Sanyo SAP-CRV123EH User Manual download pdf (Page 49)

(5) Recharging

●

Be sure to charge the specified amount of

refrigerant in liquid state

using the service port

of the wide tube service valve. The proper

amount is listed on the unit's nameplate.

When the entire amount cannot be charged all at

once, charge gradually while operating the unit

in Cooling Operation.

● When charging with a refrigerant cylinder, use

an electronic scale for charging refrigerant. In

this case, if the volume of refrigerant in the cylin-

der becomes less than 20% of the fully-charged

amount, the composition of the refrigerant starts

to change. Thus,

do not use the refrigerant if

the amount in the charging cylinder is less

than 20%.

Also, charge the minimum necessary amount to

the charging cylinder before using it to charge

the air conditioning unit.

Example:

In case of charging refrigerant to a unit requiring

0.76Kg using a capacity of a 10Kg cylinder, the

minimum necessary amount for the cylinder is:

0.76 + 10 × 0.20 = 2.76Kg

For the remaining refrigerant, refer to the

instructions of the refrigerant manufacturer.

● If using a charging cylinder, transfer the speci-

fied amount of liquid refrigerant from the refriger-

ant cylinder to the charging cylinder.

Prepare an evacuated charging cylinder before-

hand.

Do not use the refrigerant if the amount in

the charging cylinder is less than 20%.

CAUTION

Never charge a large amount

of liquid refrigerant at once to

the unit. This may cause dam-

age to the compressor.

CAUTION

●

To prevent the composition

of R410A from changing,

never bleed the refrigerant

gas into the atmosphere

while transferring the refrig-

erant. (Fig. 3)

Valve

Single valve

Charge liquid refrigerant with

cylinder in up-side-down position.

Liquid

Fig. 1

Valve

Single valve (with siphon tube)

Charge with cylinder in normal position.

Liquid

Fig. 2

Charging

cylinder

Open

Refrigerant

cylinder

Liquid

NO!

Fig. 3

Configuration and characteristics of cylinders

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 76 77

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Sanyo SAP-CRV123EH User Manual Page 49

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