AEC HE Mass Flow Series Drying hoppers - Manual (Page 50)

HE
• CHE • BCHE Mass Flow Series Drying Hoppers
Page 49
7-4 Servicing Process Air Filters
Optional
Important!
Operating the dryer without the process air filter installed voids your warranty!
Filter cleaning is an important part of your dryer maintenance program.
Drying hoppers with the optional process air filters have a single cartridge canister-type filter in
the process, air loop before entering the blower. The process filter is located in a filter housing
near the blower. The filter protects the blowers from plastic fines drawn in from the drying
hopper. Regular filter cleaning is essential to keep your dryer operating at peak efficiency.
The filters can be washed or blown out, but remember, you reduce dirt holding capacity with
each washing. The risk of dirt reaching the clean side of the filter during cleaning, plus possible
filter damage from high pressure washing or blowing, makes washing a gamble.
You can carefully clean or wash the filter when airflow becomes restricted. Do not wash filters
more than six (6) times or use them for more than a year, whichever comes first.
Use a detergent that won’t damage filter media. Such a detergent permits easy removal of dirt
particles through flushing and rinsing. An effective detergent removes the fine particles from the
pores of the filter media.
The filter manufacturer recommends FM 1400 washing compound. It is formulated specifically
for air filter element cleaning. It is non-sudsing and works in hot or cold water. FM 1400
contains biodegradable synthetic detergents and is non-phosphate, non-NTA. For more
information, contact Filter Service Corporation, 2603 A West Main, Farmington, NM
1-505-326-1127.
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.
Vacuuming
Try vacuum-cleaning a soiled filter first. Vacuuming removes most large particles and surface
contaminants, and may be all that’s needed 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.