NWDC
IM 26 MAR 2014 © 2014 Novatec, Inc. All Rights Reserved
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NWDC IM 26 MAR 2014
6
FUNCTION CONTROLS
The NWDC Series dryers come complete with the following controls:
6.1 Process Temperature Control (Drying Temperature)
The Temperature Control is a part of the NovaWheel NovaTouch PLC controller and
controls the process outlet temperature as per the set value. In addition, there is a
process high temperature limit thermostat that is provided for extra safety. (Refer to the
controller section).
6.2 Regeneration Temperature Control
The regeneration temperature is controlled by the NovaTouch PLC controller. In addition,
there is a regeneration high temperature limit thermostat, which provides extra safety. The
regeneration temperature is set at about 380°F. (190°C) and should not be changed.
6.3 Process & Regeneration Air Filter Pressure Switches (PS)
The air pressure differential across the process
filter and the regeneration filter is monitored
and the NovaTouch display will alarm and show
when a filter needs to be cleaned or replaced.
These are factory set but often need to be
adjusted in the field once the customer loads
resin in the hopper.
Access pressure switches through after removing the back panel from the dryer. Remove
Phillips screw that holds clear cover in place (Fig. 1) . Turn knob clockwise or counter-
clockwise to either increase or decrease
6.4 Process Air Dew Point Monitor
It measures the process air dew point from the dryer.
6.5 Intelligent Regeneration
Intelligent Regen constantly monitors the regeneration inlet and outlet temperatures and
controls them to optimize the energy and dew point performance of the dryer.
6.6 Conveying Control
Provides entry of load/dump times and number of attempted loads before No-Load Alarm
is activated plus Blow Back control, if specified.
Process Filter Pressure Switch
Regen Filter Pressure Switch
Fig. 1
Fig. 2
