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5-2 Preventative Maintenance
This section describes maintenance procedures which will increase the longevity and
efficiency of your dehumidifying dryer. Perform them at the regular intervals listed on the
dryer checklist on the previous page.
Servicing Process Air Filters
Caution! Operating the dryer without the process air filter installed voids your
warranty!
Filter cleaning is an important part of your dryer maintenance program.
Dehumidifying dryers have a single cartridge canister-type filter in the process air loop. The
filter protects blowers from plastic fines drawn in from the drying hopper and prevents the
desiccant from being contaminated. Regular filter cleaning is essential to keep your dryer
operating at peak efficiency.
You can blow or vacuum the dirt out of the filter with compressed air, but remember, it could
become damaged from high-pressure blowing.
Recommendations for Cleaning and Replacing Filters
• Turn off and/or lock out electrical power to the dryer.
• Remove the threaded fastener securing the filter access cover, then remove the cover.
• Remove the nut on the center retaining rod to remove the filter cartridge.
Figure 9: Air Filter Location and Disassembly
Thumb Nut
Clamp
Dust Can
Filter
Cartridge
Filter Housing
Air In
Air Out
Vacuuming
Try vacuum-cleaning a soiled filter first. Vacuuming removes most large particles and
surface contaminants, and may suffice for the first time you clean a filter. Use a commercial-
duty (recommended) or household vacuum cleaner. Vacuum the filter from the air intake
(dirty) side only.
15, 30, & 60 cfm Compact Dryers 30