Thread: One for the fridgies

Any reason they couldn't have run the new mains & make final connections at the last minute?

Just the usual, right hand doesnt know what the left is doing.

For sure something like that should have been done, not difficult at all.

The boss of the whole job said to me its not much of a design if it cant go a few hours without water.

That just shows how ignorant they are, and their attitude.

Originally Posted by scarry

Just the usual, right hand doesnt know what the left is doing.

For sure something like that should have been done, not difficult at all.

The boss of the whole job said to me its not much of a design if it cant go a few hours without water.

That just shows how ignorant they are, and their attitude.

He better hope that his firm doesn't get a huge bill for the possible damage that may still yet show up.


What was that noise that sounded like a machine gun firing?


Ah yes, that'd be all the Safeties dropping out. Could still happen down the track.

Yesterday it was blocked accuraters catches them out all the time.They have been trying to sort that split ducted out for two weeks

Hmm, never knowingly run across these little suckers! Can you tell me a bit more please? Cheers

Its a Govt site, about 20yrs old, they dont spend money on, desk jockeys with no idea as usual.
There are two chillers, smaller one handles the load no problem, even on the hottest day.The larger chiller short cycles and continually trips on oil failure.It was probably installed originally to cope with site expansion, but the newer buildings have DX units.So work that out
The BMS is way out of date, no parts available, so nothing really works properly, through out the whole site,AC wise.
There was a quote from the chiller manufacturer, to fit a PLC for chiller plant only, which would sort out all the main plant issues, also save a heap of power, and was ready to go.
The Newman govt put an end to that and subsequent governments have done nothing as well.

The power they are wasting, and huge maintenance costs is absolutely ridiculous,but no one seems to care.
An upgrade would pay for itself in a few months, with reduced power, reduced maintenance, and wear and tear on equipment.

But instead, throwing AC units in schools, seems a better option, its all about votes.

Originally Posted by Old Farang

Hmm, never knowingly run across these little suckers! Can you tell me a bit more please? Cheers

Fixed oriface expansion device, which slides like some check valves, used on reverse cycle AC units.

On cooling the accuraters at the Evap,slide one way, and are the expansion device, where the ones at the outlet of the condenser slide the other way for no expansion, full liquid flow.

On heating the opposite happens, they slide the other way, at the Evap they let liquid through, no expansion, at condenser,slide and become the system expansion device.

They have strainers in them that clog up, often we pull the strainers out and they still clog up.
Even with a large Bi flow liquid line drier, they still seem to clog up, with Carbon looking stuff, and sometimes metal pieces.

Originally Posted by scarry

Its a Govt site, about 20yrs old, they dont spend money on, desk jockeys with no idea as usual.
There are two chillers, smaller one handles the load no problem, even on the hottest day.The larger chiller short cycles and continually trips on oil failure.It was probably installed originally to cope with site expansion, but the newer buildings have DX units.So work that out
The BMS is way out of date, no parts available, so nothing really works properly, through out the whole site,AC wise.
There was a quote from the chiller manufacturer, to fit a PLC for chiller plant only, which would sort out all the main plant issues, also save a heap of power, and was ready to go.
The Newman govt put an end to that and subsequent governments have done nothing as well.

The power they are wasting, and huge maintenance costs is absolutely ridiculous,but no one seems to care.
An upgrade would pay for itself in a few months, with reduced power, reduced maintenance, and wear and tear on equipment.

But instead, throwing AC units in schools, seems a better option, its all about votes.

Oh well, it does keep you & your lads out of trouble on the streets & so long as they pay up what the heck, with that attitude.

Re Accurators. Correct me if I'm wrong but I believe these were a Carrier invention (?) & when kept clean were quite a reliable component. I found the common complaint was that as the orifices were removable easily, idiots would use the indoor ones for outdoors & vice versa & sometimes if the orifice fell out during installation they fitted nothing & wondered why. Deeeeeeerrrrr.

Originally Posted by scarry

So was at a site today,first up,replacing a couple of actuaters on chilled water valves.Actually something I am now qualified to do.

Hmm,the water is a bit warm.Wander up to the chiller plant room,and nearby there is a huge excavator digging a huge hole,and seems a plumber has decided to turn the water off to the plant room for the day,to rerun the mains to a new building that is being built nearby.

Cooling towers were bone dry
No cooling in the whole site until we had them full and up and running at 2.00 this arvo.

Another **** up

Yesterday it was blocked accuraters catches them out all the time.They have been trying to sort that split ducted out for two weeks

Yer we thought it was short of gas they told the maintenance guy on site.
Can’t seem to find a leak anywhere.

Hahaha, had that on one site in Canberra.

The clever little Powerpax chiller was ramping up and down without really getting anywhere near capacity.
"Hang on, I can't hear any water in the towers.."

Exactly the same thing happened.
And the blokes who turned the water off didn't advise anyone and claimed that they didn't turn it off.
Really?
All the supply cocks are turned off.
And they were the only ones signed into the contractors log prior to us getting the call.
Bloody plumbers!

Originally Posted by 4bee

Oh well, it does keep you & your lads out of trouble on the streets & so long as they pay up what the heck, with that attitude.

Re Accurators. Correct me if I'm wrong but I believe these were a Carrier invention (?) & when kept clean were quite a reliable component. I found the common complaint was that as the orifices were removable easily, idiots would use the indoor ones for outdoors & vice versa & sometimes if the orifice fell out during installation they fitted nothing & wondered why. Deeeeeeerrrrr.

That's the first place I saw them to, in the locally made Carrier/Bryant units.