19
Operation (Continued)
For boxes which are fully packed with products
that support the top flaps, the adjustment of this
regulator is not critical since the boxes can
support the pressure of the upper frame (drive
belts) at a wide range of regulator settings.
However, if under-filled or fragile boxes are
sealed, this regulator can be used to set the
upper frame pressure to a reduced level that is
still adequate to positively convey the box and to
prevent damage of boxes. The regulator setting
can be locked by pushing the knob inward.
Note: A precision regulator is used to
balance the top drive assembly. Due to
the self relieving feature of this regulator a
small amount of air will continually vent to
the atmosphere. This is normal and
amounts to approximately 3 liter/min
[0.1 SCFM ]. Figure 3-6—Mechanical Latch, Upper
Drive Assembly
Main Air Pressure Gauge (Figure 3-2)
Indicates main air regulator pressure setting. Air
regulator should be adjusted so gauge reads 5.2
bar gauge pressure [75 PSIG].
Pneumatic Valve, Drive Assembly Raising
Switch (Figure 3-6)
The Pneumatic Valve Drive Assembly Raising
Switch is used to hold the upper drive assembly
to its fully raised position for tape threading and
maintenance.
To raise the drive assembly, turn the switch to
the right. To lower the drive assembly to its fully
lowered position, turn the switch to the left.