Toshiba R410A service manual How to open the valve, How to close the valve

Compound pressure gauge

–101kPa (–76cmHg)

Handle Lo

Charge hose (For R410A only)

Service port

(Valve core (Setting pin))

Packed valve at gas side

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

Handle position

Handle

Closed completely Opened fully

*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.

How to open the valve

Valve unit

*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

	Handle
	Pull out the handle and
	using cutting pliers, etc.
	turn it counterclockwise
Charge port	by 90˚. (Open fully)
	Flare nut

How to close the valve

Valve unit

Push in handle and turn clockwise by 90˚. (Close fully)

Charge port

Flare nut

•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	14 to 18N•m (1.4 to 1.8kgf•m)
Valve size	Ø9.5	33 to 42N•m (3.3 to 4.2kgf•m)
	Ø12.7	33 to 42N•m (3.3 to 4.2kgf•m)
	Ø15.9	20 to 25N•m (2.0 to 2.5kgf•m)
Charge port		14 to 18N•m (1.4 to 1.8kgf•m)

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