Samsung AR**MSWX series User And Installation Manual page 51

3 Open the valve of the low pressure side of
manifold gauge anticlockwise.
4 Evacuate the air in the connected pipes using the
vacuum pump for about 15 minutes.
Make sure that pressure gauge shows -0.1 MPa
(-76 cmHg, 5 torr) after about 10 minutes. This
procedure is very important to avoid a gas leak.
Close the valve of the low pressure side of
manifold gauge clockwise.
Turn off the vacuum pump.
Check for 2 minutes if there is any pressure
change.
Remove the hose of the low pressure side of
manifold gauge.
5 Set a valve cork of liquid and gas service port to
the open position.
Step 3.4 Adding refrigerant
If you use a pipe longer than the length specified in
the piping codes and standards, you must add 15g of
refrigerant R-410A for each extra metre. If you use a
pipe shorter than the length specified in the piping
codes and standards, the evacuating time is normal.
Refer to the Service Manual for further details.
CAUTION
The remaining air in the Refrigeration cycle, which
contains moisture, may cause malfunction of the
compressor.
Always contact the service centre or a professional
installation agency for product installation.
R-410A is a mixed type of refrigerant. It is necessary
for recharging under conditions of liquid. When
recharging refrigerant from the refrigerant cylinder
to the equipment, take the following instructions:
Before recharging, check whether the cylinder has
a siphon or not. There are two ways to recharge the
refrigerant:
50 English
IBIM_EN.indd 50
Siphon
Charge the refrigerant Charge the refrigerant turning
standing the cylinder upright.
<Cylinder with siphon> <Cylinder without siphon>
NOTE
If R-410A refrigerant is charged with gas, the
composition of the charged refrigerant changes
and the characteristics of the equipment vary.
During the measuring operation of refrigerant
quantity added, use electronic scales. If cylinder
doesn't have siphon, upset it.
the cylinder upside down.
3/17/2017 10:03:44 AM