This video is brought to you by spore'ln quality, integrity and tradition. Okay, so we've got a complaint that we've got a warm walk-in box and this is a convenience store. Listen to that sound. I bet you anything that we're low on refrigerant right now, not to me sounds like an expansion valve, so we're gon na jump on the roof and check out the condensing.

You know I don't see any ice present. So this is my condensing unit right here. So it's running it's our 22 unit, we're gon na open everything up, so I just shut it down, but it was definitely flashing. I like to pay attention when I take service caps off the first thing is: look at this one.

You want to look to make sure that the caps have the o-rings. This one does there's definitely some oil inside the cap, which is an indication that there is refrigerant leaking out of that. But I don't see oil around it, so the cap might be stopping it because, once I put my gauges on here, it's gon na be hard to leak, check those ports and this one doesn't have an o-ring at all and there's definite all around it. But there's no oil on the fitting, so we're gon na definitely not stop with that, but we're gon na check everything so yeah, I'm just looking to see if I see anything obvious and I don't this one's gon na suck because it's in our 22 unit.

So it's gon na be a bit pricey. I'm gon na go, engage up and check it out; okay, definitely definitely low. So before I add gas to this unit, I'm going to look for a refrigerant leak. So what's happening is the head headmasters bypassing it's hard to say whether it's just short, the winter charge or whether it's the full charge of the system? So it's kind of hard, judging by the size of that receiver, this is going to be at least an 18 pound charge total charge for this unit, at least so.

I'm gon na do a quick leak check before I go any further and then that'll determine where we're going to go with this to do a leak check. What I'm doing is I equalized out my gages turn the system off and open up the high side and the low side. So I'm equalizing the pressures between the two and then I'm gon na go start at the eave opps and check for leaks, anything jump and obvious in here. You know I'm just kind of looking for signs of oil.

There's a mechanical fitting. I don't see anything. I'm looking for something obvious right now and then then we'll start getting into the nitty-gritty, but I don't see any oil marks or anything on that condenser. No big oil marks on the condensed refrigeration lines.

Nothing really in here! That's jumping out and scaring me at the moment so we're looking for a pretty good accumulation of oil. More than likely so we'll go look at the expansion valves and the evaporators. So we're looking for obvious signs and notice. There's oil all up in there and I can hear it.

This is one that I didn't even have to get out the leak detector. It's a big old fat leak around that. So it's hard to get it on camera, but it is leaking right in here. So it's a weldable leak, put a braze joint on it.

I'm just gon na put a bunch of solder in here. I did inform the customer that you know the coppers really starting to pit out and rot away, and it's something they're gon na need to consider some kind of a replacement eventually, but you know we're okay, for now, I'm gon na go ahead and put a braze Joint on there and then vacuum the unit down change the liquid dryer, and I will also check the other coil to for leaks, but this one's so big right now that I want to get this one fixed and then we'll go from there. You also got to be careful too, when you have something this old. When you light that torch, you can create other leaks too, but we'll do our best to get them running.

Okay. So what I'm gon na do is. I went in and closed the valves on. My gauges, the pressures, did equalize out.

I'm gon na go ahead and front-seat the king valve on the receiver. That one has a packing. It's not packing up. First, before I go too far times I get ahead of myself.

It's kind of leaking up the top guess of the way that I have the setup. That's my liquid line down there. I've got access on the service table on that, and then I have got my suction line open up here on the roof, so it could be purging nitrogen and we are there's a small nitro purge went out of this. You may be able to hear that so very small nitro purge coming out and using this Western enterprises regulator.

That's alright does what I need it to so. Anyways, we're gon na go downstairs and stand up that joint and put a Lea beat of solder on it and try to clean it up and the sand the whole fitting, because the braze joint is going to encompass everything. So you want to make sure you cover your basis, there's a lot of nastiness on. I think that is an ugly bugger to get in there and get that extra stuff.

