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Section III. Maintenance and Media Pad Replacement
Replacement Media Pads are available from your heating and air conditioning contractor.
WARNING: WHENEVER INSTALLING OR REMOVING THE AIR CLEANER, THE
POWER TO THE HEATING AND COOLING SYSTEM MUST BE TURNED OFF. CARE
SHOULD BE TAKEN NOT TO LET THE JACK TOUCH ANY GROUNDED OR METAL
SURFACES. ALTHOUGH THE JACK IS SHIELDED, IT IS POSSIBLE FOR THE
CENTRAL POWER INSERT TO CONTACT GROUND WHICH COULD RESULT IN
DAMAGE TO THE TRANSFORMER OR ELECTRONICS.
1) Turn the thermostat fan switch to the “OFF” position.
2) Turn off power to the heating and cooling system.
3) Open the filter access door or grille.
4) Unplug the power supply cord from the air cleaner
powerhead.
5) Remove the air cleaner from the filter rack or return
air grille.
6) Open the air cleaner (fig 3), remove the old media
pads and discard.
7) If dust has accumulated on the outer screen of the air
cleaner, clean with a dry brush or vacuum.
8) Position the new replacement media pads so that they
are centered within the air cleaner frames. The media
pads operate with airflow in either direction.
9) Close and re-latch the air cleaner.
10) Return the air cleaner to its location in the heating
and cooling system or return air grille.
11) Plug the power supply cord into the air cleaner once it
is securely in place (fig 4).
Figure 3
12) Close the filter access door or grille.
13) Switch the thermostat back to the “ON” position. For
optimum results, the heating and cooling system
should be run continuously with the fan switch in the
“ON” position, rather than the “AUTO” position.
14) Because of variations in humidity and temperature,
the new media pads may make a slight snapping
sound when first installed. This is normal and should
stop within 24 hours of operation.
Figure 4
NOTE: Media pads should generally last 3 to 6 months, depending on conditions within the
space. In a new installation, however, it is suggested that the media pad be inspected and/or
replaced after one month of operation due to the initial cleanup of contaminants. Always change
the front (upstream) media pad and inspect the back (downstream) media pad. It may be
sufficient to move the back media pad to the front and only replace the back media pad with a
new media pad.
WARNING:
FAILURE TO CHANGE THE MEDIA PAD ON A REGULAR BASIS COULD REDUCE
AIRFLOW AND CAUSE DAMAGE TO THE HEATING AND COOLING SYSTEM.
