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  1. How do you create a different td on an evaporator ?

    I see that in the Johnstone catalogue (which is online), that each evap has a different btuh rating for different td's. The higher the td , the higher the btuh rating of the coil.
    HO do you create a...
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    yes I did a combustion test , tomorrow i'll post...

    yes I did a combustion test , tomorrow i'll post those results as I do nto knw which memory slot that they are in in my tester. I'll have to go read them offf the boiler and i'll take another test....
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    Boiler yellow flames

    I have run out of technical ability here ....

    Raypak... E624 T boiler...old atmospheric boiler...steel burners...copper fin tube heat exchanger ...10 or 12 inch flue up 4 feet , 90 degree 3 ft...
  4. About 15 years ago (they are out of business...

    About 15 years ago (they are out of business now)I saw a wicooler running and working with a compressor that was belt driven and had a fan on the motor right after the drive pulley that blew air...
  5. Thread: Different RPM?

    by johnnyb
    Replies
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    895

    I can Has ? Sorry no offense here but I wpu;d...

    I can Has ? Sorry no offense here but I wpu;d never spray wd 40 into any bearings . It is not a lube . It wpu;d pn;y wash put any lube thea twas still there. It gets sticky after a very short...
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    What is waste pool water ? How can you see the...

    What is waste pool water ? How can you see the water side of the evaporator in a heating application ? Isn't the water being pumped through the heat exchanger ?
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    you can get that in writing from the manufacturer...

    you can get that in writing from the manufacturer of the belts.
  8. look out for testers with expensive sensors that...

    look out for testers with expensive sensors that need replaced every 2 years and have to be sent back to the factory for replacement and calibration. get one that has long life sensors and can be...
  9. Thread: Aaon unit

    by johnnyb
    Replies
    10
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    1,359

    Boy , I'm no expert on giant systems like this...

    Boy , I'm no expert on giant systems like this but.... I'd think 55 degree supply air and space temp at 68 - 70.
    Is this heating only ? I was thinking 55 for cooling . What kind of controller...
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    reply

    didn't check the amperage , good vac old mostly virgin r22 about 75%, no oil removed, I have heard of oil slugging at the compressor and wondered if the evap could be loaded w oil but when I tapped...
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    update here: coil is not perfectly clean but...

    update here: coil is not perfectly clean but can see light through it, a;pprox. 20 deg sub cool, 35 + superheat , 85-95 deg return,, , cap tubes mentioned, 160 to 240 head p on fan cycle...
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    another thought...

    It could be that there is low voltage on the control circuit or that the coil is wired for the wrong control voltage. Many times you can have this and the coil will hold but not pull in without...
  13. Replies
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    13,535

    refrigerant restriction

    Any ideas what restriction I could have?
    6 ton Armstrong RTU
    replaced the Scroll compressor with and exact replacement andnow have 10 -2o psig suction.
    Replaced the (new) drier and the cap...
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    369

    This is probably a fuel gas code issue and has to...

    This is probably a fuel gas code issue and has to do with the size of the regulator and size of the gas lines supplying it. Call The manufacturer for easier answer. The tech guy there is just...
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    887

    motor starter is just as said previously here :...

    motor starter is just as said previously here : It is a contatctor with an overload relay mechanism that must be wired correctly....the protection only works if the control circuit is wired...
  16. Hilmor problems

    Upon delivery of the Hilmore dual digital not mechanical gauges ...the delivery man , muy usual counter man said;" We'll give you new seals because every one who has bought these gauges ahas had...
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    if the circuit breaker (you said it was a 50 amp...

    if the circuit breaker (you said it was a 50 amp ) is the correct breaker for the wire feeding the equipment and it does not exceed teh max fuse listed on the equipment, then you do not need another...
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    910

    What are you trying to do ? What do you mean by...

    What are you trying to do ?
    What do you mean by "would it affect the waveguide "?
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    Try going to ham radio sites such as qrz. I...

    Try going to ham radio sites such as qrz. I don't understand exactly what you mean by having the waves travel in one direction.

    They go out of the waveguide as they originated at the entrance....
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    Well here it is 2 months later.....after a few...

