Toshiba RAV-SM1100UT-E Service Manual page 43

Packed valve handling precautions
• Open the valve stem all the way out ; do not try to
open it beyond the stopper.
• Securely tighten the valve stem cap at the torque as
follows:
Gas side (15.9 mm (diam.))
Gas side (12.7 mm (diam.))
Gas side (9.5 mm (diam.))
Liquid side (6.4 mm (diam.))
Service port
Hexagonal wrench is required.
• As shown in the figure, be sure to use a double
spanner to loosen or tighten the flare nut of the valve
at gas side. If using a single spanner, the nut cannot
be tightened with necessary tightening torque.
On the contrary, use a single spanner to loosen or
tighten the flare nut of the valve at liquid side.
Cap
Loosened
Valve at gas side
20 to 25 N•m (6.3 to 7.7 kgf•m)
33 to 42 N•m (5.0 to 6.2 kgf•m)
33 to 42 N•m (3.3 to 4.2 kgf•m)
14 to 18 N•m (1.4 to 1.8 kgf•m)
14 to 18 N•m (1.4 to 1.8 kgf•m)
Cover
Piping valve
Tightened
Flare nut
Cover
Never put the spanner or
torque wrench, etc. on
the cover.
The valve may be broken.
Compound
pressure gauge Pressure gauge
–101kPa
(–76cmHg)
Handle Lo
Charge hose
Packed valve
at liquid side
40
Manifold valve
Handle Hi
(Keep fully closed)
Charge hose
Vacuum pump
adapter for
counter-flow
prevention
Vacuum
pump
Service port
(Valve core (Setting pin))
Packed valve at gas side