Lower charge requirements
Because the molecular structure of HC Refrigerants is considerably larger
than that of existing
synthetic alternatives, less of the refrigerant
is required to charge a system. This not only reduces system pressures,
but also helps prevent refrigerant leakage over time.
requires 34% of the
CFC R12 charge by weight
• HC-12a® requires 40%
HFC R134a charge by weight
• HC-22a® requires 40%
HCFC R22 charge by weight
• HC-502a® requires 40%
CFC R502 charge by weight
HC-12a® Charging Instructions
1. Existing refrigerant may need to be reclaimed by qualified personnel.
The weight of the recovered refrigerant should be recorded. Local
regulations may vary by region and the technician should be aware
of all applicable requirements.
2. Pull a system vacuum and leak test.
3. Using the weight of the recovered refrigerant, or the system
label information, the weight of HC-12a® required will be approximately
35% of the weight of the recovered CFC, or approximately 40% of
the weight of the recovered HFC refrigerant.
4. Connect gauges and hoses, then with the compressor off, install
HC-12a® on the low-pressure side of compressor. After a minimum
charge is achieved, start the compressor and set system to high.
5. Add additional HC-12a® as needed. Do not overcharge the system.
6. After verifying that pressures and temperatures are correct,
remove the charging hose and place the HC-12a® label (supplied)
on the air conditioning system. Ensure all labels are visible and
7. If additional technical assistance is needed, please call your
nearest HC Refrigerant distributor or Northcutt, Inc. directly.
8. The air conditioning system will now operate at cooler inside
temperatures and a much lower head pressure, improving energy efficiency.
IMPORTANT: The equivalent weight of HC-12a® to alternative refrigerants
is shown in "NET WT." HC-12a® is designed to be charged
as a liquid. DO NOT OVERCHARGE. Exceeding 60 psig (414kPa) on low
side may damage compressor. In some cases, clearing the site glass
overcharges the unit. Also, overcharging may cause loss of cooling
Easily replaces harmful refrigerants
HC Refrigerants are designed to replace many environmentally harmful
refrigerants currently in use.
|• HC-12a® is designed
as a drop-in replacement for ozone-depleting CFC R12 and global-warming
HFC R134a refrigerant.
is designed as a drop-in replacement for ozone-depleting HCFC
is designed as a drop-in replacement for ozone-depleting CFC