    Well here it is 2 months later.....after a few wasted trips and a lot of differing opinions at Manitowoc...we ended up installing :
    a new compressor,
    a new higher pressure headmaster,
    a new...
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    YES NEW FAN CYCLE SW IF I ADDED A NEW...

    YES NEW FAN CYCLE SW IF I ADDED A NEW ADJUSTABLE SW SET 250 220 I COULD GET RID OF MY CARDBOARD AND GO HOME. ... DID I MENTION I HAVE 5 OR 6 TRIPS 1.5 HR ONE WAY ?
    GOTTA GO BAC AND TRY...
  22. Replies
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    WHY DO I HAVE SUCH HIGH SUCTION AND NO ICE...

    WHY DO I HAVE SUCH HIGH SUCTION AND NO ICE HARVEST ? IT ONLY TAKES ABOUT 80 PSI NORMALLY TO HARVEST W 404.
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    INSULATED LINES YES 145 HEAD W 125 SUCTION...

    INSULATED LINES YES 145 HEAD W 125 SUCTION AFTER SEVERAL MINUTES INTO HARVEST
    WEIGHED THE CAHRGE IN AND OUT. VERIFIED THE CHARGE VALUE OF 200 OZ = 12.5 LB
    IT HARVESTS W CONDENSER COVERED .
  24. Replies
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    STILL 125 SUCTION ATER SEVERAL MINUTES OF NON...

    STILL 125 SUCTION ATER SEVERAL MINUTES OF NON HARVEST.
    SUCTION AT END OF FREEZE IS ABOUT 20.
    LINE SET IS 20 FEET OR MAYBE 25
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    I LET A CUSTOMER INSTALL HIS OWN LINESET A WHILE...

    I LET A CUSTOMER INSTALL HIS OWN LINESET A WHILE BACK ON A USED ICE M SALE . SAME QUIET CUBE BUT NOT ICVD INDIGO. THEY KINKED THE LIQUID LINE . IT MADE ICE FINE BUT WOULD NOT HERVEST. REMOVED THE...
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    I THINK THE NEW FAN CYLE IS WORKING AND WIHT THE...

    I THINK THE NEW FAN CYLE IS WORKING AND WIHT THE NEW COMPRESSOR
  27. Replies
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    AMBIENT WAS -3 LAST WEEK. ABOUT 30 NOW. THE...

    AMBIENT WAS -3 LAST WEEK. ABOUT 30 NOW. THE HIGH SUCTION IS WHY I DONT THINK THAT THE HARVEST VAVLES ARENT OPENING. AND YES IT IS HIGH. THAT IS ALSO WHY WE THOUGHT MAYBE A SUCTION VALVE WAS...
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    ALL OEM BOTH EVAPS WONT HARVEST OOR BOTH DO...

    ALL OEM
    BOTH EVAPS WONT HARVEST OOR BOTH DO WHEN THE CONDENSER IS COVERED DURING FREEZE.
    I THINK A FAN CYCLE SW WOULD FIX IT ALL BUT IT IS NOT FACTORY DESIGN AND ALL WARRANTY WORK
  29. Replies
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    YEAH IT PUMPED DOWN AND HELD LIKE A ROCK. BUT WE...

    YEAH IT PUMPED DOWN AND HELD LIKE A ROCK. BUT WE FIGURED THAT IT COULD HAVE A SUCTION VALVE BAD AND STILL HOLD. WWOULDN'T PUMP EFFECIENTLY . HE SAID IT WASN'T MAKING ANY HEAT FOR HARVEST DURING...
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    HEAD DROPS TO 145 IN HARV AND SUCTION GETS UP TO...

    HEAD DROPS TO 145 IN HARV AND SUCTION GETS UP TO 125 . DONT THINK THE HARVEST VALVES ARENT OPENING.
    TH 160 PSI IN FREEZE WAS BEFORE THE NEW HEADMASTER. 210 NOW. DIDN'T CHECK THE SETTING ON THE...
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    I WAS WONDERING WHY MORE AXV'S AREN'T USED . ...

    I WAS WONDERING WHY MORE AXV'S AREN'T USED . SEEMS GENIUS TO ME . I NEED TO RY THAT.
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    YOU 'RE LUCKY HERE SO FAR, (OR TALENTED) I...

