External Floodlights - Warehouse

Owen · Oct 29, 2018

Hi,

I have leased a warehouse for about a year now and have had an issue with the external floodlights.

There are about 12 in total that come on when its dark. Each one turns on, warms up, then at their full brightness turn off. This happens every 5 minutes or so. Each light does this but not simultaneously. Kind of one after the other in some strange sequence, a couple maybe at the same time, but the same cycle nonetheless.

Is there a setting that would cause this, or are they likely faulty? I just want them to come on and stay on until morning for security.

Cheers

Owen · Oct 30, 2018

suffolkspark said:
Try a couple of new bulbs and see if they behave, would it be your responsibility to replace the fittings if your leasing?

Just the bulbs 1st to see if that works?

No, I suppose not. However he has said all the lights were working when we took the lease on. But i have told him about them before buit didnt progress with the issue.

westward10 · Oct 30, 2018

General maintenance is likely to be your responsibility but yes replace a few tubes and see how it goes.

Deleted member 105166 · Oct 30, 2018

Depending on for how long you intend to occupy the building and how many hours the lights are on, you may well find the savings on energy costs go a long way toward the cost of the LED replacement, or indeed better. If that doesn't quite wash its face, you could capitalise the LED installation (whereas energy costs are a revenue charge to your P&L) and then you're only paying 25% of the LED replacement in year one but yielding the full benefit in operating costs...and do it at the start of your financial year.

Owen · Oct 30, 2018

Thanks again for the replies. The whole sequence thing is really strange. I am going to review CCTV to see if its the same sequence each night? I have uploaded a photo of one of the fittings leaning out the window.

[ElectriciansForums.net] External Floodlights - Warehouse

freddo · Oct 30, 2018

Those are SON lights which give out orange light! Almost certainly ageing lamps causing the problems.

suffolkspark · Oct 30, 2018

Honestly theres no need... As a few of us have said, this is what those type of lamp do at the end of their life, grab yourself a couple of replacements (size will be on bulb)

Deleted member 105166 · Oct 30, 2018

The arc tubes look to be blackening toward each end, a sign typical of end of life, as suggested by many posts on here.

westward10 · Oct 30, 2018

I suspect that fitting in your pic may have water laying inside it.

Owen · Oct 30, 2018

What type of bulb do i need to get - there seems to be 2 listed on the fitting. Cheers

suffolkspark · Oct 30, 2018

Its written on the bulb

Simonpotts1 · Oct 31, 2018

Is that an e27 thread ?if so you can get led lamps that will fit though it does involve bypassing control gear,an easy job,lamps expensive but less than new fittings & labour.

jdinduntocher · Nov 3, 2018

Had this issue years ago on a old mod building and it was caused by individual photocells in the fitting reacting to light from other fittings switching them off and on as each light heated up and changed lux levels. If possible try disconnecting photocells and see if lights stay on just do a couple as test and go from there