6
Aerating Drum
WARNING: Risk of burns. When the melt
platen leaves the drum, hot material can
come out and/or drip from the melt platen.
Wear suitable protective clothing.
See Figure 4.
If the melt platen is inside of the drum, the drum must
be aerated to support raising. Aerating forces
compressed air under the melt platen.
Drum aeration begins automatically when the
pneumatic switch is set to Raise. Aeration ends when
the pneumatic switch is moved to 0/Stop.
Compressed air
Melt platen
Drum
Figure 4 Aerating Drum
Deaerating Drum
WARNING: Risk of burns. Hot material may
flow out of the deaeration valve. Wear
suitable protective clothing.
See Figure 5.
The drum must always be deaerated when the melt
platen is moved into the drum. When the drum is
deaerated, the air that is under the melt platen
escapes.
See Figure 6.
1. Place a reservoir (3) under the drip pan (2).
2. Verify that the system has reached operating
temperature.
3. Open deaeration valve (1) when the upper
sealing ring on the melt platen (4) is completely
immersed in the drum.
4. Close deaeration valve when the material is free
of bubbles.
5. Properly dispose of material according to local
regulations.
Air
Melt platen
Drum
Figure 5 Deaerating Drum
1
2
3
4
Figure 6 Opening the Deaeration Valve
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