Chapter 5 - Troubleshooting, Page 5-8______________________________________________________
UV System
Symptom
Probable Cause
Corrective Action
1 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
Off.
3.
Blue
light is
On.
A. Extractor Inspection Door open.
1 Close door.
B. UV Module Access Door open.
1 Close door.
C. UV Module Access Door Safety
Switch has failed.
1 Test for electrical continuity of
the switch. Replace if needed.
D. Extractor Inspection Door
Proximity Safety Switch has failed.
1 Test for electrical continuity of
the switch. Replace if needed.
E. ESP Cell Access Door open.
1 Close door.
F. Plunger Safety Switch has
mechanical failure or the micro
switch on the Plunger Safety
Switch has failed.
1 Refer to “Testing Plunger
Safety Switch” on Page 6-52
for instructions.
E. Airflow is too low.
1 Confirm Ventilator is at design
exhaust volume. Refer to
instructions beginning on page
6-1 for measuring exhaust
volume.
F. The temperature of the Main
Electrical Raceway has exceeded
118° F. and the High Temperature
Shutdown Controller has
activated.
1 Confirm that Ventilation Fan
mounted in the Electrical
Compartment of the
Ventilator has not failed. If
failed, refer to page 6-30 for
instructions on replacing.
2 Check to see that the
Ventilation Fan inlet and
outlet Ventilation Snorkel on
the top of the Ventilator is not
blocked by building insulation
or any other material.
Remove the material that is
blocking the air inlet.
3 The cooking equipment under
the Ventilator is in a
"runaway" condition operating
too hot. Check with owner to
see if cooking equipment is
operating properly.
Table T-5-8-1
