Every summer, the motor temperature of the DVE vacuum pump will exceed the limit. In severe cases, it will overcurrent and cause damage to the motor. It is necessary to be forced to install a temporary cooling fan, but the effect is not great.

Long-term high temperature operation of the motor will cause insulation aging and shorten the service life of the array. The reasons for the high temperature of the DVE vacuum pump motor are analyzed as follows.

(1) The motor has a large power, a large working current, and a large amount of heat.
(2) The fan speed is low, the wind pressure, and the air volume are small.
(3) The number of fan blades is small, and the air volume generated is small.
(4) The motor is attached with dust and oil, which reduces the heat dissipation capacity.
(5) The bus voltage of the DVE vacuum pump motor is 380V. Due to the cable voltage drop and uneven load distribution, the actual voltage applied to the motor is only 365V. The low voltage causes a large operating current.