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I have a 3 phase AF-22 and it's very noisy so I definitely wear ear
protection every time I turn any of my machines on.

Larry J

John,

Is your AF-22 dust collector single phase? I gather it is based on your
comments of using a standard X-10 compatible wireless 220v switch. At the
other Felder owner's shop in Seattle that I visited yesterday, he told me
about his experience with his AF-22 being too noisy. That unit was also
single-phase. According to the Felder rep who visited, the problem on the
older versions of the AF-22 was that the single-phase motor was rated for 50
Hz, but on 60 Hz it ran 20% faster which threw a big wrench into their
careful system design. They tried to subsitute a smaller impeller, but
couldn't pull the existing one off the shaft. That particular unit went back
to Felder and was replaced with an Oneida 2hp cyclone system.

As you know, I couldn't believe how quietly the used AF-22 I bought with my
BF6-31 ran when I tried it out before buying. That unit is a three-phase
model, and may not be affected by the same issue of running too fast. Not
sure why that would be, but it was something we wondered about while
discussing it yesterday.

Any thoughts, John or anyone else? Does anyone else have an relatively quiet
running AF-22? Single phase or three phase? Anyone have the new redesigned
AF-22LN? How quiet is it? With my preoccupation with power tool noise, maybe
I should buy a sound level meter one of these days!

--
Geoff Shepherd
(felder-woodworking group manager)
mailto:Geoff@...
Everett, WA
BF6-31, AF-22 (not wired in yet!)

I cannot respond regarding three phase vs single phase in the Felder AF-22,
but my BF7-41 originally shipped with single phase motors which were (in my
opinion) noisy and caused the machine base to vibrate. Felder graciously
swapped out the motors for three phase which were quieter and produced
dramatically lower vibration.

Felder hinted that the single phase motor supplier was providing motors that
had a wide range of these characteristics...that is some were as quiet as a
three phase and some were much, much noisier. I don't know if the same
supplier is used for the dust collector.

Single and three phase motors should produce roughly the same rotation speed
when powered from the same line frequency. The synch speed is obviously the
same and the slip is within a couple percent.

I use a single phase 3HP Leeson powered blower exhausting a cyclone and it
sounds like an F-16! I have mounted the unit in the attic above my garage
to keep the noise out of the working area. I have yet to complete the air
ducting, so I hope this works out.

Geoff, I bought the AF-22 LN at the IFW show in Anaheim last July.
John Renzetti clued me in on the LN version other wise I may have ended
up the other as none of the sale people made a reverence to either
one. Anyway the AF-22 LN is my first dust collection system other than
the old Sears ShopVac I have so I don't really have anything to compare
to. I will say that I find the noise level of the LN to be quite
acceptable. The pitch of the noise is more of a low sound rather than
the high pitch of my shop vac, when using my AD-471 Jointer/planer I
hardly hear it over the noise generated my the AD-741. Presently I
have the AF-22 LN connected to the AD-741 with a 24' piece of flexible
hose so this put the unit fairly close to the work area. Rich


"geoff shepherd" <geof-@...> wrote:
original article:
=52

John,

Is your AF-22 dust collector single phase? I gather it is based on

your

comments of using a standard X-10 compatible wireless 220v switch. At

the

other Felder owner's shop in Seattle that I visited yesterday, he

told me

about his experience with his AF-22 being too noisy. That unit was

also

single-phase. According to the Felder rep who visited, the problem on

the

older versions of the AF-22 was that the single-phase motor was rated

for 50

Hz, but on 60 Hz it ran 20% faster which threw a big wrench into their
careful system design. They tried to subsitute a smaller impeller, but
couldn't pull the existing one off the shaft. That particular unit

went back

to Felder and was replaced with an Oneida 2hp cyclone system.

As you know, I couldn't believe how quietly the used AF-22 I bought

with my

BF6-31 ran when I tried it out before buying. That unit is a

three-phase

model, and may not be affected by the same issue of running too fast.

Not

sure why that would be, but it was something we wondered about while
discussing it yesterday.

Any thoughts, John or anyone else? Does anyone else have an

relatively quiet

running AF-22? Single phase or three phase? Anyone have the new

redesigned

AF-22LN? How quiet is it? With my preoccupation with power tool

noise, maybe

I should buy a sound level meter one of these days!

