Did you open up the first 2 compressors to see if the motor falure was due to a mechanical failure (ie; broken parts or worn bearings from loss of oil) or were they electrical failures (ie: single...
Type: Posts; User: refer dude 2479
Did you open up the first 2 compressors to see if the motor falure was due to a mechanical failure (ie; broken parts or worn bearings from loss of oil) or were they electrical failures (ie: single...
I have the same factory service manual. My point is that if you set the oil failure lower than the point that the compressor is able to load then you will end up with more damage to the compressor....
what a concept!!!This guy was ahead of his time. Easy access to the txv without getting cold. Looks like originaly he even provided protection from the outside world.
A True Visionary.....
5H and 5F should be set to trip at slightly less than 30 psi. If the oil pump can not develop at least 30 psi the compressor will not load and if it runs unloaded for long periods of time the...
Well it's been slow for me too, but it was self...
Well it's been slow for me too, but it was self inflicted. About a month ago the wife and I went camping with several freinds at Pismo Beach. Had a great time up to the last day when we all rented...
Similar story.................
Building a new grocery store about 12 years ago. 2 racks with a 2 circuit evap condenser to be mounted on the roof. Total tonage for the tower was about 300 tons. I...
wow how does it get posted twice?? just reliving the story is causeing a slight drunkenness
I think my best story is the time that a few of use got together after a rough day for a quick on at the bar before going home. (This was quite some time ago when driving drunk was against the law...
I think my best story is the time that a few of use got together after a rough day for a quick on at the bar before going home. (This was quite some time ago when driving drunk was against the law...
The big thing that jumps out at me in this one, if I am reading the info correctly, is that the compressor is drawing almost 15 amps more than it should for the conditions you give. (You state 21.5...
41?? spring chicken!!
52 here
I'm in the same boat as Ned. Union Grub. Rules here state that anything other than baisic hand tools the shop provides. Much like Ned have chosen to provide most of my own tools so that the quality...
One guy that I worked with for years believed that the pager actually knew when he was going to bed. So he swore that he went to bed with one shoe on and kept that foot planted on the floor in an...
Yeh, the sadest thing in the world is to start up a nice new pretty store and see it run trouble free for a year or so and then to watch it slowly deteriorate into a crap hole over a period of about...
Ditto. Keep it simple. Unless the owner wants a whole new system use what you have and change the condensing unit to 134a
A receiver is in the high side of the system and is in between the outlet of the condenser and the liquid line to the txv. It serves are a holding vessle and a surge tank for the liquid side of the...
Andrew,
I am sorry if I have offended you, but the truth is that you do not seem to have the foggyest idea of what you are doing with this unit. You are right in that there is very little differance...
[QUOTE]Originally posted by condenseddave
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Hire a reputable company to troubleshoot and repair. That will give you time to find a differant line of work. Sorry for being harsh but you don't seen to understand refrigeration.
There is no one book on rack systems because they are esentially built up systems using a variaty of off the shelf items that the manufactures purchase and build into "Their Own System" in an attempt...
This thing is a collectors item. Bendix Westinghouse has been out of business for at least 25 years. The compressor has probably given up the ghost. get a whole new condensing unit. Make sure it...
Have quite a few that I could share. E-mail at mdemma@aol.com and we can swap. I find the DX-9100 a very good controler because it is not device specific.
have to say that duct tape handles the moisture better than electrical tape
oh yeh and...........
every leak you fix on a refer rack is at a schrader valve and then you add 300 lbs of gas.
hahahahahaha
you jump out the oil safety because it keeps...
you jump out the oil safety because it keeps tripping
what is it on. a/c, refrigeration medium temp or freezer????????Open case, coolerbox, ????? Need more info.
and i don't think there is going to be a simple formula
If you think every call you take will involve playing with the tx valve some
how else do you check to see if you fixed the beer cooler
Low pressure low temperature liquid is pumped from the pumping receiver to the coils. The coils are flooded with liquid refrigerant and the return line from the coil goes back to the pumping...
looks like a job for DEMAND COOLING MAN!!!!!
Never seen this before. Went to the web site and saw this...
When the condensate reaches a pre-set level in the Accumulator, the “CONTROLLER” (2) opens the normally closed “EXTRACTION VALVE” (3)...
Take the job. Restraunts and small refrigeration is a great place to learn refrigeration. If you do make a mistake, as we all do from time to time, you will not be causeing thousands of dollars worth...
I worked on single compressor low temp r-22 when I first got in the trade in 1973. Some of these systems had been in for at least 5 years. Hussmann was pushing the idea at the time. Then the local...
Here on the west coast ammonia is only used for industrial applications or special "heavy" commercial applications because of the health hazard to the public. When I first got into the trade, 1973,...
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very nice.
and a p.s. to my earlier post.......
almost all of the installations ( at least the ones that I have seen) you can eat off of the equipment.
you have to get the face parrallel top to bottom first. then get the top to bottom shimmed in. these two steps are the easy part cuz you can sort of do some math with the dial readings and how many...
amen to that. and even the lion tamer gets attacked some times. just ask roy.
Ammonia is refrigeration for big kids. It is just a refrigerant and as such you could build a system similar to any cfc/hcfc system. The differances arise due to the nature of ammonia and not because...
What is the temp ahead of the filter drier, and what is the head pressure and where are you measureing it. I would suspect plugged driers.
What is it that you are after? If you are working on a package unit (A/C) that has no receiver then there is a relationship in that the more refrigerant you stuff in the system the more subcooling...
if you don't have a problem don't fix it.
The place I work for will fix anything for the customer as long as THEY pay for the repair. If they are due a warranty on something we did not sell then they are told that it is THIER responsibility...
Ray Winther Co. which became Hussmann San Francisco was making 2 stage R-22 systems as early as the late 60's. They were built with direct drive 5F and 5H Carrier compressors. There are still quite a...
I am assuming that when you say discharge temp you are refering to the temperature of the discharge line leaving the compressor.
If you have a high discharge temp on this two stage machine check...
I do not buy into either of these explainations. First off, if the vent line is properly installer it will have a check valve in the line that allows flow in the direction from the receiver to the...
Been out of the loop for a couple of days nurseing my wifes broken foot. Am going to print this and see if I can get my train of thought back. There seem to have been some interesting twists to this...
[QUOTE]Originally posted by lmtd
[B]
I do not believe that anyone is implying that the subcooling is happening in the receiver. Where all of this started was how do you explain the existance of...
Did the box work at some point before your were sent out there or is this a new install. If it is a new install you may be a little short on capacity but you should be doing better than you are. If...
On many of the receivers on the larger rack systems the inlet pipe from the condenser enters the receiver at the bottom of the vessle and as such is under the liquid refrigerant thus blocking any...
Stick with certified Copeland rebuild or new. It will be cheaper in the long run.