IM-995
Installation, Operation & Maintenance Manual
10
Fan Installation – Disassembled Units With Split Housings
(refer to lifting/safety section)
A unit is considered “disassembled” if any component required for proper operation is shipped or supplied separately or in pieces.
Reference earlier instructions concerning proper handling of fan components and general safety. Impeller rotation is important.
Rotation is viewed from the drive side unless otherwise noted on the drawing.
All units where assembly of the fan housing or bearing pedestal or drive stand is required will have tags or matchmarks on adjacent
parts. These are used to identify which components are joined together. Units that require extensive assembly may require additional
instructions located in other sections of this manual. Special instructions for some components and accessories are sent with the
shipment.
1.
Move the lower half of the housing to its mounting location.
2. Remove skids, crates and packing materials carefully.
3. If vibration isolation is to be used, place the vibration isolation base on mounting bolts. Line up holes in fan base with bolts. See
Item 10 in the "Optional Accessories" section for preparing inertia bases for use.
4. Place the lower housing on the mounting structure. Carefully level the lower housing on the foundation and shim as necessary
using stainless steel shims on both sides of each anchor bolt.
IMPORTANT: Back off leveling nuts if used.
5.
If the bearing pedestal(s) are separated they should be installed next.
a. Move bearing pedestal(s) to mounting location.
b. Set pedestal(s) on bolt(s).
c. Do not distort bearing pedestal by forcing it to align with a non-level foundation. (The concrete foundation should be properly
dressed.) Place shims on either side of the foundation studs and back off leveling nuts.
d. Check the bearing centerline height. Adjust the height to match centerline height of the housing. High temperature units may
require a lower housing centerline/inlet when cold so that it will be centered when hot.
e. Bring the bearing pedestal into square with the housing using careful measurements or a large square.
f. Shim and bolt the pedestal into position.
Pie Split
Housing
3-Way Split
Housing
Horizontal Split
Housing
