Nordson Hot-Melt Adhesive Melter PROBLUE 4

CAUTION: Handle the piston with care. Damaging the precision machined surface of the piston can result in failure of the pump.

Lower Ball Seat Assembly Removal

Unscrew the lower ball seat assembly (2) from the pump body.

Pull the piston (1) out of the bottom of the pump body.

Refer to Figure D-13 for visual guidance.

Carefully slide the valve spool out of the valve sleeve and set it aside onto a clean cloth.

Separate the upper detent and spring from the air manifold.

Hold the piston in-place by its wrench flats

Piston Cup and Seal Washer Removal

Remove the following components

Describe any issues encountered during removal

Are all components removed successfully?

Isolate the pump from the manifold

Remove the three M8 pump-mounting bolts from the front of the pump body

Rotate the top of the pump slightly toward the front of the melter while pulling the pump away from the manifold

Remove the air line from the back of the pump

Lift the pump clear of the melter, and place it in a bench vise or other suitable mount

Ensure the tank is empty by operating the melter normally.

Adjust the melter to the temperature recommended by the cleaning fluid manufacturer.

Press the Pump key to stop the pump.

Cleaning when changing hot melt

Wear appropriate protective equipment.

Wipe any residual hot melt from the inside of the tank.

Add the appropriate type and quantity of hot melt cleaning fluid to the tank.

Press the Pump key to start the pump.