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Type: Posts; User: mike_meridian

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  1. Tech School, General Maintenance, HVAC.

    After a layoff I entered HVAC/R training at a State Tech. School. Spent 2 years in the field as helper/newbie. Hired as general maintenance worker at health care facility, worked for 6 years and now...
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    no leak, but

    I couldn't find a leak, so I evacuated it down and charged it with about 14 oz of r-22, (it holds 21 oz of 502). I planned on adding the rest after start up.

    It has CRO so I didn't think I have...
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    no defrost timer

    oh yeah,

    The defrost timer is gone.

    I am going to work on it again tomorrow (Sat). I don't even know where the leak is, but hopefully I'll make some progress.

    This is all out of my...
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    true model t-49f

    Thanks for all the replies.

    I didn't get the compressor #, but here is the box

    http://www.globeequipment.com/library/specsheets/True_T-49F-4.pdf

    Thanks for the warnings, but the equipment is...
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    22 in a 502 system

    Reach in freezer. 21oz 502 charge. Empty.

    This is a charity. Drug rehab. Want to turn their reach in freezer to a refrigerator. Currently it is not working, being used as a cupboard. I...
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    thanks for the tips 51fitter. It might have been...

    thanks for the tips 51fitter. It might have been slanted, if so what you said makes sense. Unfortunately I never heard anything else about it, if so they probably called someone else. Can't blame...
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    I did not get the call back, so I do not know the...

    I did not get the call back, so I do not know the outcome. I was asking you saltys, just in case I got the call, so that with some direction I wouldn't be standing there scratching my head. I...
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    Thanks again for all the help. I am a new...

    Thanks again for all the help.

    I am a new tech. and therefore I get residential routine maintenances, help installers, and will assist the more senior techs. I am not sure whether I will be...
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    recap your recap

    Ok, I think that I follow you, although I am not 100% on some of your terms.

    P-trap immed. after coil drain outlet. Followed by a tee. One end up and open the other down and conneccted to the...
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    The fan is the last component. The coil and...

    The fan is the last component. The coil and drain are under negative pressure.

    The cail and drain are pretty straight forward. about 3 by 6 ft plane. Drain coming straight out the side.

    The...
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    I suppose it is a dx. It is a r-22 to air coil. ...

    I suppose it is a dx. It is a r-22 to air coil. Ther are no outside dampers. The return is a plenum and grill and filters on one side, and a supply is a plenum and grill on the other side. It...
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    Large Condensate Leak on AH

    I see mostly residential stuff, but there is a large AH (to me anyway) that is leaking condensate from the middle of the unit. The unit is less than 3 years old, so I wouldn't think that the e-coil...
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    struggling with control voltage

    Hi,
    Just started doing service calls a couple of weeks ago. I'm taking to long in most things but I have struggled a couple of times in some calls involving Gas pack. service board/ t-stat...
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    Where is the line drawn between pro and regular...

    Where is the line drawn between pro and regular forum? What are the requirements for the pro forum?

    Thanks,

    Mike
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    charging cheat chart

    I try to check charges with the superheat /subcooling charts, but when a package unit does not provide reasonable access I will use those manufacturers charts that graphs suction and head pressure...
  16. I recently bought $200-300. I would buy again. ...

    I recently bought $200-300. I would buy again.

    Mike
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    Thanks for all the good tips. Mike

    Thanks for all the good tips.

    Mike
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    hunting

    What about txv "hunting". I might have mistaken it for something else. When superheat starts fluctuating from like 3 to 15 degrees.

    Thanks again,

    Mike
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    I must see mostly furnaces with cooling coil...

    I must see mostly furnaces with cooling coil because they are upflow with the fan on the bottom with a coil added on top, but sometimes in the cabinet.

    Would a horizontal unit in the attic or...
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    It is usually a remote gas furnace, with a coil...

    It is usually a remote gas furnace, with a coil on top.

    I use the terms AH and remote furnace interchangeably. Is this wrong too?

