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INSTALLATION INSTRUCTIONS
INSTALLATION INSTRUCTIONS
ONLY FOR USE BY CERTIFIED,
LICENSED INSTALLERS
1. Offloading and Handling
Care must be taken when offloading; and unpacking
components. Care must be taken not to damage fiberglass
with forklift or any other offloading device. Check for
any damaged components that may have happened in
transportation and notify factory within 24 hours of delivery.
Prepare an excavation, having a diameter approximately
one foot larger than the tank and a depth that will allow
approximately 3 inches of the inspection port to extend
above normal ground level. Backfill with a 6-inch layer of
sand or gravel if otherwise unable to provide a smooth,
level, compact base. We recommend that the hole be roped
off in some fashion to prevent injury to passersby.
Component List (Example DF50)
1 – DF50 ATU
1 – DF50 Compressor Package
HP80 – air pump
GV12MIA – ½" galvanized male insert adapter
PV34X12FB – ¾" x ½" PVC slip x female bushing
54175K14 – 7/32" x 5/8" worm drive clamp
1 – CP20 alarm panel
8x6 polycarbonate enclosure
(5) wire terminals
(1) fuse holder w/5 amp fuse
(1) red pilot light (on outer door)
(1) two way silence switch (on outer door)
(1) alarm buzzer
(1) alarm pressure switch
(1) vent pipe assembly
2. Inlet and Outlet
Using lifting lugs provided, place the plant in the excavation
so that the inlet and outlet line up with the sewer piping.
The inlet line should slope down toward the plant and the
outlet line should slope down away from the plant. The plant
should be level within 1/2 inch, edge to edge.
Position inlet and outlet lines and make connections as
necessary, depending upon the construction materials. The
inlet line should be inserted and glued into the inlet elbow
and the discharge line should be inserted and glued into the
outlet coupling.
Note: Open inspection port and make sure discharge tee
assembly is level and centered in clarifier prior to attaching
discharge piping. Fill the tank with water until water flows
from the discharge before backfilling. Backfill around
the treatment plant up to the bottom of the discharge
connections.
3. Air Pump
Do not install the air pump(s) in a low-lying area where water
may accumulate. The air pump should be installed near the
control panel and within 100 ft. of the tank. The air pump
Delta Treatment Systems • 9125 Comar Drive, Walker, LA 70785 • 1-800-219-9183 • www.deltatreatment.com
can be installed outdoors or in a clean, well-ventilated area,
such as a tool room, garage, etc. If the linear air pump is to
be installed in an additional enclosure, the enclosure must
be approved by Delta Treatment Systems in writing.
4. Control Panel
A. Install the float switch wire from the control panel to the
treatment plant. Wire can be direct burial type UF 600 volt
or can be installed in Schedule 40 PVC conduit. Use type
THWN, 600 volt if installed in conduit. Wire must be buried
in accordance with NEC table 300-5. If in doubt, bury 24"
deep. Keep sufficient distance or depth from airline to avoid
confusion of pipes or damage to wiring during installation
or repair of air piping. Connect to the float switch normally
open contacts using underground rated compound filled
wire nuts.
To set the high level pressure switch that detects high water
level in the unit, follow the instructions below:
Bring plant to operating water level with compressor turned
on. Using properly sized screwdriver, turn high-level alarm
adjustment screw clockwise until alarm occurs. Then turn
the screw counterclockwise until alarm stops. (See "high
level pressure setting" drawing in this manual.)
B. Connect the pressure air tubing to the 1/8" barb-fitting
directly to the 3/4" airline or directly to the compressor.
Refer to illustrations in Appendix B for appropriate air tubing
connections.
C. Install 3/4" Schedule 40 PVC piping between air pump
and treatment unit. A minimum of 12" ground cover is
recommended.
9
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