Powerplus POWXQ8125 COMPRESOR 2200W 50L LUBRICATED EN - Manual (Page 5)

POWXQ8125 EN
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3.3 Things you should know
 To avoid overheating of the electric motor, this compressor is designed for intermittent
operation as indicated on the dataplate (for example, S3-50 means 5 minutes ON and 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 due to excess current
takeoff.
 To facilitate machine restart, it is important not only to carry out the operations indicated
but also to set the button of the pressure switch, returning this to the OFF position and
then ON again (figures 1a-1b).
 On single-phase versions, press the reset button on the terminal box of the motor (fig. 2).
 On 3-phase versions, operate manually on the button of the pressure switch, returning this
to the ON position, or press the button of the thermal cutout inside the box of the electric
panel (figures 3a-3b-3c).
 The single-phase versions are fitted with a pressure switch equipped with a delayed
closing air vent valve (or with a valve located on the check valve) that facilitates motor
start-up; therefore a few-second jet of air from this, with the reservoir empty, is to be
considered normal.
 To guarantee machine safety, all the compressors are fitted with a safety valve that is
activated in the case of failure of the pressure switch (fig. 4).
 When connecting an air-powered tool to a hose of compressed air supplied by the
compressor, interruption of the flow of air from the hose is compulsory.
 Use of the compressed air for the various purposes envisaged (inflation, air-powered
tools, painting, washing with water-based detergents only, etc.) requires knowledge of and
compliance with the rules established for each individual use.
4 START-UP AND USE
 Fit the wheels and foot (or the caster wheel for models that are fitted with this) according
to the instructions provided in the packaging. For versions with fixed feet, assemble the
front bracket kit or the vibration-dampers if furnished. Check that the rating data match the
effective characteristics of the system (voltage and power).
 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 power plug in a suitable socket checking that the button of the pressure switch
located on the compressor is in the “O” (OFF) position (figures 5a-5b-5c-5d).
 For the 3-phase versions, connect the plug to a panel protected by suitable fuses.

For the versions fitted with electric panel (“Tandem” control units or delta/star starters)
have installation and connections (to the motor, to the pressure switch and to the
electrovalve if any) carried out by qualified personnel.
 Check the oil level using the sight glass and if necessary unscrew the vent plug and top
up. (figures 6a-6b).
 At this point, the compressor is ready for use.
 Operating on the switch of the pressure switch (or the selector for versions with electric
panel, (figures 5a-5b-5c-5d), the compressor starts, pumping air in the reservoir through
the delivery hose.
 On reaching maximum operating pressure (factory-set during testing), the compressor
stops, venting the excess air present in the head and in the delivery hose through a valve
located under the pressure switch (in delta/ star versions, through an electrovalve that is
activated when the motor stops).
 The absence of pressure in the head facilitates subsequent restart. When air is used, the
compressor restarts automatically when the lower calibration value is reached (approx. 2
bar between upper and lower). The pressure inside the reservoir can be checked on the
gauge provided (fig. 4).