Mitsubishi MELFA RH-3FH-D Series Special Specifications Manual page 32

２ Robot arm
3) Remove the CONBOX cover on the robot arm rear and install the attached ventilation duct (refer to
8). As the Z axis moves up and down the volume of the bellows varies, and air is sucked in and released out
of the robot's ventilation duct opening. Be sure to locate the ventilation duct's opening in a position that
will not affect the robot's cleanliness.
Furthermore, whilst it is only a small amount, internal suction results in external air flowing into the robot
through the ventilation duct's opening, and therefore the following two points should be considered when
deciding where to locate the ventilation duct's opening.
・ The opening should be facing downwards
・ The opening should not be located in the vicinity of dust/dirt or liquids, etc.
(Recommended cleanliness of surrounding area: less than ISO class 5)
Robot base
Fig.2-8 ： Installation of Exhaust Duct
4) When using the optional electromagnetic valve set, we recommend using the primary piping's spare piping
(φ6 air hose) to release the exhaust fumes.
Please take care as leaking exhaust fumes inside the robot may have an impact on the robot's cleanliness.
2-21
Internal section
Machine cable
CONBOX cover
Ventilation duct
(with attached
plate cover)
Opening
Fig. 2-