Installation, use and maintenance
Due to long-distance transportation, a detailed inspection of each component of the product must be conducted before installation, and the coupling must be rotated to ensure even force and friction resistance.
2. The installation position should meet the requirements of easy operation and maintenance, and be dry, clean, and bright. The installation foundation should be 100mm above the ground and firm and sturdy.
3. The whole machine must be relatively flat, fixed, and grouted on the foundation. The connecting pipes must not leak air until the concrete is dry before installation; Otherwise, it will affect the vacuum pumping and liquid discharge time or result in insufficient flow rate and head.
4. Additional support points should be set up for the inlet and outlet pipelines, and they should not be directly supported on the flange to prevent deformation and damage to the pump body flange. The pipe diameter should be enlarged to avoid sudden changes in flow direction as much as possible, in order to reduce hydraulic losses. Leakage is not allowed in the pipeline. The conveyed medium should not contain hard particles or long soft fibers, sediment, etc., to prevent channel blockage, blade wear, and mechanical seal scratches.
5. Before starting up, connect the cooling water to ensure that the mechanical seal does not experience dry friction. The cooling water connection method is bottom in and top out, and the water pressure is less than 0.1Mpa. During liquid filling operation, dehydration and idling are strictly prohibited. The bracket of the coupled transmission pump is equipped with lubricating oil holes, which require regular replacement and filling of lubricating oil to improve the operation of the bearings and extend their service life.
6. Check the direction of motor operation. From the pump suction port, clockwise direction is the positive direction.
7. Pumps that operate continuously should have spare parts, which should be replaced and repaired regularly. Generally, they should be disassembled for maintenance or replacement after 2-3 months.
When the medium density P>1.2 is used, a separate motor should be equipped, otherwise it will affect the head or burn out the motor.
9. The disassembly sequence is as follows: remove the bracket, motor bottom bolt, remove the motor assembly and pump bracket assembly, remove the connecting bolt of the cooling water cover, remove the cooling water cover, loosen the half circle bolt of the cooling ring, remove the H12 nut (after the coupling), remove the washer, coupling, key, remove the connecting bolt of the pump bracket, remove the pump housing and front pump cover, use a wooden mallet to strike the rigid 2 fastening bolt protruding from the shaft end of the bracket to separate the pump cover, impeller, and mechanical seal assembly from the bracket, and remove the mechanical seal.

10. Maintenance: Remove the dirt from the pump casing, front and rear pump covers, impellers, and mechanical seal components, and flush them clean. If there is no corrosion damage or mechanical damage, they can continue to be used; Check the mechanical seal end face for damage. For those with less wear or scratches on the dynamic ring end face, use fine metallographic sand to grind it flat on a flat plate. Before installing the mechanical seal, apply pure white oil or engine oil to the two end faces. After installation, tighten the semi-circular bolts of the dynamic ring evenly to ensure that the dynamic and static ring end faces are flush.