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SECTION 1.0: Plant Routine Inspection
and Service Instructions

1.1:

Each site should be inspected and serviced

by following these simple instructions. As each
site may have differences due to selected
disposal options, inspect each site facility to
determine which options are present then
proceed with the following instructions.

1.1.1:

Upon arrival at the site, remove the

tamper-resistant screws from the

Hydro-

Action

plant access cover and the

Platform Mounted

OPS

or Remotely Located

OPS

enclosure. Then remove the access cover

and enclosure. Set the security screws and
covers in a protected place for later
reassembly.

1.1.2:

Collect an activated sludge sample from

the aeration compartment. The sample size
should be approximately one quart. Collect the
sample as soon as possible; you can perform
other work while the solids are settling and
thereby reduce your inspection time at the site.
Use this sample to run the sludge volume test
(15 minutes settable solids ml/L test). To
perform this test a one-liter graduated cylinder
or any tall, straight-sided, clear glass container,
about one-quart in capacity, will be needed.
Divide the container into 10 equal parts using a
waterproof marker, thus signifying 0 to 100%.

a. Immediately after sample is collected, fill
graduated container to 100% mark.

b. Allow sample to stand for 15 minutes.

c. Measure sludge volume by locating interface
between clarified effluent and settled sludge on
graduations. Interface should be between the
20% and 60% marks, indicating a well-
functioning plant. Values less than 20% or
greater than 60% indicate there is a problem.
Sludge layer should be chocolate in color and
full of very small particles resembling small
pieces of sponge. Refer to the

Hydro-Action

Plant Condition Chart, section 4.12.

1.1.3:

As turbulence in the aeration

compartment caused by the rising fine air
bubbles can be seen, observe any significant
changes in mixing and aeration characteristics.

If insufficient mixing or poor aeration is
observed, refer to Section 1.1.4a. All Diffuser
assemblies should appear to have equal
turbulence. This is an indication of proper
diffuser assembly and diffuser operation.

1.1.4:

Proper aeration in the

Hydro-Action

AP-Series is maintained by performing the
following maintenance operations:

a. Clean or replace the air pump inlet filter
during routine inspections; inspect the aeration
compartment surface through the access port to
determine the amount of turbulence caused by
air coming from each diffuser assembly. All
Diffuser assemblies should appear to have
equal turbulence. This is an indication of proper
diffuser assembly and diffuser operation.

b. Locate the Schrader air pressure valve on
the PVC air pump discharge line. Unscrew the
protective cap and connect the quick chuck
pressure gauge. Read and record the pressure.
If the pressure equals or exceeds 3.5 psig, a
high pressure condition exists. After pressure
reading is complete, remove the quick-chuck
pressure gauge and replace the protective cap
on the Schrader air pressure valve.

1.1.5:

To inspect, clean, or replace air diffuser

assemblies, refer to Section 3.0.

1.1.6:

Using a clean, clear sample bottle catch

an effluent sample from the pump tank or other
discharge point. Effluent should have a non-
offensive odor and be clear in color. If results
differ from these refer to section 4.0, Plant
Troubleshooting Guide.

1.1.7:

Check the surface of the clarification

compartment for floating solid or scum buildup.
If build-up is found, remove it using a small net
with very fine mesh and dispose of off-site
according to all federal, state, and local
regulations. (Material may be returned to
system upstream of plant through cleanout.)
Using a garden hose, spray a high-pressure
stream of water into clarifier, breaking up any
remaining floating solids. Clean any over spray
from the general area.