Graco Diaphragm Pump 1590HSPSP1ASSASSPTPSEP21

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.

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 .

Warning: This procedure requires trained personnel with PPE!

Upload a photo of the product being pumped

Pressure Relief Procedure performed

Leak detector bushing unscrewed from the air side cover

Leak detector senses the presence of the product

If the leak detector successfully detected the product, clean the bushing and leak detector and re-install the leak detector and bushing into the air side diaphragm cover

If the leak detector fails to sense the product, troubleshoot the leak detector to see if the leak sensor has failed or the leak detector is unable to detect the product

Leak detector installed in the bushing

If using the ATEX leak detector, install the o-ring onto the leak detector before installation into the bushing

NOTE: Do not remove undamaged bearings.

This applies to FK, PS, and SP diaphragms.

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