--
Geoff Shepherd
(felder-woodworking group manager)
mailto:Geoff@...
Everett, WA
BF6-31, AF-22 (not wired in yet!)

...after looking around, I'm having a (single phase) Oneida 1.5 hp. system shipped to me this week - will post after I've had it hooked up - they claim 75-80 db (Leeson 3450 rpm motor) and also offer a silencer to further reduce noise.? I've also built a simple relay system that allows control of my dust collector from any machine location - control wires @ 24 volt, so any small 2-wire jacketed wire works great (phone wire, thermostat cable, etc.) simple off-the-shelf Grainger parts, about $35 in parts.? Email me off list if you want specifics.

It's been my experience that noise in fan systems is almost always a fan balance problem - cheap collectors are notorious for out-of-balance fans - Oneida offers a balanced refit for the 2hp Taiwanese fans that's supposed to cut noise and vibration tremendously.? I'm surprised that fan noise would be much affected by the speed difference between a 50hz and 60hz motor - suspect that Felder's fan source has some QC issues...
?
Hearing protection is critical!!!? Those who know about these things claim that 5 minutes exposure to levels exceeded in woodworking can cause permanent and irreparable damage - I've got 30 years in the trades, and, like a fool, worked without hearing protection during the first part (as we were all too macho to wear headphones), causing significant hearing loss.? My solution, after trying every headphone available, is to go with the cheapie foam plugs (connected with an orange plastic cord - Grainger again...) AT ALL TIMES!? They're comfortable enough to wear all day, and you can converse while wearing them when the machinery is off.? I've got a set of Peltor phones for short -term realy noisy stuff like planing - they'll knock off a couple more db than the plugs.? Like everything else, hearing protection becomes a habit -
?

Nibs1@... wrote:

Dear Richard,

You do have a LN or lower noise unit as we stopped bring in the 50Hz
fan models right after John received his. We new he was a sucker, so we
gave him a unit that really sucks. All kidding aside both work very
well, but the earlier models were louder.

JH





"richard mccomas" <rmccoma-@...> wrote:
original article:
=55

Geoff, I bought the AF-22 LN at the IFW show in Anaheim last July.
John Renzetti clued me in on the LN version other wise I may have

ended

up the other as none of the sale people made a reverence to either
one. Anyway the AF-22 LN is my first dust collection system other

than

the old Sears ShopVac I have so I don't really have anything to

compare

to. I will say that I find the noise level of the LN to be quite
acceptable. The pitch of the noise is more of a low sound rather than
the high pitch of my shop vac, when using my AD-471 Jointer/planer I
hardly hear it over the noise generated my the AD-741. Presently I
have the AF-22 LN connected to the AD-741 with a 24' piece of flexible
hose so this put the unit fairly close to the work area. Rich


"geoff shepherd" <geof-@...> wrote:
original article:

rt

=52

John,

Is your AF-22 dust collector single phase? I gather it is based on

your

comments of using a standard X-10 compatible wireless 220v switch.

At

the

other Felder owner's shop in Seattle that I visited yesterday, he

told me

about his experience with his AF-22 being too noisy. That unit was

also

single-phase. According to the Felder rep who visited, the problem

on

the

older versions of the AF-22 was that the single-phase motor was

rated

for 50

Hz, but on 60 Hz it ran 20% faster which threw a big wrench into

their

careful system design. They tried to subsitute a smaller impeller,

but

couldn't pull the existing one off the shaft. That particular unit

went back

to Felder and was replaced with an Oneida 2hp cyclone system.

As you know, I couldn't believe how quietly the used AF-22 I bought

with my

BF6-31 ran when I tried it out before buying. That unit is a

three-phase

model, and may not be affected by the same issue of running too

fast.

Not

sure why that would be, but it was something we wondered about while
discussing it yesterday.

Any thoughts, John or anyone else? Does anyone else have an

relatively quiet

running AF-22? Single phase or three phase? Anyone have the new

redesigned

AF-22LN? How quiet is it? With my preoccupation with power tool

noise, maybe

I should buy a sound level meter one of these days!

--
Geoff Shepherd
(felder-woodworking group manager)
mailto:Geoff@...
Everett, WA
BF6-31, AF-22 (not wired in yet!)