Air pressure adjustment screw
(requires a 5‐mm hex key)
Operation
5-17
Part 1123087_02
3/2014 Nordson Corporation
Monitoring and Adjusting the Pump Air Pressure
Typically, adjustments to the pump air pressure are made to change the
volume of adhesive dispensed by the applicators. Other factors, such as the
temperature of the adhesive, the speed of the manufacturing line, and the
type and size of the nozzles used on the applicators, also impact the volume
of adhesive that is dispensed.
CAUTION! Do not force the air pressure adjustment screw beyond its normal
range of adjustment. Doing so will damage the pneumatic assembly.
Use a 5‐mm hex key to turn the air pressure adjustment screw (located
above the pressure gauge) to adjust the pump air pressure.
The air pressure gauge located on the front of the melter indicates the
air pressure that is supplied to the pump.
NOTE: The minimum pump air pressure is 0.7 bar (10 psi). Operating the
melter with the air pressure set to less than 0.7 bar (10 psi) can cause the
pump to function erratically.
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