DuraBlue II Customer Product Manual - 第100页

Service 5-10 Part 1126931_01  2018 Nordson Corporation Replacing a Pump (contd) 4. Remove the hydraulic side covers. Refer to Detaching the Exterior Panels earlier in this section as needed. 5. Place a drain pan under t…

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Service
5-9
Part 1126931_01
2018 Nordson Corporation
Replacing a Pump
Follow this procedure to replace a pump. You will need the following items:
tool kit, including a torque wrench
drain pan
cleaning supplies
replacement pump
replacement pump O‐rings
O‐ring lubricant
anti‐seize lubricant
NOTE: To rebuild a pump, contact your Nordson representative for
assistance.
1. Ensure the melter is at operating temperature.
2. Relieve system pressure. Refer to Section 1, Safety.
3. See Figure 5‐5. Close the tank isolation valve.
Figure 5‐5 Location of the tank isolation valve
Service
5-10
Part 1126931_01
2018 Nordson Corporation
Replacing a Pump (contd)
4. Remove the hydraulic side covers. Refer to Detaching the Exterior
Panels earlier in this section as needed.
5. Place a drain pan under the pump.
6. See Figure 5‐6. Loosen the screws that secure the motor to the base of
the melter and then slide the motor back.
7. Slide the coupling sleeve (2) off of the coupling hubs (1 and 3), loosen
the pump coupling hub set screws, and remove the pump coupling hub.
1
3
2
Figure 5‐6 Coupling assembly components
1 Motor coupling hub
2 Coupling sleeve
3 Pump coupling hub
Service
5-11
Part 1126931_01
2018 Nordson Corporation
8. See Figure 5‐7. Remove the pump screws (3) and then remove the pump
(2) and O‐rings (1).
1
2
3
Figure 5‐7 Replacing a pump
1 O‐rings 2 Pump 3 Pump screw
9. Clean the surface of the manifold where the pump mates to it.
10. Allow the melter to cool to room temperature.
11. Install the pump coupling hub on the pump shaft, ensure that it is flush
with the pump shaft, and tighten the hub set screws.
12. Apply O‐ring lubricant to new pump O‐rings and install them on the pump.
13. Apply anti‐seize lubricant to the pump screws and secure the new pump
to the manifold with the screws. Use a torque wrench to tighten the
screws in a criss‐cross manner to 25Nm(222 in.‐lb).