GAYLORD XG-BDL, Installation Operation & Maintenance

6

UV PREVENTATIVE MAINTENANCE

These  items  will  need  to  be  performed  by  a  trained  and  qualified 

Certified Service Agency (CSA) on the same schedule as the exhaust 

system inspection schedule described in NFPA-96 and on the previous 

page in this tech manual. These tasks involve potential exposure to 

high doses of UV light and live electrical components. There is risk 

of injury to skin and eyes and in the case of electrical shock, injury or 

death! For a list of CSAs go to www.gaylordventilation.com and go to 

“Service Agencies” for a list of companies nearest you.

1.    Inspection of the Lamps and Ballasts

Check the lamps for proper operation

1.  Turn on the fan and look for the green “UV System  

On” light on each hood section 

a.  If it is not on refer to “UV Troubleshooting”,  

     pages 16 - 19.

2.    Open the UV Access door with the key

3.    Turn on fan

4.    Verify all of the XG Extractors are installed.

5.    Depress the UV Access door safety switch

6.    Check all indicator LEDs, 6 green and 3 red, to                         

ensure that they are all on. If they are not all on go to 

“UV Troubleshooting”, pages 16 - 19.

2.  Inspect the Plenum (around the UV lamps) 

a.  Disconnect the UV module power cord

  b.  Remove the nuts holding the UV module to the ventilator 

with a nut driver

c.  Remove the UV module from the ventilator

d.  Check for build-up of grease deposits.

e.  Clean as necessary with a mild detergent, water and a 

rag

f. 

Reinstall the UV module.

3.  Test the Safety Interlock switches

a.    Remove one “XG” Extractor with the fan on

• The UV lamps should shut off

• An audible alarm on the CUV-100 should come on

• The Red “UV Safety Interlock Activated” light on the 

ventilator and CUV-100 control should come on

b.    Open the UV Access door with the fan on

• The UV lamps should shut off

• An audible alarm on the CUV-100 should come on

• The Red “UV Safety Interlock Activated” light on the 

ventilator and CUV-100 control should come on

c.    To test Pressure Switch turn off the breaker to the        

Exhaust Fan.  Press the  “Start Fan” button on the CUV-

100 control

• After a 1 minute delay, the UV lamps should shut off 

(stay off)

• An audible alarm on the CUV-100 should come on

• The Red “UV Safety Interlock Activated” light on the 

ventilator and CUV-100 control should come on

4.  Check all gaskets for damage

a.  Replace any gaskets that are worn or damaged only with 

factory provided replacements.

5.  Check the Hour Meter

a.  Record the hours

  b.  Determine the approximate hours between inspection 

intervals.

c.  Determine when the 8000-hour life of the lamps will 

occur and inform the operator of the approximate date 

when the lamps will need to be replaced.

Replacing UV Lamps

Danger!

These  items  will  need  to  be  performed  by  a  trained  and  qualified 

Certified  Service  Agency  (CSA).  These  tasks  involve  potential 

exposure to high doses of UV light and live electrical components. 

There is a risk of serious injury to skin and eyes from UV light. There 

is risk of shock, injury, and/or death from electrical. For a list of CSA’s 

go to www.gaylordventilation.com and go to the “Service Agencies” 

for a list of certified companies nearest you.

1. 

Secure all power to the CUV-100 control

2.  Secure all circuits that provide power to the UV lamps
3.  Open the UV Access door with the key

4. 

Disconnect the UV module power cord

5. 

Remove the nuts holding the UV module to the ventilator with 

a nut driver

6.  Remove the UV module from the ventilator
7.  Remove the bolts on each end of the UV module (2 on each 

end) that hold the end caps on. (see below)

8. 

Disconnect the lamp connector(s) on the UV lamp(s) to be 

replaced

•  Each lamp connector should be labeled from 1 to 6 on 

both ends

•  Lamp #1 is at the Front of the ventilator when the UV 

module is installed

•  Lamp #6 is at the Back of the ventilator when the UV 

module is installed

•  Be sure to re-label the lamp connectors if necessary

9. 

Lubricate the lamps around the grommets on each end of the 

UV lamp with a small amount of G-510 or similar detergent

10. 

Slide the UV lamp out one end, CAREFULLY!

11. 

Inspect the grommets around the lamps

•  Replace any grommets that show cracks, or any other 

damage

Warning:  

Do 

NOT

defeat any interlocks during cleaning and maintenance!

CERTIFIED SERVICE AGENT MAINTENANCE WARNING!

UV Lamp

Grommet

UV Module

Lamp Connector

Red Silicone Gasket

Module End Cap

Nylon Washer

1/4

 - 20 Bolt

FIGURE 11