Fulfill
Retrofit for Mesa Melters
26
Part 1121938_02
2013 Nordson Corporation
Level Sensor Adjustment and Calibration
NOTE: Refer to Appendix A, Retrofit Refill System With Nordson Level Sensor, for updated
information.
The level sensor consists of a level probe and a control box. The level probe
permanently connects to the control box by a wire. The level probe has a
black line around its diameter near the tip to note the maintained adhesive
level.
CAUTION! Do not raise the fill line of the probe above 2 inches from bottom
of the probe holder. Doing so will degrade the level sensor's performance.
Figure 14 Adjustment potentiometer
See Figure 14. The LED indicator next to the adjustment potentiometer on
the control box changes color from green to amber, depending on the
adhesive level that the probe detects. When adhesive drops below the
desired level, the LED will turn green. When adhesive reaches or exceeds
the desired level, the LED will turn amber. The adjustment potentiometer
sets the sensitivity of the level sensor. Different adhesives require different
calibration settings. Adhesives that build up on the level probe require less
sensitivity, while adhesives that do not build up on the level probe require
more sensitivity. The level sensor should be recalibrated any time the level
probe's height is changed or the type of adhesive being used changes.
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