I have a new Gast rotary vane vacuum pump.
Model no. 0522-V103-G21DX
The motor is a GE 1/4 hp, 220v, 50HZ, 1425 rpm.

I pulled the cover, for the power cord, only 2 lugs, so no
voltage options.
The other Gast pumps I have are 1725 rpm.

20% over speed, would give 1710 rpm.
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.


--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014

Gary A. Gorgen wrote:
...
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.

Probably, but try it. Run it for an hour or so & see. Knowing what an
honorable seller you are, I know that you will be upfront about the 50
Hz & 220v ratings, so you want to be able to tell your buyer that you
ran it on 240 60Hz without problems.

You certainly don't want to sell it without testing, only to have it
smoke-out for the buyer.

Bob

On 03/08/2011 01:30 PM, Bob Engelhardt wrote:
Gary A. Gorgen wrote:
...
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.

Probably, but try it. Run it for an hour or so & see. Knowing what an
honorable seller you are, I know that you will be upfront about the 50
Hz & 220v ratings, so you want to be able to tell your buyer that you
ran it on 240 60Hz without problems.

You certainly don't want to sell it without testing, only to have it
smoke-out for the buyer.

Put a hand on it, to see if it's getting overly warm. If it has any
problems I would expect it to be the frame laminations getting too warm
from eddy currents -- but someone would have to have been cutting things
_really fine_ in the factory for that to be an issue.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html

On Tue, 08 Mar 2011 11:57:21 -0800, "Gary A. Gorgen"
wrote:

I have a new Gast rotary vane vacuum pump.
Model no. 0522-V103-G21DX
The motor is a GE 1/4 hp, 220v, 50HZ, 1425 rpm.

I pulled the cover, for the power cord, only 2 lugs, so no
voltage options.
The other Gast pumps I have are 1725 rpm.

20% over speed, would give 1710 rpm.
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.

Risky. I wouldn't try that without first asking either Gast or one of
their authorized repair center gods.

--
Life is full of obstacle illusions.
-- Grant Frazier

Gary A. Gorgen wrote:
I have a new Gast rotary vane vacuum pump.
Model no. 0522-V103-G21DX
The motor is a GE 1/4 hp, 220v, 50HZ, 1425 rpm.

I pulled the cover, for the power cord, only 2 lugs, so no
voltage options.
The other Gast pumps I have are 1725 rpm.

20% over speed, would give 1710 rpm.
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

The motor will probably be fine. Speed won't burn it out, overheating
will, and a 50Hz motor run at 60Hz will be fine. The reverse is not true
though.

The load from the pump is the other issue. I sort of doubt gast has
special pump bodies for 50Hz use. It's probably a domesting pump that's
derated for the lower motor speed, so again, you're probably going to be
fine as long as you don't overload the pump. The pump ratings for 50Hz
won't be valid for 60Hz use.

Cydrome Leader fired this volley in news:il6b18
:

The motor will probably be fine. Speed won't burn it out, overheating
will, and a 50Hz motor run at 60Hz will be fine. The reverse is not
true
though.

The load from the pump is the other issue. I sort of doubt gast has
special pump bodies for 50Hz use. It's probably a domesting pump that's
derated for the lower motor speed, so again, you're probably going to
be
fine as long as you don't overload the pump. The pump ratings for 50Hz
won't be valid for 60Hz use.


I go with that. The motor won't overheat from too high a frequency, it
will overheat from too low a frequency. The 20% overspeed shouldn't be a
major problem, either, for the above reason.

LLoyd

Bob Engelhardt wrote:
Gary A. Gorgen wrote:
...
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.

Probably, but try it. Run it for an hour or so & see. Knowing what an
honorable seller you are, I know that you will be upfront about the 50
Hz & 220v ratings, so you want to be able to tell your buyer that you
ran it on 240 60Hz without problems.

And don't panic when you hear the racket
the thing will make. It's normal. They
are irritating as hell.

Lloyd E. Sponenburgh wrote:
Cydrome fired this volley in news:il6b18
:

The motor will probably be fine. Speed won't burn it out, overheating
will, and a 50Hz motor run at 60Hz will be fine. The reverse is not
true
though.

The load from the pump is the other issue. I sort of doubt gast has
special pump bodies for 50Hz use. It's probably a domesting pump that's
derated for the lower motor speed, so again, you're probably going to
be
fine as long as you don't overload the pump. The pump ratings for 50Hz
won't be valid for 60Hz use.


