[atworkhelp]

I work at a pub and in the kitchen we got a new grease trap sometimes when I pull the plug with water in it we get a strong sewer smell in the whole building its getting to the point that even if I turn on the water we get the smell, we had the plumber come back out 4x's and he can't figure it out I clean out the grease trap every week

[Cedarln2265]

I'm not a plumber :) but since you do have one and he's not found source, I'd check with the local authorities if that strong a smell was coming back into my residence or place of work. Have they done any recent work outside on the mains? Good luck

[speedball1]

Did the smell just start since the grease trap was installed or is this a ongoing problem? Any problems with the sink draining? Does it drain a little slower since the trap was installed? Any back pressure out of the drain as it's draining? Let me know, Tom

[atworkhelp]

Tom it only started after the grease trap was installed & the sink drains fine, were puzzled and afraid to use the sink when were busy so we don't send people running for the door that's not a smell you want to smell when your eating and its hard to run a kitchen with out a sink.

[speedball1]

The very first thing I would do is snake the kitchen roof vent. Is there any noise from the trap as the sink drains. Fill a tub up to the rim and check. If you were gettinga partial clog that produced a "blowback" of sewer gas The vent usually vents the gas out but if the vent were clogged the gas would exit through the trap and drain. Good luck, Tom