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fluorescent lamp and humidity issues

Greetings,
(this is my first post)
We have a fluorescent lighting fixture in our kitchen (typical office light...two bar lamps, if that's what they're called). It is at least 5 years old, probably older.

In our location, it is frequently very humid (>80%). On humid days when we open the house, the light does not come on at all or one of the lamps comes on about 1/3 partial brightness.

Sometimes, we can make it come on by flicking the switch rapidly on/off.
Is this a feature of fluorescents?
Should we look at the starter or ballast or what?

thanks in advance
- s

Re: fluorescent lamp and humidity issues

[QUOTE=google]Greetings,
(this is my first post)
We have a fluorescent lighting fixture in our kitchen (typical office light...two bar lamps, if that's what they're called). It is at least 5 years old, probably older.

In our location, it is frequently very humid (>80%). On humid days when we open the house, the light does not come on at all or one of the lamps comes on about 1/3 partial brightness.

Sometimes, we can make it come on by flicking the switch rapidly on/off.
Is this a feature of fluorescents?
Should we look at the starter or ballast or what?

thanks in advance

Alot of times the lamp is not in the socket correctly. On the end of the lamp on the metal part is a depressed line that must be facing directly 90 degress from the lamp socket(facing down towards the floor is it is ceiling mounted)when you insert the lamp. That makes the two pins touch the socket when twisting it in the sockets. Sometimes if they are not seated correctly it will not ignight the gases with in the lamp in the starting cycle. If that does not work replace the lamp first and inspect the socket to make sure it is touching the pins on the lamp. If that still does not work replace the starter (most modern fixtures do not use starters). If that still does not work it could be the ballast. I doubt that humidity is a problem but the ambient temperature can add to the connections problems I mentioned above.
:)

Re: fluorescent lamp and humidity issues

[QUOTE=YukYuk]Well first off the gas in the fluorescent lamp isn't ignited.

Ok I yield when the gases are excited. I wasn't trying to impress anyone with my knowledge. I was trying to explain in layman terms. I think you just restated what I said using different words in the rest of your answer I am glad I taught you something new.

havanagranite
Re: fluorescent lamp and humidity issues

Harry some aren't teachable:D

Re: fluorescent lamp and humidity issues
havanagranite wrote:

Harry some aren't teachable:D

I agree to funny!!!!

Re: fluorescent lamp and humidity issues
YukYuk wrote:

I've posted similar information before you joined this site, you have not taught me a thing. :D

Oh thats right under Leslie. Leslie
:p

canuk
Re: fluorescent lamp and humidity issues
YukYuk wrote:

you have not taught me a thing. :D

Nor have you.

Re: fluorescent lamp and humidity issues
canuk wrote:

Nor have you.

It is called a PHD at the university of Google.

My dad always told me there were three degress

BS is Bull Sh**
MS is More sh**
PHD is pilled high and Deep

canuk
Re: fluorescent lamp and humidity issues
Ravens53 wrote:

It is called a PHD at the university of Google.

PHD is pilled high and Deep

.... LOL :D

mcline27b
Re: fluorescent lamp and humidity issues

I had the same humidity issues with two identical kitchen fixtures, here's what I found researching it:

"If, under high humidity conditions, Rapid Start lamps start slowlyor do not start at all although the cathodes are properly heated,this may be due to dirt on the lamps which is offsetting the siliconcoating on the lamps, or it may be due entirely to a poor siliconcoating. If it is a new installation (in operation only a few months)which experiences random starting under high humidity condi-tions, in most cases it will be due to low supply voltage or poor silicon coating on the lamps. When random starting is experienced under high humidity condi-tions in an installation in operation for a longer period of time this isusually due to dirt on the lamps. The lamps should be washed inwater to remove the dirt."

burlrodgers
Re: fluorescent lamp and humidity issues

Hello , I have been working on this problem for quite a while with no success really , the only thing I can find to be working for me is temporary (cleaning tubes and or tombstones, rub hands together and just brush hands from each end of tubes towards the middle, friction? , turn on heat for a bit, till they come on ,or a/c , or white grease on the end of tube prongs,silicon spray on ends,turning tubes back and forth, etc....... ) one thing I have heard and found that does seem to work so far that I just found out days ago is I took one light down that was a lot of trouble and maybe 8 years old . I put new bulbs in it about 2 years ago and it worked better for a time , but has since gone back to its old ways . welp ! I have takin it down a week ago and set it upon a box and every day I try it ,and it was a failure with the high humidity still . The only thing I have done now is to disassemble the light (no cleaning involved ) and then I took the ground wire to the body of the light off and ground the paint off and put the ground wire back and reassembled the light with all the same tubes and such. It has worked ever since and am going to try another one today just the same way . this is a shop with high humidity from the machines running and there is oil in the air and dripping from everything . It does not seem to have bothered the old style tube lights we had and still have some of around . It just seems to be the newer ones ,and by newer I mean 25 years old or newer without the external,replaceable starters . good luck

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