Reasons for high current in dry screw vacuum pumps despite the inability to increase the frequency
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Reasons for high current in dry screw vacuum pumps despite the inability to increase the frequency
The trial run before operation was successful, but the vacuum level was low after operation. When the inlet is closed, the vacuum level cannot be increased even at a low frequency.
Empty it out to check for any blockages, determine the motor power, see if there is material trapped inside the screw, and check whether it might get stuck
Is the selected model a bit too small? It’s also possible to check whether there are any impurities inside the pump chamber, or to see if the exhaust port is unobstructed
Which brand of dry pump are you using?
The air leakage rate must be high; since it works fine when operated alone, it’s likely that the suction speed was chosen during design to avoid this issue