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P[ RON(r9 QUICK REFERENCE GUIDE
FOR INSTALLERS AND TECHNICIANS
Puron refi'igerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement components are
designed to operate with Puron.
Puron refrigerant cylinders are rose colored.
Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
Puron systems should be charged with liquid refrigerant.
Use a commercial type metering device in the manifold hose.
Manifold sets should be 750 psig high-side and 200 psig low-side with 520 psig low-side retard.
Use hoses with 750 psig service pressure rating.
Leak detectors should be designed to detect HFC refrigerant.
Puron, as other HFC's, is only compatible with POE oils.
Vacuum pumps will not remove moisture fi'om oil.
Do not use liquid-line filter &iers with rated working pressures less than 600 psig.
Do not install a suction-line filter &ier in liquid line.
POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
POE oils may cause damage to certain plastics and roofing materials.
Wrap all filter &iers and service valves with wet cloth when brazing.
A liquid-line filter &ier is required on every unit.
Do not use an R-22 TXV.
If indoor unit is equipped with an R-22 TXV, it must be changed to a Puron TXV.
Never open system to atmosphere while it is under a vacuum.
When system must be opened for selwice, break vacuum with &T nitrogen and replace filter &iers.
Do not vent Puron into the atmosphere.
Do not use capillary robe indoor coils.
Observe all warnings, cautions and bold text.
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