13
Donaldson Company, Inc.
Inlet Hopper with Vibration Isolators
A vibration isolation kit is for top-mounted units installed
on machine centers sensitive to vibration. The kit
includes four isolators, a support frame, hopper,
152 mm (6-in) diameter flexible duct and a duct collar
with mounting flange and two hose clamps.
1. Carefully lift unit and turn over so the bottom inlet is
facing up.
2. Remove plugs or existing hardware from the five
holes on the unit’s left side.
3. Apply sealant to the leg’s top flange and secure to
unit using the hardware removed in Step 2.
4. Apply sealant to the inlet collar toward the outside
edge of the bolt pattern. Fasten inlet collar to the
hopper’s bottom flange using the bolts, washers, and
hex nuts supplied.
5. Apply sealant around the hopper’s top flange toward
the outside of the bolt pattern.
6. Align the top flange of the hopper with the bolt
pattern on the bottom of the unit and secure using
6mm bolts and washers supplied.
7. Attach remaining leg to the right side of the unit
following the same procedure.
8. Turn unit upright, lift into position over the machine
center and lower slowly. Do not remove crane.
9. Match-drill four holes in the machine center for
securing the legs.
10. Position the inlet collar on the machine center and
trace the inlet opening and bolt pattern. Remove inlet
collar, cut inlet hole, and drill bolt holes using a
3/16-in diameter drill bit.
11. Apply a 6 mm (1/4-in) diameter bead of sealant to the
machine center, toward the outside edge of the bolt
pattern.
12. Align collar and fasten to machine center using
1/8-in customer-supplied bolts, washers, and hex
nuts.
13. Fasten the isolators to the machine center.
14. Lift unit into position over the vibration isolators and
lower slowly. Fasten using the supplied hardware.
15. Connect the flexible duct using the supplied hose
clamps.
sealant
hopper
sealant
flex-duct collar
hose clamp
flex-duct
hose clamp
inlet collar
leg
vibration
isolator
Inlet Hopper with Vibration Isolators
