Freezer nameplate says 3 phase but service is single phase

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I figured I'd do a little leg work, which in this business we do it all the time for design.

I found this, page 25

ALLOWABLE VOLTAGES EXTREME ALLOWABLE VOLTAGE AT COMPRESSOR TERMINALS
Nominal Voltage Range Extreme Voltage Range
Single Phase – 60 HZ 230 207-253
Three Phase – 60 HZ 208-230 187-253 460 414-506 575 517-632
 
now that we have the serial number, Polar King gives a little info; it is a dual unit with 2 temperature capability;

SYSTEM 1:Unit Temperature: 35°
Condensing Unit: Copeland – FJAM-A150-TFC
Evaporator Coil: Larkin – LCA6-135
Voltage/Phase/Cycle/Amps: 208-230/110/3/60
SYSTEM 2:Unit Temperature: -10°
Condensing Unit: Copeland – DJAL-020Z-TFC
Evaporator Coil: Larkin – LCA6-120
Voltage/Phase/Cycle/Amps: 208-230/110/3/60

I'm with Wayne. They don't give amps so we really don't know much about how big it is, only that there are 2 36" doors.
 
Another C10 said:
Check the link I noted on page 25, then there's a whole slew of wiring diagrams after that, I'd tend to think ... it has multiple abilities. maybe ..
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I looked through that PDF. I saw no matching model number, nor any units convertible between 1ph and 3ph.

Added: I also found: "A wiring diagram is located on the back of the electrical box panel on the condensing unit."
 
wwhitney said:
Could 208-230/110 3 phase mean that it's OK to connect to either a 208Y/120V system, or a high leg 240V delta? I.e. all the 3 phase motors will run on 208V or 240V, and one of the line terminals is marked for the high leg, if there is one, with no 120V components powered from that leg?

Cheers, Wayne
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That’s what I’m thinking it is.
 
LarryFine said:
LarryFine said:
I still want to know what "110/3" is. If it was referring to 208/120 3ph, the numbers would be together.
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From the wiring diagram it looks like the neutral is needed for the light and fans. I think that nameplate is just confirming that neutral is needed. I've seen it on equipment previously.. especially foreign.
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Some units did show an independent 1ph breaker for lighting; that may be what the 110v means.

If so, you will definitely need to supply the unit with 3ph for the compressor.
 
Thank you all. It looks like the customer is not going to be able to have me wire it up easily on Tuesday when it comes. I think I have some bad news for them. Its a non profit food pantry organization. The tech actually was able to look it up and said it was purchased at an auction from a school here in the city a month or so ago. He went on to say I think he remembers being called by someone about this unit being 3 ph but their building being single ph. I can't remember if he said he or someone else answered the call. He says he remembers telling that person that it would not work.
 
Glad the brain trust was able to help you figure it out.
nuts.gif
 
Stevenfyeager said:
Thank you all. It looks like the customer is not going to be able to have me wire it up easily on Tuesday when it comes. I think I have some bad news for them. Its a non profit food pantry organization. The tech actually was able to look it up and said it was purchased at an auction from a school here in the city a month or so ago. He went on to say I think he remembers being called by someone about this unit being 3 ph but their building being single ph. I can't remember if he said he or someone else answered the call. He says he remembers telling that person that it would not work.
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The auction listing says "(4) LED light fixtures; (2) Heatkraft units: LCE6120BEB and LCA6135AEB (defrost: 208/230v, 1 ph)"

https://bid.beckortauctions.com/lot...47/lot/4528554?url=/auctions/catalog/id/29447
 
Walk in equipment especially a freezer I agree is not usually long lived after 12 years.

But your job is to wire it. If I used a phase converter I would probably oversize it a little for the compressor load
 
I would be junking the evaporators inside the freezer and cooler sections and both condensing units. Then get a refrigeration tech to give them a price to install new ones. The only thing that may be worth saving is the box. That thing doesn't come apart and will have to be transported in one piece. That's big bucks right there and they only paid $6500 for it so they have no business crying about money.

-Hal
 
hbiss said:
A rotary phase converter for that application will have to run all the time. I would hate to get that electric bill!

-Hal
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I think it would be relatively easy to have the T-stat start the inverter, and a few seconds of delay for the unit.

Maybe unnecessarily complicated, but doable.
 
LarryFine said:
I think it would be relatively easy to have the T-stat start the inverter, and a few seconds of delay for the unit.
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Two separate condensing units with whatever requires 208 constantly like the defrost clock, defrost elements and probably evaporator fans? I don't think so.

norcal said:
Might be better to get a new condensing unit, the evaps are prob. fine
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The evaps look to be in good condition from the front but only the refrigeration tech will be able to say whether they can be reused. The main thing is that new condensing units will likely not use the same refrigerant which may or may not be compatible with the existing evaporation units. You would also have to look at the physical condition of the coils which can get pretty rotted over time.

-Hal
 
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