Toshiba R410A Service Manual page 27

Compound pressure gauge
–101kPa
(–76cmHg)
Handle Lo
Charge hose
(For R410A only)
Service port
(Valve core (Setting pin))
Packed valve at gas side
How to open the valve
Charge port
How to close the valve
Charge port
Pressure gauge
Manifold valve
Handle Hi
(Keep fully closed)
Charge hose
(For R410A only)
Vacuum pump adapter
for counter-flow prevention
(For R410A only)
Vacuum
pump
Valve unit
Handle
Pull out the handle and
using cutting pliers, etc.
turn it counterclockwise
by 90˚. (Open fully)
Flare nut
Valve unit
Push in handle and
turn clockwise by 90˚.
(Close fully)
Flare nut
Handle position
Closed completely
*1. Use the vacuum pump, vacuum pump adapters,
and gauge manifold referring to the manuals
attached to each tool before using them. For the
vacuum pump, check oil is filled up to the specified
line of the oil gauge.
*2. While the air is purged, check again that the
connecting port of charge hose, which has a
projection to push the valve core, is firmly con-
nected to the charge port.
Valve handling precautions
• Open the valve stem or the handle until it strikes
the stopper. It is unnecessary to apply further
force.
• Securely tighten the cap with a torque wrench.
• Cap tightening torque
Ø6.4
Ø9.5
Valve size
Ø12.7
Ø15.9
Charge port
27
Handle
Opened fully
14 to 18N•m (1.4 to 1.8kgf•m)
33 to 42N•m (3.3 to 4.2kgf•m)
33 to 42N•m (3.3 to 4.2kgf•m)
20 to 25N•m (2.0 to 2.5kgf•m)
14 to 18N•m (1.4 to 1.8kgf•m)