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Free bldg systems training

tdontig — Tue, 07 Sep 2010 13:29:04 GMT

Mechanical Systems Training

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www.what-is-hvac.com is a free website, which provides building operations and mechanical systems information, which can be used for training purposes.

If you are in need of a competitive price for HVAC products or building supplies, this site can direct suppliers to you to provide quotes for such. This saves locating individual suppliers, and requesting quotes.

If you have a mechanical systems problem and need help, I will provide an answer or opinion for you, free of charge.

If you find this website of value, it would be appreciated if you could bookmark and share with your peers.

The information is presented in layman terms and is easily understood.

The information is pertinent internationally and should be of interest to your:
Commissioning agents
Facility managers
Maintenance supervisors
Maintenance team leaders
Tenant service coordinators
Technicians
Tradesmen

For no cost:
Use the site information to develop training courses to be presented by a training person.
Use the site as a template to develop online training modules.
Use the site as reference information source.

Would you like to:
Advertise on my website.
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Exchange website links?

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http://www.what-is-hvac.com/"> HVAC for Beginners , An information source explaining building mechanical systems.

If interested, give me a short caption, your website address or the appropriate HTML code and pick a page on my website.

If further discussion is desired please contact me.

Thanks

Tom Dontigny
261 John St North
Arnprior, Ontario, Canada
K7S 2P3
Phone 613 623 2755
Email tdontig@sympatico.ca

Other sites:
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OSHA versus Paramount

didmac0 — Fri, 03 Sep 2010 04:43:14 GMT

This is a really interesting case. Judges will rule in favor of the contractor and it's sometimes because of a misinterpretation of the standard being applied to fine the contractor.

In this case it appears that the inspector had absolutely no clue about the industry, pieced together some information she might have been spoon fed by her co inspectors or from the contractor, and came up with her decision.

When a business's reputation is on line, you have to fight an injustice, but how many small or mid size contractors can afford to do that?

I'm glad Paramount did.

Electrical safety at work

JackClay — Wed, 01 Sep 2010 12:25:18 GMT

Hi,

Electricity kills and injures people. Around 1000 electrical accidents at work are reported to HSE each year and about 25 people die of their injuries.

Many deaths and injuries arise from:

# Work near overhead power lines.
# Mains electricity supplies (230 volt).
# Use of poorly maintained electrical equipment.
# Contact with underground power cables during excavation work.
# Use of unsuitable electrical equipment in explosive areas such as car paint spraying booths.

Fires started by poor electrical installations and faulty electrical appliances cause many additional deaths and injuries.

Why Maintenance is so important for air conditioning as well as heating equipment?

JackClay — Tue, 31 Aug 2010 11:51:43 GMT

Hi,

Preventive maintenance is essential to the proper functioning of air conditioning and heating equipment. Generally companies inspections each year. During these inspections, proper operation of the equipment is checked and verified.and if any part should be not able to work more. It is quickly replaced. If preventive maintenance is not performed regularly or if it is done haphazardly, the equipment will require extensive and costly repairs at a later date that is sooner than it should be.Your best insurance against HVAC failure and cost containment is equipment preventive maintenance.

geoexchange anyone?

thewellguy — Sun, 29 Aug 2010 23:53:50 GMT

Are there any South Carolina HVAC contractors that may be looking for a ground loop contractor for their geothermal installs? I am currently a water well driller living in another state. I have a valid South Carolina drilling license and have an IGSHPA installers certification. I would like to get out of the water well business altogether and do vertical ground loop installations exclusively. Before making the jump I want to be sure there is a need for ground loop installers.

ANYTHING UNATTEMPTED REMAINS IMPOSSIBLE

geoexchange anyone?

thewellguy — Sun, 29 Aug 2010 20:28:29 GMT

Are there any South Carolina HVAC contractors that may be looking for a ground loop contractor for their geothermal installs. I am currently a water well driller in another state. I have a valid S.C. drillers license and have a IGSHPA installers certification. I would like to get out of the water well business altogether and do vertical ground loops exclusively. Before making the jump I want to be sure there is a residential market and the need for ground loop installers exist.

ANYTHING UNATTEMPTED REMAINS IMPOSSIBLE

Hi To All

jackdalson — Wed, 25 Aug 2010 05:14:41 GMT

Hi Friends,

I am new here and this is my first post. I hope I will be good friends of yours.

Service Magic

heating_seattle — Fri, 20 Aug 2010 06:36:36 GMT

Anyone have luck with service magic? It seems like since the economy went downhill service magic followed. I probably get 1 out of 10 install leads now:sad: My sales routine is good, I always do a manual J and I'm very thorough. Most of the leads are foreigners and those are always a bust, and the rest of them are looking for hackers to slam equipment in at cost. I think I need to find some new lead sources.

