Metal structures: primarily Rails, hoists and other, whether it is in good condition.
Drive system: the main assembling accuracy of gear, such as speed limits, and the contact length is good and qualified.
Electric equipment: the main circuit and control circuit of compliance standards.
Base location: compliance with product design requirements.
Concrete, bolt hole: compliance with the installation conditions.
Safety devices: is complete, the installation is correct.
Limit switch: limit switches are sensitive and reliable.