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All right.
We have a call on a walking cooler, maintaining like 45 degrees.
So come in here.
Got a thermometer in here right now, saying about 45.
Come up here.
It's not iced up
So we need to have a look on the roof and see what's going on up there.
It's definitely blowing cold air.
So we'll have to see.
But one thing I will tell you
is they keep leaving the door open.
These dang doors on top of the door issue
as these boxes see, these boxes are blocking the airflow.
Because when I moved these two boxes right now, a significant amount of air
flow started coming around here and they have them like partially
blocking that.
So it's already hard enough because this walking's like 28 feet long
and getting the air to the other side is difficult as it is.
And then you block off the fans and it makes it even worse.
So even though it's not
iced up, on the backside, I can still see some frost in here.
And it's interesting, if I look inside here, you can see
some weird frost in these coils.
I don't know if it'll come up on camera right now or not, but it's it's
ever so slight inside the grid over in here.
You see, it's not going to show on camera, but there's.
Like a little bit of ice inside the coil.
And then you come over here and there's
definitely some frost over here, too.
It's not really even.
So that's interesting.
You know, we could have a plugged up strainer on that txv,
but it's hard to say.
We're going to
go in and probe up on this guy and check the superheated, see what's going on.
We need to get that frost to disappear a little bit, too.
But it could just be that they're leaving the door open.
So the thing just runs and runs and. Runs all day long.
And then starts to frost up, you know?
So we pulled the top off the condensing unit and we're going to go ahead
and rinse this guy off.
It's not filthy, but this equipment definitely needs to be cleaned.
I was recently
working on this one, and I noticed they kind of looked a little dirty.
So we're going to clean them off or we're going to jump on this one
right now because I have the temperature controller
turned off downstairs to defrost out a little bit of frost on that coil.
So we'll rinse this guy off.
We got some of the Viper
flu venom pack on here.
So that coil, nice and clean, try to hold it more straight
because you're not getting the coil cleaner.
There you go.
Now you'll get it.
There ya you should be seeing that foam probably need to put a little bit more,
but I think you can make it work just spray it on there.
It's not that bad.
So we'll see how this does.
Worst case we got to pull the fan motors out,
but I don't think we're going to need to do that.
But look at that stuff coming out right now.
All right?
So this is pretty good.
I can actually see light through the condenser, so we're going to rinse it.
Got to be careful.
Coming through nice and dirty.
They don't do normal routine maintenance.
Whenever we get the opportunity at these locations, we want to clean this equipment
to eliminate potential service calls.
We are using.
Hot water right now, too, which is really nice
because it's really breaking that stuff down
and it's going through.
Like I said, you guys can't.
But I can see right here that actually you can see, right, through it to
so. We're going to give
everything else a rinse real quick, very carefully, without.
Ruining anything
clean the inside out.
Just get a little water in there.
It's pretty beat up, There's a lot of bird crap, too.
So we'll give all that a rinse and then we'll do this guy to
when you're rinsing these roofs these condensers off,
if you use the blue coil cleaner, I mean, any coil cleaners,
you really should be rinsing it off the roof, its
not the greatest thing in the world for it to sit and Dwell on it.
At a minimum, delute it down.
But I always like to rinse the dirt out of here, too, so that way it doesn't
pull back up on the new clean oil, you know what I'm saying?
And then I'm also getting rid. Of this pigion crap This
is a bunch of that.
I mean, it would be back anyways because the pigions come back,
just trying to get rid of some of it Clean the roof off just a little bit.
So we don't have to work in this nastiness
just a little....
I went ahead and probed up on the condensing unit.
So we've got the high side, we have liquid line temperature.
That doesn't really mean a whole lot because this unit does have a receiver.
And this is an older unit.
So it's not really going to have
very much measurable stuff going at all, maybe a degree or two.
The cool thing, though, because I'm using the field piece,
Jobling probes is they have that crazy wireless range.
Now, you also need to have good Bluetooth, have an updated phone,
you know, best case, Bluetooth, what is that 4.0?
The newest one, I think, or something.
You want to have the best Bluetooth possible, but I'm inside the walk in box
getting suction line pressure and suction line temperature and air temperature.
So it's currently 46 degrees in that box right now.
And I'm able to connect up here, so I'll be able to go back down there.
Now, keep in mind when you go inside the walking box,
it will get a little spotty because you're going through a lot of layers, right?
But line of sight, you should be able to get like a thousand feet
permitting that you have the best Bluetooth
on your phone, you know, and no interference and stuff.
But OK, we're going to go and turn this guy back on.
We'll leave the cover off and go downstairs.
It should be all defrosted.
There was just a little bit of frost and we'll check out the system operation.
So, yeah, we still got great connection to the roof.
Way to go.
Fieldpiece High side pressure. Temperature.
Yeah, that's great.
OK, so we got to turn this guy back on.
All the frost is gone.
So I'm just going to go to this temp control.
I put a dot where it was set at, so that way we can
play with it there to you.
And when you heard the solenoid I got a kick in.
We've got suction pressure.
It's on and running
you always want to make sure that you always mark those controls.
You never want to just go twisting on them because you could inadvertently solve
the problem without even knowing it.
So always mark where they were and then play with them
and then always be cautious.
I usually don't even like adjusting those very much,
but in this situation I had to.
So we're just going to watch it run for a few minutes,
make sure the sight glass is clear, and then watch it come down in tab.
Hopefully it's on and running for a few minutes.
