When the vacuum pump is used under the following conditions, ancillary equipment shall be retrofitted: 1. The air to be drawn off or the dust in the gas, filters must be installed on the air intake pipe. 2, was pumping gas contains a lot of steam, you must install a condenser in front of the intake pipe. 3, with the removal of corrosive gases, before entering the pump, and must be carried out. 4, the gas or air to be extracted temperature exceeds 35 ℃, before entering the pump must go through the cooling device, to ensure that its temperature does not exceed 35 ℃. 5, the gas is removed or the air contains a lot of liquid, you must install a separator in front of the pump intake pipe. 6, the pump starting current often exceeds the rated current of the motor several times, must be equipped with starter switch.
