A Step-by-Step Guide for Charging Refrigeration Systems with HC-12a or HC-22a

Refrigerants are required by law to be recovered. If you mix anything with refrigerants you cannot recycle that product. There is also a chance that you will contaminate the recycled freon that is being collected by a recycling machine. If by chance contamination occurs in a system the proper way to recover the contaminated product would be to pull a vacuum on a DOT approved canister and drop the contaminated refrigerant into that container. Properly mark that canister as contaminated, and ship to a recycling center to be cleaned or destroyed. Remember, it is unlawful to release refrigerants into the atmosphere. Again we advise not to mix any refrigerants. It only leads to problems.

HC-l2a has been successfully used in many applications with outstanding results in efficiency and power savings.

1. Ice machines
2. Walk-In-Coolers
3. Chillers
4. Home refrigerators
5. Freezers
6. Mobile Refrigeration
7. Vending Machines
8. Food Processillg
9. Maritime Refrigerators
10. Industry
11. Water Coolers
12. Window Air Conditioners

1. If system is charged with HFC-134a or other refrigerant, recover into a suitable container. Check the system for leaks or defective components. Replace or repair as necessary. Determine that compressor has proper amount of lubricant per manufacturer's specifications.

HC-12a and HC-22a are completely compatible with the synthetic or organic oils in all existing systems. No flushing or oil changes are required.

2. Pull a system vacuum per manufacturer's specifications.

3. Connect gauges and hoses, then with compressor off and can or cylinder INVERTED, install HC-12a or HC-22a as a liquid on low pressure side of condenser. Adjust needle valve on tapping device to establish a.flow rate (overturning needle valve will stop flow). After a minimum charge is achieved, start compressor and set system to high.

4. Purge air from charging hose each time a can or cylinder of product is added.

NOTE: HC-12a is just 0.5 times the weight of HFC-134a. If charging your system by weight, keep the weight differences of all CFC -12 substitutes in mind! DO NOT OVERCHARGE! Exceeding 50 psig on low side may damage compressor. In some cases, clearing the site glass overcharges the unit. Any overcharge may cause loss of cooling efficiency.

5. After verifying that the pressures and temperatures are correct, remove the charging hose and place the HC-12a or HC-22a tag, which is supplied with each can or canister, on the air conditioning system's low pressure side access port.

6. Remember, HC-12a and HC-22a are flammable and should only be leak tested with an electronic leak detector or soap bubbles. If an odor such as is found in natural gas or propane is detected, a leak is indicated. Ventilate the area and after locating and repairing the leak, continue with the charging procedure.

7. Do not top off a system containing HFC-134a or any other CFC-12 substitute with HC-12a or HC-22a. Mixing the products reduces the performance of the system because HC-12a and HC-22a are more efficient refrigerants than HFC-134a or other CFC-12 substitutes. Also, mixing the products will contaminate them, and any ozone-depleting refrigerant must be recovered in recycling equipment.

8. Caution: Contents of containers are under pressure and may burst if heated. Keep away from direct sunlight and other sources of heat. Do not expose to temperatures above 1200 F. Do not puncture or incinerate container. Do not use near open flame. If product gets into eyes, flush with clear water. If swallowed, do not induce vomiting. Call a physician immediately.