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Summary of Contents for Gemu 653
- Page 1 Aseptic Diaphragm Valves Maintenance & Operating Guidelines VMS - Rev.02 26.04.2004...
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Page 2: Maintenance Overview
Maintenance Overview Travel Stops Diaphragm Replacement Torquing Guideline Accessories VMS - Rev.02 26.04.2004... - Page 3 Travel Stop Setting Travel Stops Prevent Over-closure • Remove the cap screw. • Remove the handle, invert it and remount it on the spindle • Turn the handle clockwise until the resistance of the diaphragm seating is felt. Turn the handle another 180 degrees.
- Page 4 653 / 654 Operating Instructions Setting stroke limiter (opening) and seal adjuster (closing) Remove the cap (12) from the center of the handwheel. Turn the hand wheel away from its stop position so that it can be turned freely in both directions.
- Page 5 Removing the Process Diaphragm Move the valve to the open position • • Remove the fasteners • Move the valve to the closed position • Unscrew the diaphragm counter-clockwise or for the button style push one side down with your index finger while lifting the other side with your thumb VMS - Rev.02 26.04.2004...
- Page 6 Installing the Diaphragm (Concave) • Type 1: Screw the diaphragm clockwise into the compressor so that the cylindrical boss around the diaphragm stud fits into the recess of the compressor. When contact (resistance) is felt, turn the diaphragm back (counterclockwise) until the bolt holes in the diaphragm and bonnet flange are correctly aligned.
- Page 7 Installing the Diaphragm (Convex) Types 5E and 5S only • Position rubber backing on compressor • Invert the Teflon portion by pressing the center with your thumbs while holding the edges • Screw the the Teflon face back, clockwise so that the cylindrical boss of the rubber backing fits completely in the recess of the compressor •...
- Page 8 Assembling Actuator to Body Align the diaphragm tab with the weir • and install fasteners hand tight • Bring the valve to the open position • Close the valve • Open manual and motorized valves 20% • Cycle pneumatically actuated valves 3times prior to final tightening •...
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Page 9: Torque Guidelines
Torque Guidelines Seat Actuation Type 601, 602, 603, 605, 618, 640, 641, 650 Standard values for sealing material 612, 615, 618, 625, 640, 650, 653, 654 Seat Thread Units EPDM PTFE 620, 640, 650, 653, 654, 671, 672, 673 25-150... - Page 10 Influence on Bolting Torque Bolt Characteristics: Property class of the bolt Bolt surface treatment Thread manufacturing (rolled or machine cut) Lubricants / anti-seize agents New or used (friction factors) Tightening procedure Diaphragm material properties Suggested torque values are guidelines Diaphragm compression should be 15-20% of original thickness VMS - Rev.02...
- Page 11 Diaphragm Compression Extreme VMS - Rev.02 26.04.2004...
- Page 12 Diaphragm Compression Excessive VMS - Rev.02 26.04.2004...
- Page 13 Optimum Compression VMS - Rev.02 26.04.2004...
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Page 14: Accessory Assembly
Accessory Assembly Remove the actuator cap to • provide access to the fastening threads • The first (1) assembly point is between the indicator stem and the actuator spindle • The second (2) assembly point is between the stroke limiter and the actuator housing VMS - Rev.02 26.04.2004... - Page 15 Optimum Compression VMS - Rev.02 26.04.2004...
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