Vortice Climaticum Energy 7 Manuel D'installation page 30

VACUUM IN THE CIRCUIT
The presence of air and humidity in the cooling circuit may have undesirable effects, including:
• Increase in pressure
• Increased in power absorption
• Reduction in the unit's cooling or heating efficiency.
• The damp present in the circuit may freeze and block the capillary
• The damp may corrode parts in the circuit
BLEEDING AIR
To avoid the effects mentioned above, before starting the unit it is necessary to create a vacuum in the circuit. To
do this, follow the procedure given below:
1.Check that the gas and fluid pipes between the internal and external units have been properly connected and
that the electrical connections necessary to perform the tests have been made.
2.Remove the plugs from the gas and fluid valve, in the external unit. Note that during this phase both valves are
kept closed.
N.B.The standard charge relates to a connection pipe length between the internal and external units of between
5 and 10 m. (see table on pag. 7)
The vacuum must be re-created every time it is decided to move the machine to another position.
Make sure that any coolant added is always in the liquid state.
Never release the gas R-410 A into the air; R-410 A, like other HFC, is a greenhouse gas that is included on the
list of substances dealt with by the Kyoto protocol, with a global warming potential (GWP) of 1975.
3.Connect the vacuum pump to the service connector and create a vacuum in the circuit, eliminating any air and
humidity that may be present. Leave the vacuum pump in operation for at least 20 minutes.
4.Check that the circuit is completely sealed using the pressure gauge (vacuum meter), located on the vacuum
pump control unit
5.Switch the vacuum pump to "pressure check" mode.
6.Open the liquid and gas taps.
7.Start the unit in Cooling mode (COOL) and check the working pressure.
8.Disconnect the vacuum pump, close the gas and liquid taps and the service connection, locking all the relevant
seal nuts.
LEAK TEST
Checking for leaks in the cooling circuit can be carried out using the
leak tester instrument or special sprays, applied to the connection
points of the pipes to the internal and external units.
Any bubbles that form indicate the presence of leaks (fig. 19).
30
INTERNAL UNIT
Indoor unit
D
CHECK POINTS
check point
Cover
COVER
B
Outdoor unit
EXTERNAL UNIT
CHECK POINTS check point
fig.19
C
A