IAI America IX-NNW3515 - Manual (Page 34)

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5. Precautions for Use
5.5 Air Purge
The dust-proof/splash-proof specification has a purge air inlet at the back of the base.
Intrusion of powder dust into the robot can be prevented by supplying air through this inlet.
Air pressure As a reference, the air pressure should be at least 0.3 MPa but not
exceeding 0.6 MPa.
Outer diameter x inner diameter I6 x I4
Purge medium Clean, dry air free from compressor oil or other contaminants,
conforming to an air filtration rating of 10
Pm or below.
(Dry air should have an atmospheric dew point of –20 qC or below.)
z How to adjust the flow rate
The user must provide a pressure-reducing valve. Use the pressure-reducing valve to reduce the air
pressure to a range of 0.3 to 0.6 MPa, and adjust the flow rate using the speed controller supplied with the
robot. Supplying too much air will inflate the bellows. Adjust the speed controller by following the
procedure below.
To increase the flow rate, turn the needle on the speed controller counterclockwise from the fully closed
state.
Supplying too much air will inflate the bellows, so adjust the needle until just before the bellows start to
inflate.
After the adjustment, be sure to tighten the lock nut to prevent the adjusted flow rate from changing.
z To prevent intrusion of powder dust, adjust the air pressure and flow rate using the speed
controller at the back of the base.
z If air is not completely dry, bedewing will occur and water will collect inside the robot, resulting in
current leaks or malfunction.
Caution
Lock nut
Needle