GEEP424I

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Consumer & Industrial

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GEEP-424I

Instruction

These Instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connectionwith installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered

sufficiently for the purchasers purposes, the matter should be referred to GE Industrial Control Systems.

Custom 8000

is a registered trademark of General Electric Company.

.

GE Consumer & Industrial Copyright 2008 The General Electric Company

Instruction Manual Installationof Soleplates

Horizontal Motors & Generators

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GEEP-424I Installation of Soleplates Horizontal motor

Levelling

In each soleplate there are normally three tapped holes. See figures 1 and 2 below. Long cap

screws can be used as jacking screws through these holes to level the soleplates.

As outlined in the Installation Instructions, a proper machine foundation should be at a levelwhich will allow the bottom of the soleplates (or base) to set at a nominal value of 2 inches (51mm)

above the foundation. This space is for grout. Check this actual value on the civil engineering

drawings for this project (supplied by others). Set the soleplates in their proper axial and transverse

positions and elevate them via the jacking screws to the correct value.

Figure 1- Typical Bracket Bearing Motor Soleplate

Figure 2- Typical Pedestal Bearing Motor Soleplate

Insert shims or plates on both sides of each anchor bolt between the soleplates and thefoundation. Ensure that the shims maintain the soleplate level obtained by the jacking screws.

Back up the jacking screws so that they are clear of the foundation but still fill the tapped holes

to prevent grout from fouling the threads.

Before grouting, tighten the anchor bolt nuts in their countersunk holes. Confirm that the

soleplates are still level in both the axial and transverse direction within 0.001 inch per foot (0.083

mm per meter).

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Grouting

Use a commercial grade of non-shrinking grout, otherwise use a mixture od 1.5 or 2 parts of

sand to 1 part of cement by volume.

Ensure that all heavy scale, rust, oil or paint has been removed from the bolts and soleplates.

Protect all tapped holes to prevent grout from entering the threads.Set up forms (dam) as shown in the figure 3 below so that grout can be worked under and

around the soleplates. Clean and moisten the foundation. When grouting, ensure that there are no air

pockets.

Ensure that the soleplates are resting evenly on all shims and that they are leveled with a good

quality optical level.

After the grout has set, if any looseness if noted in the soleplates, the soleplates must be

completely re-grouted.

After the grout has fully hardened (usually in a week to 10 days), tighten all foundation bolts to

specifications.

Pliable material fill

Figure 300-4

Anchor Bolt Sleeves

Anchor bolt sleeves, filled with a pliable material, not grout, serve three purposes:

1- They allow a long section of the anchor bolt to be stretched elastically, creating a springeffect that greatly helps the bolt maintain its preload. This not only helps the bolts stay tight,

it also guards against fatigue failure.

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2- They permit the bolt to absorb horizontal forces by bending. This bending load is much lesslikely to cause a bolt to fail than the shear forces it would be subjected to if was grouted

solidly.

3- They allow the anchor bolts to be flexed sideways if necessary to line up with the holes inthe mounting plate.

It is important to note that the sleeves must be filled with a pliable material, not grout, because

there is a fair amount of confusion about filling sleeves, filling them with grout or concrete woulddefeat the three purposes listed above.

The reason for filling them with a pliable material as opposed to leaving them unfilled is that in

freezing climates there is the risk of the sleeves filling with water, freezing and expanding, and

crating the foundation. Even in nonfreezing climates it is desirable to fill them to preventaccumulation of flammable, corrosive, or other unwanted materials. Some examples of pliable

materials in common use are silicon rubber, duct seal, asphalt, and oakum packing.

When grout is poured, special measures must be taken to prevent grout from entering the sleeve or

forming around the anchor bolt. A typical anchor bolt and sleeve are shown in figure 300-6.

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