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The only cases i work on are small 100 grams but most supermarkets here are now bringing it in on all the upright cases aswell,correct there is no stenching agent in r290 a lot of people might not...

the real engineers came before us like my father ,they worked with flammable ,exsplosive and they had no recovery units or vacuum pumps or any stuff like that ,they were real techs and pioneers,laid...

My father is a retired tech too he got a bad burn on his hand from a metyl type refrigerant years ago,i was crapping myself the first hc fridge i fixed but its like everything else you just get used...

That video is only showing how to service without a flame,its perfectly acceptable to take a torch to a propane system once the dryer has been cut out and the system flushed with nitrogen a couple of...

these house type units not really in use here ,do they not come factory charged ,most ac here comes charged with specific weight of charge to be added for extra lineset lenghts ,makes life easy

Luckily in europe its legal to vent hydrocarbon refrigerants .There are limits to the charges allowed in indoor cabinets 1kg in a basement,1.5kg on a shopfloor,2.5kg in a storeroom.thankfully the...

Have been repairing r290 chest freezers here for a couple of years no explosions no dramas , best way to work on these is to wheel them outdoors.

Yes also have one ,great if you can silence the area your looking,mighty in plant rooms power everything down and youll find the tiniest leaks .

Problem with fan cycling on single units is it plays havoc with sight glasses .if fan speeds up quickly its drops condenser pressure quickly and pulls liquid back into condenser and bubbles in the...

Yes r407f starting to be put into medium temp racks here .R407A ,C & F all made up of the same 3 gases just different percentages (R32,R125,R134A)

Sounds like its possibly been overcharged .I would ignore sight glass and charge system measuring subcooling off condenser and superheat off cooling coil

I have come across this alot also.they seem to suffer on compressors with a sweatback to the suction with the water running down onto one spot on the heater

I use a digital manifold for service work ,but use a 4 valve analog to vacuum ,commission new plants .

yes thats it,very handy device for its cost.got mine posted out from a crowd called srw in the uk .they send our company regular fliers of their wholesale products.they have a website also.

I have a small primalec ultrasonic tester and find it invaluable also use a dtec select sniffer never fail to find leaks between the two

whatever you do dont put it on here youl be sent a message that looks very worrying dat inda end is nothjng

have you checked for partially blocked drier

from experience have to be careful changing any old system to 404 gas it will clean the system and will deposit years of gunge at driers ,filters sumps etc regards

looks like an a/c direct connection compressor not meant to have rotalocks?

thanks for the tips guys

hi guys recently purchased a digital manifold for the single purpose of getting more accurate readings at low pressure of r290 on static freezers ,turned out i had to send them back as they wouldnt...

ive seen compressors seize after 24 hrs operation ,exspansion valves blocked completly on systems where leak test dyes have been been used ,you would want to be really stuck to use these, also most...

hi we used to fit low pressure switches on these machines to stop the water pump until they froze the barrel evenly made for much softer starting not jumping all over the place also extra salt might...