The same guy whilst carrying a unit across the joists of an attic fell through the joists and was only saved by his large girth.
Cheers taz.
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The same guy whilst carrying a unit across the joists of an attic fell through the joists and was only saved by his large girth.
Cheers taz.
Maybe as a spin off to this thread you could add the best excuses you have come up with after making.... operational whoopsies?
Surely the most popular one is blaming it on the previous engineer, who happens to be your largest competitor?
Many years ago I went to commission a new AC system serving a restaurant. Day was very hot. I was told system had a holding charge of R22.
Started comp and suction just dropped, added more gas - no change.
Check system found liquid line from condenser connected to the reciver connection marked ontlet !!!!!! (Both connections on top of LR shell - outlet being fitted with a dip pipe). lliquid from receiver comming from top of receiver shell.
Only option, as managed of resturant getting most upset, but to blow off complete charge. Approx 80 lbs. R22. (Global warming had'nt been invented in those days)
This affected the sensor for the AC system and turned on FULL HEATING. Restaurant manager even more unhappy!!!!
Latter when mentioning problem to the installing ENGINEER ???????? he said he did not know that one of the receiver connections had a dip tube and his arrangement looked better.
Happy days
Mick
Hi all new to this but laughing a lot all the same.
Went to look at an existing R22 rooftop package A/C unit that the encumbant engineers had been unable to determine the problem. They said that it was sort of working as there was a TD across the compressor but that there didn't appear to be any action on the indoor section.
We had a look over the unit and there are two 25kW circuits. After a brief check we found that there was a blockage across one of the TX valves. We suggested reclaiming the system and checking it out.
This is what we found...
I think they need to work on their maintenance regimes a little more.:rolleyes:
Cheers Mike
Did anyone read the article in H & V News this week about fixing AC condensing units?
Don't want to blame the Tech but he should have questioned the installation.
Contracted out a ducted central, unit is 60,000 btu but won't cool. I check subcooling and determine unit is undercharged so I evacuate and recharge by weight.
Suction is so high I decide compressor must have a broken suction valve. I arrange for a new compressor and pull the old one.
This is Great!
Result: The 1 1/8" (27 mm) suction port on this sealed compressor was dented in leaving aprox. a 3/8" (10 mm) opening, but the factory brazing machine sealed the lip of the 1 1/8" (27mm) copper tube below the dent so you couldn't see it.
I used the new compressor and sent the original back to the factory :)
I had one when i was an apprentice. The company we were working for had employed there own "engineer" but we were called out whilst this guy was on holiday. Being a few years ago when R502 was being phased out he had decided to run this blast freezer on R22, which would have been fine except that his retrofitting skills only ran as far as letting out the R502 and charging with R22, he did'nt even change the TEV's. By the time we got there the poor 25hp Sabroe had holes you could put your finger through in the pistons.
Simon
Whats wrong with these pictures?
First picture, the tear in the trouser, :p second one , you can't use a suction accumulator as an additional receiver.
Lol
Drier and suction line accumulator should be blue to match the unit:D
Is that a L'unite lecky box on a Maneurop?
Jon
lol ghetto receiver! why that when they all ready have one? lol thats just sad! Poor plant!!
Talking of blaming the previous engineer (taboo) I once spent about half a day trying to find a leak that had all but emptied the system, this was a chill cabinet with a remote condenser on R12. Eventually gave up under pressure to get it going from both client and boss, recharged it and left it working ok. Got much grief from boss over not finding leak, young lads, not a proper engineer yet then etc, etc.
Then some time later whilst chatting to some of the older lads in the cafe one of them owns up to being out of gas at the time and robbed the chill cab to recharge the freezer coldroom on the same site, swine near split his sides laughing. No names mentioned but if you are reading this well done at reaching retirement age!
Saving on uniforms you have to get the most out of them.:)
Quite correct.Quote:
second one , you can't use a suction accumulator as an additional receiver.
I quoted on this installation some time ago but it appears we were to expensive.
The unit is a walk in freezer and the condensing unit is located above.We have had a quite a bit of hot weather and the ambient above the room was nearly unbearable.
Unit has been short cycling on HP control and potential relay failed.This unit will soon be outside minus suction line accumulator (on the liquid line). The oil seperator and the real accumulator will be bolted to the unit instead of floating in mid air.
I happened to pass by the place when it was being installed and asked the installer why there was an accumulator in the liquid line. He tells me that it is a liquid line accumulator. I tell him that that was a new one to me. He tells me that the wholesalers told him to install it.I then walk away wondering how long it will last.
Well it lasted about a year.
At least he got the flow direction correct:D .Although it probably would have been better in reverse.
The unit is an "Aussie blue star" which is Australian for "Manurop".:)
Electrical box is original.
In a suction accumulator, both tubes inside it are going to the top of it (besides the small hole at the bottom for oil return), so it must first completely be filled to the top before it starts to flow.
So it can't work in my opinion.
Hi chaps, I'm quite new here, does anyone have the generic fault codes for Hitachi splits?
See it, posted it in the wrong section, nobody will notice it here.
NoNickName, we have sometimes the same troubles with the market trucks: long lines where the receiver has sometimes not enough volume to store all the liquid when we pump down the system.
Well, there's a whole condenser to store it in eventually. And I love freezing it up when the solenoid opens. :D
Side note: we don't usually call it suction accumulator, but liquid strainer. It more gives the idea... it doesn't accumulate like a receiver, it strains liquid from vapour.
