Low‐level LED (yellow)
Pressure regulator and
adjustment screw
Operation
4-17
Part 1024496_06
2014 Nordson Corporation
Monitor the Level of Hot Melt in the Tank
The tank contains a low‐level float switch. When the volume of hot melt in the
tank drops below one‐half of the tank's rated capacity, the float switch turns
on the low‐level LED located inside the tank key.
Nordson recommends that the tank be kept at least one‐half full while
the melter is operating.
NOTE: The melter is also equipped with a low‐level output that can
be connected to a customer‐supplied signaling device or process control
system. Refer to Section 3, Installing Melter Outputs, for information about
using the low‐level output.
Monitor and Adjust the Operating Air Pressure
The air pressure gauge located on the front of the melter indicates the
air pressure that is supplied to the melter's pump. The air pressure must
be adjusted to meet the requirements of your manufacturing process.
NOTE: The minimum operating air pressure is 0.7 bar (10 psi). Operating
the melter with the air pressure set to less than 0.7 bar (10 psi) may cause
the pump to function erratically.
Use the adjustment screw located to the right of the pressure gauge to adjust
the operating air pressure.
Typically, adjustments to the operating air pressure are made in order
to change the volume of hot melt dispensed by the guns. Other factors
such as the temperature of the hot melt, the speed of the manufacturing line,
and the type and size of the nozzles used on the guns also impact
the volume of hot melt that is dispensed.
CAUTION! Do not force the air pressure adjustment screw beyond its normal
range of adjustment. Forcing the adjustment screw beyond its normal range
of adjustment will damage the pneumatic assembly.
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