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Thread: rack flooding
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11-23-2007, 11:42 AM #14
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Rack flooding
Hey jaybee whats the 411 on this?
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11-23-2007, 03:57 PM #15
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Yes what's up.
Originally Posted by chilly123
Hey jaybee whats the 411 on this?I love the smell of phosgene first thing in the morning:
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11-23-2007, 08:01 PM #16
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Well didnot go back . An jorneyman did and when I ask did he find the floodback he had no answer. As far as i know it came in again and all the person did was get the rack going . Well, if i have to go back i got good info to go back with . So the 411 is it's an unresolved issue, but then again im just a dumb appr.
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11-23-2007, 08:34 PM #17
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ice, or frost automatically doesn't mean flooding.
"The only real security that a man can have in this world is a reserve of knowledge, experience and ability." Henry Ford
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11-23-2007, 09:00 PM #18
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well it might meduim temp system,iced up compressors common suction, 4 of five compressors are off on ofc and there is refrigerent visible in sightglass at the crankcase call has came back 2 times ,again just a guess didnt measure superheat at the comp.
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11-24-2007, 07:35 AM #19
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dow this is true its just another tool I use to start. Originally Posted by Dowadudda
I love the smell of phosgene first thing in the morning:
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11-24-2007, 07:44 AM #20
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jaybee is this a loop system ? ie commom suction and a common liq feeding
many cases. or is a single system feed?I love the smell of phosgene first thing in the morning:
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11-24-2007, 12:43 PM #21
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Brrrrr!!!!!!!!!!!! Originally Posted by Dowadudda
Last edited by powell; 11-24-2007 at 01:55 PM.
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11-24-2007, 12:56 PM #22
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Originally Posted by powell
what's wrong with that plenty of sub cooling.
I love the smell of phosgene first thing in the morning:
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11-24-2007, 02:02 PM #23
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No Demand cooling trips here Originally Posted by powell
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11-24-2007, 08:55 PM #24
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Okay crackertech, you gotta add a "n" to your signature that ends in moring. I can't sleep at night thinking about it. Originally Posted by crackertech
what's wrong with that plenty of sub cooling.
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12-01-2007, 12:53 PM #25
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If your rack flooding out as bad as it sounds like it is............this shouldn't be too terribly hard to pinpoint. Originally Posted by jaybee
My first guess would be a check valve failed (assuming gas defrost) or a heat exchanger cracked internally.
A fully open TXV will cause problems on a single compressor system but on a rack with a suction accumulator I haven't seen a single TXV wipe out a compressor yet...........not saying that it CAN'T happen.........just sayin'
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12-01-2007, 02:25 PM #26
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I had a rack about 8-9 years ago wash out the oil starting on a weekend duty weekend. Hussmann Super Plus
Would go to the store , pump out every thing , spend 2-3 hours and could find nothing.
This happened 3 times in one wekend.
Eventually found the heat reclaim 3-way valve pumpout line had been replaced with the 3-way valve 2 months before and had not needed heat pretty much since the install.
That weekend , the weather was changing so the heat was cycling.
When we'd show up the store was calling for heat so everything was fine.
The suction lines were fine at the header and any circuit close to cold we'd dig into the valves , but never really found anything.
When heat satisfied,the pumpout would flood like a sum*****.
The guy that did the 3-way valve upsized the pumpout from 1/4 to 3/8.
He was the only guy that knew this.
I think we cut in a section of 1/8" tubing to meter the pumpout.
Problem solved
That was a curve ball...
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