seal surface. b) When tightening nuts make sure slide tube moves freely and that seal ring and seat fit properly together. c) When fitting top cover make sure diaphragm fits properly in its seat. d) Tighten all screws uniformly to ensure sealing. e) Re-establish all connections. 7. ADJUSTING INSTRUCTION Carry out setting while in operating, using the pilot adjusting screw,...

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50RSPARE PARTS LIST: MF50R-20-00-81 Back Pressure Regulator, pilot operated MF50R.1.6.G612 PN20 V50 - complete Pos

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50RSPARE PARTS LIST: MF50-21-00-81 BACK PRESSURE REGULATOR UNIT V50 -complete MF50R- DN50/ 2” PN20 A150RTJ V50 *Seal kit **Diaphragm kit

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50R SPARE PARTS LIST: MF50-05-00 POSITION INDICATOR HS01 -complete MF50R - V50 NOTE: In addition to this operating and maintenance manual, all relevant standards and legal provisions concerning start-up, monitoring, maintenance, repair, restart and operation applicable in the country/state in which the equipment is located must be observed

OPERATING AND MAINTENANCE INSTRUCTION Gas Back Pressure Regulator MF50R HEAT energy GmbH A-2362 Biedermannsdorf, RheinboldtstraRe 16 Tel.: +43 664824 1616 [email protected] www.heatgroup.at HEAT energy Kft. H-8800 Nagykanizsa, Erdesz u. 28. Tel.: +36 93 537 140 Fax: +36 93 537 142 [email protected] www.heatqroup.hu HEAT gaswarmetechnische Anlagen GmbH D-34119 Kassel, Querallee 41 Tel.: +49 561 288 56-0 Fax: +49 561 288 56-20 [email protected] www.heatqroup.de LOG Oiltools Kft. H-8800 Nagykanizsa, Erdesz u. 28. Tel.: +36 93 537 140 Fax: +36 93 537 142 [email protected] www.loqoiltools.hu...