Toshiba RAV-SM802UT-E User Manual

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Refer to the “4.  Tools” (Page 8)

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.

(INDOOR unit)

(Liquid side)

Refrigerant cylinder 

(With siphon pipe)

Check valve

(Gas side)

Open/Close valve

for charging

Electronic balance for refrigerant charging

Opened

(OUTDOOR unit)

Closed

Service port

Connect the charge hose to packed valve service 
port at the outdoor unit’s gas side.

Recover the refrigerant, and check no refrigerant 
remains in the equipment.

(For refrigerant charging, see the figure below.)

Connect the charge hose of the vacuum pump 
adapter.

Open fully both packed valves at liquid and gas 
sides.

Place the handle of the gauge manifold Low in the 
fully opened position, and turn on the vacuum pump’s 
power switch. Then, evacuating the refrigerant in the 
cycle. 

When the compound gauge’s pointer has indicated 
–0.1 Mpa (–76 cmHg), place the handle Low in the 
fully closed position, and turn off the vacuum pump’s 
power switch.

Keep the status as it is for 1 to 2 minutes, and ensure 
that the compound gauge’s pointer does not return.

Set the refrigerant cylinder to the electronic balance, 
connect the connecting hose to the cylinder and the 
connecting port of the electronic balance, and charge 
liquid refrigerant.

1) Never charge refrigerant exceeding the specified amount.

2) If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.

3) Do not carry out additional charging.

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.