carrier 30gx problems

[redroge]

can anyone tell me what causes intermitant low suction temp. faults on a carrier 30gx chiller, this is happening on only one system on the chiller

[Dallas Duster]

There are lots of reasons one might trip. Got anymore information than that?

[freonrick]

when you have low pressure your temp will be low also:playing:

[redroge]

it seems to trip after start up if it can run for ten minutes or more it will settle down and run ok

[Dallas Duster]

Gotta be a series 5 machine or under. What's the weather like ?

[redroge]

chillers two years old and weathers 0 to 5c

[Gibbo]

Is this the same chiller with oil related problems at a university.
If so what happened with that problem.

[freonrick]

what is your exv start position set at? varible speed fan?

[Dallas Duster]

chillers two years old and weathers 0 to 5c

I`d say we start with model number , location(i.e.,hemisphere) , and is it Prodialogue ?

Gibbo must know something.Hmmmm

[Gibbo]

Merry Christmas TGL how you doing, i hear you have snow in Texas bit of a
bummer for the old barbecue eh.
I believe this chiller to be French and yes its pro-dialog.

Have a good new year TGL :couch:

[Dallas Duster]

Merry Christmas TGL how you doing, i hear you have snow in Texas bit of a
bummer for the old barbecue eh.
I believe this chiller to be French and yes its pro-dialog.

Have a good new year TGL :couch:

Hey there Gibbo , Yes on the snow 1st white Christmas in a very longtime they say. So is this Frenchy something you know about? Does it have an economiser on it, is it a shell one or BPHE ?

Happy New Year to you also.

[Gibbo]

Don't know anything about this particular chiller but know the guy is in England and has posted on this site before about oil related problems on a 30GX but never came back to say what happened in the end.

[Dallas Duster]

Well maybe he will be a good chap and share what he has found this time around. Lol

[redroge]

same site different chiller, as for the oil problems they are still there, upped the set points and running the site on a smaller chiller with scrolls on,waiting for a visit from a carrier commissioning engineer
happy new year all.

[Dallas Duster]

With the chiller with the SST alarms does it have a 15,000 step EXV and what kind of econoomiser does it have if any ?

[Gibbo]

Redroge

Where about in England is the site and which Carrier office are you dealing
with.
Check circuit at 100% load as close to setpoint as you can to verify
refrigerant charge and operation of EXV.
When you say it does it on start up is that only during the night or anytime.
How often does it alarm and are the alarm times similar.
The other circuit runs ok. Check it as well that will discount any water
problems.
From memory this chiller runs 24/7.
Try logging the chiller at low and full load.
1. Suction Pressure
2. Discharge Pressure
3. EXV % (open)
4. Discharge Superheat
5. Check oil heaters are working ok when compressor is off, with ambient
temps of 0-5 C you should be able to feel they are on and working.
6. Chilled water temp in and out.
7. Check all transducers and sensors are reading correctlyfor that circuit.

Good Luck

G

[redroge]

hi gibbo
the sites in nottingham and i think the office is birmingham, at the moment with the small chiller running and the low ambient the buildings are ok
with a bit of luck i want to get damion on site as he tells me he knows everything there is to know!

[Gibbo]

Damien should sort you out ok.
Yes Birmingham office covers your area now since they shut
down Warrington which is where Damien used to work out of.
Have you got a date for him to visit as the last i heard he was in Canary
Wharf in London doing some teardowns on some centrifs and likely to be
there for a while from what i hear. Failing that get hold of Graham Taylor
or Dave Pratt of Birmingham.

Hope it all goes well

Gibbo

[Dallas Duster]

Gibbo can you turn on your private messages ?

[Gibbo]

TGL

For some reason when i try to access my private messages a message tells me i am not allowed to access this. Will contact the site to see what the problem is and let you know.

[redroge]

cheers gibbo
will wait until weather warms up for more of a load as small chiller is coping at the moment.

[lirunaway]

Does the chiller have control of the chill water pumps?