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#24674 - 04/18/03 09:47 AM Power Plant lube oil problems  
rmiell  Offline
Member
Joined: Nov 2000
Posts: 242
La Junta, Co. USA
Our electric power plant has numerous lube oil heaters, tanks that have strip heaters surrounding them to keep the oil at around 160 degrees. I lost a control on one. Replaced it with another one which had a shorter cap tube. (old = 10", new = 4"). Now unit will not heat up oil before sensor senses top limit. Use infrared heat gun to test temp at cap tube, (which is mounted in a small metal tube welded to outside of inner tank, right next to heating elements), and it showed around 230 degrees.

Q1: Does the length of the cap tube need to be as long as the one I took out?

Unit is Hoffman-Allen brand. I can find no info on that company. They were in Springfield, Ill. when this unit was made, and installed in our plant, circa 1940.

Q2: Anyone have any links to them?

You can email me for any more info you need to help me with this problem.

TIA.

Rick Miell rmiell@hotmail.com


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#24675 - 04/18/03 04:35 PM Re: Power Plant lube oil problems  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Long shot — Does the new sensing bulb contact the bottom end of the well? There may be a remote chance of inadequate heat transfer if not.


#24676 - 04/18/03 07:04 PM Re: Power Plant lube oil problems  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,222
SI,New Zealand
Rick,
I reckon that the sensor is too close to the heater, just a thought.
Or you've got the wrong wattage element.


Let's face it, these days if you're not young, you're old - Red Green grin


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