Clarus Environmental Standard Riser Systems User Manual
Standard riser system installation instructions
SECTION: C5.20.130
CL0105
0512
Supersedes
New
3649 Cane Run Road . Louisville, KY 40211-1961
877-244-9340 . Fax: 877-414-4316
www.clarusenvironmental.com
Standard Riser System
INSTALLATION INSTRUCTIONS
NOTICE TO INSTallEr: Instructions must remain with installation.
© Copyright 2012. All rights reserved.
1. Unpack risers and accessories and examine for any damage that may have occurred during shipping.
2. You may adjust the height on all risers by cutting the top of the riser between any two ribs. The bottom of the riser must remain flat
to ensure maximum surface area for adhesive.
3. All covers require a Robertson square head driver for removal.
SK2294B
FIG. 1
Bolt Down Kit (See FIG. 1):
1. Clean and dry the mounting surface on both the riser and
the septic tank. Wash the top of the tank with detergent
and water. Clean the riser's flat bottom flange with PVC
cleaner or lacquer thinner to provide the best seal.
2. Apply a ½” bead of sealant to the riser's flat bottom flange.
3. Carefully align the riser over the hole in the tank and place
the riser down on tank.
4. Drill four 3/8” holes 90 degrees apart. Locate the holes as
close as possible to the riser (1/4” max.). Drill the holes
at a slight angle to ensure getting as close as possible to
the riser. Drill the hole deep enough to allow 1” of stud to
be above the concrete. Example: if the stud is 2-3/8” long,
drill the hole 1-3/8” deep.
5. Place the large fender washer on first, then the standard
washer, followed by the nut, and tighten.
Seal Ring (See FIG. 2):
1. Clean and dry the mounting surface on both the riser
ring and the septic tank. Wash the top of the tank with
detergent and water. Clean the seal ring and riser with
PVC cleaner or lacquer thinner to provide the best seal.
2. Position the seal ring on the septic tank, lining up the hole
in the top of the tank with the hole in the mounting flange.
Draw a line around the outside of the ring on the tank.
3. Remove the ring and apply foam in the area where the
ring will be set. Apply a 2” bead of foam on the tank or two
1” beads, depending on how much area you have to set
the ring.
4. Position the seal ring back on the tank and apply moderate
to firm pressure.
5. Apply a 2” bead of foam at the base of the ring where the
riser will sit.
6. Set the riser on the seal ring. Note: On short sections of
riser, reach inside the riser and fill any voids between the
riser and the seal ring. On long sections of riser, apply a
second bead of foam to the inside vertical section of the
seal ring before installing the riser. This will ensure there
are no voids between the seal ring and the riser.
7. Wait a minimum of one hour and backfill. Be careful not to
damage the riser.
FIG. 2
SK2294C
Does not apply to 18" dia. riser.