NWDC
IM 26 MAR 2014 © 2014 Novatec, Inc. All Rights Reserved
Page 11
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NWDC IM 26 MAR 2014
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.
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.
Contact Factory for Options.
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.
Model
NW-25NC-DC
NW-50NC-DC
NW-75NC-DC
NW-100NC-DC
NW-150NC-DC
Water Inlet/Outlet
Connections
3/8
”
3/8”
3/8 “
3/8
”
3/8
”
Flow Rate-GPH
Gallons per Hour
0.25
0.5
0.75
1.0
1.5
5-A
3/8” Water Outlet Connection
On NWDC-25 through NWDC-75
3/8” Water Inlet Connection
On NWDC-25 through NWDC-75
3/8” FNPT Water connections for
-100 and -150 models
Knockout for electrical
connection
Compressed Air
Connection for Receiver
Selection Valve
NOTE:
½” O.D. water hose
should be used to get
proper water flow.
