screw pump

If pump is stored for future use, it should be kept as the following requirements:
1、Stator
Strip stator from pump, and separately store it ,which is in order to avoid deformation caused by rotor’s
gravity, for the deformation will lead to difficultly start machine ,decrease capacity and pressure.The
stripped stator should be stored in a cool dry place, and avoid shine and temperature under -10 ℃.
2、Rotor
After stator is stripped down, pad rotor with wood (Pic.３-１followed). Surface of rotor except that is
made of stainless steel should be painted with antirust oil.
Pic. 3-1
3、Components of Packing Shaft Seal
If pump uses packing shaft seal, personnel should take the following steps:
z strip packing gland;
z dismantle packing ;
z paint surface of shaft with antirust oil.
4、 Other Components
Surface of component except that is made of stainless steel should be painted with antirust oil.

Pipeline System

All pipelines need be completely cleaned before installing pump in order to avoid welding cinder, sandy
stone and other impurities from entering pump to destroy stator.
If pump is horizontally installed, it is suggested to set up a transitional pipeline between discharge casing
and connected pipeline (Pic.4-2 followed), which is helpful to dismantle stator. The minimus length of
transitional pipeline is shown in the table 4-2

the minimum length transitional pipeline (mm)

Operation and Maintenance Instruction