Safety And Control Devices; Functioning; Commissioning - Schneider Airsystems Air Master Serie Manual De Instrucciones

GB

SAFETY AND CONTROL DEVICES

1) Pressure transducer: adjusts the START and
STOP pressure
2) Safety valve: opens the air discharge at the
safety value.
3) Maximum temperature probe: stops the motor
when +110°C is exceeded
FUNCTIONING PRINCIPLES
• On commissioning, the motor starts fed in the
"star" connection. In this phase the electrovalve (1) is
open, the suction adjuster (2) is closed.
• The compressor remains in these conditions for
about 5÷7 seconds.
• After this period of time, the motor is "triangle-
fed": the electrovalve (1) receives current and closes
allowing the suction adjuster to open (2), which sucks in
atmospheric air through the filter (3).
• In this phase the compressor functions in full
working order and starts to compress the air inside the
tank (7).
• The compressed air cannot exit from the
minimum pressure valve (5) which is adjusted at 3÷4
bar.
• The compressed air compresses the oil inside
the tank (7) and makes it flow through the pipes (8).
• The oil reaches the radiator (9) and passing through the filter (11) and the piping (12) reaches the compressor (4) where it
mixes with the sucked air creating an air/oil mixture, which guarantees tightness and lubrication of the compressor's moving parts.
• The air/oil mixture returns into the tank (7), where the air undergoes a centrifugal pre-separation and successively a
definitive separation of the oil by means of the oil-separator filter (6).
• Therefore only air exits the tank, which through the pipes (13) reaches the radiator (9) and through the interception tap
(14) goes to the network.
• The light residues of oil deposited on the base of the oil-separator filter are re-introduced into the compressor

COMMISSIONING

Before commissioning the machine, ensure that:
• the power supply voltage corresponds to that indicated on the CE label,
• the electric connections have been carried out using cables with adequate section and that they are fastened well,
• the master switch (on the wall) has suitable fusing,
• the oil level is above minimum (top-up with the same type of oil if necessary),
• the air exit tap is completely open.
THE CONNECTION TO THE TANK MUST BE CARRIED OUT USING A FLEXIBLE PIPE.
• Commissioning of the compressor must be carried out by a specialised technician.
If the machine does not start-up and the "Dir. of rotation error" message appears on the display
Interrupt the electric power supply using the wall-mounted master switch,
open the electric cabinet door and invert the position of the two phases in the terminal board,
close the door, restore the voltage and re-start the machine
Display status during start-up (remains for 5 seconds)
Software
version
In order to visualise the total functioning time at any moment, press the
12 12
12 12 12
CONTROL FUNCTIONS
Display status during functioning
Easy Tronic II
V.0.0.0 GG/MM/AA
6

FUNCTIONING

7
START-UP
.
Display status during normal functioning
Oil temp.
data
Compr. status
key. The visualisation will last for 20 seconds.
1
2
100°C 9.5Bar
Stato=stand-by
3
.
pressure