Greenheck Isolation Assembly Instructions (468646) - Manual (Page 8)

Installation Instruction for Housed Spring Mounts
1. Set mountings on sub-base, shimming or grouting where required to provide a flat and level surface at the
same elevation for base mountings (1/4 inch maximum difference in elevation can be tolerated). Support the
full underside of the base plate; do not straddle gaps or small shims.
2. Bolt mountings to floor through slots.
3. Set the unit or base on the mountings. The weight of the unit will cause the upper housing of the mount to
go down, possibly resting on the lower housing.
4. Turn nuts up on leveling bolts so that they will not interfere with the leveling procedure. Insert bolts through
the holes in the fan or isolation base and turn them into the tapped hole in the upper housing of the
mounting by hand as far as they will go.
5. With wrench, screw down one complete clockwise turn on the leveling bolt of each mounting. Repeat
this procedure until 1/4 inch clearance between upper and lower housing is obtained on one or more
mountings.
6. Take additional turns on all mountings having less that 1/4 inch clearance, until all mountings have at least
this clearance.
7. Level the fan by taking additional turns on all mounts at the low side. Clearance should not exceed
1/2 inch. Greater clearance indicates that mountings were not all installed at the same elevation and shims
are required.
8. Turn locking nut on leveling bolt down against fan or isolation base and lock in place with wrench to
complete adjustments.
Slot for Foundation Bolts
#468646 Isolation Base Assembly Instr
Rev. 2, September 2012
Copyright © 2012 Greenheck Fan Corp.
Equipment
Bracket
Acoustical Non-Skid
Elastomeric Pad
Locking Nut
Leveling Bolt