Walk-in Freezer Superheat

[Snapperhead]

Ok its not running right

Ok so I went with a 7000 btu evap by Trenton TPLP207LE-S2B-R6 according to the sheet i saw online

( dealer called it a 7500 for some reason )

Compressor is

5170 BTUH @ -20 SST @ 90 AMB
7160 BTUH @ -10 SST @ 90 AMB

a day later it wont pull below 15 , just hovers there

I go check it out

Ambient outside 80

High 265

Low 42

Line Temp 15 ( at pump )

So I have 5 deg SH

Had some bubbles so I topped it off , no change

Evap clean , no snow

Crank the TXV ( in ) a bunch of turns , didnt see much change

Turn all way in , back out 1 turn ( i dont like to leave them snugged in )

Low 38 psi , Line Temp 11

STILL 5 DEG SH



Didnt check SC , but the filter felt like your typical warm drier

Lineset length 12 ft

[Snapperhead]

aint the neatest , but its functional

AND its a 6 x 8 x 7 box

I was guessing on the original post

[icemeister]

My initial thought says the TXV isn't doing what it's supposed to do...ie, control superheat.

Did somebody assemble this valve for you and forget to put a cartridge in it? I've heard of that before.

[Snapperhead]

It come pre-assembled , i tore out the old evap , and just hung the new

I strapped the bulb directly outside the cabinet

[icemeister]

It come pre-assembled , i tore out the old evap , and just hung the new

I strapped the bulb directly outside the cabinet

Never trust, therefore verify. Replace the valve.

[icemeister]

I once forgot to tighten down the cartridge in a Sporlan Q valve and got the same kind of floodback.

[icemeister]

BTW...I've asked for this to be moved to a new thread.

[beenthere]

Made this its own thread.

[Poodle Head Mikey]

The TXV came with assembled to the evaporator coil -

Is there sub cooled liquid refrigerant at the TXV inlet?

Is the TXV bulb's full length snug and secure to the suction line?

If the TXV correct for the system's refrigerant?

If three yes answers the TXV is defective or the inlet screen is plugged.

PHM
--------

Ok its not running right

Ok so I went with a 7000 btu evap by Trenton TPLP207LE-S2B-R6 according to the sheet i saw online

( dealer called it a 7500 for some reason )

Compressor is

5170 BTUH @ -20 SST @ 90 AMB
7160 BTUH @ -10 SST @ 90 AMB

a day later it wont pull below 15 , just hovers there

I go check it out

Ambient outside 80

High 265

Low 42

Line Temp 15 ( at pump )

So I have 5 deg SH

Had some bubbles so I topped it off , no change

Evap clean , no snow

Crank the TXV ( in ) a bunch of turns , didnt see much change

Turn all way in , back out 1 turn ( i dont like to leave them snugged in )

Low 38 psi , Line Temp 11

STILL 5 DEG SH



Didnt check SC , but the filter felt like your typical warm drier

Lineset length 12 ft

[pecmsg]

Good Job!

[VTP99]

Is there a question in here somewhere ?
As for the head line ..... I like 4-6 @ the evaporator.

[VTP99]

Wait a minute, if he's flooding back the coil can't be starving.

[Poodle Head Mikey]

Oh you're right - doing too many things at once here. Delete my inlet screen reference. <g>

Can you think of any thing else I have overlooked?

Wait a minute, if he's flooding back the coil can't be starving.

[VTP99]

What's the defrost setup ?
Personally I'd eliminate them till frost shows up.
Also what were the TEV spec's ?

[powell]

What is the compressor number?

[Snapperhead]

Walkin freezer super heat is pretty effective when set right

[Snapperhead]

CF06K6E-PFV-25S

[Snapperhead]

What's the defrost setup ?
Personally I'd eliminate them till frost shows up.
Also what were the TEV spec's ?

4 times a day 30 min

TEV specs ? I asked for a 404a coil

I glanced at the power head , its a zp with 404 label

Didnt take amp readings

He just called said its holding 11 deg

I told him shutter down until i can get back tomoro

I will yank that TXV apart

[VTP99]

Did you by chance get a amp reading ?

[lytning]

Is there a question in here somewhere ?
As for the head line ..... I like 4-6 @ the evaporator.

I use 5. look for 30 or less at compressor