ABB IRB 6640 Product Manual page 143

Check for leakage - Design 2
The front ear of the balancing device is lubricated with grease.
Leaks at o-rings, sealings etc. are not acceptable and must be attended to immediately to avoid
damage to the bearing.
Check the o-rings and sealings in the front ear of the balancing device for leaks.
Check for contamination / lack of free space
3HAC026876-001 Revision: F
Action
1. Clean the area at the front ear from contamina-
tion.
2. Run the robot for some minutes, in order to
move the balancing device piston.
3.
DANGER!
Turn off all electric power, hydraulic and
pneumatic pressure supplies to the robot!
For Foundry Prime robots:
Do not turn off the air pressure to motors and
SMB.
4. Check the o-rings at the front ear for leakage.
5. Replace o-rings if leaks are detected.
Action
1.
DANGER!
Turn off all electric power, hydraulic and pneumatic pressure supplies to the robot!
For Foundry Prime robots:
Do not turn off the air pressure to motors and SMB.
2. Check that there are no obstacles inside the frame, that could prevent the balancing
device from moving freely. See the figure
137.
Keep the areas around the balancing device clean and free from objects, such as service
tools.
3 Maintenance
3.3.7. Inspection, balancing device
Note
The o-rings are included in the
Maintenance kit, bearings and seals
already assembled with sealing
spacers and sealing rings. Art. no. for
the kit is specified in
equipment on page
Replement of the complete bearing is
also described in section
Replacement of spherical roller
bearing, balancing device.
Inspection points, balancing device on page
Continued
Required
138.
141