6
convenient location near the door. Those located
inside are wired in series with the electrical
interlocks and used as a safety measure to control
the primary power to the high voltage power
supplies from inside the duct. Those located outside
control the duct lights.
Grounding
An earth ground must be provided to the Model
60 cabinet and control. All ground connections
must be in contact with bare metal and securely
affixed. Ground conductor size and connection
means will be in accordance with all applicable
electrical code standards.
9. Check Out for System Start-up
When the installation has been completed, assure that
the equipment is ready for start-up by checking the
following:
A. Ensure all construction debris is removed from the
ionizing-collecting cells, drain basin and ductwork.
B. The drain line from the Trion drain basin is clear and
completely connected to its point of termination.
C. Supply line power is available and electrical wiring
is completed to the following components:
1. Controller
2. Electrical
Interlocks
3. Ionizing-Collecting
Cells
4. The System Fan
5. Duct Lights, Indicating Lights and Switches
SECTION III OPERATION & SERVICE
WARNING
RISK OF ELECTRIC SHOCK
These servicing instructions are for use by qualified
personnel only. To reduce the risk of electric shock,
do not perform any servicing other than that
contained in the operating instructions unless you
are qualified to do so.
FOR THE MAINTENANCE ENGINEER
1. Introduction and Principle of Operation
The Trion
electronic air cleaner is technically known
as an electrostatic precipitator. In this type of
equipment, all airborne particles, even of microscopic
size, are electrically charged (positively) as they pass
through a high voltage ionizer. These charged particles
are then attracted and adhere to a series of parallel
collecting plates, which form the negative elements of
an electrostatic field.
The ionizer consists of charged stainless steel spiked
blades spaced between grounded electrodes. The
collecting section consists of parallel plates arranged so
that each alternate plate is charged while the
intermediate plates are electrically grounded.
Periodically, depending on the type and concentration of
contamination in the air, the contaminate is washed
from the plates by manually cleaning the cells while in
place or removing them from the unit and then cleaning.
Two major functional components comprise the air
cleaner:
(1)
Ionizing-collecting cells to ionize and collect
airborne particulate matter.
(2) Power supply(s) to supply high voltage direct
current to the ionizing-collecting cells.
Normally, systems are designed for collection
efficiencies in the range of 90 percent or more.
Collecting a contaminant at these efficiencies,
especially when there are high concentrations can result
in large accumulations in a relatively short period.
Therefore, maintenance must encompass two areas;
the operation of the equipment for efficient collection
and the systematic removal of the collected
contaminant.
2. General
Description
The ionizing-collecting cells (contaminant collecting
elements) are housed in the cabinet on unistrut frames.
They can be removed from the unit as required, from
the backside (downstream airflow side). When installing
cells into the cabinet, observe the directional arrows on
the cell end plates. The side of the cell containing the
spiked ionizer blades always must be located on the air
entering side.
The Power Supply(s) convert the 115 volt, 60HZ, single
phase AC supply to the high voltage DC needed to
power the ionizing-collecting cells. Potential of 13 KVDC
are required for the ionizer sections and 6.5 KVDC for
the collector sections of the cells.
3. Initial
Start-up
A. Inspect the inside of the adjoining ductwork and
Trion cabinet to be sure it is clean and free of any
debris or construction materials. Especially note the
opening in the drain basin for any restrictions. The
ducting, where secured to the cabinet collars,
should be sealed water tight either with gasketing or
caulking.
B. Inspect the ionizing-collecting cells to see that all of
the ionizing blades or wires are intact, that no large
pieces of foreign material are lodged between the
plates, and that the cells are properly installed in the
cabinet with the spiked ionizing blades or wires
located on the air entering side.
C. Check the high voltage leads to see that they are
connected to the proper terminal both at the
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