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  1. Replies
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    Leak detection sucks sometimes. Use your eyes,...

    Leak detection sucks sometimes. Use your eyes, your brain, an electronic detector, and bubbles. When all of that fails, inject UV dye and let the system run a couple of weeks. Come back with a UV...
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    I am the OP. :yes:

    I am the OP. :yes:
  3. Replies
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    2,772

    I've actually got one. Filled with Mercury. It...

    I've actually got one. Filled with Mercury. It has 4 tubes for synchronizing carbs on a motorcycle. Thanks for the idea!
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    Everything looks nice, neat, and professional. I...

    Everything looks nice, neat, and professional. I would be proud.
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    How do you test a micron gauge?

    I've been using an analog Thermal Engineering micron gauge for years. The readings are reasonable for what I'm doing, and I've never had an issue with a system after servicing due to improper...
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    One more thing. If you have the cardboard back...

    One more thing. If you have the cardboard back off of the unit, it might not cool right. On a lot of those residential refrigerators, the back needs to be in place to route the air properly over the...
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    Yeah, the name of the door manufacturer will...

    Yeah, the name of the door manufacturer will allow you to look up a manual to get the adjustment procedure. The model number plate is normally located inside on the door frame on one of the ends.
    ...
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    No, I could see light through the coils and water...

    No, I could see light through the coils and water penetrated, so I figured I didn't need to. At the end of the day, the pressures were spot on perfect.
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    X2 Existing insulation is probably water...

    X2

    Existing insulation is probably water logged and useless. A good insulation job should fix the problem.
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    High head. Overcharge.

    5 ton carrier rooftop, R22, on a bar. Owner has had issues for years and had 5 other techs work on unit during that time.

    80 degree ambient, 65psi low side. High side creeping up to 350. Owner...
  11. Wow. Dollar General's management company called...

    Wow. Dollar General's management company called us last week. At first, I was interested, then read the contract. Sent them an email saying I don't think working for them is in our best interests.
    ...
  12. Also, you might consider moving the thermostat to...

    Also, you might consider moving the thermostat to a different location where it is easier to pull new wire.
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    674

    Hrdworkingacguy, can you point me in the...

    Hrdworkingacguy, can you point me in the direction of a source?
  14. Replies
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    674

    Need to get a room down to -40F

    OK, Got a customer who does testing on building materials... Determining R-Values, etc.

    They called and want to build a testing "room" that holds -40F inside. The room dimensions are 8'h X 4'w X...
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    It's feeding a sauna with electric elements.

    It's feeding a sauna with electric elements.
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    2,327

    All inspectors work for the state here. He has...

    All inspectors work for the state here. He has #10 wire on a 40amp breaker. Had 120v circuits on double pole breakers. Doubled up 2 circuits on one single pole breaker.

    I've got a new 200amp...
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    2,327

    State Electrical Inspector Wired This

    I bought my house from a MN state electrical inspector last year. He wired the house himself.602121
  18. Replies
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    5,139

    You could strap empty refrigerant containers to...

    You could strap empty refrigerant containers to the units. Then they could float.
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    I've worked with A-coils all my life, but rarely...

    I've worked with A-coils all my life, but rarely get to work on a P-coil. You are very lucky!
  20. Replies
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    5,215

    Just a shot in the dark, but is it possible to...

    Just a shot in the dark, but is it possible to size up the cap tube and change the length? I don't understand how it can be getting plugged with a new filter/dryer.
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    Along with great tech support, Mitsubishi has the...

    Along with great tech support, Mitsubishi has the best online support, troubleshooting, and documentation. www.mylinkdrive.com
  22. Replies
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    The OP stated that the system has always...

    The OP stated that the system has always performed well in the past, but now won't achieve set point. So, what has changed?

    Unless someone snuck some extra 410a in there, or changed the office,...
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    ABM-100 from aabsmart.com is awesome. It plugs in...

    ABM-100 from aabsmart.com is awesome. It plugs in to your smart phone and with the free app, you get great data with the ability to save data points. Around 50 bucks, if I remember right.

    My...
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    Assuming you are talking about a residential...

    Assuming you are talking about a residential outdoor condensing unit. In my experience, aside from installation, those valves rarely get touched. If you are going to open the system for service, I...
  25. OK, I'm weird. In the winter, I keep my windows...

    OK, I'm weird. In the winter, I keep my windows in my bedroom cracked so the room stays at 50 or below. In the summer, I have my A/C at 60. It's a little uncomfortable, but I can live with sleeping...
  26. New condensing unit, new evaporator, new...

    New condensing unit, new evaporator, new pipes..... New customer for life.
  27. Replies
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    I haven't used an electronic leak detector for...

