______________________________________________________Chapter 5 - Troubleshooting, Page 5-9
UV System - Cont.
Symptom
Probable Cause
Corrective Action
2 After exhaust fan is
started and the UV
Status lights on the
Ventilator section(s)
illuminate as follows:
1.
Green
light is
On.
2.
Yellow
light is
On.
3.
Blue
light is
Off.
A. One or more UV Lamps has
failed.
1 Refer to Page 6-8 for
instructions on determining
which Lamp has failed, and
replacement.
B. UV Ballast has failed.
1 Refer to page 6-19 for
instructions on determining
which Ballast has failed and
replacing.
C. Loose wires.
1 Check wires 1A and 3A from the
Command Center to the UV
Ballast. If either are loose, re-
secure and tighten.
3 After exhaust fan is
started and the UV
Status lights on the
Ventilator section(s)
illuminate as follows:
1.
Green
light is
Off.
2.
Yellow
light is
On
.
3.
Blue
light is
Off.
A. No electrical power to the UV
Ballast.
1 Check for electrical power on
terminals L1 and L2 on the UV
Ventilation Control Board.
Refer to the wiring diagrams in
Chapter 7.
2 Check the Circuit Breaker.
B. Lamp / Ballast Connector plug is
unplugged.
1 Plug in connector. Refer to
figure 6-9-1 and 6-9-2.
C. Loose wire at the Command
Center or on the Ventilation
Control Board.
1 Check terminal 1U from UV
Ballast back to the Command
Center.
D. Green status light miss-wired or
failed.
1 Confirm light is getting power
and/or replace lamp(s) as
necessary. Refer to wiring
diagrams in Chapter 7.
4 After the exhaust fan
is started the UV
Status Lights on the
Ventilator sections do
not illuminate.
A. No power on terminal 6U in the
Command Center.
1 Check and replace the 4 amp
fuse located in the Command
Center. Confirm 6U is not
shorted and the reason the fuse
is blown. If 6U is shorted at
some point, find the pinch or
short and repair as needed.
B. Loose wire.
1 Check for voltage on 5U and
6U. Re-secure any loose
connections between the
Ventilator and the Command
Center.
Table T-5-9-1
