Thread: One for the fridgies

Originally Posted by rick130

Not too many Star/Delta starts anymore.
Either part winding start or VSD

Yes you are correct, part winding start.

4Bee,its usually just the fill that needs replacing, gaskets on the inspection panels, sprays if they are broken, floats,corroded strainer, and a few other things.Fan motor bearings, shaft bearings if they have them.Blades,fan scrolls, baffle plates, etc.
These towers are 20yrs old, but I recon a good refurb and they will keep going, fibreglass shell.

Not me making the decision to replace them, I have said before, the Govt love to spend/waste money at times, but other times they wont spend a cent.They would be better off getting the BMS sorted, and recoup the power savings.We have chiller plant wasting power,Chilled water valves jammed open and reheats running, etc,etc.VAV's not working properly as well.

Originally Posted by V8Ian

Des, you'd have barely finished your apprenticeship when that was commissioned.

Thanks for that Ian.


Who you think got the job of charging the Ammonia System in the confined space?


Come in Sucker & I did. Of course I was aware of being part of Adelaide's Colonial History.

Originally Posted by 4bee

Thanks for that Ian.


Who you think got the job of charging the Ammonia System in the confined space?


Come in Sucker & I did. Of course I was aware of being part of Adelaide's Colonial History.

I'll bet you were Adelaide's very own Wild Colonial Boy.

Originally Posted by V8Ian

I'll bet you were Adelaide's very own Wild Colonial Boy.

Not true, but if you like to keep thinking that I can live with it.


I can use a bit of Street Cred.

Better than street cred, Des; you've got AULRO cred.

Originally Posted by V8Ian

Better than street cred, Des; you've got AULRO cred.

HeeeYaaah. I've made the big time so does that mean I can swear on here now? Oh **** 'ang on a mo.

Mate of mine did his time at W&S,they were a huge Mechanical Services and Refrigeration company in their day.

Did a lot of Ammonia Refrigeration,as well as some huge AC, DX jobs.
Duhig library at QLd Uni comes to mind, four 8 cyl open drive Tranes,with evaporative condensers.Two tandem systems.
Probably all gone, been replaced with chillers.

Talking about Star Delta starts,many years ago,i saw a tech start a York chiller, with the contactors wired incorrectly.
Brand new job,Beaufort Hotel in the city, we did the install of the mech services.I think its called something else these days.
From memory, we just replaced the contacts in the contacters,after it was wired correctly.

All the refrigeration units for the kitchen and restaurants had shell and tube condensers cooled by the water from the chilled water system.Hyatt Coolum was the same.

You may recall I replaced a Carpark CO exhaust fan and attenuator at the beginning of the year.
I wanted to use a VSD but we just replaced the Star/Delta of the old system.

The store manager rang and said the fan wasn't running after the sparkies had supposedly commissioned it.

I walked in, the main breaker was tripped so I rang the office and the head electrical engineer assured me it had been running so I reset the breaker.
It started, then bang.

I checked the connections on the roof, it was all wired correctly so I dry ran the contactors. It'd been so long since I'd worked on S/D I had to Google the connections
The supplied bridge from Schneider crossed the phases when it went to Delta.
Visually you couldn't see it, you had to meter it as the bridge was all plastic encased but no way it had been running.
I think he just walked away as it was a $25k job and he didn't want to be responsible, but it took a fridgey to fix it.