2
INSTALLATION
1 • Place the compressor on a horizontal floor, at a height that facilitates
start-up, checking, maintenance operations.
In versions with reservoir, do not fasten the machine to the
floor using shims so as not to prevent normal vibration of
the compressor.
Position the compressor at least 60 cm from the wall in order to permit
optimal recirculation of fresh air and to guarantee correct cooling. Always
maintain a safety distance of at least 6 meters between the compressor
and the work area.
2 • The 2 - 3 HP models are fitted with an internal 27-liter reservoir while
the 4 to 10 HP models may or may not be fitted with an external reservoir
(270 or 500 liters).
The 2 - 3 HP models are equipped with taps to be fitted in the two rear
outlets: one for the air taken directly from the reservoir, the other for the air
that leaves the pressure reducer (available only for these models). (figures
10-11)
3 • Check for correspondence between the compressor plate data with the
actual specifications of the electrical system. A variation of ± 10% with
respect of the rated value is allowed.
Single-phase 2 - 3 HP: Insert the plug of the power cable in a suitable
outlet checking that the switch on the control panel of the machine is in the
«O» (OFF) position. (fig. 11)
Three-phase from 2 to 10 HP: connect the cables to a cabinet protected
by suitable fuses.
At initial start-up, check correct direction of rotation of the motor and that
this matches the arrow on the motor.
WaRNING: Three-phase versions must be installed and
connected by qualified personnel.
For the 2 - 3 - 5,5 D/S - 7,5 - 10 HP models: check that
the pressure switch inside the electrical cabinet is in the
ON «I» position.
4 • Prior to start-up, check the oil level using the sight glass (figures 12
and 15) and, if necessary, top up unscrewing the filler plug (the ideal level
must be at the center of the sight glass).
(figures 13-14 for 2 - 3 HP; from 4 to 10 HP figures 16-17)
5 • Start the machine only after checking that all sound-damping panels
have been regularly fitted and secured. Complete assembly of the panels is
indispensable for correct ventilation, for user safety and protection.
At this point, the compressor is ready for use.
3
aIR RECEIVER (ON TaNk-MOUNTED UNITS)
• Corrosion must be prevented: depending on the conditions of use,
condensate may accumulate inside the tank and must be drained every
day. This may be done manually, by opening the drain valve, or by means
of the automatic drain, if fitted to the tank. Nevertheless, a weekly check of
correct functioning of the automatic valve is needed. This has to be done
by opening the manual drain valve and check for condensate (fig. 25).
• Periodical service inspection of the air receiver is needed, as internal
corrosion can reduce the steel wall thickness with the consequent risk
of bursting. Local rules need to be respected, if applicable. The use of
the air receiver is forbidden once the wall thickness reaches the minimum
value as indicated in the service manual of the air receiver (part of the
documentation delivered with the unit).
• Lifetime of the air receiver mainly depends on the working environment.
Avoid installing the compressor in a dirty and corrosive environment, as
this can reduce the vessel lifetime dramatically.
• Do not anchor the vessel or attached components directly to the ground
or fixed structures. Fit the pressure vessel with vibration dampers to avoid
possible fatigue failure caused by vibration of the vessel during use.
• Use the vessel within the pressure and temperature limits stated on the
nameplate and the testing report.
• N o alterations must be made to this vessel by welding, drilling or other
mechanical methods.
4
START-UP AND USE
2 - 3 HP: to start the machine, set the «I – O» (On-Off) selector knob to
the «I» position.
4 and 5,5 HP models, direct start-up: operate on the pressure switch,
controlled by the switch on the control panel.
5,5 D/S model: to start the machine, set the «I – O» (On-Off) selector
knob to the «I» position and push the start button
On all 7,5 -10 HP: turn the start button to «I».
- On reaching maximum operating pressure, the compressor stops, de-
pressurizing the head and the delivery pipe via a valve located under the
pressure switch or using the electrovalve. This reduces the load on the
electric motor during subsequent re-start.
The machine restarts automatically on reaching the lower calibration value of
the pressure switch: the compressor continues to operate in this automatic
cycle until it is switched off (switch/selector in the «O» position).
Warning: do not restart the compressor immediately
AFTER this has been switched off so as to permit complete
venting of the air from the head.
- The 2 - 3 HP versions are fitted with a pressure reducer located on the
control panel of the machine (fig. 19).
Turning the knob (in the clockwise direction to increase the pressure and in
a counter-clockwise direction to reduce this) the pressure of the air can be
regulated in order to optimize use of air-powered tools.
The value set can be read on gauge A (fig. 1)
- When you have finished working, stop the machine, pull out the plug or
switch off the power supply and possibly empty the reservoir.
5
MAINTENANCE
The service life of the machine is affected by the quality of
maintenance.
BEFORE CARRYING OUT ANY OPERATION, SWITCH OFF
THE MACHINE, DISCONNECT THIS FROM THE POWER
SUPPLY AND DRAIN THE RESERVOIR COMPLETELY.
To operate inside the machine, remove the sound-damping panels.
To remove certain panels, some models are equipped with a specific
wrench.
Warning:
Certain versions (4 - 5,5 HP) feature a front door: make
sure that this is completely raised so that it rests on the
machine (fig. 20)
-Check that all screws (in particular those of the head of the unit) are tightly
drawn up (fig. 21).
The check must be carried out prior to the first compressor starting.
TABLE 1 – TIGHTENING OF HEAD TENSION RODS
Screw M6
Screw M8
Screw M10
Screw M12
-Clean the suction filter according to the working environment and at
least every 100 hours. Replace it if necessary. If the filter is clogged, this
impairs performance; if the filter is inefficient, this causes greater wear on
the compressor (figures 22-23).
-Replace the oil after the first 100 hours of operation and then every 300
hours.
For purging operations see fig. 18; for filling operations see point 4) on
page 15.
Use aPI CC/SC SaE 40 mineral oil of the type for cars with diesel engines
(for cold climates, aPI CC/SC SaE 20 is recommended). Do not mix
19
Nm
Nm
Min. torque
Max. torque
9
11
22
27
45
55
76
93
G
B