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  1. Thread: malware

    by mrhvacmechanic
    Replies
    1
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    107

    malware

    Hope I'm in the right section??

    When I clicked on HVAC Talk in my favorites this evening, I got a message from Google that the site is unsafe?

    First time I have ever received a notice all...
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    421

    Changed entire pump 115 v

    Changed entire pump
    115 v
  3. Replies
    7
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    421

    Factory ball valves in and out Vented 12 psi...

    Factory ball valves in and out
    Vented
    12 psi two story house
  4. Replies
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    421

    GRUNDFOSS PUMP SCREECHING

    Had a call yesterday. Residential four zone system with four grundfoss pumps. One of them making a screeching noise.

    Replaced with identical pump and new one screeching also?? Any info would be...
  5. Replies
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    2,175

    2o years ago, my helper who was 6' 2" tall found...

    2o years ago, my helper who was 6' 2" tall found a guy stealing tools from his van. Make a long story short, an ambulance arrived and took the guy to a local hospital due to injuries!!
    I have...
  6. Thread: Pigeons

    by mrhvacmechanic
    Replies
    13
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    1,318

    Working in NYC there are many units like this. I...

    Working in NYC there are many units like this. I won't work on thel till they are chemically cleaned. Waste can cause chest pains or possible fever from the fungus.
    Having asthma I stay away from...
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    707

    Did you ever get password? I need it also?

    Did you ever get password? I need it also?
  8. Thanks control! I noticed this cut says motor...

    Thanks control!

    I noticed this cut says motor has no end switches?
    The existing tower fan panel shows some sort of end switch. I'm wondering if they installed some type of whisker switch some...
  9. INVENSYS DURA DRIVE MA40-7170 DAMPER MOTOR

    120 Volts 150 lbs two position

    Would anyone have a cut on this damper motor?

    I have two of them on top of a fluid cooler for discharge dampers.

    I don't know if it has end switches? I...
  10. Replies
    35
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    2,504

    Fee for re-certify is $90.00 and test is 50...

    Fee for re-certify is $90.00 and test is 50 questions. One of our techs just re-certified.
  11. Replies
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    2,504

    Took STAR in 2007. Its been around a while. They...

    Took STAR in 2007. Its been around a while. They want you to pay a fee every 5 years to update and recertify.
  12. Jer, Would you have the part number for the...

    Jer,
    Would you have the part number for the cable? Also is there a fee for the software or is it a free down load?
    I would like to give the info to my office.
  13. No current sensors of any kind. Just a flow...

    No current sensors of any kind. Just a flow switch connected to the pump panel. My guess is if pumps are in auto and flow switch opens, pumps change over. There are two red fault indicators on pump...
  14. SIEMENS PUMP PANEL with a LOGO 230RC

    Would anyone have the info on how to set up and check out this older model controller.
    The job was installed in 2005.

    The control operates two chilled water pumps. The panel has a flow switch...
  15. Replies
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    9,982

    When these MRI's loose power from a breaker trip,...

    When these MRI's loose power from a breaker trip, they just don't pop back on like nothing happened. Usually on a power loss the computers power down on a UPS system. After restore, system has to be...
  16. Replies
    45
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    5,649

    These timers always bleed voltage thru them As...

    These timers always bleed voltage thru them As stated they operate on a current draw.

    In this case I use a Idec RTE series timer with base, instant close, time open.
  17. Replies
    4
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    889

    I had never seen one before. I have seen in...

    I had never seen one before.

    I have seen in the past the Dx but didn't know you could hook up a screen to it.

    Thanks!
  18. Replies
    4
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    889

    JOHNSON CONTROL

    Here is a picture of it.
  19. Replies
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    889

    JOHNSON CONTROL PAD

    Guys,
    I was doing maintenance on a roof today on a water tower. My partner whent down to the van to get some equipment we needed.

    While I was waiting for him, I saw some other equipment on the...
  20. Replies
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    1,114

    Could the first coil be a pre-heat? The the...

    Could the first coil be a pre-heat?
    The the others after the "Y" could be re-heats for two separate zones or areas with their own T stats?
    Do theses coils all have their own control valves?:)
  21. WIDOW UNIT CLEANING OF STYROFOAM DISCHAGE

    Just a quick question on cleaning the discharge of window units. I have five of them in my home. Three which I bought this season.

    No matter how clean I keep the intake filters, the styro....
  22. Replies
    4
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    868

    Even worse when you have to go off road in the...

    Even worse when you have to go off road in the snow and the van isn't a 4 wheeler!
  23. Replies
    19
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    2,170

    Could there be any evaporation loss due to valve...

    Could there be any evaporation loss due to valve packing & stems over a period of time?
  24. Replies
    34
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    4,000

    I have used Staybrite since 1975, many times on...

    I have used Staybrite since 1975, many times on installing an access fitting. Have never had a problem. However, I usually use a1/8" or 1/4" copper access fitting.

    PSEMG prefers the #8. I usually...
  25. Replies
    31
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    4,292

    Had a call no heat call last winter for a RTU...

    Had a call no heat call last winter for a RTU that fed a basement gymnasium. Another one of those COD's??

    Went up on roof, an found cover hanging by its screws and blown out from the unit??...
  26. BA, This I did know. My point was that I...

