Atlantic PS3900 Manuale utente

Instruction

Manual

1-877-80-PONDS

www.atlanticwatergardens.com

Skimmer Part No. PS3900

FilterFalls Part No. BF1600

Pump Vault Part No. PV1700

FastFalls Part No. SP1600

Table of Contents

Product Overview Page 3

WATER GARDENS

Determining Pond Volume Page 4

Determining Surface Area Page 4

Streambed Construction Page 5

Placement of FilterFalls and Skimmer Page 5

SKIMMER INSTALLATION

Excavating and Setting the PS3900 Page 6

Attaching the Liner Page 6

Attaching the Weir Door Page 7

Plumbing the PS3900 Page 8

FILTERFALLS INSTALLATION

Bulkhead Installation Page 8

Setting the BF1600 Page 8

Liner Attachment Page 9

POND-FREE

Eco-Blox vs. Gravel Page 10

Streambed Volume Page 10

Basin Volume Page 10

PUMP VAULT INSTALLATION

Excavating and setting the PV1700 (Waterfall) Page 11

Plumbing the PV1700 (Waterfall) Page 11

Excavating and setting the PV1700 (Fountain) Page 12

Plumbing the PV1700 (Fountain) Page 12

FASTFALLS INSTALLATION

Setting the SP1600 Page 13

Liner and Plumbing Attachment Page 13

Hiding the SP1600 Page 14

SKIMMER / PUMP VAULT ACCESSORIES

Triton Check Valve Page 15

AF1000 AutoFill Kit Page 16

Skimmer Overﬂow Page 16

This manual contains basic construction techniques and installation

instructions for Atlantic Oasis Series Pond and Pond-Free products.

For more in-depth information regarding water feature construction,

techniques and maintenance, please visit:

www.atlanticwatergardens.com/university/awguniversity.html

Removable

top grate

Media bag

Bottom grate

Dual Bio-Tech

ﬁlter mats

Support bar

1½” heavy-duty bulkhead

Solid lip and

molded inserts

One-piece

liner attachment

ﬂange

FilterFalls

BF1600

Support bar

Matala®

ﬁlter mat

Stainless steel

framed debris

net

Cut-off step

ﬁttings for

1-1/2” or

2” pipe

Super Flow weir

door

High density

polyethylene

enclosure

Sturdy

removable lid

Skimmer

PS3900

Internal bafﬂes add

strength and diffuse

water ﬂow

Raised front radius

retains natural

camouﬂage

One-piece design

eliminates any leak

due to ‘over pumping’

Liner ﬂange and

molded inserts

ensure a secure

liner attachment

Installed 1 ½” FIPT

Spinweld®ﬁtting

High density

polyethylene

enclosure

Sturdy inset lid

Cut-off step

ﬁttings for 1 ½”

or 2” pipe

Recessed pockets

accept Triton

3-Way Diverter

Flat front panel

aids with Eco-Blox

installations

Pump Vault

PV1700

FastFalls

SP1600

back

POND VOLUME

It is important to calculate the estimated water volume before you begin construction,

and then re-calculate ﬁnal water volume when your project is completed. Estimating

water volume pre-construction is a step that is often skipped by many homeowners

and contractors. A water garden with undersized ﬁltration can prove to be a

maintenance nightmare.

TO DETERMINE POND VOLUME

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

cubic feet of pond volume. Multiply cubic feet x 7.48 = gallons

Water Gardens

LENGTH

WIDTH

DEPTH

SURFACE AREA

When using any pond skimmer it is important to keep the surface area (in square feet)

of the pond in mind. 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 pond and the water levels

equalize. During water in transition 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 could drop below the opening in the skimmer before the water

levels equalize. This would result in the pump running dry and starving for water.

This situation can be easily avoided by using the formula provided to calculate the surface

area of your pond. With that number, you can then determine the maximum surface area of

waterfalls and streambed that your pond can accomodate.

TO DETERMINE SURFACE FOOTAGE

Multiply (in feet) the average length x the average width = total square feet of the

pond surface area. Multiply the surface area of the pond x .5 = maximum surface

area for falls

10’

5’

3’3”

8’

Oasis Skimmer and FilterFalls can accomodate ﬂow rates up to 3900 GPH

and ﬁlter ponds up to 1500 gallons in volume.

Figure 1.

Figure 2.

50sq ft x .5 = 25sq ft stream surface area

10’ x 5’ = 50sq ft pond surface area

PLACEMENT OF THE FILTERFALLS AND SKIMMER

Now that you have determined the size of the pond, waterfalls and ﬁlter system, it is time

to determine the placement of the components.

Whenever possible, it is best to position the Skimmer and FilterFalls directly across from

each other at opposite ends of the pond. This setup creates a current that pulls surface

debris into the Skimmer. If the Skimmer and FilterFalls are placed too close together, or the

pond has an unusual shape, dead areas can occur. These dead areas can be eliminated with

the use of multiple falls or multiple skimmers.

