Graco Diaphragm Pump 15903APS02ASSASSPTPSEP21

Followed the Pressure Relief Procedure

Noted the connection locations of the leak detector wires

Disconnected the leak detector wires

Removed the leak detector from the bushing in the air side diaphragm cover

Do you want to remove the other leak detector from the other air side diaphragm cover?

Installed the leak detector in the bushing just past finger tight

Are you using the ATEX leak detector?

For use with PO and EO diaphragms.

Disassemble the Overmolded Diaphragms

NOTE: Diaphragm kits are available in a range of materials and styles. See Parts section.

1. Follow the Pressure Relief Procedure, page 9 .

NOTE: Kits are available for new check valve flappers, or check valve balls in a range of materials. Gasket kits also are available.

1. Follow the Pressure Relief Procedure, page 9 . Disconnect all hoses.

2. To drain the pump, pull the frame quick-release pins (207) and rotate the pump.

NOTE: After draining, rotate the pump to positions which will aid disassembly.

3. Remove the clamps (23) on the outlet manifold (17) and remove the manifold.

NOTE: Use care while removing manifolds to safely remove check valve components.

4. Remove remaining clamps, manifolds, gaskets and check valves.

This applies to FK, PS, and SP diaphragms.

NOTE: Overmolded diaphragms are covered in Overmolded Diaphragm Repair, page 16.

NOTE: Do not remove undamaged bearings.