Replacing Gear Pump - Nordson VersaBlue VBN 50 Manual

7-2
Repair

Replacing Gear Pump

Tank Isolation Valve
Tank side
0
1
Pump side
Fig. 7-1
Detaching Gear Pump
2
Fig. 7-2
P/N 7146386A
Nordson recommends replacing the pump and sending the old one in to be
repaired.
WARNING: Hot! Risk of burns. Wear appropriate protective
clothing/equipment.
NOTE: Operate the tank isolation valve only when the melter is heated to
operating temperature.
Pin in position 0: Closed
Pin in position 1: Open
1. Close tank isolation valve.
NOTE: Detach the gear pump only when the material is soft (70 °C/158 °F,
depending on material).
CAUTION: The motor is precisely aligned and may not be be slid back with
the bracket in the slot.
2. Turn the coupling until the screws of the coupling half shells are more
easily accessible.
3. Release the screws of the coupling half shells on the pump side.
4. The released coupling halves can fall apart. Remove carefully to prevent
1
separation. Store the coupling halves and protect them from dust. They
will be needed again.
5. Place a container under the pump (1) to collect any material left.
6. Detach pump.
7. Clean sealing surface on the plate (2). If necessary, heat material
residue with a hot air fan, then remove.
8. Allow melter to cool to room temperature.
VBN w/o Control System E 2008 Nordson Corporation