Results 27 to 39 of 49
09-05-2012, 09:21 AM #27
I don't see it either.
Regardless sight glass should not be used to charge this unit.
Pressures and temperatures
Is all u need.
09-05-2012, 09:46 AM #28
09-05-2012, 02:51 PM #29
09-05-2012, 08:57 PM #30Professional Member*
- Join Date
- Feb 2007
- Sulphur La.
I would have to check the piston as it looks like it is stuck in the fitting and bypassing refrigerant. Sometimes I have been able to seat them by rapping on the FCCV with the handle of a wrench.
On stubborn ones you have to pump down and open the fitting.
Being a pump the piston does move in and out of the seat and can gat stuck partially open.
09-06-2012, 09:23 PM #31Regular Guest
- Join Date
- Aug 2012
Forget about the sight glass and use your charging chart.
09-11-2012, 04:22 PM #32
Agreed, forget the SG.
Get a charging chart.
I have a nifty app on my smartphone that says with those conditions ( 70 Outdoor Ambient, 60 Indoor Wet Bulb ) You should be around 23.5 Subcooling (if TXV) or 15.7 Superheat (If using a fixed orifice)
Hope that helps
09-11-2012, 04:47 PM #33
I'm in for the SH number, Not so sure about that SC number!Make your expertise uniquely valuable.
Make your influence uniquely far-reaching.
09-11-2012, 08:34 PM #34
09-11-2012, 08:40 PM #35
09-11-2012, 09:06 PM #36
What do you mean paper is green.
09-11-2012, 09:10 PM #37
09-12-2012, 07:54 AM #38
09-12-2012, 05:07 PM #39
FWIW, I had a similar job a month ago. SC was where it was supposed to be but the SG was not clear... I was told a TXV needed a full column of liquid to work properly so I kept adding juice. I couldn't clear the SG to save my life... After way overshhoting the SC and still seeing bubbles, I decided to forget about the SG and just focus on the SC.
Hope that helps...