STREAMBED CONSTRUCTION

Using proper streambed construction techniques can limit the transitional water needed

to ﬁll the streambed and enables the system to function optimally. Transitional water is

determined by the height that the weir rock extends above the liner at the spillway

opening. Maintaining the shortest distance possible between the top of the weir rock and

the liner is a crucial component to a properly functioning water garden. Figure 3 displays

two examples of proper construction techniques for minimal transitional water.

Figure 4 is an example of improper streambed construction. Stone, gravel and foam

can be combined to make a barrier and create a waterfall, but that barrier will never be

watertight. When the pump is turned off, the water will always drain down to the highest

point of the liner. Improper construction greatly increases the water in transition.

Figure 3.

Figure 4.

Top of liner

Top of water Transitional Water

Top of liner

Top of water Transitional Water

Top of liner

Top of water

Transitional

Water

WATER LEVEL

/4”

10” MIN

15”

Oasis Skimmer Installation

EXCAVATING AND SETTING THE PS3900

Prior to setting the skimmer you must ﬁrst determine the surface level of the water in

the pond. Once you have this number you can excavate for the Skimmer. The excavation

should be a few inches wider and longer than the Skimmer body. The depth of excavation

for the PS3900 should be 15” below water level. Do not dig too deep. The skimmer

should be set on stable, compacted soil. In the case that you over-dig, be sure to compact

the soil thoroughly to prevent settling. The bottom of the hole should be level side-to-

side and front-to-back (Figure 5).

Place the skimmer enclosure into the excavated hole. Check the top of the enclosure to

make sure that it is level front-to-back and side-to-side. Check where your pre-determined

water level falls on the face of the skimmer enclosure. Water level should be 1¼” below

the top of the weir door opening.

Make sure that any unexcavated soil that is left in front of the Skimmer is at least 10”

below water level. This will ensure that there is enough room for the weir door to be

installed and function properly.

Before you go any further into the Skimmer installation, it is a good idea to place a few

stones inside the Skimmer enclosure to weigh it down and keep it from moving.

Prior to backﬁlling the enclosure, make sure the support bar is installed inside the

skimmer. The support bar must be in place for the enclosure to retain its shape during the

backﬁlling process. Loosely backﬁll the enclosure on all sides, lightly compacting as you

go. Do not over-compact the soil! Aggressive compaction may deform the enclosure and

cause components to ﬁt improperly.

ATTACHING THE LINER

Hold the liner up against the face of the Skimmer, allowing a minimum of 2” to extend

above the top of the enclosure. Leave some excess slack in the liner below the weir

opening. This will help alleviate any future strain on the liner connection.

Make sure that the front surface of the Skimmer, and the back side of the liner, are clean

and free of debris. When you are satisﬁed with the position of the liner, clip it in place with

the provided spring clips. With a sharp razor knife, cut a hole in the liner for the weir door

using the hole in the face of the skimmer as a guide (Figure 6).

Figure 5.

ATTACHING THE WEIR DOOR

Unlatch the weir door and lower the door to its fully

open position. Insert the weir door assembly into the

Skimmer opening. With one hand push the bottom

of the weir door frame tight against the Skimmer

face. With the other hand gently push down on the

weir door latch until it clears the top of the opening.

Once it does, push the weir door assembly into the

Skimmer opening until the frame rests against the

face of the enclosure (Figure 7).

Line up the holes of the weir door frame with the

holes in the Skimmer face. Use a nail or awl to help

line up the holes and pierce the liner in the top

corners. Loosely fasten the top corners using two

of the supplied 1/4-20 machine screws and serrated

ﬂange nuts. Next, install two screws in the bottom

corners of the weir door frame (Figure 8).

Once you have the weir door tacked at the corners

you can install the rest of the screws. Do not fully

tighten any screws until all of the screws have been

installed.

When you are ﬁnished, remove the spring clips and pull the liner away from the face

of the skimmer. Apply a consistent bead of Atlantic ﬁsh-safe silicone to the face of the

Skimmer along the centerline of the pre-drilled bolt holes. Once you are ﬁnished, you can

return the liner to its original position and replace the spring clips.

Use your ﬁngers to hold the ﬂange nut and a hand held screwdriver to tighten

the screws. The serrations on the ﬂange nut will grab the plastic enclosure once it

makes contact, eliminating the need to use a wrench. Use caution when tightening

the screws. The screws need only be snug for the silicone to make a seal.

Figure 6.

Figure 7.

Figure 8.

PLUMBING THE PS3900

The PS3900 Skimmer has pump discharge

step ﬁttings molded into each side of the

skimmer enclosure. The step ﬁttings are

labeled for 1 ½” or 2” PVC pipe and have

cut lines molded in for each size (Figure 9).

