35
COMMISSIONING AND MAINtENANCE
3
COMMISSIONING AND MAINtENANCE
3.1
Preparation for first commissioning
Prior to commissioning, it is necessary to check that:
—
all the safety conditions have been met
—
installation distances and gaps have been respected
—
the electrical connections have been properly completed
—
power supply values are correct.
—
the earthing has been carried out correctly
—
all the connections have been properly tightened
—
the shut-off valves are open
9
The device must always be powered electrically in order to
allow for the compressor's oil to be properly pre-heated.
If the device is installed in very cold areas, the device should
be under voltage for at least 12 hours before starting it up
for the first time.
ON
OFF
—
position the system's main switch in the "ON" position.
—
3.2
Putting into service
After having completed all the operations required to prepare
for first commissioning, do the following to activate the device:
—
follow the instructions given in the manual of the indoor
unit that you are installing
9
Keep the leak finder on and close to the unit so that it si-
gnals any refrigerant leak.
9
Use an electronic leak finder properly calibrated for the sy-
stem refrigerant.
0
It is forbidden to use leak finders with halogen lamps.
0
Checks during and after the first commissioning
After starting the device, check that:
—
the current consumed by the compressor is less than the
maximum permitted
—
the device is operating under the recommended operating
conditions
—
the unit is able to stop and start up again
9
Should any of the above-listed controls have problems: turn
the device off and call the Technical Service immediately.
9
Do not touch the device pipes to prevent potential burns.
9
Take anti-static precautions in case of weather conditions
where humidity is less than 40%.
9
Avoid using mobile phones.
9
Additional refrigerant charge
The units are supplied with a sufficient amount of refrigerant gas
for a pre-set length of the connection pipes.
An additional refrigerant charge is needed if such length is exce-
eded.
The pre-set values are detailed in the following table:
Model
1070
M
1100
M
1125
M
1125
t
1140
t
Maximum length with
standard charge
m
7
30
30
30
30
Additional charge
g/m
20
45
45
45
45
9
The device must be earthed before performing the additio-
nal charge.
To perform the additional charge:
A
High pressure
B
Low pressure
1
Pressure gauge unit
2
Electronic scale
3
3-way valve service connection
A
B
1
R32
3
2
—
connect the refrigerant cylinder to the pressure gauge unit
—
connect the charging tube to the service connection on the
3-way shut-off valve
—
remove the air from the charging tube
—
charge the refrigerant with an electronic scale
—
disconnect the charging tube from the service valve
—
refit the three-way valve closing plug
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