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Traulsen RLT232NUTHHS Commercial Freezer Questions & Answers
Evaporator ice up and unit has a temp at 31F not
Melt the iced up evaporator with a hairdryer for a temp. fix. The auto defrost system isn't working. I can't find diagrams of yours but here is basically how it works.
The evaporator coil behind the cover on the back wall inside the freezer will ice up under normal conditions. Every 8 to 10 hours for around 20 minutes the defrost timer (or in most newer models the electronic adaptive defrost control) will turn the defrost heater on to melt the built up ice. There is a defrost thermostat which prevents the heater from overheating the freezer by breaking the heater circuit when the temp reaches close to 32 degrees F. The entire cooling system shuts off during the defrost cycle and starts back when the timer advances through the cycle.
If this ice is not melted it will continue to build up until the air can't flow over the coil to circulate the cold air through the freezer and into the fridge. The temperature change in the fridge is usually noticed first followed by the freezer.
If the defrost thermostat is bad, it can prevent the heater from coming on OR it won't turn the heater off when it gets too warm. It is clamped to the evaporator coil at the top to sense the temp. If it appears to be misshapen it is bad.
With an ohm meter it should show continuity when cold and none when warm.
You can also bypass(disconnect the two wires plugged into it and twist them together) the thermostat to see if the heater comes on then. If it does then you know the thermostat is bad and needs replaced.
The defrost heater is located on the evaporator. It is in a tube which is at the bottom and can also go up the sides of the evaporator. On some types you can see a burnt spot if it's bad. With an ohm meter it should show continuity from end to end when disconnected from the wiring in the freezer. You can also test the wiring for voltage when it's in the defrost mode.
If you have a defrost timer you can test it. It can be located under the fridge behind the kick panel on the front. Some are in the fridge with the controls at the top. You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer because that means the timer is not running. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.
If you have an adaptive defrost control instead of a timer, replace it if the heater and thermostat test good. It is located in the fridge with the controls in some models and on the back in others.
1/9/2011 12:43:50 PM •
Traulsen...
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Answered
on Jan 09, 2011
Traulsen 6 half door moel 31300 freezer
To check if the expansion valve is faulty in your freezer, you can follow these steps:
- Safety Precautions: Ensure the power is disconnected and the freezer is fully defrosted before proceeding.
- Locate the Expansion Valve: The expansion valve is typically located near the evaporator coil in the freezer. It is a small valve with an inlet and outlet.
- Visual Inspection: Inspect the expansion valve for any visible signs of damage or leaks. Look for corrosion, loose connections, or frost accumulation around the valve.
- Temperature Measurement: Use a thermometer to measure the temperature at different points in the refrigeration system. Check the temperature at the inlet and outlet of the expansion valve. There should be a noticeable temperature drop across the valve.
- Pressure Measurement: If you have the necessary tools and experience, you can also measure the pressure at the inlet and outlet of the expansion valve using a pressure gauge. Compare the pressure readings to the manufacturer's specifications to determine if the valve is functioning properly.
- Consult a Professional: If you are unsure about performing these checks or don't have the necessary tools, it is recommended to contact a professional technician or an authorized service center. They will have the expertise and equipment to accurately diagnose and repair any issues with the expansion valve.
6/28/2023 5:23:12 AM •
Traulsen...
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Answered
on Jun 28, 2023
Solenoid diagram
that sounds like the hardstart relay that energizes the start windings in the compressor . if that or more likely the capacitor fails when it is first energized the compressor will pull excessive amps and cause the overload protector to open until it cools for a minute or two.
5/22/2014 5:40:12 AM •
Traulsen...
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Answered
on May 22, 2014
Bad Temperature Controller
you can go to either aJohnstone Supply, United refrigeration, or baker supply, Insco Distributing, refrigeratin hardware supply company( they shio it from eithe dunver or someshere in california
Thank for using FixYa
12/24/2008 5:29:28 AM •
Traulsen...
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Answered
on Dec 24, 2008
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