Emergency Maintained Lighting Problem

[jbooth]

we have numerous circular bulkhead fittings within our community building. They are 28w 3 hour maintained units. The problem is one unit is not working when switched on, and at first just assumed it was the bulb, so changed that, and still nothing, however when run in emergency test mode the bulbs illuminates dim as normal. Does anybody know any common problems that this could be to fix the problem

many thanks

 

[davelerave]

while since i looked at one -but may be an electronic ballast fault

 

[jbooth]

thanks for the reply. Would replacing the ballast be easy to do or what would be the likely costs for supply or supply and fit by an electrician.

 

[michaelw6]

be cheaper to just replace the fitting...

 

[Spudnik]

Agree with above^^

 

[telectrix]

ditto. replace fitting

 

[pmac10]

older units will have a starter, does this one? pence to replace

 

[davelerave]

emergency backup will prob have 'electronic ballast '

sometimes you may need an 'exact' replacement with light fittings-and a repair may be handier


it's not rocket science we're talkin here

 

[pmac10]

your right Dave, its not rocket science, i fitted a brand new model last week (cheap one), with no electronic ballast, just tube and starter, with small pcb, and im sure youll agree a starter is a starter, no need for 'exact' replacement, say 4-65W?
on the other hand you may be correct, i hate HF ballasts, just dont want the op to buy a new fitting when he just needs a starter.

 

[davelerave]

replacement fitting generally

but still-nice to able to repair when the need arises


you could train a 'chimp' to replace fittings

 

[One_of_them]

my experience with fittings is basically get some new tubes and try. If no joy, find a same fitting and try "them new" tubes in that fitting and the known working tubes in your questionable fitting. Basically if the questionable fitting still aint working with the known tubes and the new tubes defo work in the other fitting, chances are its the ballast if it's HF.
Main issue im having with all my fittings is the ballast/fittings are all wired in parallel. Meaning everytime a ballast fails, i've gotta get a new fitting (which isnt exactly cheap as everyone makes out) or re-wire the old fitting to accept a series wired ballast. Pain in the ****
I've yet to find a faulty EM unit as even though the ballast i've worked with have gone wrong, the EM function still seems to work. But its seems such a chew on fiddling with EM fittings its defo easier and better time wise to just change the fitting

 

[pmac10]

dave, just read post 8 again, do you know what an electronic ballast is?? its not a backup device for emergency lighting? so do you?? replacement fitting?? telll me more.

 

[davelerave]

(edited that)i meant the emergency fitting will prob utilise an 'electronic ballast' for mains lamp operation(with separate emergency module and battery)
http://www.alter.ee/sites/default/files/DS_EM_BASIC_en.pdf





Robus R282DEPK CU 28Watt 2D Universal Emergency Gear Tray | Buy Online

that link shows an inverter ballast

afraid i don't know too much myself

 

[pmac10]

sorry dave, now i'm with you.