GAYLORD Ultima Vent GX2-UV Technical Manual page 17

Danger!
These items will need to be performed by a trained, qualified
and Certified Service Agency (CSA). These tasks involve
potential exposure to UV light and live electrical components.
SYMPTOM
1. After CUV-100 is turned on, fan starts:
* Yellow "UV Lamp Failure" light is on
* Audible Alarm is on
2. * Yellow "UV Lamp Failure" light is on
* Green "UV System On" light is on
* Audible Alarm is on
3. Yellow "UV Lamp Failure" light is on
ONLY at CUV-100 control NOT on any of
the ventilator sections.
TROUBLESHOOTING UV SYSTEM
There is risk of injury to skin and eyes and in the case of
electrical shock, injury or death! For a list of CSA's Go to
www.gaylordusa.com and go to Service for a list of compa-
nies nearest you.
POSSIBLE PROBLEM
A. No power to the ventilator section(s).
B. Loose wire between CUV-100 and
ventilator.
C. No start signal from CUV-100 to ventilator
section(s).
D. Fuse is blown on UV Controller in ventilator.
E. The contactor has failed (CR20).
F. Green "UV System On" light has failed.
A. UV Lamp or UV Ballast has failed.
B. The contacts on the UV Controller have
closed permanently.
C. Relay CR22 in ventilator has failed.
D. Relay CR12 in CUV-100 has failed.
A. Yellow "UV Lamp Failure" light on ventilator
has failed.
17
CORRECTIVE ACTION
1. Check for 120 Volts on between L1 & L2 at
ventilator. If there is no power at L1 and L2
coming to this ventilator section identify the
circuit breaker, correct and re-check.
1. Check for 120 Volts between 6U and 5U in
the ventilator. If none check CR13 in the
CUV-100 for power and operation. If there
is power there check for 120 volts between
1U and 5U. If there is power, check the
green lamps for proper operation.
1. Check Fuse F7 in CUV-100.
1. Check Fuse F2 on the UV Controller.
1. If there is power to L1 and L2. Check for
power to the contactor coil (CR20). Correct
lack of power.
1. Check for power to the Green "UV System
On" light
a. If no power, Check the circuit and
locate problem.
b. If there is power the Green "UV
System On" light has failed and needs
to be replaced.
1. Identify ventilator section with Yellow "UV
Lamp Failure" light on.
2. With fan running, Open UV Access door
3. Depress the UV Access door switch and
identify which Lamp/Ballast's green light is
not on
4. Switch the pin connector on that Ballast with
another Ballast and check again
a. If the alternate Ballast's green light
comes on, replace the Ballast
b. If the alternate Ballast's green light
does not come on, replace the Lamp
1. Check for continuity between 2A and 3A in
ventilator. If there is continuity AND all of
the UV lamps are working, (6) green and
(3) red lights on at the UV Controller, the UV
Controller needs to be replaced.
1. With Exhaust fan on, check for continuity
across the N.O. contacts of CR22 in the
ventilator. If there is continuity AND all of
the UV lamps are working, replace relay
CR22.
1. Check CR12 for proper operation, replace if
necessary.
1. Check the Yellow "UV Lamp Failure" light
and see if it is receiving power.
a. If no, the problem is in the wiring.
Locate and correct the problem
b. If yes, replace the lamp.