Carrier FB4 - Page 31

30
R--410A QUICK REFERENCE GUIDE
S R--410A refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment and replacement
components are designed to operate with R--410A refrigerant.
S R--410A refrigerant cylinders are rose colored.
S Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
S R--410A refrigerant systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold
hose when charging into suction line with compressor operating
S Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low--side retard.
S Use hoses with 700 psig service pressure rating.
S Leak detectors should be designed to detect HFC refrigerant.
S R--410A refrigerant, as with other HFCs, is only compatible with POE oils.
S Vacuum pumps will not remove moisture from oil.
S Do not use liquid--line filter driers with rated working pressures less than 600 psig.
S Do not leave R--410A refrigerant suction line filter driers in line longer than 72 hours.
S Do not install a suction--line filter drier in liquid line.
S POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
S POE oils may cause damage to certain plastics and roofing materials.
S Wrap all filter driers and service valves with wet cloth when brazing.
S A factory approved liquid--line filter drier is required on every unit.
S Never open system to atmosphere while it is under a vacuum.
S When system must be opened for service, recover refrigerant, evacuate then break vacuum with dry nitrogen and replace filter
driers. Evacuate to 500 microns prior to recharging.
S Do not vent R--410A refrigerant into the atmosphere.
S Observe all warnings, cautions,andbold text.
Copyright 2014 CAC / BDP D 7310 W. Mo rris St. D Indianapolis, IN 46231 Edition Date: 02/14 U.S. Export Classification: EAR99.
Manufacturer reser ves the ri ght to change, at any time, specifications and designs without notice and without obligations.
C a t a l o g N o : S M --- F A N C O I L --- 0 3
R e p l a c e s: S M --- F A N C O I L --- 0 2