Check which position of the four-way integrated valve lever allows vacuum or pressure functioning.
Close the valve and increase vacuum rate (or operating pressure).
Check that the lubricating pump works properly. Oil must regularly drip into the oilers. Typically 35 drops/min
(at maximum speed).
Check loading and operating speed for vibrations or unusual noises.
This vacuum pump is designed to work at maximum speed, but for longer operating we
recommend the pump be run at working speed (see par. “Usage limitations”). Adequately
prepare the transmission.
•
Do not make the vacuum pump overheat: maximum air temperature on exhaust (or delivery) side:
150°C.
•
Do not operate the pump without lubrication: it may cause quick wear and possible breakdown of
vanes.
•
Do not start running the pump under load: this may damage the drive system or the hydraulic motor.
•
Check the rotation speed: it must never exceed the operating limits indicated on the identification plate
of the vacuum pump.
•
Do not accidentally operate the pump in the wrong direction: it may break the vanes.
•
Do not convey the exceeding delivery outlet towards the suction port, otherwise it will sack warm gas.
•
Control the air flow by adjusting the rotation speed: do not use the pressure relief valve to discharge
the exceeding flow.
•
Internal wash-up is necessary after prolonged inactivity, after working in dusty environments or in
case of accidental suction of liquids. Such operation must be carried out only on cooled pumps.
•
Disconnect the exhaust silencer, if possible.
•
Start running the pump at low speed.
•
Suck some water (about 1-2 litres) through the inlet port.
•
Then suck oil (about 1 litre) to complete the wash-up and lubricate internal components.
In case the exhaust line cannot be disconnected, drain the liquids accumulated in the separator of
the exhaust silencer.
ROTATION SPEED
.
Once the needed vacuum rate has been reached, we recommend reducing the vacuum pump
speed to its working speed (see paragraph “Usage limitations”): this allows keeping the
achieved vacuum/pressure rate constant. The pump speed can also be reduced to values lower than the
working speed during the tank discharging phase (with the 4-way valve in pressure mode) without
increasing the draining time. Thus, exhaust temperature is reduced, vane durability is increased and
both oil consumption and power absorption are reduced.
WARNING
WARNING
10. OPERATING
PRECAUTIONS
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