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  1. Replies
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    This is a very interesting point to me as I've...

    This is a very interesting point to me as I've often wondered about this vs leaking valves. How do you evaluate/diagnose this? Refrigerant laced oil? Bubbling in oil sight glass? How does oil became...
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    Motor master yes carrier's. Trane uses Johnson's....

    Motor master yes carrier's. Trane uses Johnson's. Pretty sure lieberts use Johnson's to with an emerson sticker on it.
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    Also why is fan cycling seemingly forbidding on...

    Also why is fan cycling seemingly forbidding on refrigeration systems yet all you see on a/c. I've seen a lot of outdoor units with fan cycling and it seems to work. Not saying right or wrong just...
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    Buttwheat- what does HGP have to do with head...

    Buttwheat- what does HGP have to do with head pressure control?
  5. Replies
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    I see these speed trol deals installed oem on...

    I see these speed trol deals installed oem on carriers and Trane split ac units and they ought to be recalled and banned. Liebert use them to which I never understood because the liebert outdoor unit...
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    Really no I've in my realitivly short carrer of...

    Really no I've in my realitivly short carrer of 10 years I've only replaced one an I was certain it was the problem. I just remember once upon a time my previous boss man told me to break the tab for...
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    I should've read whole thread looks like...

    I should've read whole thread looks like gunslinger hit the nail on the head as to what I was talking about although I don't think mine goes up to 10k - 4 digits all she has
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    902 to carry in pouch- nice to have clamp on...

    902 to carry in pouch- nice to have clamp on ammeter but the resistance scale is limited which is a problem when needing to verify a 10kohm or what have you sensor. That's where the 116 comes in but...
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    1,567

    Headmaster bulb- refresh my memory

    So if we suspect a headmaster- say stuck in bypass mode- breaking off the tab and releasing the bulb charge would divert through the coil rather then bypassing to receiver correct? Been a few...
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    506

    And as I read the lit further it clearly states...

    And as I read the lit further it clearly states on the picture that the on indicator has no function on the L4064T - so there she be
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    506

    Sorry yes I've been called on that before - I...

    Sorry yes I've been called on that before - I need to update my profile and include email
  12. Replies
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    506

    I was able to find some lit when I omitted the ...

    I was able to find some lit when I omitted the 1210 says the 4T has a bimetal heater that turns fan on 90 seconds (unadjustable) after a call- so way have to on dial? There's clearly 3, on off and...
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    506

    Yea that'd be great. This definatly has an on...

    Yea that'd be great. This definatly has an on dial as well as off. Because I'm too lazy in my own house to pull and measure does any of that nomenclature indicate the probe length?
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    506

    It is a L4064T1210.

    It is a L4064T1210.
  15. Replies
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    506

    No this says heater leads right on it. Two little...

    No this says heater leads right on it. Two little black wires that come out from behind the dial. The limit circuit lands on the base
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    506

    What are the "heater leads" for There is some...

    What are the "heater leads" for There is some sort 24v connection on this one in addition to the limit and fan. I've seen this before in my service work. Some sort of heat anticipator for the fan...
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    506

    Old type fan switch /limit settings

    Just wondering where you guys typically set the fan on/off settings on the old school helical type honeywell fan switch. I'd say on 120* off 90*. It's an old mid late seventies vintage Lennox...
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    562

    Offfta- just priced out some S..beep mfg...

    Offfta- just priced out some S..beep mfg censored... F. "Ceramic hybrids" . Yea the sizes I inquired about where special order and quite $pendy. Didn't seem cost effective vs the ring. I was more...
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    562

    Ceramic bearings vs shaft grounding

    I've found little discussion on this and it seems only one mfg holds patent on the shaft grounding bearing protection rings (SGRS) . I'm referring to premature motor bearing failure from vfds. In the...
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    555

    It's about 5 years old maybe.

    It's about 5 years old maybe.
  21. Replies
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    555

    Isn't nickel safe just for cubers? So you do have...

    Isn't nickel safe just for cubers? So you do have to break the bottom water seal to pull the auger then huh? I'm sure I dropped the ball by missing the bin drain but it seems like the ice is a little...
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    What can I say?? I hear hooves and think of...

    What can I say?? I hear hooves and think of zebras instead of horses. Doesn't it just drain out of the dispenser chute? Wow not sure how I missed that one
  23. Replies
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    Scotsman nugget basic help

    My ice machine service is few and far between so here goes. Have a scots nugget dispenser Mdt5n40a-1h
    0907132001330. The bottom of the hopper /dispenser clogs with slush. Seems to be producing "wet...
  24. These are great I never thought of the laser....

    These are great I never thought of the laser. These are both great responses and both address the issue of accessability and line of sight... SIMPLE QUESTIONS WARRANT SIMPLE ANSWERS



    I agree...
  25. So when you use the string you just tie it around...

    So when you use the string you just tie it around one center of the grove pull it tight across the other center and look for "bends" if you will In the string? Problem is more often then not its near...
  26. Ok I'm confused.are you telling me to by the...

