SERVICE MANUAL EMC Isolation Valve
Contents
1. SERVICE MANUAL EMC Isolation Valve Designed and Manufactured by THE ELECTRON MACHINE CORPORATION Umatilla FL USA 5 08 Service Manual Isolation Valve TABLE OF CONTENTS Page Compression PACKING ss es ER EE DE E ALAE ees ele 1 Service Parts List seinra ranean N E E ONENE 2 Procedure for Removing Sensing Head or Maintenance Plug 3 Test Procedure for Isolation Valve Proximity Switch 4 Service Manual Isolation Valve Compression Packing ls Periodically inspect area around valve stem and the packing gland flange for leaks during usage If leaks occur around this area tighten packing gland nuts until leakage stops If leakage still occurs after tightening gland replace compression packing See service parts list for packing material Line must be down before attempting packing replacement Service Manual Isolation Valve Service Parts List Isolation Valve HANDWHEEL amp DRUM ASS Y EMC 29054 PROXIMITY SWITCH EMC 174200 Zp ee ie TM Je Q VEE A COMPRESSION PACKING 1 4 DIA X 22 LONG GARLOCK 234 STEM LUBRICATION BOSTIK NEVER SEEZ BONNET ASS V GM VALVE STEM amp CUP ASS Y 3 4 amp 6 VALVE STEM EMC 429097 a VALVE STEM EMC 29098 MAINTENANCE PLUG 12 VALVE STEM EMC 29074 EMC 29099 O RING SEAL EMC 496400 CUP amp ADAPTER SEALING SURFACES Service Manual Isolation Valve Procedure for Removing Sensing Head o2. ance plug or sensing head into the adapter always check the o ring for damage and to ensure it is in place Service Manual Isolation Valve Test Procedure for Isolation Valve Proximity Switch HANDWHEEL amp DRUM ASS Y he m M PROXIMITY SWITCH STEM LUBRICATION TIZH COMPRESSION PACKING KIL lt TTTITN Eeue dead aged e rrr VALVE STEM amp CUP ASS Y SENSING HEAD REMOVE SENSING HEAD DO NOT REMOVE WITH CAUTION SENSING HEAD
3. r Maintenance Plug Always wear a face shield and waterproof protective covering when removing the sensing head or maintenance plug from the isolation valve Turn off steam for purging on the sensing head being removed If there is only one common shut off for both sensing heads turn off power on the MDS electronics card to prevent a divert caused by missed purge Close isolation valve by turning red handle cw to a hard full stop Loosen sensing head or maintenance plug mounting nut one 1 complete turn Check for pressure on the sensing head or maintenance plug before proceeding Push and pull the sensing head in and out between the mounting nut and the adapter You should be able to move the sensing head about 4 6mm Continue the movement until liquor drains from the adapter and no pressure is felt on the sensing head The liquor is under pressure until it is drained STOP IF THERE IS A RESISTANCE AGAINST THE SENSING HEAD RETIGHTEN THE MOUNTING NUT DO NOT REMOVE THE SENSING HEAD OR MAINTENANCE PLUG When there is no sign of pressure felt on the sensing head remove the mounting nut slowly while pushing and pulling the sensing head checking for pressure Stand to one side before completely removing the mounting nut It takes three 3 complete turns to fully remove the nut from the adapter After removing the sensing head flush all liquor from the adapter for easy installation and removal next time Before inserting mainten
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