what ever fridge. your the one dreaming up controversy. Pat is a fine mechanic. As is JP.
http://www.youtube.com/watch?v=PFb6NU1giRA
It's your job to train your techs that your in charge of, right? Sounds like your not doing a good job of training your techs if you constantly are going behind YOUR guys. Don't be so PC. You make others afraid to ask important questions out of fear of responses like yours.
what ever fridge. your the one dreaming up controversy. Pat is a fine mechanic. As is JP.
Touchee! Your right about me. I'm not going to waist the customers time trying to set a valve in conditions that are not favorable to set it. As long as I have a strong receiver level, the amount to which depends on ambient, I can be PC too, I will leave the store and sleep well all night long knowing when I go back to change a motor or whatever if the conditions are favorable to check it, I will check it then. That's just me though. Yall can waist your customers time messing with a valve that doen't need messing with so yall can sleep well next winter however how many months away that is.
My intent is/was not to berate you. In hindsight, my response to your post could have and should have been presented in a more tactful manner. For that, I do apologize.
That said, to make an assumption that the only time a holdback valve needs to be set is during a store commissioning is short-sighted at best. But then to also suggest disregarding any attempt at setting the valve during higher ambient conditions does seem to indicate a rather flippant attitude toward the customer as well as the job we are paid to do.....IMHO.
We get paid very well to do our jobs right....the first time. How does pushing off the proper setting of a valve equate to anything other than laziness and/or ignorance? If it can be done, it must be done (again, IMHO).
For the record - I'm not in charge of anyone. I don't have 'guys'.
The process I described earlier has not failed me yet. I'm not saying it's the only way - or even the most efficient way to set the valve in the summer.....just that it seems to work for me.
It sure would be nice to get back on topic and discuss/debate how to accurately set an A8 valve no matter what the OAT or system conditions rather than personally attacking one another.
"The problem is the average person isn’t tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and it’s not in the movies they watch, and it’s not in the few books that they buy, they don’t get it" - Jack Canfield
"The problem is the average person isn’t tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and it’s not in the movies they watch, and it’s not in the few books that they buy, they don’t get it" - Jack Canfield
At one point or another, a number of the guys currently commenting on this thread have slapped me down over the years. Sometimes without any lube. Those slapdowns are responsible for a fair portion of my wages today. Don't take issue with these guys, Fridge, take their advice.
Bottom line is don't mess with the A8 A9 valve unless you have fans cycling on and off on your condenser because your just waisting your customers time. Make sure you have a good receiver level and you will sleep fine all night long! And if you don't have a good level LEAK TEST.
Nope...but maybe others will like to know.
"The problem is the average person isn’t tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and it’s not in the movies they watch, and it’s not in the few books that they buy, they don’t get it" - Jack Canfield
"The problem is the average person isn’t tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and it’s not in the movies they watch, and it’s not in the few books that they buy, they don’t get it" - Jack Canfield
PL...........you know if many D's has a simple/easy answer it means we can expect about 3 full pages of single spaced text, right?
"The problem is the average person isn’t tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and it’s not in the movies they watch, and it’s not in the few books that they buy, they don’t get it" - Jack Canfield
Lets give me hypothetical.
I want my minimum receiver pressure at 55SCT/R404A=115PSI. I want my dropleg 20 PSI Above that at 125 PSI, so at 60 SCT. This is my desired settings.
Since the discussion is about if the ambient is higher so that 60 SCT is unattainable normally here is what I was taught, what I would do, have done and it works.
1. valve off the receiver pressure regulator so it does not influence. Whether is an ORD or OPR.
2. Force all the condenser fans on.
3. reduce head by turning off pumps.
If the head psi is still above the target 60 SCT, let's just say it is at 70 SCT / 150 PSI at this point and I have done nothing yet. No problem.
4. Turn clockwise (in to raise pressure) the holdback in 1/4 turn /5 minute increments till you reach a pressure it will control at above the current pressure of 70 SCT.
What your doing is making the valve to holdback at the higher sct. The higher the ambient, the higher we need to find the controlling pressure in current conditions. I am using this as an example.
5. You had no idea before you started where the setting was at. But you counted how many 1/4 turns Clockwise to get it to control at the 70 SCT. So. Simple math. Subtract the difference of the current head psi which is 150, from the desired, which is 125 or rather 60 degrees SCT.
That difference is 25 PSI.
6. Divide 25, by 17. (17 is the available 1/4 turns in a typical parker holdback valve).
7. 25/17. That equals about 1.47 or so. Round off. 1.5 turns. So basically turn the valve adjustment 1.5 1/4 turns counterclockwise.
8. For the reciever ORD. Just isolate drop leg now, let the receiver pressure fall below 115, open that one till you get feed.
Thats it. It works. I have done it. I thought when this idea was first presented to me it was nuts. I went out and I proved it to myself. It works, I have went back in cooler weather to check on and it was close enough that I did not feel it was needing to be "tweaked".
Now.
You can do all that. But. A sprinkler works too.
Not only have you wasted your time & your customers time...you have now wasted MY TIME TOO! and I'm pizzed!
Really tho, thank's for the explanation.
Mathew, quit being a smart a$$ cause I know you knew this.
I live in an area where condenser flooding happens 2-3 times a year.