    Thanks,

    Mike
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    TXV surprise

    Is there anyway you can tell from the nameplate or other furnace characteristics that will let you know if the metering device is a txv or fixed metering device, without actually seeing the metering...
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    Static pressure breakdown

    I have been using a magnehelic gage to measure static across furnaces and comparing it to the nameplate to divine the condition of that hard to get to coil.

    Sometimes the negative portion of the...
  23. IDF clunks on energize and deeneergize

    New tech here. Changed out my first board the other day in a York gas pack. Then I cleaned both coils and when I went to turn on the fan there is a clunk when it starts up and shuts off.

    It came...
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    how do you clean condensate drains?

    What is the best way to clean the 3/4" pvc condensate drains on airhandlers.

    Shopvac?
    Nitrogen?
    snake?

    Thanks,

    Mike
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    I definitely need to ignore the beep and read the...

    I definitely need to ignore the beep and read the dang thing.

    Been a good post for me, I will definitely pay more attention to grounding, I will also warn the home owner. He is not a...
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    Thanks again for the replies. I was so focused...

    Thanks again for the replies. I was so focused on whether I diagnosed the compressor windings correctly, that I wasn't considering that If there was no path, or bad, ground that some unlucky soul...
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    Thanks for the helpful feedback. There is only a...

    Thanks for the helpful feedback. There is only a 30 amp breaker, no fuses. The compressor is out of comission, I was just double checking it. I checked it at the compressor terminals. There were...
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    grounded compressor

    I came across a compressor that windings were shorted to the shell, yet it did not trip the breaker.

    Is this common?

    I cant remember the ohm reading. It may have been 3-4 ohms, cant...
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    magnehelic and dirty evap

    I bought a 1" wc magnehelic to check hard to get to evap coils to determine whether I need to clean them. Would you go by the max. external static pressure on the label plus a tenth or three?
    ...
  30. Thread: my van

    by mike_meridian
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    purdy

    purdy
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    nice set up

    I like that set-up and have contemplated getting one like it, but help me out here. The vac. tree has 3/8" hoses and the system has 1/4" male flares. Do you use a 3/8 to 1/4 adapter? and would...
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    dwayne allman

    dwayne allman
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    The popular gas pressure test kits have a scale...

    The popular gas pressure test kits have a scale form 0-35"wc. Residental and light commercial use NG or LP with 3.5 and 11"wc.



    Why does the scale go all the way up to 35"wc? Is it for...
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    thanks again for all the replies. Price? I...

    thanks again for all the replies.

    Price?

    I paid $160 with spipping.

    Why would anyone take a chance on buying tools like that on E-bay?

    Unemployed, student, hope to replace if needed...
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    oil level should be ok, I just filled it to the...

    oil level should be ok, I just filled it to the line in the window.

    I have a yellow jacket digital vacuum gauge, off ebay also which I am also trying out, it seems to be doing fine. It is solid...
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    Yes, I put in new oil. What I didn't do is...

    Yes, I put in new oil.

    What I didn't do is leak check my gauges. They are pretty new, but I guess that doesn't mean there isn't a leak. I might valve it off and cut off the pump and see how...
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    I bought a refurbished 6 cfm vacuum off ebay. It...

    I bought a refurbished 6 cfm vacuum off ebay. It claims to pull down to a 50 microns, but with no specifics. I didn't have a system to try it on so i'm just trying it out on a recovery tank. It...
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    That's a good question. I was just thinking of...

    That's a good question. I was just thinking of getting the lowest and quikest vacuum. Once you achieve the vacuum you want, do you just let it go back to atmosphere, or I suppose you use the...
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    I just bought a vacuum pump. I called around to...

    I just bought a vacuum pump. I called around to local supply houses to see if thet had any evacuation manifolds, 3/8" hoses, and vacuum/charge valve & core tools. Neither had the evac. manifold...
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    I don't know when the murray plant stopped making...

    I don't know when the murray plant stopped making bicycles. They recently had been making lawn mowers, bought out by chinese company. The plant is suppose to be closing here real soon. I am a...
  41. Hi, I am currently in tech school and...

    Hi,

    I am currently in tech school and acquiring tools here and there. The 3 places I generally look are the suuply house, onine warehouses, and ebay.

    Ideally, I would like to buy everything...
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