INSTALLATION & MAINTENANCE INSTRUCTIONS - ORIGINAL VERSION
AVK CHANNEL PENSTOCKS
SERIES 772/71
Page 2/12
MI ChannelPenstock772 rev AB August 2014 GB
4. HANDLING AND STORAGE
Standard safety procedures should be followed to prevent personal injury or equipment damage. Additionally, the following
instructions shall be followed during handling and storage to prevent any damage to the product:
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Stems have precision surfaces and should never be used as a means to lift the penstock.
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Special care shall be taken on any machined surface when lifting the penstock.
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Equipment shall be stored in a dry, clean and even area on a raised even wood surface to prevent distortion of the frame.
Do not stack penstocks.
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Stems and extensions that are shipped separately shall be supported over their entire length to prevent any bending or
distortion while in storage.
5. INSTALLATION
5.1 Embedded in concrete
Required Materials:
As a standard, AVK channel penstocks are mounted embedded in concrete (EC). Field adjustment hex bolts are required to center
the penstock in the appropriate recess prior to embedding in concrete.
For detailed information about the type, size and quantity of the required bolts, or any other specific installation notes or materials,
please refer to the notes on the “General Arrangement Drawing”.
5.1.1 INSTALLATION PROCEDURE
Step 1: Concrete construction inspection
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The concrete construction shall be flat, level and plumb, and shall be in accordance with the ACI 117-06 standard.
If necessary, use non-shrink grout in order to meet the specified standard. The minimum concrete strength shall be 3,000 PSI
(20.7 MPa).
Step 2: Align the channel penstock in the wall recess
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Position and center the channel penstock in the recess of the wall, using the field adjustment bolts screwed in the “side
centering fittings” and “bottom levelling brackets” (see Figure 1).
Make sure that the channel penstock is centered in the channel.
NOTE: the smaller channel penstocks do not come with “bottom levelling brackets”.
If this is the case, follow Step 2B (page 6) prior to starting with “Step 2” in order to be able to align the penstock vertically.
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Align the penstock vertically adjusting the bolts on the “bottom levelling brackets” (see Figure 2).
Make sure that the frame invert is flush with the invert of the channel.
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Align the penstock horizontally adjusting the bolts on the “lateral centering fittings” (see Figure 3).
Make sure that the frame guide is flush with the channel side wall. Additionally, make sure that the penstock is perpendicular
to the side walls of the channel.
Step 3: Embed the channel penstock in the wall recess
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Pour the second phase of concrete. Take special care not to damage the seals.
