I have a problem that pops up every now and then that seems like it should be easily understandable and easy to fix.
I work on the 18 kw electric boiler that supplies steam to the steam room in one of the first athletic clubs in the USA. I have the steam pressure set for 5 psig on the boiler. I...
I installed two new identical Yaskawa VFD Model CIMR-P7U47P51B-107 to drive new identical 10 hp 480Vac 3ph motors. This was as simple an application of VFDs as you get. No network control, nothing unusual. The only problem I had was terminating the signal wires that connected the two units so...
I just received my copy of ASME PTC 4 2008 and was surprised to find it didn't include a short form for the so called abbreviated efficiency test like PTC 4.1 did.
Is the short form no longer used?
Where can I get a copy of the short form from PTC 4.1?
I can't find a good copy anywhere on the...
I just received my copy of ASME PTC 4 2008 and was surprised to find it didn't include a short form for the so called abbreviated efficiency test like PTC 4.1 did.
Is the short form no longer used?
Where can I get a copy of the short form from PTC 4.1?
I can't find a good copy anywhere on the...
Having spent 36 years in the boiler business I've seen a lot of sooted up boilers but I never gave a lot of thought to the soot distribution on the heating surfaces. But now I'm writing a book on packaged boilers and would like a better explanation than.. 'that's just the way it is."
I'm...
I'm starting a project to upgrade the control system on a 600 hp steam boiler. I could use AutoFlame but would prefer not to. I have no experience with Honeywell's ControLink system but it looks on paper to meet my needs.
Anyone with experience with the system?
Thanks
Steve
On several low mass copper finned boilers, the heat exchanger corrodes with a green exfoliate. Is this due to over heating or what other mechanism?
Thanks
My experience is mainly in high pressure steam boilers but am doing more and more with low pressure hydronic boilers. I have a MDM probe type low water cut off the is giving me fits. The low water cut off is tripping every hour or so. I cleaned the probe (it wasn't very dirty) but the problem...
I'm a boiler guy and not really up on VFDs.
I have a 3 HP standard induction motor driving a combustion air fan powered by a VFD. (This is all new equipment.) The VFD is powered by 208 Vac 1ph and the motor is 208 Vac 3ph. The name plate FLC of the motor is 8.6 amps. The VFD is programmed to...
I have a customer with two Teledyne Laars hot water heaters. They supply domestic hot water to a mental health facility and are 1,100,000 btu/hr input each. There is no storage tank in this system and domestic hot water is circulated through the building. The two heaters are piped in series and...
