Graco 308550ZAD important safety instructions Reassembly Overmolded Diaphragms

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Reassembly – Overmolded Diaphragms

WARNING

To reduce the risk of serious injury, including amputation, do not put your fingers or hand be- tween the air cover and the diaphragm.

1.Lubricate and install the shaft u–cup packings (402*) so the lips face out of the housing (1). See Fig. 13.

2.Assemble the air side plate (104) onto the dia- phragm (403). The wide, radiused side of the plate must face the diaphragm. Apply medium–strength (blue) Loctite or equivalent to the threads of the diaphragm assembly. Screw the assembly into the shaft (24) hand–tight.

3.Grease the length and ends of the diaphragm shaft (24). Insert the shaft/diaphragm assembly into one side of the pump. Align the fluid cover (101) and the center housing (1) so the arrow (A) faces the same direction as the air valve. Secure the cover with the screws (107 and 108), handtight.

4.Torque the longer screws (108) oppositely and evenly to 190–220 in–lb (21–25 NSm), using a 13mm socket wrench. Then torque the shorter screws (107). See Torque Sequence, page 31.

5.Assemble the other diaphragm assembly to the shaft as explained in step 2. This diaphragm will be lifted off the air cover at this point.

6.Supply the pump with low pressure air (less than 7 psi [0.05 MPa, 0.5 bar]). The diaphragm will very slowly pull onto the air cover. Find the pressure that keeps the diaphragm close enough to secure with the screws, but does not let it contact the pilot pin.

NOTE: Do not deform the diaphragm manually. The diaphragm needs uniform pressure to deform properly for maximum life.

7.Align the fluid cover (101) and the center housing

(1) so the arrow (A) faces the same direction as the air valve. Secure the cover with two of the longer screws (108), handtight.

NOTE: If the diaphragm contacts the pilot pin and is forced away from the air cover, try Step 5 again. If necessary, return to Step 3.

8.Torque the longer screws (108) oppositely and evenly to 190–220 in–lb (21–25 NSm), using a 13mm socket wrench. Then torque the shorter screws (107). See Torque Sequence, page 31.

9.Reassemble the ball check valves and manifolds as explained on page 18.

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Contents Important Safety Instructions Instructions Parts ListModels Table of ContentsEquipment Misuse Hazard SymbolsToxic Fluid Hazard General Information InstallationTighten Screws Before First Use Toxic Fluid HazardGround all of this equipment GroundingAir Line Typical FLOOR-MOUNT InstallationMountings Installation of Remote Pilot Air LinesFluid Suction Line Fluid Outlet LineBolt Tightening Sequence Flange ConnectionsFluid Pressure Relief Valve Changing the Orientation of the Fluid Inlet and Outlet PortsAir Exhaust Ventilation Fire and Explosion HazardVenting Exhaust AIR Starting and Adjusting the Pump Pressure Relief ProcedureOperation Flush the Pump Before First UseMaintenance Problem Cause Solution TroubleshootingTroubleshooting Repairing the Air Valve ServiceDisassembly Tools RequiredReassembly Relieve the pressure. Disconnect all hoses Ball Check Valve RepairDiaphragm Repair Reassembly Standard Diaphragms Reassembly Overmolded Diaphragms 105 19 402 24 104 403 Bearing and Air Gasket Removal Detail of Air Valve Bearings Husky 2150 Polypropylene and Pvdf Pumps, Series a Pump MatrixFor Husky 2150 Polypropylene and Pvdf Pumps, Series a Repair Kit MatrixParts Air Motor Parts List Matrix ColumnMuffler Fluid Section Parts List Matrix ColumnSeat Parts List Matrix Column Ball Parts List Matrix ColumnDiaphragm Parts List Matrix Column 114 Torque Sequence Dimensions Front ViewSide View Pump Mounting Hole Pattern Dimension SST Center Aluminum Polypropylene Pvdf Cover 14-0.8 MPa, 1.4-8 bar Technical DataFeet meters Performance ChartPsi MPa, bar Fluid Flow GPM lpmGraco Information Graco Warranties
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