Mitsubishi Electric RH-FRH Series Instruction Manual page 98

3Installing the option devices
CAUTION
12) Turn off the controller's power supply, then install the No.2 arm cover U securely as before with fixing
screws (tightening torque: 1.39 to 1.89 Nm).
When installing the cover, check that no air hose or cable is pinched, and no air hose is bent.
Note) The installation surface of a clean and a oil-mist specification covers is using sealing material. In the
event that the sealing material has been removed or has been bent or broken to the extent that it
cannot be return to the original form, be sure to replace the sealing material. Please contact dealer
when the sealing material needs to be replaced.
The installing of the hand internal wiring and piping set is completed.
Hand internal wiring and piping set (RH-3FRH/6FRH/12FRH/20FRH series)
3-85
Do not power on the controller when the internal cables are connected to the con -
nectors on the robot.
If the end of the cables on the tool side is not processed, troubles such as fuse blown
by ground fault or short circuit may occur. Check that the end of the cables has been
processed before powering on the controller.