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Thread: Lp switch Settings
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03-06-2008, 11:26 PM #1
Lp switch Settings
How do iI set an LP switch with a differential for a coldroom.What sort of pressures do I require to maintain a temperature of bettween 0 and 5 degrees with the compressor cutting out and kicking in normally.
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03-06-2008, 11:29 PM #2
Re: Lp switch Settings
Are these exam questions coming round again?
With the LP switch - read the instructions that come with the switch.
What sort of refrigerant are you using?Brian - Newton Abbot, Devon, UK
Retired March 2015
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03-06-2008, 11:30 PM #3
Re: Lp switch Settings
You fit a thermostat for an accurate control of temperature as pressures vary with temperature and therfore an lp control switch will require constant adjustment and readjustment.
rgs philTransvestites are men who like to eat, drink, and be Mary.
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03-06-2008, 11:30 PM #4
Re: Lp switch Settings
Thanks ,Its R22
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03-06-2008, 11:50 PM #5
Re: Lp switch Settings
I read your question as: you need to control a cooler with the LPC and you need the pressure settings.
Let's assume this is a small beverage cooler with a forced air evap. I'll also assume you were giving celsius temperatures being it's R-22.
0 C = 32 F
5 C = 41 F
You could start with these settings and adjust as needed for proper temps and to prevent short cycling.
cut in: 64 psi
cut out: 34 psi
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