RTHD , oil return issues .

[maxpower]

you have mail. happy reading..

[klove]

put your email address in your profile. I could send ya some stuff.

While you're in the mood to send stuff..........




Many thanks!

[maxpower]

hmm I see a money making thing here..lol!

[maxpower]

you have mail. happy reading..

my lazy reply..haha

[CumulusMech]

Thanks maxpower . Part two got snapped up by yahoo , something about it needed to be cleaned or something . if you have the time maybe you could resend it ?
Thanks Graham for your input . If I get stumped , like flying by the of my pants, I will invite you over . For now I would like to try .

Regards to all

CumulusMech

[Healey Nut]

No problem Cumulustech ,you know where I am .

[Doesn'tPhaseMe]

These machines are critical when it comes to oil / refrigerant charge .

Absolutely 100% correct. I remember other guys going through this and the factory said DO NOT ADD ANY OIL. What guys would have to do is get an electric refrigerant pump only used for 134a and pump liquid refrigerant out of the evap into the oil seperator and let the oil heater seperate it and refill the oil level that way. Unfortuantely this process takes time, like overnight and is a PITA.

I also remember there was something about the liquid level sensor and the way some were piped in that could cause erratic reading. I cannot find the service bulliten but make sure all the piping to and from it goes up hill and does not create any type of traps. Also these machines need to be level, if it settled that could also effect your liquid level sensor. I never had one loose oil but I can't see the liquid level effecting your oil level either.

[maxpower]

Thanks maxpower . Part two got snapped up by yahoo , something about it needed to be cleaned or something . if you have the time maybe you could resend it ?
Thanks Graham for your input . If I get stumped , like flying by the of my pants, I will invite you over . For now I would like to try .

Regards to all

CumulusMech

I resent it. Its just a demo on the CH530. The first one is the one about the oil system,operation,etc.

[chillerguy81]

Maxpower, If you don't mind, I'd like to see that info too. Thanks.

[maxpower]

Maxpower, If you don't mind, I'd like to see that info too. Thanks.

alrighty..you have mail

[chillerguy81]

alrighty..you have mail

Thank you Sir.

[CumulusMech]

I have a building operator who has used one of these machines in a free cooling application . I don't think these machines can be used in a free cooling application . Despite this, could this have caused oil migration to the condenser and have contributed to low levels in the oil reservoir ?

[Doesn'tPhaseMe]

I have a building operator who has used one of these machines in a free cooling application . I don't think these machines can be used in a free cooling application . Despite this, could this have caused oil migration to the condenser and have contributed to low levels in the oil reservoir ?

You might want to check the condenser water temperature as well. RTHD's don't like the ware too cold. Had same problem which raising condenser water temp. corrected. As has been noted in previous threads need bypass and maybe fan control to control water temp.

Maybe when the operator finally discovered that you can't free cool with these chillers he put it back in mechanical cooling with the cond water way too cold and created the problem.