    I haven't used an electronic leak detector for about 10 years. Had some Tiff detectors, but got so many false positives (foam off gassing, bad breath, etc) that I just quit using them. I've been...
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    Probably 2, but I'd call them and ask. Their...

    Probably 2, but I'd call them and ask. Their customer service is second to none.
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    I agree that sealing the box is the first step,...

    I agree that sealing the box is the first step, but a close second is to install a KE2Therm Evaporator Efficiency Controller. www.ke2therm.com

    Every one I've installed has been met with rave...
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    I've never had a problem putting an R134a...

    I've never had a problem putting an R134a compressor with POE oil in small cap tube systems. I do, however, flush the lines with RX-11 and install a new filter, of course. Pull a good vacuum, and...
  31. Yes, I think it was a great deal, and no, it...

    Yes, I think it was a great deal, and no, it doesn't open up to the 2-⅝" anymore. That's OK because I rarely work on suction lines that large. Typically ⅝" to 1-⅜".
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    The take offs should be from the side of the...

    The take offs should be from the side of the plenum. Not the top.
  33. It was 20 years ago, my salesman came in to the...

    It was 20 years ago, my salesman came in to the shop and declared he had a new meter for me to buy. I told him to go away... I already have enough meters.

    He proceeded to thrown this digital...
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    Are you looking for fans for service work that...

    Are you looking for fans for service work that you can keep in inventory?

    I'm not familiar with the brands you mentioned. Up here in MN we use a lot of Lau fans. They work good.

    We clean up...
  35. Fluke 80PK10 pipe temp Probe hack/mod

    I got a great deal on a Fluke 179 with clamp ammeter and an 80PK10 pipe temp probe with a case off of eBay for $140.

    Everything looks like new and works great until I realize the 80PK10 is for 1"...
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    It's interesting that here in Minnesota (where it...

    It's interesting that here in Minnesota (where it gets plenty cold) I understand the Mall of America was designed with no heating system. The building is heated through occupancy, passive solar,...
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    Is that gas piping galvanized?

    Is that gas piping galvanized?
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    Been using lever benders for years. I still use...

    Been using lever benders for years. I still use them when there is lots of room, but sprung for a ratcheting bender last year.

    Bought a Hilmor and stripped out the gear within a month. Returned...
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    Going to be using a 17.5 foot Lund with an 85hp...

    Going to be using a 17.5 foot Lund with an 85hp motor.

    Looks like ammonia dog and kdr233 have some EXPENSIVE gear!
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    Service Boat Setup... ideas Needed

    OK. I live in an area where there are customers who are only accessible by boat or seaplane. I am trying to set up a system to run service calls from a boat.

    I'm talking residential refrigeration...
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    We've used the Vulkan Lokring system, which has...

    We've used the Vulkan Lokring system, which has no o-rings. It is a metal to metal system for joining pipe with no flame. It's expensive, but fast.

    The job required a 24 hour fire watch anytime a...
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    I injected UV dye in the system, used a black...

    I injected UV dye in the system, used a black light and found a tiny pinhole in the suction header of the evaperator coil. Not even a big enough hole to spray... I could wipe the dye off and the spot...
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    I've reluctantly tried it, and never had any...

    I've reluctantly tried it, and never had any pressure or restriction problems, but only a 50% success rate in fixing the leak. In one case, the Easy Seal didn't fix the leak and I finally found it...
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    Carry all day, every day. Better to have it and...

    Carry all day, every day. Better to have it and not need it than to need it and not have it.
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    I totally love my N82 tuckable concealed carry...

    I totally love my N82 tuckable concealed carry holster. It is amazingly comfortable, and I can have my uniform shirt tucked in around it. I've asked family and friends to look and see if they think I...
  46. It won't turn into a small Evaperator, as there...

    It won't turn into a small Evaperator, as there is no metering device (cap tube or expansion valve) ahead of the filter/dryer. Depending on the system, you may or may not have to increase the...
  47. Don't use a filter/dryer, and unless you don't...

    Don't use a filter/dryer, and unless you don't trust your micron guage, don't do a triple evac. Evacuate to a good, deep vacuum (200 microns or less) and start it up.
  48. Thread: Scotsman

    by GenesisRefrig
    Replies
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    592

    Make sure the sensors are lined up correctly and...

    Make sure the sensors are lined up correctly and seated in place. If they are, it Sounds like the controller is bad. Pretty simple, you've got sensors and a controller. If sensors are good and bin...
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    Agreed about adding liquid. It all depends on the...

    Agreed about adding liquid. It all depends on the situation like josmith said. On large systems (like a parallel rack system) with a suction accumulator, I'll dump liquid, full bore upstream of the...
  50. Do it all the time. Change to a compressor with...

    Do it all the time. Change to a compressor with POE oil, change filter/dryer (duh), evacuate good, and charge with 134a. Never had a problem
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