HVAC Walk-in Freezer 1

walk in freezer

This is the first part. Please be patient.

Freezer HVAC WalkIn

This entry was posted by admin on September 5, 2010 at 2:38 pm, and is filed under Home Appliances. Follow any responses to this post through RSS 2.0.You can leave a response or trackback from your own site.

Comments (25)
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#1 written by 54433001 1 year ago

@54433001 i am trying to learn refrigeration don’t know what that means.i just bought a book i will look it up.thank you

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#2 written by DrZarkloff 1 year ago

@54433001 The evaporator was stacking refrigerant.

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#3 written by 54433001 1 year ago

how did you know that was the problem

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#4 written by NorthernRefrig 1 year ago

Piece of crap valve put in Q body and sell parts make more money

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#5 written by death2opposeme 1 year ago

sweeeeeeeet bout time!!! walkin! woo

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#6 written by DrZarkloff 1 year ago

@climber3580 I could have replaced the entire valve. It was easier to just replace the powerhead and the insides of the valve.

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#7 written by climber3580 1 year ago

i thought you would just replace the TXV???

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#8 written by DrZarkloff 1 year ago

@thereceman There wasn’t enough refrigerat flowing through the old TXV.

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#9 written by thereceman 1 year ago

just a question. what was the reason for changing the expansion valve? too much or not enough refrigerant going to the evaporator. was the insulation that you put on the suction line sealed where it was cut

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#10 written by good140 1 year ago

Thanks for taking the time to make this video. Enjoyed and learned.

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#11 written by bigjoelas 1 year ago

poland2010-

What do you think the thermostat in 00:09 controls? I’d suggest brushing up on how an Automatic Pumpdown System works. All six of my walk-ins employ the same control system, as well as others.

Furthermore, how can you tell what the proper line size should be without knowing what the coil’s BTU rating is or the line length, etc?

I think Zarkloff is one of the better techs out there, definitely NOT a “bad craftsman.” Take your negative comments elsewhere.

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#12 written by phantompenguins 1 year ago

Dear DR Z i like your videos , I also do some repair work on a/cs and heat pumps,but can you show me how to size in a unit in a house. like showing what to measure,and getting the right CFMs to each room please? Thanks Jason

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#13 written by poland2010 1 year ago

its true

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#14 written by cherisong 1 year ago

Your remark is offensive and vile. You have been reported and blocked from replying to me.

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#15 written by poland2010 1 year ago

your an idiot… why wouldn’t you just change the valve ..its better for your labor AND WHY IS THERE A SOLENOID VALVE INSTALLED IN THE COIL… if you installed this refrigeration system… your a very bad craftsmen just like 90% of all other mechanics…… barley making a living….
all mother fuckers using improper size pipes never insulating properly its all right because I MAKE MY WEALTH OF IDIOTS LIKE YOU!

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#16 written by cherisong 1 year ago

What about walk in freezer 2 ?

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#17 written by DrZarkloff 1 year ago

Unless you can weigh in the charge then you’ll need to put in a schrader valve on the low side.

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#18 written by atlanticforce 1 year ago

Hi Dr
always enjoying all your video here.
i have a question.how to charge R404a on liquid line? i have seen a compressor with label on it said charge on liquid line only.
there is no service valve on suction line.

thanks Dr.

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#19 written by DrZarkloff 1 year ago

You’re better off getting an evaporator rated for 12,000 btu.

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#20 written by fyescas777 1 year ago

I have a question. Lets say you have a condenser rated at 12,000 btu on an ac unit and you want to replace the evaporator. Do you get an evaporator rated at less than 12,000 btu since the condenser has to be bigger in order to release the extra heat from the compressor or do you just get one that is rated at 12,000 btu as well?

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#21 written by DrZarkloff 1 year ago

Thanks for the suggestion.

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#22 written by DrZarkloff 1 year ago

The TXV has a strainer and the TXV is the type of oriface.

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#23 written by optmatt 1 year ago

Hey nice vid,
Just wondering do these txv not have any orifaces or strainers?

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#24 written by napais 1 year ago

Thanks for the video

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#25 written by pclle 1 year ago

I understand why you had to replace the parts but I am an apprentice looking to know more. Just a suggestion in your videos (I know its a tought job recording all of this and let alone putting it on youtube) but at least for this vid could you present the initial service call, the running characteristics and what led you to believe that the TXV needed to be adjusted? How was the system running? What are the freezer specs? (tonnage, wattage ect.)

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