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  1. Replies
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    Trane Rtu

    I am working with a Trane Rtu M/N YCH150C4LOAB..S/N L06104. Customer wants to replace the zone sensor with a programmable thermostat.The existing sensor is a BAYSEN008B. I have no wiring diagram so I...
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    I added 1# R22 which brought the superheat closer...

    I added 1# R22 which brought the superheat closer to 12. My discharge pressure fell inline with the entering cond water temp. i am having the maintenance clean the evap coil as it does have some...
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    going back tues. going to check the water flow...

    going back tues. going to check the water flow thru condenser then perhaps add a little refrigerant. the evap almost seems to be starving a bit.
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    I found out comdenser water temp rise should be...

    I found out comdenser water temp rise should be 10 to 14..so i think with high subcooling and high superheat it may be a txv or metering device as it looks like a fixed orfice.
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    Water source heat pump

    I have a McQuay heat pump M/N CCH120AETS. The compressor seems to intermitently shut down and not restart until the power is reset. When i went out I found the following>>>suction 70# discharge...
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    I have previously blown out the condenser coil...

    I have previously blown out the condenser coil but it probably could use more. I charged it as a liquid. yes the hot gas condensate evap. I am just not sure what proper operating temp pressures...
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    70 to 75. the discharge air of the condenser...

    70 to 75. the discharge air of the condenser seems to be recycling because of the low ceiling tiles.
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    on top of the case

    on top of the case
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    Walk in freezer

    I have a Polar Pak system that had a refrigerant leak and went flat. The leak was on the bottom of the 3/8 loop that sits in the drain pan. After repairing it I started to charge the system. It...
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    Yes it has a sight glass. It is also 14 degrees...

    Yes it has a sight glass. It is also 14 degrees outside. On amother note it seems someone put a 6" pulley on the blower motor. I can't get the amps right so I am wondering if the pulley size is wrong.
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    909

    Leibert refrigerant charge

    I have a Challenger 3000 M/N Bu06---CAM (middle part of # missing) The condenser M/N is CSF083-P. Is there any information on the factory refrigerant charge? When the hot gas by pass valve is...
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    Fulton Boiler lockout code

    I am working on a Fulton Vantage Boiler. M/N VTG-3000. The boiler has been locking out requiring a manual restart. The code on the seimens control says -Fan contactor Fan contactor is off. It is...
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    The heat exchanger has a leak at the...

    The heat exchanger has a leak at the header,allowing domestic hot water to enter the combustion side. Once the burner would light it would flash the water to vapor causing the calcium left in the...
  14. If you look inside a ball valve you will see that...

    If you look inside a ball valve you will see that the size is smaller. You can order full port valves for minimal restriction.
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    Its the worst I have seen also..I brushed it out...

    Its the worst I have seen also..I brushed it out and then hosed it out and used CLR to clean..then found the leak.
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    Heat exchanger corrosion

    http://i804.photobucket.com/albums/yy322/stevesexplorer/jaylot/Jaylot-1.jpg

    I also found a water leak at the top header of the exchanger.
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    Boiler Heat exchanger corrosion

    I have a Munchkin Boiler M/N 399VWHASMEP. Inside the heat exchanger I found an excessive amount of white corrosion. I will try and put a picture up.
    I believe it is electrylosis. How do I prove it...
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    The heat exchanger is a steam tube bundle,do not...

    The heat exchanger is a steam tube bundle,do not know the capacity ,yet. I installed tees on the pumps to get pressures. I did find out engineers design stogage tanks with the assumption that at 800...
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    Storage Tanks

    I have 3- 3300 gallon domestic hot water storage tanks that i am trying to heat and maintain temps of 140. I am trying to estimate how many btu's it will need. I am using 3 steam boilers rated at 4...
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    Uline Ice Maker

    Does anyone have a link or info on a under the counter ice maker? It's an Uline M/N ULN75R-00. I am pretty sure its a discontinued model so any info would be great. I have 3 of them that are not...
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    I see where I made my mistake with the 408 and Hp...

    I see where I made my mistake with the 408 and Hp 80
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    I am not sure it is low yet. I am working on two...

    I am not sure it is low yet. I am working on two different systems. The one that I think is low also has 2 of 4 evap fan motors failed. I can't check the charge until the motors are replaced. I found...
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    I will add 408A. I was looking at a alternative...

    I will add 408A. I was looking at a alternative refrigerants chart and saw that R402 and R408 looked similiar.After looking at the composition of refrigerant blends chart am I correct in seeing that...
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    Refrigerants

    If a system has been charged with 408A can I add HP80 if the charge is low?
    If the compressor is marked 408A and the txv is marked 502 is this a problem or are they compatable?
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    Motor Grease

    I have a US Motors motor M/N H60P2 B S. It is a 60 hp motor that is used as our chilled water pump. It runs 24/7 and is classified as a hostile duty motor.
    It has grease fittings but I am not sure...
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