Choose the step ﬁtting on the side of the

skimmer that will be best suited to exit based

on this installation. Using a PVC saw or

standard hack saw, remove the end of the

step ﬁtting (making sure to follow the molded

cut line) for the size pipe used for this water feature. Once completed, push one end of the

PVC supply line through the step ﬁtting allowing approximately 10” of pipe to enter the

skimmer enclosure.

It is recommended that you install a TR215CV Triton Check Valve between the pump and the

supply line. This valve will prevent the FilterFalls from draining when the pump is off, which

keeps the beneﬁcial bacteria alive and any debris that the FilterFalls has collected from back

ﬂowing into your pond. Refer to the Triton Check Valve installation instructions on page 15

for further details.

A drill point is provided on both sides of your Oasis Skimmer to show the proper location

for the installation of an AF1000 Auto Fill valve (not included). See the Auto Fill installation

instructions on page 16 for more information. There is a drill-point provided on the back of

Oasis Skimmer to show the proper location and elevation for the installation of an overﬂow

(not included). See the Overﬂow installation instructions on page 16 for more information.

SETTING THE BF1600

It is always recommended that the FilterFalls be placed on undisturbed soil if possible. If

the installation calls for the FilterFalls to be elevated above existing grade, it is critical to

compact the area thoroughly. This will ensure that the FilterFalls will not settle out-of-level

over time. The use of cinder blocks or bricks under the falls to raise it up will help reduce

the chance of settling.

The FilterFalls can be placed adjacent to the pond edge to create a single waterfall, or

pulled away from the pond to create a streambed effect. Refer to the surface area

recommendations on page 4 to ensure that the streambed is properly sized.

Oasis FilterFalls Installation

BULKHEAD INSTALLATION

It is a good idea to install the bulkhead ﬁtting and 1 ½” MTA (included) before setting

the BF1600. If 2” ﬂexible PVC is being used for the supply line, replacing the 1 ½” HA1550

bulkhead with an Atlantic 2” HA2000 bulkhead (not included) is recommended.

Remove the retaining nut and plastic friction washer, leaving the rubber gasket on the

body of the bulkhead ﬁtting. Note that the retaining nut is reverse threads. Turn clockwise

to loosen.

From the inside of the FilterFalls, insert the threaded end of the bulkhead into the hole on

the back of the enclosure. This will sandwich the rubber gasket between the ﬂange of the

bulkhead and the inside wall of the enclosure. Slip the friction washer over the threaded

end of the bulkhead on the outside of the enclosure and install the retaining nut. Tighten

the retaining nut by hand and then ﬁnish off with a half turn from a wrench. Note that the

retaining nut is reverse threads. Turn counterclockwise to tighten.

Figure 9.

LINER ATTACHMENT

Atlantic FilterFalls come equipped with a solid spillway, threaded inserts and a ‘U’ shaped

wrap-around ﬂange to provide the best possible seal.

Start by positioning the liner. Pull the liner up the face of the FilterFalls and drape a minimum

of 6” of liner over the top of the enclosure. Use the provided spring clips to temporarily hold

the liner in place (Figure 10). Leave some excess slack in the liner below the spillway. This will

help to alleviate any future strain on the liner connection. With the liner ﬁrmly in place, use a

sharp razor knife to cut the spillway opening in the liner using the inside of the spillway as a

guide (Figure 10).

Once you have placed the unit, make sure it is level from side to side and check the level

from front to back. FilterFalls should always be installed tilted slightly forward about ¼”.

This will ensure that water never leaks out over the back of the enclosure. When you are

ﬁnished positioning the unit, it is a good idea to weigh it down with a few rocks to keep it

in place while you backﬁll and make your liner and plumbing connections. Apply silicone on

the threads of the Male Thread Adaptor (MTA). Screw the MTA into the bulkhead until tight.

Use PVC Glue (not included) to glue the PVC ﬂex hose into the MTA.

Figure 10.

Figure 11.

Remove the spring clips and pull the liner away from the face of the enclosure. Make sure

that the front of the FilterFalls and the back side of the liner are clean and free of debris.

Apply a consistent bead of Atlantic ﬁsh-safe silicone to the face of the FilterFalls along the

center line of the threaded inserts.

Return the liner to the face of the FilterFalls and hold it in place by attaching the spring clips

to the rolled lip on either side of the spillway (Figure 11).

Do not completely backﬁll the FilterFalls until all of your plumbing connections

are made and the liner has been attached.

STREAMBED VOLUME

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

cubic feet of streambed volume

2” DEEP = 0.16’

3” DEEP = 0.25’

4” DEEP = 0.33’

BASIN VOLUME

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

Cubic feet ÷ 4.2 = the number of Eco-Blox

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

Cubic feet ÷19 = the number of tons of gravel

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.

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.

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.

POND-FREE

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)

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.

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