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Thread: Single door freezer pressures?
02-17-2011, 11:23 PM #1
Single door freezer pressures?
victor vf-1 stand up freezer about the size of a household refrig.
I never messed with anything this small, but im trying to help a friend out.
Compr was shorted. Replaced that with a copeland AFE13C3E-IAA-103
No tags saying the 404a charge amount to put in, So I charged up with little under a pound and then let her boogie.
Shes showing 14 low and 165 high with a slightly dirty condenser... came down from 65 temp to 45 deg within 15 min or so .. then I got tired and went home.
Im going back in the morning to clean the cond. What pressures should this thing read fellas ?
02-18-2011, 09:14 AM #2
ok, went back and cleaned coil, gave her a couple more squirts and the head hit 220 on high and low 22 with evap coil hitting -10 deg
Im pretty happy with that I think ....
Is that close enough ?
02-18-2011, 09:16 AM #3
Would be even closer if you weighed in the charge!
02-18-2011, 09:45 AM #4
No, Most data tags just get you in the ball park. thats where knowing what you are doing comes into play. Plus you you have to consider things like dryer sizes and hose length, ect.... superheat and sub cooling are your friends use them and you cant go wrong, don't and you are just guessing...
Hope this helpsIsn't sanity just a one-trick pony anyway? I mean, all you get is that one trick, rational thinking, but when you're good and crazy, well, the sky's the limit!
02-18-2011, 09:01 PM #5
I do mostly heatpumps and the occasional walkin - box' and hardly ever use sc and sh unless theres a problem I need to chase down ... but to simply change out a compressor I just go by pressures, or weigh in if theres a tag there and im outta there
Actually I will drop a therm in a vent and check that temp versus room temp.... Then im outta there!
02-19-2011, 01:29 PM #6
Thats nice then the people that are getting 13 and up seer units are getting robbed as they are operating as 10 seer max, and worse yet the duct systems were designed for .5 wc and most 13 seer units are .3 wc max.
Its a real shame that people don't have enough pride in there work to make the systems work properly... I'm getting tired of cleaning up after other companies, its a sad sad thing going up to a persons house and telling them their new system is undersized and ductwork as well. Thats why I try to stay doing commercial and industrial but there are problems there as well, ohh well job security I guess...Isn't sanity just a one-trick pony anyway? I mean, all you get is that one trick, rational thinking, but when you're good and crazy, well, the sky's the limit!
02-20-2011, 09:16 AM #7
When its slow, sure I will check other things while there, but when I have 4 or 5 serv calls to knock out all over town and the boss is breathing down my neck ... fuhgedaboutdit ... getter done and move on.
When I have a 70 low side, 245 high, cond is nice and clean, its 95 deg out, 10 - 12 seer unit which we see alot here, im happy.
At that point you wouldnt even have to go inside to check anything else if your ego was large enough.
Ok now its your turn to say something else pessimistic there Mr i do everything perfect
02-20-2011, 10:02 AM #8
Your customers are not getting what they pay for!
02-20-2011, 02:00 PM #9
You act like you are the onle one.... I've been looking for help for over 3 years get abunch of applicants but out of 15 questions most get only 2 correct and they are t/f 50/50 chance there, so I know about racing around town and so do most of the people here but that doesn't mean cut corners.
"Ok now its your turn to say something else pessimistic there Mr i do everything perfect "
As far as that comment I don't need to say anything to it, my work and reputation speak loud enough for me than to argue with youIsn't sanity just a one-trick pony anyway? I mean, all you get is that one trick, rational thinking, but when you're good and crazy, well, the sky's the limit!
02-20-2011, 02:04 PM #10
pecmsg - You know Ditto just doesn't cut it...
Very well Said !! Much Better
02-20-2011, 02:12 PM #11
So you rather me stay there another hour checking all kinds of stuff costing them even more money in labor?
When you get there shove a thermometer in a vent, fix whatever was broke, get pressures right, change filter, take a gander at the AH coil if you can, and roll out.
02-20-2011, 02:41 PM #12
It does not take that long to check those things also keep in mind airflow plays into your pressures, we are just saying if you are going to do a service cover all your bases and you may find other issues that can generate more money... I run the division at my company and as long as the job is done correctly and the customer is happy I never get on my techs for speed at which they get their call done as long as they get it done properly, we are mostly are a commercial business and do some residential and its pretty bad some of the things that are found because of rushing and lack of knowledge and its the customer that always has to pay...
But I remember the days working at other companies and 4 o'clock rolls around and they are tellin me are you ready to write down your last 4 calls. Still never cut corners just sometime had to get them up and reschedule to complete properly.. So I'm not trying to bust your chops , I just think think the customer deserves to get what they pay for.