Charging Additional Refrigerant; Finishing The Job - Sanyo SPW-CR365GXH56 Technical Data Manual

1. Air Purging
CAUTION

Charging additional refrigerant

G
Charging additional refrigerant (calculated from the
liquid tube length as shown in Section 2. 2-7
"Additional Refrigerant Charge") using the liquid
tube service valve. (Fig. 5-5)
G
Use a balance to measure the refrigerant accurately.
G If the additional refrigerant charge amount cannot
be charged at once, charge the remaining
refrigerant in liquid form by using the gas tube
service valve with the system in cooling operation
mode at the time of test run. (Fig. 5-6)

Finishing the job

(1) With a hex wrench, turn the liquid tube service
valve stem counter-clockwise to fully open the
valve.
(2) Turn the gas tube service valve stem
counter-clockwise to fully open the valve.
CAUTION
5
(3) Loosen the charge hose connected to the gas
tube service port (for ø7.94 mm tube) slightly to
release the pressure, then remove the hose.
(4) Replace the service port cap on the gas tube
service port and fasten the cap securely with an
monkey spanner or box wrench. This process is
very important to prevent gas from leaking from
the system.
(5) Replace the valve caps at both gas tube and liquid
tube service valves and fasten them securely.
This completes air purging with a vacuum pump. The
air conditioner is now ready for a test run.
Use a cylinder designed for
use with R410A respectively.
To avoid gas from leaking
when removing the charge
hose, make sure the stem
of the gas tube is turned all
the way out ("BACK SEAT"
position).
Manifold valve
Pressure
Lo
gauge
Gas
tube
Liquid
tube
Gas
tube
Liquid
tube
5 - 4
Test Run and Others
Hi
Valve
Liquid
R410A
Close
Close
Outdoor unit
Open
Close
Fig. 5-5
Open
Open
Outdoor unit
Close
Open
Fig. 5-6