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DIAPHRAGM SERVICINGTo service the diaphragms firstshut off the suction, then shut off thedischarge lines to the pump. Shutoff the compressed air supply, bleedthe pressure from the pump, anddisconnect the air supply line from thepump. Drain any remaining liquid fromthe pump.Step #1: See the pump compositerepair parts drawing, and the diaphragmservicing illustration.Using a 1/2" wrench or socket,remove the 16 capscrews (items 9 &10), and nuts that fasten the elbows(items 16) to the outer chambers(items 13). Remove the elbows with themanifolds and spacers attached.Step #2: Removing the outerchambers.Using a 1/2" wrench or socket,remove the 16 capscrews (items9 and 11), and nuts that fasten theouter chambers, diaphragms, andintermediate bracket (item 4) together.Step #3: Removing the diaphragmassemblies.Use a 3/4" wrench or six pointedsocket to remove the diaphragmassemblies (outer plate, diaphragm,and inner plate) from the diaphragm rod(item 30) by turning counterclockwise.Insert a 6-32 set screw into thesmaller tapped hole in the innerdiaphragm plate (item 26). Insertthe protruding stud and the 6-32fastener loosely into a vise. Use a3/4" wrench or socket to remove theouter diaphragm plate (item 25) byturning counterclockwise. Inspect thediaphragm (item 14) for cuts, punctures,abrasive wear or chemical attack.Replace the diaphragms if necessary.Step #4: Installing the diaphragms.Push the threaded stud of the outerdiaphragm plate through the centerhole of the diaphragm. Thread the innerplate clockwise onto the stud. Use atorque wrench to tighten the diaphragmassembly together to 90 in lbs.(10.17 Newton meters) 120 in lbsSantoprene (13.56 Newton meters).Allow a minimum of 15 minutes toelapse after torquing, then re-torquethe assembly to compensate for stressrelaxation in the clamped assembly.Step #5: Installing the diaphragmassemblies to the pump.Make sure the bumper (item 6) isinstalled over the diaphragm rod.Thread the stud of the one diaphragmassembly clockwise into the tappedhole at the end of the diaphragm rod(item 30) until the inner diaphragm plateis flush to the end of the rod. Insert rodinto pump.Align the bolt holes in the diaphragmwith the bolt pattern in the intermediatebracket (item 4). Make sure the moldeddirectional arrows on the diaphragmpoint vertically.Fasten the outer chamber (item 13)to the pump, using the capscrews (items9 & 11), hex nuts and flat washers.On the opposite side of the pump,pull the diaphragm rod out as faras possible. Make sure the bumper(item 6) is installed over thediaphragm rod.Thread the stud of the remainingdiaphragm assembly clockwise into thetapped hole at the end of the diaphragmrod (item 30) as far as possible and stillallow for alignment of the bolt holesin the diaphragm with the bolt patternin the inner chamber. The moldeddirectional arrows on the diaphragmmust point vertically.Fasten the remaining outer chamber(item 13) to the pump, using thecapscrews (items 9 and 11) and hexnuts.Step #6: Re-install the elbow/spacer/manifold assemblies to thepump, using the capscrews (items 9 &10) and hex nuts.The pump is now ready to bere-installed, connected and returned tooperation.OVERLAY DIAPHRAGM SERVICINGThe PTFE overlay diaphragm(item 15) is designed to fit snuglyover the exterior of the standard TPEdiaphragm (item 14).The molded directional arrowson the overlay diaphragm must pointvertically.Follow the same proceduresdescribed for the standard diaphragmfor removal and installation.Follow the same proceduresdescribed for the standard diaphragmfor removal and installation. Note:The One-Piece Bonded diaphragm isinstalled in the direction as shown in thelower right illustration above.One Piece DiaphragmServicing (Bonded PTFE withintegral plate)The One Piece diaphragm has athreaded stud installed in the integralplate at the factory. The inner diaphragmplate has a through hole instead of athreaded hole.Place the inner plate over thediaphragm stud and thread the firstdiaphragm / inner plate onto thediaphragm rod only until the inner platecontacts the rod. Do not tighten.A small amount of grease may beapplied between the inner plate and thediaphragm to facilitate assembly.Insert the diaphragm / rod assemblyinto the pump and install the outerchamber. Turn the pump over andthread the second diaphragm / innerplate onto the diaphragm rod. Turn thediaphragm until the inner plate contactsthe rod and hand tighten the assembly.Continue tightening until the bolt holesalign with the inner chamber holes. DONOT LEAVE THE ASSEMBLY LOOSE.IMPORTANTRead theseinstructionscompletely, beforeinstallation and startup.It is the responsibility of the purchaserto retain this manual for reference. Failureto comply with the recommendationsstated in this manual will damage thepump, and void factory warranty.m07nmdl1sm-rev0513 Models M07 Non-Metallic Page 26