    BA,
    This I did know.
    My point was that I didn't think Emerson was still using the ALCO logo on the Emerson products.
    I figured this is an old vale on this unit??
    I do not know when Emerson...
  27. How old is this valve?? ALCO has been out of...

    How old is this valve?? ALCO has been out of business for a while if I'm not mistaken?
  28. Replies
    31
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    4,292

    Turn off the unit and turn off the gas!! ...

    Turn off the unit and turn off the gas!!

    Write on your service ticket that the HXC has a hole or crack in it and it is defective. You turned off gas & power for safety reasons. Also state on...
  29. Replies
    9
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    2,185

    I'm waiting for a set of step plates to come in....

    I'm waiting for a set of step plates to come in. Since I have about 20 bearings on a job to be replaced, they will make it easier.
  30. Replies
    9
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    2,185

    I had looked into the step plates also. Seem kind...

    I had looked into the step plates also. Seem kind of expensive for a set of them.
  31. Replies
    35
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    9,877

    New photo.

    New photo.
  32. Replies
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    2,185

    BEARING REMOVAL ON HOLLOW SHAFT TOOLS

    Hi, hope all are well.

    I have done allot of bearings over the years. However,sometimes I come across a bearing on a hollow shaft that needs to be removed with a puller??

    I can't always use a...
  33. Man that's bad!! Worst I have ever seen also.

    Man that's bad!!

    Worst I have ever seen also.
  34. Replies
    39
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    5,614

    I live in NJ!! "THE LAND OF THE PROFESSIONAL RACE...

    I live in NJ!! "THE LAND OF THE PROFESSIONAL RACE CAR DRIVERS!!" That's what I call it!! No matter how fast you go or what lane you're in you get tailgated.
    The cops do nothing about it.

    I have...
  35. Handy, Would it pay to have a roof contractor...

    Handy,
    Would it pay to have a roof contractor look at the site??
  36. Replies
    39
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    5,460

    Winter or summer, if your driving those kind of...

    Winter or summer, if your driving those kind of hours and not getting paid for it, find another company!! That's ridiculous!!

    Here in NYC its traveling time if its 25 miles or more from the shop...
  37. Replies
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    1,526

    Thank you both. Managed to track down a Johnson...

    Thank you both. Managed to track down a Johnson P70 with manual reset.
  38. Replies
    5
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    1,526

    MANUAL RESET LOW PRESSURE SWITCH

    Gentlemen,

    Need a LP with manual reset??? Adjustable if possible? Range open about 40 psi??

    We need to protect system when Low Ambient time bypasses the existing control. System has lock out...
  39. Replies
    0
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    629

    TEKTRA 905-01

    Hi guys!

    Was on a job Friday with this control which operated a small boiler.

    TEKTRA 905-01 ?? It looks like a Tekmar control but not spelled the same??

    I went to Tekmar site and...
  40. Replies
    65
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    8,397

    I guess they just want you to change the filters...

    I guess they just want you to change the filters and belts in one hour. They want you off the job with out checking the rest of the unit!!

    Then a week later when a service call comes in on the...
  41. Replies
    20
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    2,965

    Some bid low and when they get it, they do as...

    Some bid low and when they get it, they do as little as possible.
  42. Replies
    2
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    1,485

    Good question MH! I installed one the other day...

    Good question MH! I installed one the other day but it came with no info?? If anyone has a cut sheet on this moder please attach it for us?:angel::angel:
  43. Thanks Wolfdog! Its a closed glycol loop. ...

    Thanks Wolfdog!

    Its a closed glycol loop. Condenser coil is spotless!:toetap:
  44. CARRIER AQUA SNAP CHILLER AUTO RESET ALARMS

    Went to job today, and chiller had two alarms: 301 & 302 strainer and condenser coil maintenance.

    Manual says: these alarms are auto reset, not manual reset??

    Question 1) Does anyone know...
  45. Replies
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    582

    STULS 4 TON TEV REMOVAL

    Correct me if I'm wrong??
    In order to replace a TEV on this unit, do you have to cut both the suction and LL and then lift out the "A" coil to do this???

    It seems the cross-member of the...
  46. "D", We checked fan on vsd to see if it was...

    "D",
    We checked fan on vsd to see if it was failing causing a rise in dis press..

    Factory said the unloaders stick some times until oil works into the seals??? Keeping comp unloaded with a rise...
  47. LIBERT DIG SCRL DISCHGE TEMP SENSOR ALARM W/VSD COND FAN

    Having a problem with a Libert digital scroll discharge temp sensor??

    It's been very cold here in NYC and condenser is running on VSD. The two other fans come on above 60*F. New unit,running with...
  48. Replies
    15
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    3,437

    Valdelocc makes a good point. Most companies fill...

    Valdelocc makes a good point. Most companies fill the system and forget about them. Glycol levels have to be checked, they also can become corrosive! This happens if the alkalinity changes. Seed a...
  49. Replies
    8
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    2,078

    Another way for the city to make a buck!!

    Another way for the city to make a buck!!
  50. Replies
    15
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    2,675

    I always will install them. :patriot: Sometime...

    I always will install them.

    :patriot: Sometime 75*F won't keep liquid from collecting in the crankcase.

    May I ask what type of compressor are you working on that you have to recover the charge...
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