2
Operator Controls
Become familiar with the operator controls before
operating the bulk melter.
Pneumatic Unit
See Figure 1.
The pneumatic unit controls melt platen movement.
It has a pneumatic switch and two-hand control
buttons.
Pneumatic Switch
Use the pneumatic switch (2) to raise and lower the
melt platen.
Select . . . To . . .
Stop stop melt platen movement.
Lower lower the melt platen.
NOTE: The melt platen can only
be lowered when there is a drum
in the system and the drum clamp
is closed.
Raise
(Aerate Drum)
raise the melt platen. If the melt
platen is inside of the drum, the
drum is aerated automatically
Refer to Aerating Drum for more
information.
Pressure Controller and Gauge for Operating
Pressure of Cylinders
Operating pressure is applied to the pneumatic
cylinders when the melt platen is lowered into and
raised out of the drum.
Depending on the material to be processed, the
pressure control (4) may need to be set to a different
value. The optimum setting may need to be
determined by trial and error. The gauge (3) displays
the operating pressure.
NOTE: The maximum operating pressure is
7.5 bar (109 psi).
Two-Hand Control
The two-hand control (1) on the pneumatic unit can
only be operated by one person using both hands. It
is used to lower the melt platen into the drum. When
the melt platen enters the drum, the system
automatically switches to the regular lowering mode.
1. Set the pneumatic switch (2) to Lower.
2. Press both buttons on the two-hand control at the
same time (within 0.5 seconds) until the melt
platen enters the drum.
2
1 1
Stop
Lower
0
Lifting with automatically
activated drum aeration
3
4
Figure 1 Pneumatic Unit
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