I go with that. The motor won't overheat from too high a frequency, it
will overheat from too low a frequency. The 20% overspeed shouldn't be a
major problem, either, for the above reason.

LLoyd


You get a little more HP out of it too.

John

Bob Engelhardt wrote:
Gary A. Gorgen wrote:
...
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.

Probably, but try it. Run it for an hour or so & see. Knowing what an
honorable seller you are, I know that you will be upfront about the 50
Hz & 220v ratings, so you want to be able to tell your buyer that you
ran it on 240 60Hz without problems.

You certainly don't want to sell it without testing, only to have it
smoke-out for the buyer.

Bob

That is exactly why I asked the question.

--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014

Jim Stewart wrote:
Bob Engelhardt wrote:
Gary A. Gorgen wrote:
...
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.

Probably, but try it. Run it for an hour or so & see. Knowing what an
honorable seller you are, I know that you will be upfront about the 50
Hz & 220v ratings, so you want to be able to tell your buyer that you
ran it on 240 60Hz without problems.

And don't panic when you hear the racket
the thing will make. It's normal. They
are irritating as hell.

I have some small gast pumps, I know about the noise. :-)

--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014

Cydrome Leader wrote:
Gary A. Gorgen wrote:
I have a new Gast rotary vane vacuum pump.
Model no. 0522-V103-G21DX
The motor is a GE 1/4 hp, 220v, 50HZ, 1425 rpm.

I pulled the cover, for the power cord, only 2 lugs, so no
voltage options.
The other Gast pumps I have are 1725 rpm.

20% over speed, would give 1710 rpm.
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

The motor will probably be fine. Speed won't burn it out, overheating
will, and a 50Hz motor run at 60Hz will be fine. The reverse is not true
though.

The load from the pump is the other issue. I sort of doubt gast has
special pump bodies for 50Hz use. It's probably a domesting pump that's
derated for the lower motor speed, so again, you're probably going to be
fine as long as you don't overload the pump. The pump ratings for 50Hz
won't be valid for 60Hz use.



That was my guess, but I wanted to check.
This is a dry rotary vane pump, I don't think it can be overloaded.

--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014

Gary - What is the motor model #?

Many are rated for 50/60hz use on the web site / via technical support
brochures but do not say so on the label fixed to the motor.

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
Production Tapping: http://Production-Tapping-Equipment.com/
Flagship Site: http://www.Drill-N-Tap.com
VIDEOS: http://www.youtube.com/user/AutoDrill
TWITTER: http://twitter.com/AutoDrill
FACEBOOK: http://tinyurl.com/AutoDrill-Facebook

V8013-R


"Gary A. Gorgen" wrote in message
...
I have a new Gast rotary vane vacuum pump.
Model no. 0522-V103-G21DX
The motor is a GE 1/4 hp, 220v, 50HZ, 1425 rpm.

I pulled the cover, for the power cord, only 2 lugs, so no
voltage options.
The other Gast pumps I have are 1725 rpm.

20% over speed, would give 1710 rpm.
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.


--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014

Joe AutoDrill wrote:
Gary - What is the motor model #?


5KH39KG427T

The plate says 50Hz, not 50/60 Hz.

I didn't have much luck finding anything, probably asking wrong.
There is G21DX, on the plate. Also part of the Gast part no.

Many are rated for 50/60hz use on the web site / via technical support
brochures but do not say so on the label fixed to the motor.

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
Production Tapping: http://Production-Tapping-Equipment.com/
Flagship Site: http://www.Drill-N-Tap.com
VIDEOS: http://www.youtube.com/user/AutoDrill
TWITTER: http://twitter.com/AutoDrill
FACEBOOK: http://tinyurl.com/AutoDrill-Facebook

V8013-R


"Gary A. Gorgen" wrote in message
...
I have a new Gast rotary vane vacuum pump.
Model no. 0522-V103-G21DX
The motor is a GE 1/4 hp, 220v, 50HZ, 1425 rpm.

I pulled the cover, for the power cord, only 2 lugs, so no
voltage options.
The other Gast pumps I have are 1725 rpm.

20% over speed, would give 1710 rpm.
The question is, can this pump be run at 240v 60Hz, without
the magic smoke leaking out.

I'm going to sell it, so I don't want to blow it up.


--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014





--
Gary A. Gorgen | "From ideas to PRODUCTS"
| Tunxis Design Inc.
| Cupertino, Ca. 95014