[crazzycajun]

I recently got back into the field from on-site maintenance I have never seen a multi volt compressor not even in my wholesale days. Second why would you trap a liquid line?

 

[VTP99]

.

 

[pecmsg]

Multi voltage is rare but not uncommon.
Traps
Can’t fix stupid.

 

[BBeerme]

Regarding the multi taps, there is a size range where it is very common. Smaller will be single voltage 120 or 240. Above that size range will typically be straight 460.

 

[VTP99]

In this case the higher voltage can manage the current the lower voltage would utilize the advantages of part start. 😉

 

[VTP99]

You wouldn't want to screwup the wiring on this one 🙄

 

[JayMan7]

I’ve seen traps on discharge lines. From the pic I’m assuming that’s the liquid line though?

 

[crazzycajun]

I’ve seen traps on discharge lines. From the pic I’m assuming that’s the liquid line though?

Yes never seen them on liquid not sure of the thoughts of the person installing it.

 

[icemeister]

The trapped line is a discharge line so the trap makes sense.

The insulated line must be subcooled liquid, hence the need for insulation.

My guess is the discharge line goes to an air-cooled condenser, then to a receiver and then back to the condenser for subcooling.

 

[VTP99]

So the discharge gas could condense on the way up dropping liquid down to the trap ?
How did you know it was a discharge line was it the only thing that made sense ?

 

[icemeister]

So the discharge gas could condense on the way up dropping liquid down to the trap ?
How did you know it was a discharge line was it the only thing that made sense ?

The trap is for oil, not condensed liquid.

 

[VTP99]

Now that registered thanks icemeister 👍🏻

 

[BBeerme]

Sort of difficult to tell, but it appears the insulated line is larger than the uninsulated line. It also appears there is moisture on the right uninsulated line, dripping from the insulated line? Could be oil though.

The trapped line is a discharge line so the trap makes sense.

The insulated line must be subcooled liquid, hence the need for insulation.

My guess is the discharge line goes to an air-cooled condenser, then to a receiver and then back to the condenser for subcooling.

 

[VTP99]

So all hot gas risers should have traps Yes ?

 

[ehsx]

Copeland sells multi voltage and part winding start to reduce inventories. Refer to Copeland wiring guide.

Trap in liquid line is ignorance.

 

[VTP99]

Also aren't the hot gas lines larger than the liquid ones for remote air condensers ?

 

[VTP99]

Crazzy what's up on the roof ?

 

[crazzycajun]

Crazzy what's up on the roof ?

A couple of med temp evaps hanging in a large walk-in

 

[crazzycajun]

The trapped line is a discharge line so the trap makes sense.

The insulated line must be subcooled liquid, hence the need for insulation.

My guess is the discharge line goes to an air-cooled condenser, then to a receiver and then back to the condenser for subcooling.

Unfortunately no it’s a liquid line in a med temp wi