ADJUSTING OPERATING PRESSURE
You do not have to use the maximum operating pressure at all times. On the contrary, the pneumatic tool being used
often requires less pressure. On compressors supplied with a pressure reducer, operating pressure must be correctly
adjusted.
Adjust pressure to the required value by turning the knob clockwise to increase pressure and anti-clockwise to reduce
it. When you have obtained optimum pressure, lock the knob by pressing it downward (fig. 7). For pressure reducers
equipped without a pressure gauge, the set pressure can be seen on the graduated scale located on the reducer body.
On pressure reducers equipped with a pressure gauge, pressure can be seen on the gauge itself.
WARNING: Some pressure regulators do not have “push to lock”, therefore simply turn the knob to adjust the pressure.
STOPPING THE COMPRESSOR
Turn or press the switch/button into position “0” (according to the type of pressure switch fitted on the compressor).
DO NOT turn off the unit by switching off at the socket or pulling out the plug.
MAINTENANCE
Before attempting any maintenance jobs on the compressor, make sure of the following:
- Master power switch in position “0”.
- Pressure switch and the control unit switches all off, in position “0”.
- No pressure in the air tank.
You are recommended to replace the filter element at least once if the compressor operates in a clean environment,
but more frequently if in a dusty environment (fig. 8).
The condensation in the tank must be drained at least once a week, by opening the drain tap (fig. 9) under the
tank. Take care if there is compressed air inside the cylinder, and water could flow out with considerable force.
Recommended pressure: 1-2 bar max.
1. Verify that the compressor is turned “Off”.
2. Holding the handle, tilt the compressor toward the drain valve so it is positioned at the bottom of the tank.
3. Turn the drain valve to open.
4. Keep the compressor tilted until all moisture has been removed.
Condensation of compressors that are oil lubricated must not be drained into the sewer or dispersed in the
environment as it contains oil.
OIL CHANGES - TOPPING UP WITH OIL (C24 / C24-U110 / C50 / PS20 / PS20-U110 only)
The compressor is filled with synthetic oil “SAE 40”.
We recommend a full change of oil in the pumping element within the first 100 hours of duty.
Unscrew the oil drain plug on the housing cover, allow all the oil to flowout, and re-screw the plug (fig. 10). Pour oil into
the upper hole of the housing cover (fig. 11) until it reaches the level indicated on the stick (fig. 3).
Once a week: check oil level of the pumping element (fig. 3) and see if it needs topping up. For operation at ambient
temperature in the range -5°C to +40°C, use “SAE 40” synthetic oil. The advantage of this oil is that is does not lose its
characteristics either in winter or summer. Do not drain used oil into the sewer or dispose of it in the environment.
OBSERVE THIS TABLE FOR OIL CHANGES
TYPE OF OIL HOURS OF DUTY
Synthesis..............................................500
Synthetic oil: .......................................300
(MOBIL, SHELL, ESSO, BP or OTHERS)
Other types of oil: mineral multigrade
SAE 15 W40.........................................100
WHAT TO DO IF SMALL MALFUNCTIONS OCCUR
Loss of air in valve under pressure switch
This trouble depends on poor tightness of the check valve. Take the following action:
- Discharge all pressure from the tank
- Unscrew the hexagon-head of the valve
- Carefully clean both the rubber disk and its seat.
- Refit all parts accurately.
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