A Step-by-Step Guide for Charging Refrigeration Systems with HC-12a
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
4. Home refrigerators
6. Mobile Refrigeration
7. Vending Machines
8. Food Processillg
9. Maritime Refrigerators
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
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.