How about this one.Afew years ago I was commissioning on a supermarket refit,as usual the cases were coming on line in stages.As the weeks went by the last of the cases were fitted and then the problems started.The pack was running flat out and the cases were not getting temperature,suc press was almost 70 psi(R404).I got on to the project manager and told him I was having major problems with the plant, and he threw a wobbler "what the !!!! have you done wrong on the commissioning you useless !!!!"was his reply.I said that in my opinion the pack was undersized for the case duty,but he said the pack design duty was 15% above the case duty.The company sent in a "troubleshooter" to check my work.He started cutting risers looking for oil logged pipes and baisicaly pulled the job to bits and would not listen to me.After almost a week he left site and the problem was not rectified.The design engineer went through all his sizeings and said they were spot on.After almost two weeks of empty cases the problem was found.The case manufacturer had upped the sizes of the case evaps and had not told anyone,we had to put 36" on a condensing unit And the plant ran as sweet as a nut.
Hi Ronb
Who ended up paying for the C**k-up :confused:
As far as I know the case manufacturer got hit with the costs.I got lots of overtime though.
Yes.Were your cases manufactured by a company begining with N.
I work in the Transport Refrigeration side, as it is a small industry there's not many of us at it. The whole industry is short staffed.
Going back a few years we took on a commercial engineer who in his words was 'the dogs b******s.
After a few weeks in the workshop he was moaning about not getting the chance to get on site. A job came in localy and off he went, (just a simple N.P.T)
After half the day had gone with no contact from the 'Engineer' i was asked to call in to where he was on my way back to the depot.
"There's something wrong with the compressor, I know the engine's turning the right way but the compressors running backwards the pressures are the wrong way round"
Bearing in mind the compressor will run either rotation this was baffleing. After climbing up the ladders and having a nosey I told him what the problem was.
"You have your gagues on the wrong way round"
"NO I HAVE NOT, look i followed the pipework back to the compressor, there's the accumilator tank back to the compressor"
Thats the RECIEVER tank I said!!!
Why he followed the pipework back and missed the condensor doing so I do not know
that last story reminds me of a guy who started with the company I was with at the time . Sent him to a commercial refrig job. He came back later and was asked , how did you go .. he said
"There was some bubbles in the sightglass so I let the gas out until there wasnt any bubbles" ! :rolleyes:
He was marched out of the place .
I guess the LP was at fault as well if it kept running after he worked his magic :D
And yet when it comes to capital spending... the cheapest usually wins...
*sigh*
hi
only today i was called to look at a split that wasnt working , when i got there it was going out on hp. checked unit out and it was running ok for a couple of hours and then cutting out. i decided that it was ethier mostire in the system are over charged. the coils where clean and fans running ok aswell. when i started reclaimimg the gas i niticed that there should only be 3.7kg of gas in it. by the time i removed it all there 6kg taken out of it.....
some cowboy had been there before me...
service call by an engineer, complaint of system 'not doing anything.' gets to site alls looking good only thing missing is the pipework though! Wired and drain done, just not piped customer had paid bill though!
siting here going through all the stuff that I have missed reminded me of a very amusing story that happened to my son while he was visiting in december ( I get him when mommy decides she needs a break)
So said kid arrives in the middle of high season with all hell breaking loose and as all 6 year olds are they are inquisitive as hell, have to touch everything, hang on everything, grab screwdrivers and imitate Dad at every opertunity, and yes irritate the life out of Dad (aka boss) and all hired help!
Picture this "sitting in the guts of a 5 star hotel with a poolheat pump that is "blowing" digital controllers", so nothing beats a good old standard electro-mechanical unit, said unit gets fitted to the heat pump and like all 6 year olds, he don't listen!, he don't like shoes, he is on holiday at the sea, he doesn't WANT TO wear shoes, he stands in the puddle of water forming under the pool heat pump and hangs on the machine like all good monkeys will do and WHAMO!!!!
he does the spaso dance, shrieking at the top of his little lungs "it bit me, it bit me"
well first a concerned father sorts out the problem, and then a hell of a lot of laughter, and a few crocodile tears from monster child and all was sorted out.
the moral of the story is such "kids always know better, and no macine however firmly it is bolted to the floor still needs to be held up by a kid"
the cause of the "spaso dance" was the neutral was lying in water in the casing of the machine, the hotel got the bill to upgrade the wiring of the unit.
the outcome of this story: utterly priceless! can't wait till the kid turns 21 to repeat the story to his peers!
This reminds me of when i was younger helping out my dad by holding the lead lamp (briticent gripa, who remembers them?) so he could see what he was doing. " dad I'm getting a shock off the lead lamp!" reply " no your not "
fizz fizz fizz
" dad i'm getting a shock off the lead lamp" reply " no your not, shut up"
fizz fizz
" give it here i can't see OW!! I got a shock off the lead lamp" I think no sh*t sherlock. Turns out it had 72volts coming down the earth. You've got to love working on farms!
Cheers Jon
Got called out to a small grocerie shop. Dairy case not working. One of the guys adjusts the timeclock and "OW!" he gets poke off of it.
Hm..bit odd. Anyway so I unplugs it and take apart the plug to check whats going on..
Turns out one of the doughnuts who own the shop crossed the live & neutral and had wrapped a bit of foil around the fuse to stop it blowing..:rolleyes:
Change the plug and sort the wires and switch to see what happens.
BZZZZZZZ CLICK
Job done:) lol
Got a call from a moron who'd got an ALOC alarm (inspection door open).
I told him: "you've got the door open. Just close it".
(I hear him going to the building door and slams it).
"Still can't reset".