Atlantic PV1700 Gebrauchsanweisung - Seite 10

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1. Setting the Bf1600

Attach the liner flange to the FilterFalls, starting with the center screw first, and then work

out toward the sides of the spillway. It may be necessary to first pierce the liner with a nail

or an awl before inserting the screw. Do not fully tighten any screws until all the screws have

been installed. Once completed, trim away any excess liner as needed.

Tighten flange screws with a hand held screwdriver only. Over tightening the screws

could strip out the inserts or crack the liner flange. The screws need only to be snug

for the silicone to make a seal.

POND-FREE

Pond–free features exchange the open water of the pond for a gravel-topped excavation,

maximizing visual impact while minimizing headaches and maintenance. Typically, a pump

placed in a protective vault inside a lined reservoir continuously recirculates water over a

stream or waterfall. A bed of gravel hides the basin, vault and plumbing from view, leaving

only the stream and waterfall visible.

ECO-BLOX vs. GRAVEL BASIN for a WATERFALL or STREAM

Eco-Blox basins consist of 10% Eco-Blox and 90% water. Gravel basins consist of 70% rock

and only 30% water. As a rule of thumb, your pond-free basin should hold three times

the amount of water as the waterfalls and streambeds above it. It is critical to calculate

the water volume that the basin can hold before you begin construction of the waterfalls

or streambed.

Why should the basin be three times the size of the stream? Upon start-up, the pump

sends water from the bottom reservoir to the top of the waterfall and/or streambed. The

water must then fill, from top to bottom, the waterfalls and streambed until it eventually

re-enters the basin and the water levels equalize. During this filling process, the water level

of the bottom reservoir is continually dropping.

If the streambed is built improperly, or is built too big, the water level of the bottom

reservoir may drop below the top of the pump before the water levels equalize. This would

result in the top of the pump being exposed to air. Pumps must be completely submersed

in water or they can overheat causing damage to the pump. Refer to the streambed

construction section on page 5 for more detail.

STREAMBED VOLUME

Multiply (in feet) the average length x the average width x the average depth to find

cubic feet of streambed volume

Don't forget that the thickness of your rocks will add extra depth to the water.

(e.g. if you have rocks 1" deep covering the bottom of your stream, be sure to

incorporate that 1" into your total depth)

BASIN VOLUME

For Eco-Blox: Multiply the cubic feet of the streambed x 3 = cubic feet needed for the basin

For Gravel: Multiply the cubic feet of the streambed x 9 = cubic feet needed for the basin

2" DEEP = 0.16'

3" DEEP = 0.25'

4" DEEP = 0.33'

Cubic feet ÷ 4.2 = the number of Eco-Blox

Cubic feet ÷19 = the number of tons of gravel