High vacuum pumps, exhausters and blowers operating manual
20
WARNING
In order to reducing energy consumption and not damaging the pump, it is advisable not to start up
more than 6 times / hour and that they are equally distributed.
DANGER
The pump working temperature depends on the characteristic of the processed fluid. High temperature levels
can be due to room temperature or gas intake that is too high, pressure differential that is greater than that
allowed, low or high oil level, installation is in constricted spaces, exposure to direct sun rays, dust deposits
on the motor’s cooling fan or on the fan cover casing.
DANGER
Full rotation speed pump operation must be without vibration or unusual noise. If these are present, stop
the pump immediately, search for the cause and eliminate it.
WARNING
Use the pump only in the working conditions indicated in this manual. If the working parameters change
(for example intake pressure, intake temperature, ratio with the primary pump) the volumetric and primary
pump could overheat and get seriously damaged.
Starting acceleration must not exceed the torque T Max (Nm) obtainable from performance charts as follows:
P
- Power (kW) at max pressure - Max Speed
n
- Revolution per minute (rpm)
T max
(Nm) = P (kW) x 20000 n (rpm)
Start / delta starting is recommended.
If the blower is started against full counter-pressure, it will be impossible to operate the star-delta starting method due to
lack of torque should the start up be with star-delta, the blower should then be fitted with a centrifugal coupling or, even
better, a clutch coupling, to be engaged when the motor has reached its full power.
6.3
– STOP
The pump must be stopped by cutting off the power supply and isolated from the system by closing the valve (see 5).
WARNING
Per le pompe delle serie Booster HV/FP, spegnere prima la pompa volumetrica e successivamente la
pompa per vuoto preliminare.
6.4 - DECOMMISSIONING AND PROLONGED STOPPAGE
If the pump is placed out of order and/or stopped for a prolonged period of time, proceed as follows:
• Stop it following the procedure indicated in point 6.3 of this manual
• Insulate the electrical power supply
• Insulate it from the user system cutting off the intake and outlet connection
• Gradually release the pressure or vacuum that may be inside
• Disconnect the connections to the system
• Shut off the intake and outlet using the specific protections
