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  1. I have all the parts to build build a gantry out...

    I have all the parts to build build a gantry out of unistrut whatever size and configuration I need.

    Have a trolly that rides in the strut groove and welded 90*ís for the leg bracing.
  2. Thereís some threads about it in tools and test...

    Thereís some threads about it in tools and test equipment forum. I believe there is a warranty recall.
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    I change mine when they start to look dirty, OR...

    I change mine when they start to look dirty, OR if I think they've gotten wet. I keep packs of them, so i'm fairly liberal with changes....cheap insurance to protect your meter.
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    I wonder if they were evacuated with the rest of...

    I wonder if they were evacuated with the rest of the system then!? LOL!!
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    plus, when you call your local parts...

    plus, when you call your local parts center......if you provide the correct serial number and they order the wrong part, it's on them, not you.

    If I have a part number, I give it to them, but...
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    on critical applications, it's very handy to have...

    on critical applications, it's very handy to have the bypass. most people forget to add ports to pump the refrigerant from the shell to the line on the other side of the valve though.....

    also,...
  7. yeah, may just be contrast setting.

    yeah, may just be contrast setting.
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    just select a brand, and call the manufacturer. ...

    just select a brand, and call the manufacturer. they will size a unit for your specifications.
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    if it has orifice headers, they are likely...

    if it has orifice headers, they are likely plugged up.

    prolly is overcharged too.....most people see low suction and add charge to bring it up without thinking about why it's low.
  10. I second the reheat idea.....it should have one....

    I second the reheat idea.....it should have one.

    also, if you work with dehumidifiers, it's the same principal....just mechanical instead of desiccant.

    use your psychrometer to get your process...
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    even a broken clock is right twice a day!:whistle:

    even a broken clock is right twice a day!:whistle:
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    not sure that would be called crankcase...

    not sure that would be called crankcase superheat......you're really attempting to measure oil temperature, to be sure it doesn't contain liquid refrigerant. it's more of a differential measurement....
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    there are regulations that dictate safe working...

    there are regulations that dictate safe working hours. any company that follows OSHA regulations absolutely will not allow more than a 16 hour work day.....in fact, you could be fired for working...
  14. Model number? Operating log?

    Model number?

    Operating log?
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    I thought so too....it was a standard coil unit. ...

    I thought so too....it was a standard coil unit. Didnít even look at seer rating, couldnít have been much higher than 13.

    I measured all the line sets, got outdoor and indoor unit capacities and...
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    If you use the general rule of thumb of 1,000...

    If you use the general rule of thumb of 1,000 ohms per volt, youíre still above that.

    Many things can affect a megaohm reading, including the amount of refrigerant or moisture in the windings,...
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    I've had 2 FP meters not read voltage over 8-10...

    I've had 2 FP meters not read voltage over 8-10 years of using them.

    really I'm glad it happened, as it has forced me to never trust any meter. Now I frequently check my meter on a known voltage...
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    lots of pumps will lose oil to the system with a...

    lots of pumps will lose oil to the system with a power loss. no reason to junk the pump....it's normal.
  19. double post

    double post
  20. what he said. also, if you have a basic single...

    what he said.

    also, if you have a basic single loop, then your bypass needs to be sized to maintain the minimum flow requirements for the chiller.

    if you have a primary / secondary system, the...
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    Why not install a manual reset low pressure...

    Why not install a manual reset low pressure switch in the true suction line?

    If youíre reaching that low of an ambient, you need some condenser coil baffles, or other wind protection also.
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    I worked on a small (7.5 ton) split heat pump a...

    I worked on a small (7.5 ton) split heat pump a few weeks back. The manufacturer provided several charging methods. One was approach, which was saturated temp. and ENTERING air temp.

    They wanted...
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    That 1,000 hours is based on exposure limits. ...

    That 1,000 hours is based on exposure limits.

    It will last longer at lower than rated PPM exposure.....or last less at higher than rated PPM exposure.
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    Are we going to get a follow up?

    Are we going to get a follow up?
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    Also, sizing of chillers should be based on usage...

    Also, sizing of chillers should be based on usage for the load. If you design a system that will have a chiller running nearly fully loaded for a large percentage of run times, youíre better...
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    Wrong sized orifice. Research the correct...

    Wrong sized orifice.

    Research the correct piston size for the condenser you installed.
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    Wait til you get something like a corner grounded...

