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E-3 l Appendix
Cleaning the Precooler
If you have the optional precooler, you need to clean the precooler coils to keep
them working efficiently. Cleaning frequency depends on the type and amount of
material you process.
1 Stop the dryer and lockout the main
power.
2 Turn off the water flow to the water
supply line. Disconnect supply and return
lines.
3 Remove the plastic precooler cover.
NOTE: If an optional flow control was added
with the precooler, remove the compression
fitting from the precooler inlet. Loosen the compression fitting on the flow control, then
swing the copper water supply tube out and away from the precooler inlet.
4 Remove the five screws securing the precooler assembly in the precooler
housing.
(continued)
✐
✒
TIP: If the precooler (without
a flow control) was installed
using the recommended
24 in. (61 cm) of flexible
hoses, there is no need to
disconnect the hoses from
the precooler inlet and outlet.