We're still really high in 1045 degrees, but super heats not too bad
as far as the range.
I've seen it go up to 13, come down to ten so it's throttling where it should.
I called my technician on the roof.
We do have a solid column of liquid in the sight glass so it's clear
so we're just going to let it run for a little bit and see what happens again.
I just caught him leaving that door open again like it's broken
and needs to be replaced, but they got to keep it closed until then
and I'm trying to get them to let me put curtain strips,
but that's like pulling teeth at this place.
I really don't see much wrong with this unit other than they're just
leaving their damn door open I stood outside the door for 15 minutes
and closed it four times myself as the people walked in and out.
They're just not getting it, and we're looking fine in here.
I mean, you got a little bit of frost, but it's just because it's
cold, you know?
And there's a lot of condensation and humidity in here.
So I don't see a refrigeration problem.
We're still maintaining a decent super heat.
13 degrees again.
We're still running a clear sight glass on the roof.
I'm taking my probes off here.
The last thing I'm going to do is check the liquid level on the receiver
just to make sure that it's got enough refrigerant
for the head pressure control valve.
And I'm also telling them I'm not coming back out here unless it's
to install curtain strips because I'm I anticipate a service call this weekend
because it's 45 degrees in here and I'm not going to do it.
This is just silly because they're leaving the door open, you know,
so I don't have my thermal imaging camera today, but the liquid level's
right below the three quarter mark, right above the halfway mark.
I'm going to call that good.
The three quarter mark is just a failsafe.
That's the maximum amount of refrigerant you can put in the system.
But if you follow the head pressure control valve charging chart
Sporlans' 90- 30- 1 and calculated or if you talk to Russell
who makes this condensing unit, they'll tell you that you clear the site
glass above a certain temperature and then add so much extra refrigerant.
And I know that this system's right around like a third or a half way.
So I think we're good.
Yeah, we're going to wrap this one up.
I'm really pressuring them to let me put some curtain strips on there
until we can get a new door for this guy.
And this guy does have a defrost clock and it's accurate.
Says about 2 p.m.
And I think that's about what time it is right now.
2:13 p.m. So yeah, we're good on that.
Does long defrost in the middle of the night
and then a couple of defrost throughout the day?
We're actually going to increase that because of them leaving the door open
a couple more 15 minutes throughout the day
and then two really long ones in the middle of the night.
So we're going to tell him to keep an eye on it.
And then I'm really pressuring him to let me put curtain strips on there
until we can get a replacement ordered for this guy.
I come up on a lot of walking coolers and walk in freezers
that are iced up in this situation.
This wasn't, wasn't quite iced up yet, but it was on its way.
The customer called saying the box wasn't maintaining temperature. OK,
I saw the door
being propped open, but you don't just stop there.
Don't assume that's the only problem.
You're you need to be thorough
and go through everything because it can bite you in the butt
and you could find out that there's another issue, too.
OK, yes.
It's obvious they need to keep the door shut,
but maybe there's something else going on, right?
So do your due diligence, go through the equipment in this situation.
I went through everything.
I went ahead and found that the condenser was dirty, clean the condenser.
Now, that could have caused some issues, but I don't think that was the issue.
I think the main issue was that that door was being propped open.
Now, since the filming of this video, this video was actually filmed
back in November of 20, 21. OK,
we've already replaced the entire door.
OK, we put a bolt on door. It's a one way door.
It's not a high traffic door or I called those dairy
doors, the ones that open on the inside and the outside.
I don't know why I call them dairy doors.
It's just a phrase we've always used.
But essentially I think the technical phrase is high traffic door.
But because they can go in and out of it.
But the new door that we installed is just a standard walking cooler door
that only opens from the outside.
It only opens one way, has self-closing hinges and all that stuff.
And it actually has insulation in the door.
They they, you know, let. A lot.
Less heat infiltrate into the box.
But anyways, don't just assume that it's a door issue.
Go through everything.
And once I went through everything, I started to notice, hey,
this equipment is doing everything it can, right?
And I didn't mean to sound rude or anything.
When I said I wasn't
going to go back out to the customer, even though I was frustrated.
The point that I was trying to make was
I did tell the customer, Look, you guys need to keep this door shut.
And if you don't,
this equipment is goingto it's going to get hot in this box again.
And I that is what I was saying.
I'm not going to come back out tomorrow
because you're saying the box is hot again when there's nothing wrong.
I'm not going to waste my time to drive back out there to say shut the door.
Right.
So that was the point I was trying to make because it was like pulling teeth
to try to get the customer
to approve me to put curtain strips on that as a temporary basis.
They wouldn't let me.
So I gave them options.
They didn't take them.
I was not
willing to go back out there again to tell them, hey, there's nothing wrong.
There's nothing else I can do.
So that's why I kind of gave them an ultimatum.
It may be bad business, but that's just the way I went about it, right?
They have since, like I said, let me change the door.
But again, the point I can't stress enough is be thorough.
Don't just assume the first symptom you see is the problem, right?
If you have an iced
up coil, that's a symptom of a problem, OK?
You de-ice it and yeah, it starts working.
But what caused it to ice up?
OK, is the door being left open?
Is the temperature control or bad?
Is the defrost clock bad?
So we're there to find the root cause the problem.
We're not there to just solve a symptom, OK?
We need to be thorough technicians.
We need to understand sequence of operation and go through things
methodically so that way we can figure out and be confident in our diagnosis.
Right? At least that's the way I approach things.
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