Hired-Hand External Damper Fans - Manual (Page 6)

Part No. 4801-5402 Rev. 2/09 Mega-Flow External Damper Fans & Cone Page 6 of 13
Figure 3 Install Belt
Belt
Tensioner
Straight
Edge
Fan Pulley
5. Tilt the fan motor mount bracket upward and install the other two bolts and nuts (provided) in the second bolt
hole as shown in Figure 2. Tighten all four upper and lower bolts and nuts securely.
6. Install the Motor using four 5/16” carriage bolts (1002-2373) and four lock nuts (1001-1735). See Figure 2.
Tighten bolts securely.
7. For Direct Drive Fans, skip to Step 8. Install the Belt.
Refer to Figure 3. Use a straight edge to align the
pulleys as shown. Securely tighten set screw of motor
pulley and prop pulley. Recommended torque is 110 in.
lbs. minimum.
After the pulleys are aligned, install belt (1022-3107)
onto motor pulley, tension pulley, and prop pulley. See
belt installation sheet.
8. Apply power to fan at this point to check motor/prop for proper
operation. WARNING: Incorrect motor rotation can
damage fan internals and possibly cause injury!
Remove all electrical power after testing motor before
proceeding with Fan installation.
6. Assemble Cone
WARNING!
During Cone Installation Be Sure That Fan Motor Is Not Plugged Into Any Power Source.
Always Double Check Power Sources.
!
Packing List for One(1) Cone/Inlet Kit
54” Cone 52” Cone 48” Cone 36” Cone Description Quantity
0404-10603 0404-8253 0404-10332 0404-10048 Cone Sections 4
6403-3156 6403-3150 6403-2703 6403-3165 Damper Ring Assy. 1
1004-1424 1004-1424 1004-1424 1004-1424 3/8"-16 x 1-1/4” Cap Screws 7
1001-1457 1001-1457 1001-1457 1001-1457 3/8"-16 Nuts 7
1003-6027 1003-6027 1003-6027 1003-6027 3/8" Washers 10
6403-3050 6403-0147 6403-0156 6403-0135 PVC Coated Cone Guard 1
6403-3174 6403-3162 6403-0096 6403-3167 Inlet Assembly 1
0404-10803 6403-7606 0404-10648 0404-10290 Damper Bumper Rod 1
1001-1446 1001-1446 1001-1446 1001-1446 ¼" x20 Nuts 4
1004-9045 1004-9045 1004-9045 1004-9045 #14 x ½ screws 12
1004-2533 1004-2533 1004-2533 1004-2533 ¼"-20 x 1" Screws 4
0404-10652 0404-8252 0404-10516 0404-10291 Cone Bracket 4
1024-0105 -------------- 1024-0105 1024-0105 Damper Bumper Spring 1
Tools Required
Cordless drill
Rubber Mallet
Ratchet
7/16 in. (11 mm) Wrench
9/16 in. (14 mm) Wrench
Marker or Scribe
9/16 in. (14 mm) Socket
3/8”, 5/16”, 7/16” Nut
Driver
½”socket
7/16 in. (11 mm) Socket