Toshiba R410A service manual Evacuating, How to open the valve, Valve size, Charge port

5 EVACUATING

<SM560AT-E>

Compound pressure gauge	Pressure gauge
–101kPa
(–76cmHg)	Manifold valve
Handle Lo	Handle Hi
	(Keep fully closed)
Charge hose	Charge hose
(For R410A only)
	(For R410A only)
	Vacuum pump adapter
	for counter-flow prevention
	(For R410A only)
	Vacuum
	pump

Packed valve (Gas side)

Service port (Valve core (Setting pin))

Valve unit Flare nut

Stopper

Charge cap

Charge port Valve rod

How to open the valve

Valve unit

Handle

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

Charge port

Flare nut

Valve unit

Push in handle.

Charge port

Flare nut

Handle position

<SM800AT-E>

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

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.

*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	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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