Question about Randell (84111NPCB)
My manager changed pressure settings instead of temperature control. what is correct pressure settings?
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Posted on Jan 02, 2017
SOURCE: I have a Randell 5ft
This unit uses Thermostat/Solenoid Valve Combination's to control the temperature
1. Rail 2. Bottom Storage
The way it works is the thermostat senses the need for cooling and energizes the solenoid valve. This allows refrigerant flow which cools the area it is controlling. Once the thermostat is satisfied the contacts open and the solenoid is de-energized closing the valve. If the solenoid is bad, the valve remains closed, no refrigerant flow, warm unit.
Test the solenoid coil (two wires) to see if voltage is present either with a volt meter, or remove the coil off the valve and place a screwdriver (insulated) through the coil hole and you should feel the pull like an electro-magnet (what a coil is).
Posted on Dec 05, 2010
SOURCE: temperature control
go to this web site and check out the manual. It has some general info that can get you started on narrowing down just what is happening.
If it has been filled with freon 2x, there is an issue. Either it has a leak and it has not been found yet, or the amount of freon in the system is incorrect.
Usually, adding a timer is for defrosting purposes. Is there a frosting up issue?
It could be a thermostat issue but it is not set by the PSI, but by actual temperature. If it is a control that you have to set the PSI, an experienced refrigeration tech should know what to set it at.
Let me know if I can be of any further help.
Posted on Dec 20, 2010
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