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  1. Finally found it. You unscrew it FROM THE TOP....

    Finally found it. You unscrew it FROM THE TOP. Left hand threads.
  2. On the smaller valves, yes and its entirely...

    On the smaller valves, yes and its entirely obvious. On this one there isn't room and the top of the rod is so far recessed in the actuator, you probably couldn't even if there were.

    Found a pic...
  3. Well with no tag on it, maybe its a V5011

    Well with no tag on it, maybe its a V5011
  4. Disassembling Honeywell VP512a actuator from valve; 1 ¼" & 1 ½"

    The larger VP512's are different from their smaller sisters and I can't figure out how to disconnect the bonnet button on the end of the shaft from the actuator.

    On the smaller valves you just...
  5. There are even low cost smart phone apps where...

    There are even low cost smart phone apps where you enter the data and it gives possible causes
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    Except that many of the cap nuts are thin and pop...

    Except that many of the cap nuts are thin and pop right thru when you turn them before the belt is even tight. Duh.
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    Bean counters rule

    We had an account for our region of a major retailer. They told us that we provided the lowest cost per store of any contractor east of the Mississippi because our quotes were dead on and the work...
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    Thank you very much. This is most likely the...

    Thank you very much.

    This is most likely the problem, as its the only part that has not been replaced. I will get a new card for Link 1. I suspected this might be the problem, but have not...
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    Link polarity has been checked and ruled out. ...

    Link polarity has been checked and ruled out. All polarity agrees. New components and wire have been tested from the BCU to individual TCI's including a new TCI not connected to the other units. ...
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    I have disconnected all TCI's, connected 3...

    I have disconnected all TCI's, connected 3 different TCI's one at a time via the existing wire and a new wire, including a new TCI incase all 14 existing TCI's were bad.

    Pretty much rules out...
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    Relative to sizing belts and sheeves for the...

    Relative to sizing belts and sheeves for the actual work ... I had a Mitsubishi Diesel pickup truck ... brake booster vacuum was a pump mounted on the back of the alternator; 5/8" wide belt ......
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    Have not tried reversing the polarity ... tested...

    Have not tried reversing the polarity ... tested with a meter, everything is correct on polarity according to the markings on the hardware.

    Is the link card one of the hardware pieces in one of...
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    Summit lost com with RTU's

    The original service call was for com loss to one RTU, while the owner's maintenance personel were attempting to resolve this, all 14 units went into com loss. The BCU still communicates with the...
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    I have the Browning belt tension tool. As other...

    I have the Browning belt tension tool. As other have noted, it almost always asks for more tension than most techs would use ... leads me to believe that the belt and bearing experts are saying that...
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    Yeah, that woks to cool the bottle, but if you...

    Yeah, that woks to cool the bottle, but if you use a coil in an icewaterf bucket, your tank will never be hot to begin with.

    My biggest "problem" has been over filling recovery tanks. Use your...
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    I don't really think you will get that much...

    I don't really think you will get that much gravity draining unless you use large diameter tubing.

    I have valves on both ends of my worm, if I have to, I can valve it off and move it to the other...
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    To fill the bottle you can use either port ......

    To fill the bottle you can use either port ... vapor or liquid is only in play when taking refrigerant from the bottle.
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    Unfortunately the egg shape of the bottle is the...

    Unfortunately the egg shape of the bottle is the hardest shape to cool the contents of ... that's why eggs are that shape.

    The length of tubing in ice water is the way to go.
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    You'd have to deal with pumping liquid thru the...

    You'd have to deal with pumping liquid thru the recovery machine. Not all of them can do liquid.

    To clear the liquid, remove the worm from the water ... also try to keep the coils top to bottom...
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    I used to do that ... it doesn't compare to a...

    I used to do that ... it doesn't compare to a coil of tubing in a bucket. Give it a try.
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    I made one a few years back and posted info here...

    I made one a few years back and posted info here on HVAC-talk.

    5 gallon plastic bucket, 50 ft of 1/4" tubing with flare nuts and valves on the ends.

    Just today I considered it can also be used...
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    Always pull from both sides

    Always pull from both sides
  23. Replies
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    If its under 1,000 I doubt you have moisture. ...

    If its under 1,000 I doubt you have moisture. Constant rise indicates a leak. You will have an initial rise after closing off your pump ... after the initial rise stabilizes that's when your blank...
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    usually the end of the flare is smashed over into...

    usually the end of the flare is smashed over into the hole by someone over tightening the cap ...

    If the core turns freely, I file a little off the end of the flare, just the part smashed in to...
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    There are manifold trees (yes I meant TREE) to...

    There are manifold trees (yes I meant TREE) to put at your pump that have valves for blanking off. I think Robinair and JB both make them in several styles.