    Ok I'm confused.are you telling me to by the laser alignment tool? I personally try to offer equal parts quality regardless of the customer- naturally some I can't stand.
  27. This is a great link thanks. Angular...

    This is a great link thanks. Angular misallingment is rarely an issue on blowers in my experiance its the parallel and the straightedge on the outside doesnt really add up to a true parallell...
  28. Dumb question on aligning fixed to adjustable sheave

    I know this is a dumb question but what is the best method of aligning single or multiple grove fixed to adjustable sheave. Obviously straight edge on the outside on all fours is inaccurate when the...
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    Looks like you have a vfd66 used most likely for...

    Looks like you have a vfd66 used most likely for first stage fan for head pressure control. I had a 100 ton where they where installed in the upper right left top panel with inadequate ventilation...
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    But there is no switching of the Tstat line - it...

    But there is no switching of the Tstat line - it is only the main air- almost seems like it looks out the heating control only
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    Pneumatic VAV lockout relay

    Hello. Working on wsome 80's vintage Anemostat pneumatic vavs. There are hot and cold controllers and the pneumatic schematic diagram says "dual max with reheat feature and lockout" the lockout...
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    Why is this so That the expansion valve is will...

    Why is this so
    That the expansion valve is will be oversized - the typical operating pressures are quite similar
  33. Replies
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    This is spot on- indeed I did have to adjust the...

    This is spot on- indeed I did have to adjust the TXV after as superheat was way too low at start up with a warm box.
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    Year old thread I guess but just my two cents...

    Year old thread I guess but just my two cents AVOID Astea - sounds like another form of the same type of thing. It sucks and even the admin side of things hate it- so one thing field techs and admin...
  35. So after some considerations I modified the...

    So after some considerations I modified the control system a little. Set it up to cycle on Tstat and mounted bulb up into top shelf. Bulb cap tube fit into crevice nicely so no concerns over damage...
  36. Not sure exact comp capacity but if the LPC as...

    Not sure exact comp capacity but if the LPC as after the the CPR how are we accurately cycling according to evap pressures it the sensed pressure is reduced? Makes no sense to me. So done lazily...
  37. Thread: r12 to 134a

    by dave1234
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    Oh absolutely POE " scrubs the walls" But I've...

    Oh absolutely POE " scrubs the walls" But I've been confused where such goo - parafin wax- comes from in a system that's never been services prior and come from factory with AB oil- thought the wax...
  38. Thread: r12 to 134a

    by dave1234
    Replies
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    1,663

    Maybe it's just me but for whatever reason 409...

    Maybe it's just me but for whatever reason 409 seems to run hottest of all the 12 flavors. I can say for absolute certain that a small percentage of the 502 to 404 Retros I've done on smaller systems...
  39. LPC as operator AFTER CPR? And why on med temp

    open deli case having erratic behavior numerous callbacks and evap freeze ups- got my crack at it today- hmmm somebody installed the LPC - which is the operator no Tstat- after the CPR valve. Gee...
  40. Replies
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    When dialing In superheat what kind of subcooling...

    When dialing In superheat what kind of subcooling value do you look for after the receiver -uh oh here we go again- seriously though just wondering as I tell a lot of the newer guys the absolute last...
  41. Replies
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    Right. Operating pressures to low. I wrapped this...

    Right. Operating pressures to low. I wrapped this job up today and made the switch. $eem$ great. I recently converted the freezer in the same unit from HP80 to 404. Maybe it's just me but I just...
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    Because I'm just trying to sound smart. No...

    Because I'm just trying to sound smart. No seriously it's from what I've read here and revewing the enthalpy curve. I thought I've read it here. Yes am aware the cost of all these blends and I ask...
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    My thoughts exactly thanks for the reassurance

    My thoughts exactly thanks for the reassurance
  44. Replies
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    Mp39 or 134a ??? To convert or not

    Have a leak- no idea what was in it but judging by the history I'm sure it was mp39, TXV says r12 so... Is med temp walk in air cooled pump down system with headmaster. Here's what makes my decision...
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    Why can't i view attachments on iPhone .

    Why can't i view attachments on iPhone .
  46. Replies
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    Cope LAHA 3ph overload confusion

    Having some trouble understanding something very basic- 3 ph LAHA comp has a power terminal block-then a seperate terminal block that go to the overload there if you remove the overload there is...
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    Interesting but I have a hard time seeing that...

    Interesting but I have a hard time seeing that for this application. I'm having the shop fab me something but well see how it goes- just in x with a plate and nut welded at the end well see how she...
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    Sounds like you guys have been there!! Are the...

    Sounds like you guys have been there!! Are the drag links fat enough to fill the slot without slipping out i realize there's different sizes would need something Blunt and large
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    Not bad but I put quite a bit of push on the...

    Not bad but I put quite a bit of push on the biggest screwdriver I could find it just slips out the slot on the part is so wide and not very deep. Obviously copeland doesn't want them replaced
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    Ok relief seems readily viewable by pulling the...

    Ok relief seems readily viewable by pulling the discharge valve- now how the hell does one get it out? Would it have killed them to put a hex head on it for a socket? Tried using a chisel as a...
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