User guide

Appendix l B-1
Cleaning the Precooler Coils
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 bolts securing the precooler cover. Remove the cover.
4 Remove the precooler by pulling it out of the precooler housing.
5 Clean the assembly using a mild soap and water. Let the assembly dry
thoroughly before installation.
NOTE: In cases of heavy volatiles, steam cleaning or the use of solvents, such as ace-
tone, may be necessary. Be sure to test a small area with the solvent you have selected
to be sure there is no adverse reaction.
6 Inspect the condition of the gasket. If it is damaged, replace the gasket.
7 Reassemble by repeating the steps in reverse order.
8 Connect the water supply line to the inlet. If a manual shut off valve is
used, it should be mounted on the inlet line as well.
9 Connect the outlet of the precooler to the inlet of the flow control valve
using the pre-shaped copper tubing and compression fittings provided.
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.
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