    I haven't checked lately but there...
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    It would, but it would work even better if you...

    It would, but it would work even better if you went to 3/8 copper and a 3/8 x 3/8 x 1/2. Any size reduction or length is cap tube effect slowing down your evacuation ... has more affect than the...
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    I've been using the big black 3/8 with 1/4 end...

    I've been using the big black 3/8 with 1/4 end hoses about 30 years also. straight 3/8 on both ends between the manifold and pump. Had a special 3/8 flare by 1/8 pipe high flow fitting custom made...
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    I have found ultra sonic devices helpful at times...

    I have found ultra sonic devices helpful at times when other methods were failing, but I've had less success with it than with refrigerant detectors in general. The ultrasonic transmitter is not...
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    After you have done your best pressure leak test,...

    After you have done your best pressure leak test, a good vacuum gage can be the final test of system integrity.

    Static vacuum and not running vacuum is the real test.
  30. My understanding is that if it was hooked up...

    My understanding is that if it was hooked up before the electric meter, there would be significant savings. The real argument is between big users and utilities over whether this could/should be...
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    I had to replace a weak hsi earlier this week ......

    I had to replace a weak hsi earlier this week ... ohmed out at 140-145.

    Was giving us intermittent lockouts.
  32. In the past I have successfully dehydrated water...

    In the past I have successfully dehydrated water source heat pumps that had half a gallon of water in the compressor alone using the steps outlined above. I removed the compressor and blew out the...
  33. The only way to know if all the moisture has been...

    The only way to know if all the moisture has been removed is to use a micron gage. Not only should the reading be low, it should hold when the pump is valved off. In my experience water freezes and...
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    Depends on how tight the building is and whether...

    Depends on how tight the building is and whether there is venting for it somewhere. Some RTU's have barometric dampers for economizers, some shops have exhaust hoods for special welding, heating or...
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    Isn't Newark any part of New Castle county that...

    Isn't Newark any part of New Castle county that isn't in another town? ... Just kidding but it seems that way.

    I'm down in Annapolis
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    I have no idea, I am not in the loop on that ...

    I have no idea, I am not in the loop on that

    Frame 4 type unit, pretty sure it has an isolation valve, so I should be able to pump all the refrigerant into the low side and replace that sensor.
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    Same model chiller ... different building ... I...

    Same model chiller ... different building ... I have one with a bad oil sensor in the bottom of the separator. Do I have to recover the whole charge and oil to replace this sensor?

    I thought I saw...
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    Plastic body barometric pressure switch. They can...

    Plastic body barometric pressure switch. They can also have clogged filter switches. A clogged filter switch will have 2 hoses. One going to each side of the filter rack.
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    Its supposed to have been on order since the...

    Its supposed to have been on order since the beginning of this summer and hasn't shown up yet. Maybe someone is goofing on this ...
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    I've already told my boss to quote that work to...

    I've already told my boss to quote that work to the customer. Thanks for confirming I'm on the right track.


    Secondary problem, this building has a pair of these ... one has just had some kind...
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    Can I get that again in English?

    Can I get that again in English?
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    Mounted in the blower section I hate them

    Mounted in the blower section

    I hate them
  43. Replies
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    Chilled delta P 15.7 entering chilled 61...

    Chilled delta P 15.7
    entering chilled 61
    leaving chilled 56
    evap approach 6.6
    entering condenser water 75
    leaving condenser 85
    condenser approach 24.9
    condenser delta P 8.5
  44. Replies
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    I'll put the numbers up later today

    I'll put the numbers up later today
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    Not test1 & test2 ... Regular 1 & 2 1 & 2 are...

    Not test1 & test2 ... Regular 1 & 2

    1 & 2 are the zone sensor terminals
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    Carrier 23XL surging on start up

    I have a new customer that has a site with a pair of Carrier 23XL screw chillers. One of them occasionally makes a pretty nasty surging sound - almost a banging sound - on start up ... but not...
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    Connect terminals 1 & 2 on the LTB (not the 2...

    Connect terminals 1 & 2 on the LTB (not the 2 test terminals) to a 70* 10k thermistor mounted in the return air. You can temporarily use the outdoor air sensor from the corner of the unit near the...
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    Yeah those fans are junk. The way trane has them...

    Yeah those fans are junk. The way trane has them wired when they go bad and ground out they run continuously. I have concern that this will eventually cause heat exchangers to rust out during the...
  49. Your bur mark is your only clue ... the other...

    Your bur mark is your only clue ... the other "evidence" is irrelevant and could be caused by other things. Both wire sides of a resistor/load have "current" unless it is grounded (in which case the...
  50. I have seen the ratings on the belly band...

    I have seen the ratings on the belly band heaters. Reading something like that from an installed defrost heater would probably be impossible even when the heater was new, much less old & dirty.
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