Pump vacuum furnace temperature is too high

Pump vacuum furnace temperature is too high

Will inevitably be vacuum furnace in the process of using all kinds of fault, pump vacuum furnace temperature is too high? Under the vacuum furnace manufacturers sent gold to share it with a solution.
(1) check the thermostat setting of the temperature control pump is in accordance with the regulations. If not, should be reset.
(2) pump cooling water flow rate of solid scale or other dirt jam for smaller. Lead to rising pump Yun. Because oil pump must have certain viscosity to ensure the sealing of pump. The viscosity is too small, the sealing performance variation. And pump oil viscosity with temperature rise and fall. The sealing of pump, oil saturation vapor pressure increases, vacuum degree reduced. Solution is to dredge waterways. Increase the flow of cooling water, the temperature of the oil pump shall not exceed 0 ℃ o l e., it is about 0 ℃.
(3) components assembly is undeserved, cause wear and tear, should be reassembled.