C-1 l Appendix
Cleaning the Precooler Coils
If you have the optional precooler, you need to clean the coils to keep it 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.
NOTE: If an optional flow control was added with the precooler, remove the compression
fitting from the precooler inlet. Loosen the fitting on the flow control, then swing the
copper water supply tube out and away from the precooler inlet.
3 Remove the screws securing the precooler in the housing.
✒
TIP: If the precooler (without a flow control) was installed using the recommended 24 inch
(61 cm) of flexible hoses, there is no need to disconnect the hoses from the precooler inlet
and outlet.
4 Remove the precooler assembly from the precooler housing.
✐
(continued)
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