I almost need like a rotary tool or something to get in there and sand that here on the top, we can right up top right there, I'm over here, struggling to sand this Milwaukee 12-volt, that's what I'm talking about hell yeah little die grinder whatever you want To call it and that dremel copy that worked out really well, that little thing kicked ass man, you got it shiny, clean, it's kind of hard to get in there and see that, but boy, that's good, so we're gon na lay a phat beat right across that All over that whole thing and they went crazy with it trying to seal up anything on the top. Hopefully we didn't cause any other leaks, the Nitro pressurized right now, okay, so I'm letting the nitrogen out of the low side right now remember. High side still has normal r22 in it low side has the nitrogen did a pressure test in the leak test, so once that's done, we're gon na hook up the vacuum pump. Now this is an instance where I'm not gon na get my big fancy hoses out because we're not gon na get a perfect vacuum on the system number one anytime, you have a pump down system, especially with old valves like these.

They always leak by so you're. Never gon na get the ideal vacuum, and this is not gon na take very much time to vacuum this down, Plus. On top of that, I guarantee this unit has more leaks so, and it's also raining right now, so I'm not gon na change. The drier we'll come back and do that.

I just want to get it dehydrated as best as possible and we'll come back and change the dryer, we'll bring it up to the customer and see if they want to do an equipment replacement or whatever. I'm just trying to get them operating right now and trying to get out of the rain as soon as possible. It's not like pouring rain, but it's just enough to annoy the heck out of you and everything's wet so, and another thing too, is is that you know, since this is a pump down system, there's still refrigerant, that's boiling out of the oil the entire time. So, in all reality you know there's still refrigerant pushing out of the system so, but I always, you know, stress, to change the dryer whenever you open up a system and I'm gon na come back, but unfortunately because it's raining, I don't want to do it right Now so my glass is running clear, liquid line level and the receivers good I'm gon na get some new caps for these guys and then yeah we're just kind of wrapping it up.

Okay, we're back up and running systems charged it's coming down in temp. Getting cool in here open up. This whoa make sure there's no giant leaks in here. I'm gon na take the information down off the walk-in box.

It's a nine door. Convenience store, cooler, nine glass doors, one main door and I'll take the dimensions of the box. So that way who wants me to go ahead and get him a quote? We can do so all right. That was a service call on a walking cooler for a convenience store.

Like I said it was a nine glass door. Cooler with you know, just one big door on the side. Two coils inside it was low on charge, found a rather large leak on one of the distributor lines coming out of the expansion mouths you guys saw. I went ahead and was able to find that without even having to get my electronic leak detector out.

Sometimes we can be lucky, I did after all was said and done leak check the other coil to nothing. It was just that one, but the other coil is just as bad a shape as the first one, so you guys saw sometimes when you're, when you're brazing on these older systems. You know you got to just blanket the thing with solder, so I used you know. Quite a bit of solder on that more than you really should on a joint, but you just got a bugger it up to make sure that everything's good, and you know that also goes to when you're, when you're doing anything with a you know and you're gon Na braise on anything, you want to sand more than the area that you are working on because often times things happen, you may be laying some sofas on a joint, and you know you may accidentally or inadvertently unbrace something else.

You may cause another leak. So you always want to think the worst case scenario when you're getting ready to braise something okay and you want to sand the heck out of it. So you know I went ahead and sanded up that thing really thoroughly laid solder all around it up top and bottom and everything - and you saw that I used that little Milwaukee rotary told I think, worked out really nice. Luckily, in the same parking lot as that convenience store was a home depot, so I just walked over there and picked that thing up with a little stainless steel brush on it and you know, was able to get right into those little nooks and crannies and get It all cleaned up, but anyways you guys saw - and you know not everything's perfect so on this particular visit.

I didn't get to change the the liquid line. Dryer I did go back. I talked to the customer know that I wanted to come back on a day when it wasn't so wet outside and he was cool with it. So we went back and just changed out the dryer and we're in the process of giving him a quote to replace some evaporator coils, and you know that's pretty much it.

Okay. I really appreciate you guys taking the time to watch these videos and we'll catch you on the next one. Okay.