6 -
carefully remove the old lamp from the lamp holder
clips.
Wear cotton gloves or use a cotton cloth when
handling the new lamp. Place the new lamp in the
holder clips of the UVC assembly. Verify that the
between the lamp holder clip and the sheet-metal
LAMP
FLANGE
4-PIN
CONNECTOR
HOLDER
CLIPS (2)
SHEET METAL
END STOP
DETAIL A
BANDS (see
Note below)
UVC
Sub-Assembly
LAMP
NOTE - The bands around the lamp should be evenly spaced
as shown in the diagram.
INSTALL LAMP IN HOLDER CLIPS
FIGURE 38
8 - Carefully place the UVC assembly on the blower
deck. Line up the mounting holes on the UVC
assembly with the mounting holes on the blower
provided to attach the UVC assembly in place.
9 - Close the blower access door.
Reconnect power to the rooftop unit.
11 -
view port in the triangular sheet-metal panel to
verify that the UVC light is on.
If UVC lamp does not come on:
1 - Check Power Wiring: Disconnect 1/4” QC (quick
connects) of the UVC cable near the UVC assembly.
the 1/4”QC quick connects from the control panel.
2 - Check Lamp: Carefully remove the UVC assembly
out of the rooftop unit. Use multimeter to test for
continuity across each pair of pins at each end of
the lamp.
3 - Check Lamp Installation: Make sure that lamp’s
pins snap properly into the lamp holder.
LED(s) not illuminated
Power status LED not lit—Check that the lamp unit is con-
nected to the proper power source and is wired correctly.
Lamp status LED(s) not lit—
1 - Check that lamp 4-pin connectors are properly
engaged.
2 - Ohm-check across the lamp pins to check for
Troubleshooting charts are provided to aid in determining
Lamp Disposal
Hg-LAMP Contains Mercury.—Manage in accordance
Proper Clean-up Technique in Case of Lamp Breakage
Do not use a vacuum cleaner. Do not incinerate.
Maintenance
• -
nician.
• Read the maintenance instructions before opening
unit panels.
• Unintended use of the unit or damage to the unit
housing may result in the escape of dangerous
• Do not operate units that are obviously damaged.
• Do not discard the triangular UVC light shield or any
barriers with an ultraviolet radiation symbol.
• Do not override the door interlock switch that inter-
rupts power to the UVC light.
• Do not operate the UVC light outside of the unit.
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