NATURALFLOW SERIES NF1500
System Specification & Installation Instructions
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Appendix A and B
Appendix A
High Water Table: For installation in high water table areas, make sure you have a pump to pump away ground
water whilst installing. Excavate a pump cavity to one side of the platform and pump ground water away during
entire installation process .Half fill dose tank with water, this will flow back into Wormorator as well and will
help with resisting the hydraulic uplift (ensure that Wormorator is not completely flooded). Either lay 2-3m
3
of
concrete around the base of the tanks or mix 3 bags of cement/cube of GAP20 (or similar) metal to form a mass
to stop any hydraulic uplift. Leave water in tanks for at least 12 hours after installation is completed and then
pump out to allow Wormorator to dry out.
Appendix B
Instructions for fitting UNISEAL®
1.
Cut hole to the Hole saw size indicated for the UNISEAL® you are using. Either 127mm hole for a
4”/100mm pipe or 67.2mm hole for a 2”/50mm pipe.
2.
Ensure that the hole is clean cut with sharp edges. Irregularities could cause poor seating and
ultimate leakage.
3.
Insert the UNISEAL® into the hole with the wide side facing the pipe to be inserted.
4.
Make certain that the pipe end to be inserted is clean cut. File the edges so that there are no sharp
points to cut UNISEAL®.
5.
Using Detergent, lubricate the outside of the pipe end to be inserted, then push the pipe through the
UNISEAL® from the large flange side. The detergent will be squeezed off as the pipe passes through the
UNISEAL®. The co-efficient of friction of the rubber holds the pipe tightly in place.
Outside
Pipe
Inside
Side Elevation:
