a. the installation to be very careful to avoid bias arising from the installation

(1) the gland coupling alignment should be carried out after the bolts should be evenly supported to prevent the gland face skewed, with a feeler check points, the error is not greater than 0.05 mm.

(2) Check the gland and the shaft or sleeve diameter with the gap (ie concentric), four weeks should be uniform, with a feeler points tolerance no more than 0.01 mm.

b. the amount of compression according to the provisions of the spring, allowed the phenomenon is too large or too small to require error 2.00 mm. Than the pressure may increase the end, the other face wear rate. Too small will cause less than the pressure seal and can not play a role.

c. However, after the installation ring axis to ensure flexibility in moving the ring after the spring pressure should be able to automatically bounces back.

2, the demolition of the mechanical seal Note

a. When the demolition of the mechanical seal carefully, non-use of hand-hammer and flat blade, so as not to damage the sealing elements. To do a pair of wire hook, stretching in the direction of self-financing gap in the drive seat, the seal out. If the scale demolition of no less than should be cleaned before demolition.

b. If the pump mechanical seal both ends, in the assembly, the demolition process to take care of each other, to prevent the other.

c. mechanical seal on the run-off, where a loose gland seal is moved to the situation, the static rings parts must be replaced, not re-tighten the continued use.

Normal operation and maintenance of mechanical seal problems:

1. Mechanical seal before the start of the preparatory work and notes

a. comprehensive inspection of mechanical seals and ancillary equipment and piping installation is complete, compliance with technical requirements.

b. before the start of mechanical seals for static pressure test, check whether the mechanical seal leakage. If the leak more, should find out the reason for trying to eliminate. If still ineffective, should be demolished and re-check the installation. General static test pressure for 2 to 3 kg / square centimeter.

c. rotation by turning the pump, check whether the light evenly. Such as turning difficult or does not move when the assembly should check whether the size error, the installation is reasonable.

2. Mechanical seal installation and decommissioning

a. shall remain sealed before the start of cavity filled with fluid. Solidification of the medium for transmission, the application will be sealed vapor chamber heat to medium melt. Start before turning to prevent a sudden start caused by soft ring fragmentation.

b. For use outside the seal oil system pump mechanical seal, seal oil system should be launched. After stopping the last stop the seal oil system.

c. heat pump can not immediately stop after the outage seal oil and seal chamber cooling water seal at the oil temperature should be reduced to below 80 degrees, it canstop the cooling water to avoid damage to the seal parts.

3. Mechanical seal operation

a. If the pump starts minor leakage should be observed for some time. 4 hours continuous operation, such as, leakage is still not reduced, they should check the pump stops.

b. the operation of the pump pressure should be stable, the pressure fluctuation is less than 1 kg / square centimeter.

c. pump in operation, should avoid taking the time to the phenomenon of dry friction in order to avoid sealing surface and seal damage.

d. Always check the seal condition. Operation, when the leakage exceeds the standard, heavy oil is not more than 5 drops / min, light oil is not more than 10 / min, still no signs of improvement, such as 2-3 days, you should check the pump stops bolt seals.