Gas supply Extractor fan safety switch?

[South Spark]

Took a look at a job in a commercial kitchen. I normally do domestic so I've never seen this before but there's a some kind of automatic switching that detects gas flow to the oven and automatically starts the extractor hood.

It's obviously malfunctioned at some point because it's been bypassed - where would I source a replacement? Also would it involve any gas safe work?

 

[Engineer54]

If your a DI, then i strongly advise you not to get involved with any work like this.
I'll say no more!!

 

[telectrix]

DI or not. i assume gas safe will apply here. geordie???

 

[Plonker 3]

I would say there is some sort of BMS panel involved that activates the relevant equipment when need to. You need to locate this and work out if thats operating correctly first before replacing any equipment .

 

[South Spark]

Tbh - the customers are friends - just taken on running a cafe so have come to me for advice. If anyone knows who manufactures these switches then I'll have a chat with their technical team before proceeding.

 

[ImpededLoop]

It'll be a gas interlock that isolates the gas until the ventilation is switched on. It'll verify this using a differential pressure switch in the ductwork. There should also be emergency stop switches connected to the unit.

The interlock device may well also include an automatic procedure where it proves that there is no leakage from the outgoing pipework before it opens the gas solenoid valve.

 

[Geordie Spark]

DI or not. i assume gas safe will apply here. geordie???

It depends on whether you want it done legit or not.

 

[Geordie Spark]

It'll be a gas interlock that isolates the gas until the ventilation is switched on. It'll verify this using a differential pressure switch in the ductwork. There should also be emergency stop switches connected to the unit.

The interlock device may well also include an automatic procedure where it proves that there is no leakage from the outgoing pipework before it opens the gas solenoid valve.

That's the fella!!

 

[Geordie Spark]

Tbh - the customers are friends - just taken on running a cafe so have come to me for advice. If anyone knows who manufactures these switches then I'll have a chat with their technical team before proceeding.

Does it not have a makers plate on it??

 

[telectrix]

Does it not have a makers plate on it??

it's a bloody oven. it will have baking trays, not plates.

 

[Geordie Spark]

Tbh - the customers are friends - just taken on running a cafe so have come to me for advice. If anyone knows who manufactures these switches then I'll have a chat with their technical team before proceeding.

www.ventamsystems.com - Gas Interlock Systems and Gas Proving Systems page