Toshiba RAV-SM800XT-E, RAV-SM560XT-E service manual Heat insulation

9-8-3. Heat insulation

1.Provide heat insulation on the refrigerant piping on both the liquid side and gas side separately, and ensure that all joints in the insulation are completely sealed (without gap).

2.Since the temperature of the piping on the gas side increases during heating operations, the heat

insulating material used must be able to withstand temperatures of more than 120°C.

3.Use the pipe insulation supplied in the accessory pack to insulate the piping connecting section on the indoor unit side.

9-8-4. 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 in torque as follows:

Gas side (12.7 mm (diam.))	50 to 62 N•m (5.0 to 6.2 kgf•m)
Liquid side (9.52 mm (diam.))	33 to 42 N•m (3.3 to 4.2 kgf•m)
Liquid side (6.35 mm (diam.))	14 to 18 N•m (1.4 to 1.8 kgf•m)
Service port	14 to 18 N•m (1.4 to 1.8 kgf•m)

Hexagonal wrench is required.

Fig. 9-8-1

Cover

Do not put the spanner or torque wrench, etc. on the cover.

The valve may be broken.

Fig. 9-8-3

•On the contrary, use a single spanner to loosen or tighten the flare nut of the valve at liquid side.

Valve unit

Handle

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

Charge port

Flare nut

Fig. 9-8-4

Valve unit

<For RAV-SM800AT-E model>

•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.

SM800 type valve at gas side

Cover

Cap

Piping valve

Loosened

Tightened

Flare nut

Fig. 9-8-2

Push in handle.

Charge port

Flare nut

Fig. 9-8-5

Handle

Closed completely Opened fully

Fig. 9-8-6

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