Fujitsu AOU48RLXFZ1 Installation Manual page 16

• Hold the torque wrench at its grip, keeping it in a right angle with the pipe, in order to tighten the flare nut correctly.
• Outer panel may be distorted if fastened only with a wrench. Be sure to fix the elementary part with a holding
wrench (spanner) and fasten with a torque wrench (refer to below diagram). Do not apply force to the blank cap of
the valve or hang a wrench, etc., on the cap. If blank cap is broken, it may cause leakage of refrigerant.
Blank cap
Holding
wrench
51 31 41 Handling precautions for the valves
• Mounted part of Blank cap is sealed for protection.
• Fasten blank cap tightly after opening valves.
Operating the valves
• Use a hexagon wrench (size 4mm (5/32in.)).
• Opening (1) Insert the hexagon wrench into the valve shaft,
and turn it counterclockwise.
(2) Stop turning when the valve shaft can no longer
be turned. (Open position)
• Closing (1) Insert the hexagon wrench into the valve shaft,
and turn it clockwise.
(2) Stop turning when the valve shaft can no longer
be turned. (Closed position)
En-16
Flare nut
Torque wrench
90°
Torque wrench
CAUTION
Flare nut
[mm (in1)]
6.35 (1/4) dia.
9.52 (3/8) dia.
12.70 (1/2) dia.
15.88 (5/8) dia.
19.05 (3/4) dia.
Opening direction
Liquid pipe
Tightening torque
[N·m (lbf·ft)]
16 to 18 (11.8 to 13.3)
32 to 42 (23.6 to 31.0)
49 to 61 (36.1 to 45.0)
63 to 75 (46.5 to 55.3)
90 to 110 (66.4 to 81.1)
Opening direction
Hexagon wrench
Seal (blank cap
installation portion)
Gas pipe