I.VA.CO. Srl
12
Ed.12/2016
The start-up must be in compliance with the indicated purpose of use, with the listed
values and after having considered prohibitions, obligations and residual risks.
Make sure that the machine is not connected to the power supply before operating.
Make sure that neither the inlet silencer nor the outlet silencer are clogged or dirty.
The electrical motor has been designed to operate at a maximum height of 1000 m above sea level and at
an ambient temperature between -15 + 40 °C.
Always check that voltage and frequency on the plate are the same of the plant. Deviations from nominal
values allowed is ± 10%.
When operating under different working conditions the motor cannot be run at full load. In this event the
start-up may become difficult, particularly on single phase motors.
Connect the motor following the instructions on the terminal box.
Connect the ground cable to the relevant clamp and verify the grade of electrical leakage.
Fuses are not a protection to the motor but only to short-circuits.
In the event of a missing phase, frequent start-ups, excessive voltage variations, clogging of the rotor, the
overload/overheat protection is compulsory in order to prevent overload.
Adjust the protective motor according to the nominal value on the nameplate as maximum value.
At machine start-
up, it’s necessary:
-
To check the operating pressure by a pressure gauge or a vacuum gauge;
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To check the calibration of the safety valve;
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To measure the power absorption and compare it with the value on the nameplate;
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To set the thermal motor protection accordingly.
After one hour, check that the absorbed power doesn’t exceed the
accepted values.
SC
blowers and exhausters are designed for continuous operation. In case of many starts (6 times per hour
with regular stop) or inlet gas or ambient temperatures increasing, the max temperature of the motor
winding can be exceeded. Stabilization valves with neutral phase should be used only under I.VA.CO. SRL
advice.
13.1 ADJUSTMENT
SC
blowers and exhausters are self-adjusting on the differential pressure value generated by the working
conditions.
Piping losses are crucial to the differential pressure and should not be underestimated.
To decrease the flow rate do not throttle the suction or discharge but install a relief valve.
