Appendix l B-1
Installing a Precooler (Optional)
You can add a precooler to the Carousel Plus W Series Dryer by ordering the
optional precooler assembly. Installation is easy.
The optional precooler requires a source of city, tower, or chiller water and a dis-
charge or return line. You can use water at temperatures up to 85°F {30°C}. But
the water flow should be at least 3 gal/min {11.4 liters/min} for W dryer models
150 - 400.
1 Stop the dryer and lockout the main power.
2 Remove side panels
3 Remove the knockout for the precooler
housing on the dryer.
4 Install the precooler housing. Make sure the stag-
gered holes in the precooler housing mounting plate
align with the holes in the precooler housing.
5 Disconnect the hose from the bottom of the process heater
tube. Connect the hose to the inlet of the precooler housing.
6 Connect a piece of hose from the bottom of the precooler
housing to the inlet of the process heater.
Precooler
Knockout
(continued)
Precooler
housing
Inlet to heater
Precooler outlet
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