Pre-Cooler Water Connections; Compressed Air Connection - NovaTec NovaWheel NWDC Series Instruction Manual

2.5 Pre-Cooler Water Connections

A Cooling Coil is installed in NWDC series dryers and is required to lower the hopper
return temperature and this increases the efficiency of dryer IF THE DRYING
TEMPERATURE IS ABOVE 225°F .
5-A: Tower, city or chilled water is required at between 40 to 85°F. Connect the cooling water
supply and return using flexible hose that is at least 2 feet long, to allow for easy removal of
the cooling coil for cleaning. The water flow rates and the required customer connection sizes
for different models are shown in the chart below.
5-A
3/8" Water Outlet Connection
On NWDC-25 through NWDC-75
3/8" Water Inlet Connection
On NWDC-25 through NWDC-75
½" O.D. water hose
NOTE:
should be used to get
proper water flow.
Model NW-25NC-DC
Water Inlet/Outlet
Connections
Flow Rate-GPH
Gallons per Hour
NOTE: Cooling water is required if drying temperature is over 225°F.
The process airstream must be connected to an external cooling coil if the drying
temperature is below 170°F.

2.6 Compressed Air Connection

The touch screen control operates a dual station vacuum valve inside the dryer to
activate vacuum to either the hopper receiver or the machine mount receiver. A clean
compressed air supply (60-90 psi) should be connected to the 1/8" NPT inlet.
NWDC IM 26 MAR 2014
Compressed Air
Connection for Receiver
Selection Valve
NW-50NC-DC
3/8"
3/8"
0.25 0.5
Contact Factory for Options.
© 2014 Novatec, Inc. All Rights Reserved
NWDC IM 26 MAR 2014
3/8" FNPT Water connections for
-100 and -150 models
NW-75NC-DC NW-100NC-DC
3/8 "
3/8"
0.75 1.0
Knockout for electrical
connection
NW-150NC-DC
3/8"
1.5
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