AEC WD 350 through WD3000 Dehumidifying Dryers - Manual (Page 49)

7 Maintenance
7-1 Work Rules
The installation, operation, and maintenance of this equipment is to be conducted in accordance
with all applicable work and safety codes for the installation location. This may include, but is
not limited to, OSHA, NEC, CSA, and any other local, national, and international regulations.
In addition, you must observe the following specific work rules:
Keep these operating instructions on hand and follow them when installing, operating, or
maintaining your dryer.
If the instructions become damaged or unreadable, you can obtain additional copies from
AEC/Whitlock.
Only qualified personnel familiar with this equipment should work on or with this unit.
Work only with approved tools and devices.
Disconnect power before servicing your dryer. If the disconnect switch you installed has a
lockout, lock it in the OFF position before you perform any maintenance or service.
7-2 Servicing Process Air Filters
Important!
Operating the dryer without the process air filter installed voids your warranty!
Filter cleaning is an important part of your dryer maintenance program.
WD10MR/FR through WD50MR/FR dryers have a single cartridge canister-type filter in the
process air loop. It is mounted above the process blower on the rear of the dryer. This filter
protects the blower from plastic fines drawn in from the drying hopper. Regular filter cleaning is
essential to keep your dryer operating at peak efficiency.
You can wash or blow out the filter with compressed air, but remember—you reduce dirt
holding capacity with each washing. Washing a filter is risky, because dirt can reach the clean
side of the filter, and the filter could become damaged from high pressure washing or blowing.
You can carefully clean or wash the filter when air flow becomes restricted. Do not wash filters
more than six (6) times or use them for more than a year, whichever comes first.
Page 48 WDMR and WDFR Series Dehumidifying Dryers