NWB & NWB-HC IM28 OCT 2014
Page 11
Instruction Manual NWB & NWB-HC IM 28 OCT 2014
6.0
FUNCTION CONTROLS
The NWB 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 after opening the side panel of
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.
Process Filter Pressure Switch
Regen Filter Pressure Switch
Fig. 1
