AltaPail II Bulk Melters Product Manual.pdf - 第167页

2 3 1 4 Repair 10-5 Part 1121836_03 E 11/2014 Nordson Corporation Replacing Melting Plate and /or Se aling Rin g WARNING: Hot! Risk of burns. Wea r heat-protective gloves. 1. Heat the pla ten until the ma terial soften s…

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Repair
10-4
Part 1121836_03
E 11/2014 Nordson Corporation
Replacing O-rings
WARNING: System and material pressurized. Relieve bulk melter pressure
before disconnecting pressurized components (e.g. hoses, pressure
sensors). Failure to observe can result in serious burns. Refer to page 10-1,
Relieving Pressure.
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
When leakage occurs, e.g. at the hose connections, the O-rings must be
replaced. Observe the following:
S
Clean and lubricate O-ring groove. Nordson recommends special high
temperature grease; refer to page 8-2, Processing Materials.
S
Also lubricate O-ring
S
Do not use removed O-rings again.
S
Tighten hose connection and blind covers with a torque wrench to
9.5 Nm.
2
3
1
4
Repair
10-5
Part 1121836_03
E 11/2014 Nordson Corporation
Replacing Melting Plate and/or Sealing Ring
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
1. Heat the platen until the material softens (approx. 70 ° C / 158 ° F,
depending on the material).
2. Place a clean, hard, heat-resistant resting surface (e.g. metal plate) on
the container and lower the platen onto the surface.
3. Release all of the fixing screws (1).
4. Raise the platen approx. 10 cm. The melting plate remains on the resting
surface.
5. Shut down the bulk melter.
6. Carefully extract the temperature sensor from the bore (4).
7. Replace the O-rings (3). Clean and grease the grooves. Refer to page
8-2, Processing Materials for the type of grease to be used.
The sealing ring (2) can now be replaced. Refer to page 8-2, Processing
Materials for the type of grease to be used.
8. Apply heat transfer compound (Refer to page 8-2, Processing Materials)
to the temperature sensor and insert it into the bore (4).
9. Screw the melting plate into place:
a. Grease the fixing screws and screw in loosely such that the platen
and melting plate have thermal contact
b. Wait until the platen and melting plate are at the same temperature
c. Tighten the fixing screws with 10 Nm.
NOTE: The next time the platen is cold (e.g. weekend, factory vacation)
tighten the fixing screws again with the stated torque.
1
Repair
10-6
Part 1121836_03
E 11/2014 Nordson Corporation
Replacing Temperature Sensor or Thermostat
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
WARNING: Risk of electrical shock. Failure to observe may result in
personal injury, death, or equipment damage.
1. Disconnect the bulk melter from the line voltage.
2. Remove the cover (1).
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3
3.
Thermostat (2)
1. Apply heat transfer compound (Refer to page 8-2, Processing
Materials) to the new thermostat and replace.
Temperature sensor (3)
1. Carefully pull the temperature sensor out of the melting plate by the
connecting cable. If it cannot be pulled out easily, the melting plate
must be removed. Refer to page 10-5, Replacing Melting Plate.
2. Apply heat transfer compound (Refer to page 8-2, Processing
Materials) to the temperature sensor and insert/fasten.
3. Re-attach the cover.
4. Start up the bulk melter again.