    YOU 'RE LUCKY HERE SO FAR, (OR TALENTED) I REPLACED THE HEADMASTER AND COMPRESSOR AND I STILL CANT HARVEST WITHOUT KEEPING THE CONDENSER COVERED IN FREEZE CYCLE. SEE MY POST AND HELP ME OUT...
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    Manitowoc harvest help

    IY1474C W ICVD1495 R404A
    COLD WEATHER NO HARVEST.
    WEIGHED THE 12.5 LB CHARGE OUT AND IN.
    LOW HEAD ,,REOLACED HEADMASTER ,DRIER,AND FAN CYCLE SW AND GOT BETTER HEAD . WENT FROM 160 TO 210 IN...
  34. right on ....I have beer cases running at 28 deg...

    right on ....I have beer cases running at 28 deg f with no coil freeze up due to off cycle defrost every cycle. you cna adjsut the internmal screw on most of those stats also. it doe snotseem to...
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    I have had this happen , always with pie systems...

    I have had this happen , always with pie systems ...we have started to replacing the cap tube w txv as the new cap tube will plug up soon. the txv's don't seem so susceptible to that black junk. I...
  36. Thread: Tech support

    by johnnyb
    Replies
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    1,405

    It depends on who you get and what they know and...

    It depends on who you get and what they know and how willing they are to help you. All of theese vary and within the same tech support department they vary. Some companies do not even share info...
  37. Thread: Torching evaps

    by johnnyb
    Replies
    70
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    5,114

    for a freezer : put it into defrost for a...

    for a freezer : put it into defrost


    for a cooler : shut off the refrigeration and let the fans defrost it, it takes more time but you can do some other stuff while waitng. next option is the...
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    get the service manual for the unit. My best...

    get the service manual for the unit. My best informatin has always been the factory tech department for any piece of equipment made. The water temp should not necesarily be 10 degrees difference at...
  39. Thread: Economizer.

    by johnnyb
    Replies
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    1,084

    hey how about that Lennox ready to go economizer...

    hey how about that Lennox ready to go economizer ? Expand on that , please . maybe a model number . I set up my first Jde this week. Easy set up but needs some improvements.
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    lots of good facts here , I have done this and is...

    lots of good facts here , I have done this and is now standard policy to replace plugged cap tubes with liquid line and txv and it seems to me that with an indoor unit that the ambient conditions are...
  41. Thread: open return

    by johnnyb
    Replies
    7
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    745

    thanks

    I was thinking that most of the return air would still come from the old original return air duct which will be either connected or adjscent to the return air opening in the furnace. ONly some...
  42. Thread: open return

    by johnnyb
    Replies
    7
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    745

    open return

    I know this may sound crazy .. I have done this on a commercial job where the furnaces were in the conditioned space (two pipe 95%)furnaces.

    I want to leave the bottom of this new 95% furnace...
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    ice machine wtr pump wire

    What is the wire (rigid , bare, stainless maybe) on some ice machine water pumps for? It is atached to the motor bolt and goes down into the water sump under the plastic pump.
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    you can google that and get some good drawings.

    you can google that and get some good drawings.
  45. I went on one smilar to this... thpught the...

    I went on one smilar to this... thpught the orifice was too big...there wan't any orifice installed. after installing the orifice from the condenser ... I didn't get much change . haven't been...
  46. Thread: help

    by johnnyb
    Replies
    4
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    533

    help

    I have a wif lots of moisture. comes all the way through the evap before next defrost. The fan blades had lots of frost on them today. 3 defrosts 30 minutes override new terminator...
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    2 idiots here , one is me.

    firt one is a reach-in cooler call for "not working" ; found a glass rotating display at 36 or so degrees. I told them it was working and they said but it dries out the cake . ok not too...
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    violaton

    Sorry , I am still a bit new and now realize that this discussion is a violation so I will not respond to it again. I see that some from the website have responded also. It is a good discussion...
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    There is not much science in Darwinism. It was...

    There is not much science in Darwinism. It was just his opinion. There is no link between apes and humans. It's never been found and won't be because they were created differently the same as...
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    If it gets down to _20f .. you probably don't...

    If it gets down to _20f .. you probably don't have a refrigeration problem , but rather a control probelem. Thermostat sticking, defrtost timer sticking, defrost termination sticking,loose wire,...
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