    Wait til you get something like a corner grounded Delta. 480 between all phases, zero volts from phase B to ground.
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    that's a tough braze, very hard to get the steel...

    that's a tough braze, very hard to get the steel hot enough without melting the copper! Good job!
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    isn't that just reinventing the wheel? what...

    isn't that just reinventing the wheel?

    what if he does all that, and finds out there is a problem external to the machine causing it?

    "oh, sorry Mr. Customer, I know you just paid me $10,000...
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    why did they manufacture the risers fit the round...

    why did they manufacture the risers fit the round hole on the bottom of the pad?:whistle:
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    Prolly gonna be tough on that one. Cool coil...

    Prolly gonna be tough on that one.

    Cool coil has a great idea with ceiling cassettes. Some line set, some 2x2 drop ins, figure out what to do with condensate, and youíre done!
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    Iíve got a 30lb cylinder that either has a hole...

    Iíve got a 30lb cylinder that either has a hole or broken tube. I canít get the bottom 4Ē of liquid out. Have to turn it over to get all of it.

    I donít think any of them have a stub on the gas...
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    Youíre gonna have a really hard time getting the...

    Youíre gonna have a really hard time getting the airflow down that length, unless you could fill the entire drop ceiling space with duct, and narrow it as you go out. Or maybe shoot a high static...
  34. The OP may have departed, but itís his loss. ...

    The OP may have departed, but itís his loss. This happens a lot on this site. Someone posts with an expectation of validation of their point of view. When that expectation isnít reached, there is...
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    Tank heaters arenít really that expensive, and...

    Tank heaters arenít really that expensive, and they have thermal safeties/limits that wonít allow the tank to get too hot.

    You donít want to blow a rupture disk or relief on a cylinder.

    Plus...
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    shoot remanworld a message to have him check this...

    shoot remanworld a message to have him check this thread.
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    I would be curious what the compressor body temps...

    I would be curious what the compressor body temps are. If itís above 100* around the oil sump, I would question return gas density.
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    remanworld could identify if the plates and...

    remanworld could identify if the plates and valves are correct for your compressor.

    with broken discharge valves, I would expect to see lower discharge temps, not higher, as you are not...
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    I could accept everything you say if you would...

    I could accept everything you say if you would just answer my question.....are you or are you not our previously banned ďguruĒ?

    If not than, thatís great! If you are, then I still have zero...
  40. I would run prefilters, maybe just roll media,...

    I would run prefilters, maybe just roll media, and bag filters.
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    a better question would be to ask him how to...

    a better question would be to ask him how to measure Discharge Superheat........his head will prolly explode!
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    interesting. the theory could by tested by...

    interesting. the theory could by tested by removing the OAS and connecting a resistor with an appropriate value to make the unit think it's hot enough to run the fan.
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    sometimes stopping complaints is what we have to...

    sometimes stopping complaints is what we have to do.....right or wrong.

    like pecmsg said, that unit was making up all the air that is lost through the hoods. so you may have created another...
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    the K4 relay is soldered to the control board? or...

    the K4 relay is soldered to the control board? or is it mounted in the control panel?
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    So youíre running the unit into the...

    So youíre running the unit into the ground......and itís screaming ďhelp me!lĒ

    A sensor is out of range, and the system is telling you that. Look at the display to figure out which one is Reading...
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    Yeah, really it is a 4-5 man job.....I thought...

    Yeah, really it is a 4-5 man job.....I thought you were pushing for 2 guys, figured Iíd bump you a little! LOL!!
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    You never answered me before when I asked if that...

    You never answered me before when I asked if that was you Noguru....as I said before, you have the same shitty attitude as the previously banned douch.

    So I ask again....is that you?
  48. Thread: York rtu help

    by 71CHOPS
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    Thereís a terminal at the top of the RTU control...

    Thereís a terminal at the top of the RTU control board that needs to have 24v all the time...i donít remember the designation, it might be the limit terminal.

    If you have pro status, thereís...
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    Obviously Freeze damage.... Either the piping...

    Obviously Freeze damage....

    Either the piping wasnít completely drained, or water got into the piping after it was drained.
  50. Thread: York rtu help

    by 71CHOPS
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    If you have an open limit, the unit will lock out...

    If you have an open limit, the unit will lock out in cooling also.
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