Brooks Automation Appendices
Part Number: PF40-DI-00010 Rev. A Appendix D: Preventative Maintenance
Appendix D: Preventative Maintenance
For help with preventative maintenance, addressing error codes, or any other issue, contact
support_preciseflex@brooksautomation.com.
Every one to two years, the following preventative maintenance procedures should be performed.
For robots that are continuously moving 24 hours per day, 7 days a week at moderate to high
speeds, a one-year schedule is recommended. For robots with low duty cycles and low to moderate
speeds, these procedures should be performed at least once every two years.
Check List Procedure If Problem Detected
Check all belt tensions Re-tension if necessary
Check air harness tubing in
elbow if present, and theta
axis for any wear
Replace if necessary
Replace timing belt in
optional linear axis
Typically every 6,000 hours of continuous operation
Check all joints in “free
mode” for low bearing friction
and any sticking.
If a bearing is getting stiff, return to factory for bearing replacement.
Check second stage (long) Z
belt for any squeaking
If noisy, add thick grease to front and rear edge of belt if necessary. (Shell 222 XP
or similar). Z timing belt can get stiffer over time (2-3 years) and occasionally start
squeaking against pulley flanges.
Check if front cover is rattling If so, check .125in ID by .062in thick O rings on dowel pins in base plate under
front cover for any deterioration and replace if necessary.
Check Cam Followers on J2
timing belt for grease leaking
or discoloration.
Replace if necessary. Note that earlier units had a 9 mm wide timing belt and later
units (2014, 2015) have a 12 mm wide timing and the Cam Followers are
different. See Appendix C: Spare Parts List.
Replace slip ring For units with electric gripper shipped before April 2015, replace the slip ring.
For units shipped after April 2015, replace the slip ring every third inspection test.
Table 8-4: Preventative Maintenance, Checklist & Procedures
Component Expected Life Action
Revision A, Serial Numbers F0X...
Slip ring 1-3 years Replace component
Ethernet cable (flat black Startech) 2-4 years Replace component
J2 timing belt (9 mm) 2 years Replace component
Motors with pulleys (bonded) 2-10 years Replace assembly if bond broken
Harness (any FFC cables) 4-10 years Replace robot*
Revision B, Serial Numbers F0B...
Slip ring 3-5 years Replace component
Ethernet cable (flat black Startech) 2-4 years Replace component
Revision C, Serial Numbers F0C...
Table 8-5: PF400 PM Schedule by Revision Level & Date
Copyright © 2023, Brooks Automation
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