QKM QD1, User Manual, Page: 35 / 64

Chapter 3
Product Installation
Document Version V3.1.0 (2020-08-18) 25
3.4 Check after installation
Check whether QD1 is installed correctly before configuration for normal use. To
ensure safe and stable operation, please perform the following checks:
⚫ Check whether all fixing screws are tightened.
⚫ Check whether power wire is connected properly and firmly, and whether its
positive and negative poles are connected in reverse. Conduct
measurement to ensure there is no short circuit before turning on the
power.
⚫ Check whether signal wires are connected properly and firmly.
⚫ Check whether foreign objects fall on the circuit board.
⚫ Check whether all wires and cables are tied reasonably and neatly, and
whether there are interferences around them to ensure they are not
excessively twisted.
⚫ Check whether cable labels are correct. Ensure they are not dropped or
damaged, and are in the same direction for easy viewing.
⚫ Check whether power LED and signal LEDs at network port are lit.