Technical data

1 1

Repair

7-5

P/N 7135049A

E 2007 Nordson Corporation

VBC_Siemens

5. Place a container under the pump (3) to collect any material left.

6. Detach pump.

7. Clean sealing surface on the plate (4). If necessary, heat material

residue with a hot air fan, then remove.

8. Allow melter to cool to room temperature.

Fig. 7-5

Attaching Gear Pump

NOTE: The gear pump may only be screwed on when the melter is cold.

NOTE: The sealing surfaces on the plate and the pump must be clean.

Always replace all O-rings.

1. Apply sealing paste (Refer to section Maintenance, Processing

Materials) to the new pump.

2. Apply high temperature grease (Refer to section Maintenance,

Processing Materials) to the pump fixing screws and attach only when

the tank is cold. Tighten screws crosswise using a torque wrench.

Torque: 25 Nm / 220 lbin.

3. Refer to Important Regarding Coupling

The axial offset, meaning the sum of the four gaps (4, Fig. 7-7), must

result in at least 2 mm (0.08 in) of air to accommodate the heat

expansion during operation.

Permitted radial offset: 1 mm (0.04 in)

Permitted angle offset: 1°

4. Slide coupling half onto the shaft of the new pump.

5. Center the coupling disks (1) to one another and allow the coupling links

(2) to hang vertically (Refer to Fig. 7-7). Turn the coupling half on the

motor shaft to its position by hand.

6. Tighten coupling screws (3).

7. Heat melter to operating temperature and open tank isolation valve

again.

Fig. 7-6