Bluezone Model 420, Installation, Operation And Service Manual

Page: 17 / 31

Document #: BZ420-045
16
Instructions for Bulb Replacement:
1) Toggle the power switch located on
the unit’s control panel to OFF.
2) Wait 15 minutes for the ozone to
clear from the Bluezone reaction
zone.
3) WARNING : Before proceeding
to next
step, unplug the unit from it’s
power supply.
4) Use the 5/16 socket to unscrew the
14 screws on the cover, see Figure 6
below.
5) Slowly, remove the cover and place it
on a flat surface.
6) Use the gloves provided to remove
and replace the bulbs. This will
prevent oil on your hand from
damaging the new bulbs.
7) Unscrew the 5/16 screws on Bulb
Support Wires. See Figure 7 below.
8) Carefully remove Bulb Support Wires
and place aside. See Figure 8 below.
9) Unscrew 5/16 screws on Bulb Clips.
See Figure 9 below.
10) Remove the old bulbs (Note: pull on
them at the ceramic base, not on the
glass) Put the bulbs to the side for
disposal.
11) Carefully remove Bulb Clips and
place aside. See Figure 10 below.
12) Hold replacement bulbs by the
ceramic end and push the pins into
the slots in the receptacle.

They need to be pushed in
until a
“click” is heard and
felt.
13) Put Bulb Clips over new bulbs and
use screws to tighten Bulb Clips in
place.
14) Thread Bulb Support Wires through
bulbs and use screws to tighten Bulb
Support Wires in place.
15) Tighten cover back onto the unit.
16) Dispose of used bulbs, according to
standard practice for florescent bulbs.
IMPORTANT
17) Press and hold the red bulb counter
reset button for 5 seconds. The display
screen will read “Hold: reset counter”
during the 5 second hold. See Figure 12
18) After holding for 5 seconds, press the
bulb counter reset button again to
finalize reset. The display screen will
read “push to confirm” after the 5
second hold.
Estimated total bulb replacement time:
approximately 30 minutes per unit.