SamT
Moderator
Right - bit of an odd one that I'm sure some electrical boffin on here might be able to guide me on.
Just bought (off the internet from italy, so i don't expect any customer service) a rather nice and expensive cooker hood and had it fitted in our lovely now kitchen. Get me.
It was chosen on the basis if it having a low noise rating compared to other fans.
On first trying it, we were blown away by the noise, its like a Hercules transporter plane taking off, on its lowest setting. Instead of 1,2 3 on the power settings, it should be Hercules, Sea King, 747.
Its published dB was 52, On its lowest setting, my App on my phone was measuring 75dB at 1m away (the level at which employers have to inform and train staff on the dangers of noise etc).
Building regs states that it should be pulling about 30l/s air flow. Measured on the outlet outside it was pushing 65 odd l/s, so twice the rate it needs to be.
It cant really be replaced (built into kitchen) and as mentioned not expecting any kind of customer service.
So.....
I'm wondering if I can fit some sort of variable speed controller, in line to the motor, to turn the damn thing down. At the moment, we're just not using it as its too loud which makes it a very expensive, pretty, but ultimately useless addition to the kitchen.
attached are some pics showing some figures for the electric gubbins inside, but electrics is not my bag.
From googling, I expect the motor will be a brush less induction motor. Looks like there are two cables going to the motor.
Any clues as to whether or not this would be possible/feasible.
Just bought (off the internet from italy, so i don't expect any customer service) a rather nice and expensive cooker hood and had it fitted in our lovely now kitchen. Get me.
It was chosen on the basis if it having a low noise rating compared to other fans.
On first trying it, we were blown away by the noise, its like a Hercules transporter plane taking off, on its lowest setting. Instead of 1,2 3 on the power settings, it should be Hercules, Sea King, 747.
Its published dB was 52, On its lowest setting, my App on my phone was measuring 75dB at 1m away (the level at which employers have to inform and train staff on the dangers of noise etc).
Building regs states that it should be pulling about 30l/s air flow. Measured on the outlet outside it was pushing 65 odd l/s, so twice the rate it needs to be.
It cant really be replaced (built into kitchen) and as mentioned not expecting any kind of customer service.
So.....
I'm wondering if I can fit some sort of variable speed controller, in line to the motor, to turn the damn thing down. At the moment, we're just not using it as its too loud which makes it a very expensive, pretty, but ultimately useless addition to the kitchen.
attached are some pics showing some figures for the electric gubbins inside, but electrics is not my bag.
From googling, I expect the motor will be a brush less induction motor. Looks like there are two cables going to the motor.
Any clues as to whether or not this would be possible/feasible.