One, three screw pump installation preparation work content:
(1) check the screw pump motor, know no damage in the transportation, loading and unloading process.
(2) the inspection tools and lifting machinery, and check the machine base.

Two, three screw pump installation requirements
1. The three screw pump check the oil seal of the pump are in good condition before installation, and check the pump is damaged during the transit, usable hand rotation coupling card trouble phenomenon, if there is any should tear open pump for cleaning, repair and calibration.
2. Three screw pump when the pump suction and discharge of oil pipeline installation, the pipe diameter shall not be less than the size of the suction and discharge of oil pump, the oil pipeline shall not be too long, elbow shall not too much, otherwise will affect the pump issue) you browse pages or submitted data contain sensitive keywords information work status.
3. When two three screw pump installed in the same tube line, to facilitate pump start-up, in into the pump exhaust non-return valve must be installed on the tubing.
4. Under high temperature (above 60 ℃) for conveying the viscosity of oil (such as: heavy oil) of the standby pump, it must be hot standby pump, otherwise the pump at low temperature can cause the damage of motor overload or pump.

Three screw pump, screw pump installation standard installation should be governed by the provisions of the first chapter of this outside, still should meet the following requirements:
1, the pump outlet valve full close should not be in the absence of liquid or under the condition of start, before the start of the pump should be perfusion conveying liquid.
2, when conveying liquid temperature above 60 ℃, should be in accordance with the provisions of the equipment technical documents preheating;