Documentation Center
Safety Precautions
RAK9155 is designed with full consideration for safety. However, all electrical appliances can be dangerous if used
inappropriately; it can cause a fire or electric shock that leads to severe injury. For your protection, please
read these safety precautions thoroughly.
Instructions
Use designated cable. A non-designated cable use can cause an electric shock. Be sure to use the cable
designated in this manual.
Prohibitions
Do not damage cables. If you damage a cable, it can cause a fire or electric shock.
1. Do not work over or damage a cable.
2. Do not place heavy objects on a cable or pull the cable.
3. Do not place a heater near the cable, which may result in the cable overheating.
4. Do not tuck down a cable when installing in a rack.
Instructions
Connect the power cable and the communication cable properly.
If you connect a power cable improperly, contact resistance will increase and it may damage the parts or cause a
fire.
Insert the connector of the communication cable all the way in. If it is connected improperly, the system may be
deactivated.
Prohibitions
1. Do not install in a closed area. If the module/controller is installed in a closed area with no air-conditioning, heat
may build up inside the set and cause a fire.
2. Do not place the set in direct sunlight or near a heater. Doing so can cause deformation, a breakdown, or a fire.
Pay extra attention when you place the set near windows.
3. Do not install the set where excessive oil smoke, steam, moisture, or dust is contained in the air. If the set is
installed in such a place, it may cause a fire or electric shock.
Instructions
1. Wear insulating gloves and protection glasses during installation and connection
2. Wear insulating gloves and protection glasses during the installation and connection of the set to prevent
electric shock or other injuries.
Keep Dry
1. Do not allow water and/or foreign objects inside the battery.
2. Water or foreign objects inside the battery can cause a fire or electric shock.
3. If any water or foreign objects inside the battery, in case any malfunction happens, please turn off the POWER
ON/OFF switch in order to shut down, and remove the power connector from RAK9155.
Do not disassemble
Do not open the set unnecessarily. Opening and modifying the unit can cause a fire or electric shock.
