Clean Model Maintenance; Greasing The Ball Screw Spline Unit - Epson ES Series Manipulator Manual

Part 2: Maintenance

12. Clean Model Maintenance

NOTE

12.1 Greasing the Ball Screw Spline Unit

NOTE
NOTE
RC+ SPEL 95
300
The Clean models for the ES / EL series includes additional features that reduce dust
emitted by the manipulator to enable use in clean room environments (See NOTE). This
chapter describes the differences between Standard and Clean models for the ES / EL series.
Clean model requirements specify a maximum of 10 particles (0.13 µm or more in
3
diameter) in 28317 cm (1cft) sample-air around the center of the motion range.
For information on how to work with the ball screw spline unit, refer to chapter 9.
Replacing the Ball Screw Spline Unit.
Follow the standards specifications concerning the type of grease to use and the areas to be
greased. Note that the bellows must be removed before greasing the shaft.
Removing the bellows to enable greasing emits a large amount of dust. Therefore, take the
unit to an outer room such as the room in front of the clean room's entrance, or set up a dust
emission prevention device before removing the bellows in the clean room.
When greasing, do not allow any grease to get on the outside of the bellows. Grease may
drip. Cover peripheral units with a sheet if necessary.
(1) Disengage the motors by the MOTOR OFF while keeping the Drive Unit power ON.
(1) Disengage the motors by the MOTOR OFF while keeping the Controller power ON.
(2) Raise the shaft manually to its upper limit while pushing the brake release button.
(3) In order to bring the upper bellows upwards, unfasten the clamp band at the bottom of
the upper bellows. You need a cross point driver to unfasten the clamp band.
Clamp band
Shaft
The cylinder on top of
the arm top cover
12. Clean Model Maintenance
Brake release button
199