what evap. temperature should i get

[duraid]

hi guys if I have a vertical freezer with a fan evaporator like ones used in restaurants and the temperature I want to get is -20c what is the evaporator temperature should be reached to cool the space to -20 C or in other words where should i start from to check my system health (the superheat the actual temperature of the suction line)

[chillin out]

Hi Duraid,

Why don`t you just stop the evap fan run the system and see if your licked finger sticks to all the evap but not all the way to the compressor?

I know this is a bit rough but it works for me.

chillin

[duraid]

thanks chillin out but what if my fingers sticks on the first half of evap. and not on the second half does that means lack of charge (of course if we supose all components of system are okay)

[chillin out]

Most likely yes.
Best thing to do then leak test repair leak and vac and recharge

chillin

[Abe]

hi guys if I have a vertical freezer with a fan evaporator like ones used in restaurants and the temperature I want to get is -20c what is the evaporator temperature should be reached to cool the space to -20 C or in other words where should i start from to check my system health (the superheat the actual temperature of the suction line)

To achieve cabinet temperature of -20C you need to evaporate at -30 C minimum

Look on your gauges...........is the compressor sized correctly to achieve this??

If you have a full charge of refrigerant.........and the gauge shows -30C , the cabinet will achieve desired room temp

[botrous]

LMFAO. .

Now what does that mean ???????

[Temprite]

Laughing My F***ing Arse Off

[botrous]

10x Temprite , very nice translation lololol

regards

[jteixiera]

delta t is got to be 10

[TXiceman]

What your actual suction temperature/pressure will be is determined by where the condensing unit and unit cooler balance. Normally you will be in the range of 5 to 10 dC cooler than your box temperature.

Ken

[Temprite]

Laughing My F***ing Arse Off

This post is for Richard Towns benefit, who decided to launch a personal attack against me via a private message.

A few posts prior to this someone posted LMFAO, that particular person has now been ejected from the forum.

Botrous asked what it meant and I told him.

I would never make those remarks towards another members comments.

Get you facts right before you go shooting off at the mouth.

[Manoj Menon]

Delta T should be 5 to 6 deg's. For -20 DegC application the ideal SST is -26 Deg C. ( That is the return suction line temperature at suction header.).

Check the super heat. genearlly we should maintain 8-10 Deg. at Evapoartor suction. For Air conditioning 8 - 12 Deg is ideal.
Tx and regards
Manoj Menon.