1420 80TH ST SW D BIRDWELL MACHINE 2025-03-11

Refrigerant Piping Work 1 . Flaring the pipe end 1) Cut the pipe end with a pipe cutter. 2) Remove burrs with the cut surface facing downward, Cul exactly at so that the filings do not enter the pipe. right angles. / Remove burrs. 3) Put the flare nut on the pipe. Flaring P p Set exactly at the position shown below. 4) Flare the pipe. \Flare tool for R410A Conventional flare tool Clutch-type Clutch-type(Rigid-type) Wing-nut type(Imperial-type) 5) Check that the flaring has been done correctly. Die A 0-0.020 inch 0.039-0.059 inch 0.059-0.079 inch (0-0.5mm) (1.0-1.5mm) (1.5-2.0mm) Check The pipe end must The flare's inner p p surface must be be evenly flared in flaw-free. a perfect circle. Make sure that the flare nut is fitted. A WARNING • Do not apply mineral oil to the flare. • Prevent mineral oil from getting into the system as this would reduce the service life of the units. • Never use piping which has been used for previous installations.Only use parts which are delivered with this unit. • Never install a dryer to this R410A unit in order to guarantee its service life. • The drying material may dissolve and damage the system. • Incomplete flaring may result in refrigerant gas leakage. 2. Refrigerant piping Q CAUTION • Use the flare nut fixed to the main unit.(This is to prevent the flare nut from cracking as a result of deterioration over time.) • To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare.(Use refrigeration oil for R410A.) • Use a torque wrench when tightening the flare nuts to prevent damage to the flare nuts and gas leakage. • Align the centers of both flares and tighten the flare nuts 3 or 4 turns by hand,then tighten them fully with a spanner and a torque wrench. Apply oil Tighten Do not apply refrigeration Apply refrigeration Torque wrench Piping size Flare nut tightening torque oil to the inner oil to the outer surface, surface of the Clare. O.D.3/8 inch 24-1/8-29-1/2ft•lbf Flare nut _ (9.5mm) (32.7-39.9N•m) Gas side O.D.1/2 inch 36-1/2-44-1/2ft•Ibf Spanner (12.7mm) (49.5-60.3N•m) O.D.5/8 inch 45-5/8-55-5/8ft•Ibf (15.9mm) (61.8-75.4N•m) Do not apply refrigeration oil to Piping union O.D.1/4 inch 10-1/2-12-3/4ft•Ibf the flare nut to avoid lightening Liquid side with excessive torque. Flare nut (6.4mm) (14.2-17.2 N•m) 2-1. Caution on piping handling 1;!;;', Be sure to Wall —place a cap. • Protect the open end of the pipe against dust and moisture. I' `at Rain 4� If no flare cap is • All pipe bends should be as gentle as possible. Use a pipe bender available,cover for bending. v� the flare mouth with tape to keep dirt and water out. 9 /b / ■English