Therma-Stor Products Group Rx Free-Standing Dehumidification

FOR HVAC INSTALLER ONLY

5.6A Replacing a Burned out Compressor

The refrigerant and oil mixture in a compressor is chemically very stable under normal operating conditions. However, when an electrical short occurs in the compressor motor, the resulting high temperature arc causes a portion of the refrigerant oil mixture to break down into carbonaceous sludge, a very corrosive acid and water. These contaminants must be carefully removed otherwise even small residues will attack replacement compressor motors and cause failures.

Test the failed compressor oil with a test kit. If it indicates a burn- out, follow EPA regulations for disposing of the old refrigerant and oil. Follow standard procedures for replacing a burned-out compressor. These would include replacement of the liquid line filter/drier and addition of an oversized suction line filter/drier if it was a running burn-out. Several changes of the liquid and suction filter/driers may be necessary to cleanse the system.

5.6B Replacing a Compressor-Nonburn Out

Dispose of the old refrigerant per EPA guidelines. Replace the compressor and liquid line filter/drier. Weigh in the refrigerant quantity listed on the nameplate.

5.7 Humidity Control

The humidity control is an adjustable switch that closes when the relative humidity of the air in which it is located rises to the dial set point. It opens when the RH drops 4 to 6% below the set point.

5.8 Defrost Thermostat

The defrost thermostat is attached to the refrigerant suction tube between the accumulator and compressor. It will automatically shut the compressor off if the low side refrigerant temperature drops due to excessive frost formation on the evaporator coil. The blower will continue to run, causing air to flow through the evaporator coil and melt the ice. When the ice has melted, the evaporator temperature will rise and the thermostat will restart the compressor.

5.9 Condensate Pump

Condensate is automatically pumped to a remote location when the water level in the pump’s reservoir rises to close the float switch.

The pump also contains a safety float switch. If the pump fails, this switch opens the compressor control circuit and stops water production before the reservoir overflows. The compressor will stop, but the blower will not.

5.10 Relay

The relay provides power to the compressor via the black wire. Current passes through relay contacts between terminals 4 and 6. The contacts are closed when power is applied to relay terminals

0 and 1 by the dehumidistat, pump safety, defrost control and low pressure control are all closed.

If there is no continuity between terminals 4 and 6 when power is applied to terminal 0 and 1 by the control circuit, the relay is defective and must be replaced. The relay is also defective if there is continuity between 4 and 6 when no power is applied to 0 and 1.

5.11 Low Pressure Control

If the low side refrigerant pressure drops to 15 PSIG, the low pressure control opens; this opens the blower circuit and the control circuit that controls the compressor. It is an automatically reset control; it will close if the pressure rises to 37 PSIG. It’s primary function is to prevent damage to the compressor if a leak develops in the refrigeration system.

6	Santa Fe Rx Installer’s & Owner’s Manual

Rx Free-Standing Dehumidification specifications

Therma-Stor Products Group has emerged as a leader in providing innovative solutions for moisture control, and one of their standout offerings is the Rx Free-Standing Dehumidification unit. This product is engineered to meet the needs of various environments, including residential and commercial spaces that require efficient humidity management.

A primary feature of the Rx Free-Standing Dehumidifier is its impressive moisture removal capacity. With an ability to extract up to 70 pints of moisture per day, it is well-suited for areas prone to high humidity levels, such as basements, laundry rooms, and bathrooms. This high capacity ensures that spaces remain dry, preventing the growth of mold and mildew, which can cause health issues and property damage.

Incorporating advanced technologies, the Rx model is equipped with a state-of-the-art digital humidistat. This feature allows users to set their desired humidity levels, ensuring the unit operates only when necessary. The digital display offers real-time humidity readings, making it easy to monitor environmental conditions and adjust settings accordingly. Additionally, the automatic restart function is a valuable benefit during power interruptions. The unit can resume operation under the previous settings, protecting your space from potential moisture buildup after outages.

The Rx Free-Standing Dehumidifier also emphasizes user-friendliness. It features a continuous drainage option, which eliminates the need for frequent manual emptying of the water tank. This continuous drainage can be connected to a standard hose, making it ideal for long-term, unattended use. The unit is designed for portability, with robust casters that allow for easy movement between rooms, accommodating the dynamic needs of homeowners and businesses alike.

Furthermore, the quiet operation of the Rx model ensures that it can perform effectively without disrupting daily activities. Its energy-efficient design means lower energy costs while still delivering optimal performance. The unit is also built with durable materials that ensure longevity, making it a reliable investment for long-term humidity control.

In summary, Therma-Stor's Rx Free-Standing Dehumidification unit combines high performance with user-friendly features, advanced technology, and energy efficiency. This makes it an excellent choice for anyone seeking to maintain a healthy and comfortable living or working environment.

Therma-Stor Products Group Rx Free-Standing Dehumidification 6A Replacing a Burned out Compressor

Models: Rx Free-Standing Dehumidification