410a accident...

heating_seattle — Fri, 20 Aug 2010 06:23:26 GMT

I was replacing a coil in the attic of a 1.4 million dollar house when I had a little accident... I pumped all the refrigerant back to the compressor and made sure there was no pressure in the lines, then I attempted to sweat the connections off the coil. The liquid line popped off with no issue as its done 1000 times before, the suction line on the other hand turned into a flame thrower... It shot fire out about 3' into this attic and did not stop for about 10 seconds. I was freaking out trying to put this bitch out. I got the flame to stop coming out of the line and then used the extinguisher to put out the oil fire that developed on the platform. I'm not sure why this happened, I have sweat off fittings after pumping down and making sure its at 0 psi many times before and at most I got a little poof. Needless to say I learned a valuable lesson, always cut lines on an existing system. So while I was frantically trying to put this fire out I took about 5 breaths of the burnt 410a fumes, this stuff is nasty... I am wondering if youguys know how toxic burnt 410a is? About 12 hrs later I went into some sort of allergic fit, I sneezed about 100 times in a 5 min period then my eyes became swollen shut. It took about 12 hrs for the swelling to go away completely. I cant be sure that the two incidents are related but I'm inclined to think so.

york fan blowing direction

jacob1234 — Fri, 20 Aug 2010 03:51:47 GMT

I am a newbie and not an expert
My two story home has (2500sq.ft) two ac units
The smaller unit is tripping the breaker
Wired breaker to an unused(same rating) one still trips
measured capacitor,it is okay .5ufd, 45ufd(two in one)
To isolate the problem further. Is it ok to power the fan compessor seperatley?
How long I can run cpompessor witout the fan on top of it?
I took apart the fan(incudig blades, rotor) and put it back together.No the the way air blowing out in ths unit and the bigger unit is different.In the bogger unit air is bowing stright out (90deg vertical) through the grill. In the smaller unit(i just put it back together) air is is coming out like in a 30deg angle area through the grill. Don't feel a lot of air movemnent in the 90deg area.Did I do anything wrong?or this is normal?
Yours comments appreciated

Carrier Evaporator Headers

superheat — Fri, 13 Aug 2010 23:52:45 GMT

We have recently experienced alot of plugged evaporator headers in Carrier rooftop package units (5 to 12 ton) that are approximately 7 to 10 years old. Does know if there was any factory defect that is now surfacing or if Carrier has addressed the issue? Anyone out there experiencing the same thing?

Safety Hazards

didmac0 — Fri, 13 Aug 2010 11:46:12 GMT

Hello Friends,

I would like to share with you about Safety Hazards in OSHA. Safety in this section will deal with machine guarding, mechanical power transmission systems, electrical safety, power and hand tools, working and walking surfaces, trip and fall hazards, ladders, scaffolds, and other personal climbing and elevated support devices, look out and tag out procedures and so on.

Safety Hazards of using compressed gases, flammable or combustible materials, and other hazardous chemicals are discussed in the "Chemical and Materials" section. The section "Prevention and Control of Hazards" summarizes how to work safely with different classes of chemicals. Use the links in the sidebar to access more detailed, workplace-specific information regarding Safety Hazards.

Murray Woodgate aka; carnak or abby normal

RoBoTeq — Thu, 12 Aug 2010 15:02:04 GMT

Don't know if Murray posted on this site or not, but for those who may have conversed with Murray under his usernames carnak and/or abby normal, Murray has passed away last week at age 49.:sad:

Hey from NE Kansas

bshultz — Wed, 11 Aug 2010 03:02:00 GMT

Hi,

I am Brian from NE Kansas - home of the KSU Wildcats. I owned and operated a custom cabinet shop for 15 years, but between the economy and just plain burnout, I decided to try my hand at HVAC. My brother is still running the shop, but I'm on to more exciting adventures.

Despite the 120 degree occasional attics, I am loving it.

I have been reading the forum for some time now, and finally to decided to throw in my 2 coppers.

Looking forward to another great day of 100+ degrees.

Capacitor quandry

bshultz — Wed, 11 Aug 2010 02:55:07 GMT

Okay, so I am relatively new to hvac, and especially capacitors. Serviced a 3 ton High Efficiency Unit - variable speed fan on condenser. Fan was pulling 9 amps - rating says .8 so we (my boss and I) change it out 50uf+5uf but only have a 45uf+5uf in the van. Checked the amp reading again, fan is now pulling .8 amps and compressor 9 amps.

systems works great for 6 hours.

Went back at 7 pm, compressor runs, but fan won't. The capacitor is hot as a firecracker. We pulled it and changed it out with a 50uf+5uf (we picked one up later to keep in the van). Checked original new capacitor and it is fine. Flipped on unit and everything is back to normal. We monitored it for about 20 min. and everything is good to go.

2 Hours later - call, A/C quit working.

Planning on looking at the fan motor in the morning, possible replacement.

We are both a little stumped - any insight?