Numatic Henry Question

[jmurray01]

The ID sticker on my 2007 Numatic Henry says it is 1000W IEC and 1200W MAX, so does that mean the wattage on Lo is 1000W ?

 

[juniorsenior]

Yes 1000w on low and 1200w on high.

 

[vintagerepairer]

Hello again. It is not the two speeds, but I can see why you would think that. The wattages relate to the electricity supply, which on the rating plate should say 220 - 240 volts. Your cleaner will run at 1200w on 240V. The IEC rating, which I think means International Electrotechnical Commission, is either the lowest or average likely power consumoption when used at less than 240v. It was during the 1990s that rating plates started displaying two wattages, but then rating plates have changed a lot over the years. I don't know why it was decided to start displaying two wattages. I am sure that in the days gone by the single wattage on the rating plate was when the appliance was used at the maximum permissable voltage.

 

[turbo500]

Jamie...

If you're Henry has a hi/lo switch, it should be 650w on low, 1000w on max. The only time your Henry will reach 1200w is when you put your hand over the end of the hose, or the floorhead is placed on a really thick carpet. You know when you can hear the motor power up when you put the floorhead on a thick rug? That's the 1200w kicking in.

 

[vintagerepairer]

Hello Turbo 500. Could you explain this a bit more as I'm not sure I fully understand. Are you saying that the Henry cleaners have a feature which boosts the motor wattage when suction is restricted?

 

[twocvbloke]

Errrrm, actually, energy consumption is lower when you block up the hose, the vac needs less power to turn the fan and therefore the watts used drops, so the only time the vac will consume the 1200 would be on startup, and maybe when it has clean filters & bags with maximum airflow...

See "The secret life of Machines - The Vacuum Cleaner" for a demonstration of this simple principle...

 

[jmurray01]

Ah, thanks for explaining that.

650W on Lo and 1000W on Hi, except for when it is on thick rugs etc...

 

[jmurray01]

OK... So 650W on Lo and 1200W on Hi then ?

 

[vintagerepairer]

Hello 2cv. That TV show was what I was thinking about as I sat here! I have just gone round the house very quickly, looking at the rating plates on my appliances. All of the ones I looked at are single consupmtion, by that I mean not two speed or variable and so on. It is best summed up by my Rowenta iron which says:

230V - 1600W

240V - 1750W

which indicates that on a lower voltage the appliance has a lower wattage.

 

[vintagerepairer]

1200 on maximum setting yes, but only when used on the maximum permittable voltage. That being 240V. On 220V it will use 1000W or thereabouts on the highest setting.

 

[jmurray01]

Oh I see! Got it now.

 

[turbo500]

All vacuums do. When you look at the ratings plate and it says "1000w nom / 1200w max" or something to that effect, thats what that means. Basically, if you put your hand over the end of the hose, the motor increases in sound and the suction increases - that's full power. But vacuums don't run at the constant maximum all the time - the motor would overheat otherwise. I'm probably not explaining this all too well...maybe somebody else would be able to explain it better than I can, but I know what I mean in my head lol

 

[turbo500]

Further to the above...

Well, you learn something new everyday!

I must find out where in the heck I read that about the motor then

 

[vintagerepairer]

Hello. Jmurray I think you were thrown a bit of a curved ball at the suggestion that the cleaner wattage was increased to 1200w when airflow was restricted, as I have no idea how this could be or why it would be neccesary to do that. I had it mind as did 2CV it seems that it was the demonstration on the Secret Life of the Vacuum Cleaner which showed an Electrolux cleaner using more power / less power depending on the restrictions to the air flow. When the air flow is blocked, either front or back, there is no movement and no resistance placed upon the fans. Therefore the motor runs much faster and more easily. But the increase in power consumption as a result of air restriction is not going to be worthy of note really. Like I say, the difference in wattages on the rating plate you talk of is down to the supply voltage. You could say that a 60watt bulb is only such when used at the maximum wattage, if you see what I mean.

 

[twocvbloke]

According to Europe, we all harmonised our power supplies at 230v, except we didn't, we just added tolerances either way (european power goes between 220v to 240v, so that was just a wasted exercise just to make up a law that had no meaning), so, because manufacturers have to work with such a wide range, they have to have their own tolerances too, so, they print a maximum power used rating with a voltage rating that usually says 220-240v AC...

And some people wonder why the UKIP party exists... :&#92

 

[vintagerepairer]

2CV. I like that.

 

[jmurray01]

So does this mean my 1994 HOOVER Turbopower 1000 that says 900W-1000W on the sticker may go below 900W on minimum power ?

It only has the one 240V rating on the sticker, not two.

 

[twocvbloke]

The watt rating it what it would use at most, it's actual consumption will vary depending on how it's used, how clean it is and even what the temperature is, it's a variable basically, it's never quite the same from one moment to the next...

 

[juniorsenior]

Well thats something else learned i always thought this way as my Senior displays the 400w lo 600w hi on the rating plate so just assumed.
The Henry's i have at work are all 110v for industrial use they really get treated rough and still keep going.
Great machines.