I opened the valve and didn t hear much gases leaking out the gage is on 30.
I fould the blue hose connected to the small plastic box with two wires ( the two wires were already tied together.) I was about to scan so something had worked. I keep getting the error mesg overpresure before i start each scan but it still allows me to scan. I have notice my scans look salt and pepper looking? help me out here
Joseph,
can you, please, email me a picture of the gage showing (zoomed) and the gage position on the magnet. It can be ice danger for the magnet if it leaks, better to manage quick!
Joe,I dont remember a gage on Philips, this why I am asking, is it an ordinary mechanical pressure meter with a pointer? In which units it is 30? Where it is positioned exact?
The problem is that, or the pressure in the magnet is lower then must be, this is ice block danger, or the simple pressure sensor (little plastic box with two wires) and some simple electronics are wrong, this is not danger.
If your magnet really has an ordinary mechanical pressure meter (with a pointer) installed at the output of the magnet ventilation system and it shows 30mBar(depend on magnet configuration) and is OK, the problem more probably in the little plastic box with wires and electronics
The message means there isnt enought POSITIVE pressure from magnet to outside, that means you have to build pressure.
First of all STOP opening the yellow ball valve, you are wasting time. You need to build pressure. Not release it!
How to build preassure? If you got a remote magnet monitor unit, turn on the BO heatear, and wait about 2 hours to reach about 69mbar (1.0 psig) Thats the nominal operating pressure.
Be carefull to not open any part of the magnet, cause the minimun pressure to ramp or he filling, is 35mbar, do not release more pressure. You can get into a big ice problem if air comes into magnet.
This is the only way to build pressure into the magnet, i suggest you to contact IGC or Philips to provide the RMMU to fix this asap.
Looking for the leader in urology? BK Medical is and we are the 3rd party experts. We sell BK and many other brands. Call today to discuss your urology equipment needs and save $1,000’s! Call Today: 1-888-838-7488 Email: sales@sentinelimaging.net
Joseph Ladika
insuffient helium overpressure error msg
March 21, 2005 02:01
I got this msg and cant scan
what is it and what can i do
to rate and post a comment
Marshall Shannon
Re: insuffient helium overpressure error msg
March 21, 2005 02:18
If this is a philips scanner, call for solutions.
214-707-4449
Marshall
to rate and post a comment
Joseph Ladika
Re: insuffient helium overpressure error msg
March 21, 2005 07:25
I opened the valve and didn t hear much gases leaking out the gage is on 30.
I fould the blue hose connected to the small plastic box with two wires ( the two wires were already tied together.) I was about to scan so something had worked. I keep getting the error mesg overpresure before i start each scan but it still allows me to scan. I have notice my scans look salt and pepper looking? help me out here
Joe
to rate and post a comment
Marshall Shannon
Re: insuffient helium overpressure error msg
March 22, 2005 09:22
Joe, what is the current helium boiloff? When was the coldhead last changed? What is the current helium level?
Also look for any ice accumulation on the top of the magnet.
If you have a daily helium log, give me the average loss over the past 3 days.
to rate and post a comment
Joseph Ladika
Re: insuffient helium overpressure error msg
March 22, 2005 12:29
HI
Just had the cold head replaces last monday.
No ice on top of magnet
Helium is at 60% yesterday
Helium is at 59% today
to rate and post a comment
shahzad Ahmad
Re: insuffient helium overpressure error msg
March 21, 2005 02:21
which make and model?
to rate and post a comment
Milner A. Flecha
Re: insuffient helium overpressure error msg
March 21, 2005 07:11
If this is a Philips System.
Check the yellow valve in the top of the magnet.
Regards
to rate and post a comment
Joseph Ladika
Re: insuffient helium overpressure error msg
March 22, 2005 11:21
the yellow valve is crossing the pipe.
I had open it to let off some pressure.
then gage now reads 30
Today 3/22/05 when i turned on the Philips MRI 1T magnet I get this msg.
Helium overpressure to low.
How can i fix this???
to rate and post a comment
Iosif Sogolov
Re: insuffient helium overpressure error msg
March 22, 2005 01:10
Joseph,
can you, please, email me a picture of the gage showing (zoomed) and the gage position on the magnet. It can be ice danger for the magnet if it leaks, better to manage quick!
Iosif
to rate and post a comment
Joseph Ladika
Re: insuffient helium overpressure error msg
March 22, 2005 04:27
I cant get my camera in the room.
the gauge is on the top No ice on or around it
reads 30
joe
to rate and post a comment
Iosif Sogolov
Re: insuffient helium overpressure error msg
March 22, 2005 05:26
Joe,I dont remember a gage on Philips, this why I am asking, is it an ordinary mechanical pressure meter with a pointer? In which units it is 30? Where it is positioned exact?
The problem is that, or the pressure in the magnet is lower then must be, this is ice block danger, or the simple pressure sensor (little plastic box with two wires) and some simple electronics are wrong, this is not danger.
If your magnet really has an ordinary mechanical pressure meter (with a pointer) installed at the output of the magnet ventilation system and it shows 30mBar(depend on magnet configuration) and is OK, the problem more probably in the little plastic box with wires and electronics
to rate and post a comment
Joseph Ladika
Re: insuffient helium overpressure error msg
March 23, 2005 09:56
what should the gauge read ?
to rate and post a comment
Jose Esteban Perez Ibanez
Re: insuffient helium overpressure error msg
May 21, 2005 07:25
Joseph,
The message means there isnt enought POSITIVE pressure from magnet to outside, that means you have to build pressure.
First of all STOP opening the yellow ball valve, you are wasting time. You need to build pressure. Not release it!
How to build preassure? If you got a remote magnet monitor unit, turn on the BO heatear, and wait about 2 hours to reach about 69mbar (1.0 psig) Thats the nominal operating pressure.
Be carefull to not open any part of the magnet, cause the minimun pressure to ramp or he filling, is 35mbar, do not release more pressure. You can get into a big ice problem if air comes into magnet.
This is the only way to build pressure into the magnet, i suggest you to contact IGC or Philips to provide the RMMU to fix this asap.
Good luck!
to rate and post a comment