Mecafer 425704 Manuel Utilisateur page 13

1
PRECAUTIOnS
An ACOUSTIC PRESSURE value of 4 m. corresponds to the ACOUSTIC
POWER value stated on the yellow label located on the compressor,
minus 20 dB
THInGS TO DO
• The compressor must be used in a suitable environment (well
ventilated with an ambient temperature of between +5°C and +40°C)
and never in places affected by dust, acids, vapors, explosive or
flammable gases.
• Always maintain a safety distance of at least 4 meters between the
compressor and the work area.
• Any coloring of the belt guards of the compressor during painting operations
indicates that the distance is too short.
• Insert the plug of the electric cable in a socket of suitable shape, voltage
and frequency complying with current regulations.
• For three-phase versions have the plug fitted by a qualified electrician
according to local regulations. The first time you start the compressor,
check that the direction of rotation is correct and matches that indicated by
the arrow on the conveyor (Fig. 1, the air must be conveyed towards the
head of the compressor).
• Use extension cables with a maximum length of 5 meters and of suitable
cross-section.
• The use of extension cables of different length and also of adapters and
multiple sockets should be avoided.
• Always use the switch of the pressure switch to switch off the compressor
• Always use the handle to move the compressor.
• When operating, the compressor must be placed on a stable, horizontal
surface to guarantee correct lubrication.
nOT
THInGS TO DO
• Never direct the jet of air towards persons, animals or your body. (Always
wear safety goggles to protect your eyes against flying objects that may be
lifted by the jet of air).
• Never direct the jet of liquids sprayed by tools connected to the compressor
towards the compressor.
• Never use the appliance with bare feet or wet hands or feet.
• Never pull the power cable to disconnect the plug from the socket or to
move the compressor.
2
START-UP AnD USE
• Fit the wheels and foot (or the suckers according to model) following the
instructions provided in the packaging.
• 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.
• Insert the plug of the power cable in a suitable socket (fig. 6) checking that
the button of the pressure switch located on the compressor is in the OFF
«O» position.
• For lubricated models, check the oil level using the rod included in the oil
fuel plug (figures 7a-7b-7c) or the sight glass (fig. 7d), and if necessary
top up.
• At this point, the compressor is ready for use.
• Operating on the switch of the pressure switch (fig. 3), the compressor
starts, pumping air into the receiver through the delivery pipe.
• When the upper calibration value (set by the manufacturer) has been
reached, the compressor stops, venting the excess air present in the
head and in the delivery pipe through a valve located under the pressure
switch.
This facilitates subsequent restart due to the absence of pressure in the
head. When air is used, the compressor restarts automatically when the
lower calibration value is reached (2 bar between upper and lower).
• The pressure in the receiver can be checked on the gauge provided (fig. 8).
• The compressor continues to operate according to this automatic cycle
until the switch of the pressure switch is turned.
• Always wait at least 10 seconds from when the compressor has been
switched off before restarting this.
• All compressors are fitted with a pressure reducer. Operating on the knob
with the tap open (pulling it up and turning it in a clockwise direction to
increase the pressure and in a counterclockwise direction to reduce this
fig. 9a), air pressure can be regulated so as to optimize use of pneumatic
tools. After setting the value required, push the knob to fasten this (fig. 9b).
On some versions, the ring-nut underneath must be tightened to fasten the
knob (figures 9c-9d).
Preserve this handbook for future reference
13
• Never leave the appliance exposed to adverse weather conditions.
• Never transport the compressor with the receiver under pressure.
• Do not weld or machine the receiver. In the case of faults or rusting, replace
the entire receiver.
• Never allow inexpert persons to use the compressor. Keep children and
animals at a distance from the work area.
• Do not position flammable or nylon/fabric objects closed to and/or on the
compressor.
• Never clean the compressor with flammable liquids or solvents. Check that
you have unplugged the compressor and clean with a damp cloth only.
• The compressor must be used only for air compression. Do not use the
compressor for any other type of gas.
• The compressed air produced by the compressor cannot not be used
for pharmaceutical, food or medical purposes except after particular
treatments and cannot be used to fill the air bottles of scuba divers.
THInGS yOU SHOULD knOW
• To avoid overheating of the electric motor, this compressor is
designed for intermittent operation as indicated on the technical
dataplate (for example, S3-25 means 2.5 minutes On, 7.5 minutes
OFF). In the case of overheating, the thermal cutout of the motor
trips, automatically cutting off the power when the temperature is
too high. The motor restarts automatically when normal temperature
conditions are restored.
• To facilitate restart of the compressor, in addition to the operations
indicated, it is important to return the button of the pressure switch to the
OFF position and then to ON again (figures 2-3-4).
• On certain «V» type versions, the reset button on the terminal box of the
motor must be pressed (fig. 5).
• On three-phase versions, simply return the button of the pressure switch
to the ON position. (fig. 3).
• Single-phase versions are fitted with a pressure switch equipped with a
delayed closing air discharge valve which facilitates start-up of the motor.
Therefore venting of air from this valve for a few seconds with the receiver
empty is normal.
• All the compressors are fitted with a safety valve that is tripped in the case
of malfunctioning of the pressure switch in order to assure machine safety.
• When fitting a tool, the flow of air in output must be switched off.
• When using compressed air, you must know and comply with the safety
precautions to be adopted for each type of application (inflation, pneumatic
tools, painting, washing with water-based detergents only, etc.).
• The value set can be checked on the gauge.
• Please check that the air consumption and the maximum working
pressure of the pneumatic tool to be used are compatible with the
pressure set on the pressure regulator and with the amount of air
supplied by the compressor.
• Always pull out the plug and drain the receiver once you have completed
your work (figures 10-11).
3
MAInTEnAnCE
• BEFORE CARRyInG OUT Any OPERATIOn, ALWAyS PULL OUT THE
PLUG AnD DRAIn THE RECEIVER COMPLETELy (figures 10-11)
• Check that all screws (in particular those of the head of the unit) are tightly
drawn up (torque 10 Nm = 1.02 Kgm). The check must be carried out prior
to the first compressor starting.
• After loosening any safety screws (fig. 12a), clean the intake filter according
to the type of working environment and at least every 100 hours (figures
12b-12c). If necessary, replace the filter element (clogging of the filter
reduces compressor performance and an inefficient filter causes increased
wear).
• For lubricated models, replace the oil after the first 100 hours of operation
and every 300 hours subsequently (figures 13a-13b-13c). Remember to
check the oil level at regular intervals.
Use API CC/SC SAE 40. (For cold climates, API CC/SC SAE 20 is
recommended). Never mix different grade oils. If the oil changes color
(whitish = presence of water; dark = overheated), it is good practice to
replace the oil immediately.
• Periodically (or after working with the compressor for more than an hour),
drain the condensate that forms inside the receiver (fig. 11) due to the
humidity in the air. This protects the receiver from corrosion and does not
restrict its capacity.
• Spent oil (lubricated models) and condensate MUST BE DISPOSED
OF in accordance with environmental protection regulations and current
legislation.
G
B