6
Maintenance
METAL INSERT & LAMP REPLACEMENT
Replace metal insert and lamps* every 24 months.
Replace insert more frequently if you notice a sig-
nificant drop in odor removal efficiency.
If you find that you need to replace the insert more
frequently than every 24 months, consider source
reduction and/or ventilation to reduce the levels of
contaminants in your home (see Homeowners IAQ
Guide for additional recommendations).
* Lamps will continue to glow at the end of the 24
months. However, their output efficiency will have
degraded to the point that they must be replaced to
assure effective performance of your PureAir™ unit.
1. Unplug the power cord and remove the access
door.
2. Slide out PCO-12C/20C assembly.
3. Remove metal insert.
4. Twist/rotate each lamp approximately 1/4 turn to
remove from sockets.
5. Install new lamps making sure to snap them
completely into the sockets and twist/rotate
lamp approximately 1/4 turn. Use gloves or cloth
to avoid fingerprints on lamps. (See page 3.)
MERV 9 PLEATED FILTER
The pleated filter should be replaced every 12
months. More frequent filter changes may be
required in situations with high dust or dirt loads.
1. Unplug the power cord and remove the access
door.
2. Partially slide out the PCO-12C/20C assembly.
3. Remove the pleated filter and replace with the
same MERV 9 filter. (Performance of PCO-
12C/20C will be dramatically affected if improper
filter is installed.)
4. Slide assembly back into cabinet and install access
door.
5. Reconnect power cord.
6. Verify that the lamps are illuminated.
METAL INSERT/LAMP REPLACEMENT(Cont'd)
6. Install new metal insert.
7. Slide assembly back into cabinet and install
access door.
8. Reconnect power cord.
9. Verify that the lamps are illuminated.
Note:
DO NOT WASH metal insert. Washing will
destroy the titanium dioxide catalyst that coats the
insert surface.
Note:
If the system has been operated for a period
of time without the lamp(s) being illuminated (such
as at startup or with a failed lamp), an odor may
occur when lamps are (re)started. This symptom is
considered to be typical and should only be tem-
porary. In the event that an odor does occur, it
should subside and dissipate within 12 hours of
full operation. If this odor persists longer than 48
hours, you should unplug the PCO and contact
your Lennox authorized dealer.
Ultraviolet (UV-A) radiation risk.
Prolonged exposure may cause skin or eye damage.
Avoid prolonged (weeks) exposure to skin or eyes.
CAUTION
Clean lamps prior to installation using a cotton
cloth to remove dirt and fingerprints.
Failure to clean lamps could reduce the system's
efficiency.
NOTICE
Lamps contain Mercury.
Ingestion or contact with mercury or mercury vapor
is hazardous to your health.
Take care when handling lamps. If lamp breaks,
avoid contact with mercury.
CAUTION
The PCO-12C/20C has three components that will
require maintenance: MERV 9 pleated filter, metal
insert, and UVA lamps.(For replacement part num-
bers refer to Replacement Parts section in these
instructions. PCO-12C/20C performance will be
dramatically reduced if the required maintenance
is not performed on these three components.)
