
Air Diffuser Instructions
AutoFlow Top Dry
42" Fan
PNEG-462
10-12-94

1. Mark and drill one 3/8” hole in the center of long side of each diffuser hanger. Mark and
drill two 3/8” holes in the short side of each hanger.
2. Bolt the long side of the hangers to the endmost slots of the top plate (TD-100665) as
shown below.
3. Hold the top plate up under the bottom flange of the “C” channel in front of the fan
opening. Mark and drill four 3/8” holes into bottom flange using diffuser hangers as a
guide. Using 5/16” x 3/8” bolts and nuts bolt the top plate to the “C” channel.
Top Plate
TD-100665
Self-drilling Screws
S-7229
Air Diffuser Hangers (2)
TD-100750
Self-drilling Screws
S-7229

4. Attach front plate to the top plate with four 1/4” x 1” self-drilling screws.
5. Bolt the side brackets in the front plate slot with the angles outward. Field drill two holes
(on inside corrugation hills) through the sidewall and install 5/16” x 3/4” bin bolts and
nuts.
6. Position the side plates on each side with the angle outward and fasten in place using six
1/4” x 1” self-drilling screws.
NOTE: The corner bolt will need to be removed and reinstalled through the side plate,
side bracket and front plate.
Self-drilling Screws
S-7229
Left Side Plate
TD-100664
Right Side Plate
TD-100663
Front Plate
TD-100655
Side Bracket
TD-100656
Self-drilling Screws
S-7229

Grain Systems Inc., • 1004 E. Illinios St. • Assumption, Il 62510 • (217) 226-4421Grain Systems Inc., • 1004 E. Illinios St. • Assumption, Il 62510 • (217) 226-4421
Grain Systems Inc., • 1004 E. Illinios St. • Assumption, Il 62510 • (217) 226-4421
Grain Systems Inc., • 1004 E. Illinios St. • Assumption, Il 62510 • (217) 226-4421Grain Systems Inc., • 1004 E. Illinios St. • Assumption, Il 62510 • (217) 226-4421
11/1/9411/1/94
11/1/94
11/1/9411/1/94