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Member Post posted an update September 7, 2026
September 7, 2026 (edited)
Hello!
Not my first post here but thought I’d say hello. Signed up months ago but only started reading through some useful post to find information most guys wouldn’t share.
Name is Melvin and im a commercial HVAC tech in Hawaii. I don’t know everything, and still have trouble calls kick my ass every now and then like im always the one finding the…
Member Post, Member Post and 2 others2 Comments- View more comments
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Member Post posted an update September 4, 2026
Petra Chillers
team, Does anyone have any literature on the PETRA chillers?
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Member Post posted an update July 8, 2026
Dunham Bush service information
Team does anybody have any Dunham Bush screw chiller information? i have very little and could use some literature, Thanks
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Member Post posted an update September 4, 2026
September 4, 2026 (edited)
Carrier 19EA overhaul manual
Looking for any supporting manuals for an overhaul on a Carrier 19EA. Any information is greatly appreciated
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Member Post posted an update August 24, 2026
RTAC sensors reading different Techview vs HMI
Having oil flow alarms on RTAC 2254. Have about 7″ in oil seperator. Unit will start then low oil flow alarm after short run time. Only oddity I can find is computer pressures match gauges. But HMI displays 15psi difference. With alarm being strictly math calculation by machine could this be causing alarm. Its odd HMI and computer read…
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Member Post posted an update August 27, 2026
Carrier 19DK Vane Assembly
Hey Guys,
Have a 19DK that needs to have the vane assembly rebuilt. Anyone have the procedure?
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Has anyone actually attended Trane training, either technician side or engineer side, up in La Crosse, WI?
My maintenance guys are asking to possibly get some training but didn’t know if paying for the trip up there was worth it. Wondered if anyone here has experience with it, positive or negative.- View more comments
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Member Post posted an update August 21, 2026
Happy Friday everyone , I want to replace a Carrier Screw compressor internal oil filter , I know behind the filter there is a check valve to prevent back flow of oil and gas . I did it twice long time ago but I dont remember I need to twist the old filter CCW or CW to remove it . Please bring my memories back , I am heading to be 67yrs old
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Member Post posted an update August 17, 2026
Here is a little project of mine , AI has done a lot of the heavy lifting.
Being a ex OEM tech I often miss the tools that I used to have access to.
This is a Modbus tool that is nicer to navigate then most onboard interfaces.It has also been useful for correcting issues after BMS has altered values that where not accessible via the HMI.
I…
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“Hey I think y’all didn’t wire some of the sensors back correctly on the chiller.”
“We did a point-to-point check, what makes you think that?”
*Sends following photo*
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