DuraBlue II Customer Product Manual - 第99页

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  …

Service

5-8

Part 1126931_01

 2018 Nordson Corporation

Replacing a Motor or Coupling (contd)

4 mm (0.16 in.)

Figure 5‐3 Moving the motor assembly back 4 mm (0.16 in.)

10. Tighten the screws that secure the motor to the base of the melter

11. To ensure proper motor and pump shaft alignment, ensure that you can

freely slide the coupling sleeve back and forth by about 4 mm (0.16 in.)

each way.

12. Reconnect the motor cable wires to the same terminals from which they

were disconnected.

13. Reinstall the melter covers and restore the system to normal operation.

Pump

Tightening the Pump Screws

1. Ensure that the melter is turned off and that power has been

disconnected and locked out.

2. Ensure that the melter, tank, manifold, and pump are cold.

3. See Figure 5‐4. Tighten the screws to 25 Nm (222 in.‐lb).

Figure 5‐4 Tightening the pump screws

4. Restore the system to normal operation.

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.

Figure 5‐6 Coupling assembly components

1 Motor coupling hub

2 Coupling sleeve

3 Pump coupling hub