We can customize different types, sizes and materials of pen boxes, and the logo can be customized as required,the minimum order quantity is 500pcs for wooden pen box and leather pen box,1000pcs for paper pen box.if you have inquiry,welcome to contact me,my email is sasha@colorfullybox.com,whatsapp & mob is +86 15914327224.
Pen Box,Wooden Pen Box,Pen Packaging Box,Packaging Box For Pen,leather pen box,paper pen box,pen gift box,pen storage box,pen case Guangzhou Colorfully Box Co.,Ltd , https://www.cbpaperbox.com
1. Check the tools and lifting gear and check the foundation of the machine.
2. Check the screw pump motor to make sure there is no damage during transportation and handling.
II. Three screw pump installation specifications 1 pump should not be in the absence of liquid or outlet valve closed the case of the whole start, before the pump should be perfusion fluid delivery;
2. In addition to the installation of screw pumps shall be implemented in accordance with the provisions of Chapter I of this chapter, should meet the following requirements;
3. Conveying liquid temperature is higher than 60 ℃, it should be preheated according to the provisions of equipment technical documents;
4. Trial run fashion should check whether the safety valve is sensitive and reliable.
Three .SM, SN-type three screw pump installation requirements 1. Three screw pump check before installation of the oil seal is good, and check the pump during transport is damaged, the hand can rotate the coupling there is the phenomenon of card strength, if any Dismantle the pump for cleaning, repair and calibration.
2. Three screw pump installation into the oil and oil discharge pipe, the diameter of not less than the pump into the oil and oil discharge diameter, into the oil pipelines not too long, elbow not too much, otherwise it will affect the working status of the pump .
3. When two or more three-screw pumps are installed on the same pipe, a check valve must be installed on the oil discharge pipe of the pump for the convenience of starting the pump.
4. For backup pumps that deliver viscous oils (such as heavy oil) at higher temperatures (above 60 ° C), they must be hot spare pumps, otherwise starting the pump at low temperatures can cause motor overload or pump damage. 
I. Screw Pump Installation Preparation Screw Pump Installation Preparation Contents: