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• Whenever a tank is pumped, do not remove
more than one-half of the capacity of the tank. It
is recommended that you pump the tank during
dry seasons only. However, if tank must be
pumped during the wet season, watch for
upward movement of the tank while pumping is
being done. If upward movement is detected
during pump,

immediately stop pumping

water out of the tank and refill the tank to
stop flotation.

Each site must be evaluated on

a case-by-case basis to determine the best time
to remove water from the tank and prevent
flotation.

1.3.5:

Replace the pre-treat, plant access, and

pump tank access cover (if included), being
sure to reinstall and tighten the

Hydro-Action

tamper-resistant screws to prevent plant entry
of unauthorized personnel.

Note

: Plant and

other tanks should be filled with water before
leaving site.

1.4:

Normal maintenance on the

Hydro-

Action

AP Series plant will include:

Every Six (6) Months:

a. Maintaining aeration system and air diffusers.
b. Maintaining air pump.
c. Removing scum from clarifier.
d. Inspecting and testing plant alarms.

Every Two (2) to Six (6) Years:

e. Pumping excess sludge from plant.

Note 1:

The owner has been informed that

replacement parts can be obtained from a

Hydro-Action

Certified Dealer.

Note 2:

Pumping the plant is usually necessary

every two (2) to six (6) years; however, there is
no set time because loadings vary from
household to household. Access to the plant is
accomplished through the access opening,
which is at surface grade. When a

Hydro-

Action

plant is being pumped, a qualified

service technician should oversee the job. The
waste from the plant must be disposed of in
compliance with all federal, state, and local
laws.

SECTION 2.0: Operating Instructions

2.1:

The

Hydro-Action

AP Series Plant has

been designed and built to provide efficient, and
reliable service. However, as with any individual
wastewater treatment plant, routine periodic
service is required. When proper preventive
maintenance is performed, the

Hydro-Action

plant will operate at designed performance
levels to give years of satisfactory treatment of
domestic wastewater.

2.2:

Local

Hydro-Action

Dealers are required

to perform all routine inspections for the first
two (2) years from the original date of
installation. At the time of inspection the plant
will be checked for proper operation. If a
problem exists, service will be performed at no
charge to the owner, unless the required
maintenance is not warranty related. At the end
of the two (2) year initial service period, the
local dealer will make available a continuing
service policy. This extended service is
available for a nominal fee.

2.3:

The

Hydro-Action

OPS

is equipped with

an alarm beacon and an audible horn alarm.
Also on the

OPS

should be the name, address,

and telephone number of the local servicing
dealer. An optional remote alarm with audible
and visual alarms may also be present. Should
either alarm come on, the owner is instructed to
call the local dealer. After a power failure, if an
alarm remains on for more than 30 minutes the
owner is instructed to call the local dealer
immediately. To silence audible alarm while
waiting for service technician to arrive, owner
should locate the switch on outside face of the

OPS

enclosure labeled “normal/silence” and

push it to the “silence” (right) position. Visual
alarm beacon will remain illuminated.

2.4:

The

Hydro-Action

AP-Series Plant will

handle all domestic wastewater. The term
domestic wastewater refers to rapidly
biodegradable material. To keep maintenance
at a minimum and to prevent the plant from
malfunctioning, the following guidelines need to
be followed: