(1) The manufacturer shall use upper and lower positioning blocks to fix the indicator plate of the spring support in the position corresponding to the installation load provided by the user, so that the spring support is temporarily in a rigid state.
(2) After the pipeline has been cleaned and subjected to a water pressure test, remove the upper and lower positioning blocks before putting the pipeline into use.
(3) When the pipeline starts running, first check whether all positioning blocks have been removed, and then check whether there is any jamming during the displacement of the indicator plate from the installation load to the working load.
(4) After the pipeline is put into normal operation, check whether the displacement of the spring support under the working load is consistent with the design. After the pipeline stops running, check whether the indicator plate has returned to the position of the installation load. Check the tightness of the spring support, etc.
