（1） Installation and commissioning
1. Before installation, be sure to check whether all parts are in good
condition, whether the lubricating oil is enough, whether the bolts are
loose and whether they are consistent with relevant technical data.
2. During installation, the foundation layout plane must be kept 180 °
horizontal; The contact area between the hoist base and the foundation
layout plane shall reach more than 90%; The screw axis shall be
perpendicular to the horizontal plane of the beam on the gate platform;
It shall be consistent and vertical with the lifting lug hole of the ram
to avoid the tilt of the screw rod, resulting in local stress and
damage to the parts.
3. After installation, trial operation must be carried out. Once no-load
test is carried out, let the screw make two strokes, listen to whether
there is abnormal sound, and check whether the installation meets the
technical requirements. Second, carry out the load test. Under the rated
load, make two strokes to observe the operation of the screw and the
gate for abnormalities. After confirmation, it can be officially
operated. After the load runs for a period of time, the first
maintenance shall be carried out. The metal foam generated by the
friction of new parts in the machine, especially the screw, nut, turbine
and vortex rod, shall be gently cleaned, coated with lubricating oil,
tightly sealed and continue to be used.