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  • A stumper for the HVAC technicians?

    Maintenance & Repairs - 8 hours ago

    Additional Details

    So I'm in an HVAC class. My lab was a unit change out. Everything was going smooth and easy, until I tried to raise the head pressure to 278 psig. The first time I got my head pressure up around 278 psig. While measuring my subcool(which was fluttering around 20 degrees) the high pressure switch cut out. After that It cut out at around 160psig. I bypassed the hi/lo pressure switches, because they kept tripping, and raised head pressure to 200 psig. Above that and the compressor cuts out while the condenser fan keeps blowing. I weighed in the charge of 5.8 lbs of R-22, like the label on the unit called for, if anything it is overcharged. I pulled a triple evac. It is not on me yet to troubleshoot this unit, but I hate failure. This one has two of my instructors suspecting different causes; bad compressor or undercharge. Any ideas? To raise the head pressure, we wrap the coils with plastic and limit airflow. I say it is overcharged because 5.8 lbs is a complete charge with 25' of lineset. This unit has approximately 19' of lineset. The evap coil was not replaced with the condenser. The TXV works fine, it maintains 10 degrees superheat. I think I got everything. The filter drier is just a standard issue. About the size of an orange. The sight glass has a few stray bubbles, which I have received mixed information on. A short time instructor said a proper charge should show no bubbles, another instructor said a proper charge would show some bubbles. The subcool number does show an undercharge...either a coolant loss or I had the scale set to kilos? I think it was a potential relay. All those little black boxes look the same, and I could not see the wiring diagram without removing it from the unit. discharge temp. was around 85-110, the higher number with higher pressure. hermetic, scroll, 208 volt, high temp, used residential unit. We have dozens of A/C's, I swapped out a 13 SEER unit for an antique 12 SEER Rheem. I don't remember the amp draw, but it did increase as pressure rose. This problem developed near the end of the day. So we didn't have time to start troubleshooting. School is closed till Monday, but I have been pondering this since last night. From the questions you have led me with, I tend to suspect the compressor. The compressor was extremely hot to the touch. I think it was a potential relay. I could not read the schematic on it. I admit I am a rookie with no practical field experience. evap pressure stays steady at 70 psig. The pressure rises to around 80 psig when head pressure is forced up to 200 psig.
  • need help with upholstery fabric?? advice?

    Decorating & Remodeling - 12 hours ago

    Additional Details

    I'm buying fabric for my couches and I wanted to know if a blend of wool and polyester would be a good fabric.. I want something that is colour durable, easy to clean and would last a long time.. OH and something that wont lint up when i put it in the wash.. if anyone knows of such fabric please let me know.. thanks in advance
  • Drywalling question(gaps and jagged sheetrock).?

    Do It Yourself (DIY) - 14 hours ago

    Additional Details

    I'm not sure if I make sense to you, this is hard to explain. Basically there is a hole or groove about a inch deep in the sheetrock where he failed to snap the board clean. The grove is located in the middle on the ending. Now when I tape over this I can sorta see that I'm taping over a hole in a wall. I feel like this is not the proper way to do it and it can easy be "punched" through later on. What can I do to fix this gap so I can tape over something solider and the paste?
  • How do I clean my UGG's?

    Cleaning & Laundry - 16 hours ago

    Additional Details

    I always wear them without socks because they are so warm and fluffy inside so Im thinking I should clean them, can they go in the washing machine and the dryer?
  • Can I let carpet deodorizer sit overnight?

    Cleaning & Laundry - 17 hours ago

    Additional Details

  • how do you measure cleanliness?

    Cleaning & Laundry - 17 hours ago

    Additional Details

    I have a science fair project and for the research paper my teacher wants me to say how i would measure cleanliness... like from somebody else' project. Please leave a source
  • Are GE front load washing machines supposed to pause?

    Cleaning & Laundry - 17 hours ago

    Additional Details

    It pauses for about 3 sec about every minute during the washing.
  • How do i get white out of blue jeans?

    Cleaning & Laundry - 18 hours ago

    Additional Details

    My friend splattered a bottle of white out all over my pants. I don't have time or the money to buy WD-40 Is there any good around the house items i can use?
  • My water heater wont keep heating after a few minutes it shuts off?

    Maintenance & Repairs - 19 hours ago

    Additional Details

    It is an American 30 gallon about 5 years old and operates on natural gas is this something I can fix myself ? Thanks in advance
  • framing metal studs and drywall?

    Decorating & Remodeling - 19 hours ago

    Additional Details

    someone knows who is hiring.i do framing metal stud,drywall,& T bar suspended ceiling and also i have my own laser for T bar ceiling i have more than 10 years experience i am available in east wenatche wash. thanks

How to hire a contractor

8 things you need to know before hiring your contractor

By Christy Wright

Thinking of doing a home reno? Here are eight things you need to know before hiring your contractor:

1. Get at least three references for the contractor you think you want to hire and thoroughly check all of them.

2. Make sure your contractor, and his sub-contractors, are properly licensed and insured; ask to see his and his sub-contractors insurance forms and ask a lawyer or your insurance company to confirm their accuracy and what's covered.

3. Ask him about the last project he worked on and request a visit to speak with the homeowners.

4. Visit his place of business to make sure it's reputable. Does he have a professional office or do business out of his truck or home? Is he registered with local business associations and/or the Better Business Bureau?

5. Ensure that you have a signed contract outlining every job the contractor will do, how long it will take and how much it will cost. Contractors may not wish to commit to projects in writing, but you must insist on this. Itemized costs are also important so you know how the total amount is determined and can also set aside a small amount for contingencies.

6. Work out a payment plan that you both agree to.

7. Keep track of the job as it progresses, making him aware of any jobs not done to your satisfaction or any damage he may have caused (scratched floors, stained bricks, etc). Discuss these issues before final payment.

8. Contact online resources. Homestars.ca is a website where homeowners across Canada give unbiased reviews of their contractors - invaluable!

What's your decorating style? Find out how to make your personal style work in your home.

First published in Chatelaine.com's November 2006 issue.
© Rogers Publishing Ltd.

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