Chapter 8: Maintenance
8.1 Periodic Maintenance Schedule
The following table gives a summary of the preventive maintenance procedures and
guidelines on frequency.
Table 8-1. Inspection and Maintenance
Item
Period
Reference
Safety Labels
1 week
Check E-Stop, enable and key
switches, and barrier interlocks
3 months
Checking Safety Systems
on page 105
Check robot mounting bolts
3 months
Checking Robot Mounting
Bolts on page 105
Lubricate Joint 3 (Quill)
ball screw
6 months
Lubricate Joint 3 Ball Screw
on page 105
Replace Encoder battery
2 - 4 years
Replacing Encoder Battery
on page 106
Inspect timing belts on 3rd
and 4th joints
12 months
Inspecting Timing Belts on
page 110
WARNING:
ELECTROCUTION RISK
The procedures and replacement of parts mentioned in this section should be
performed only by skilled or instructed persons, as defined in the
Robot Safety
Guide
. The access covers on the robot are not interlocked – turn off and lock-
out/tagout power if covers have to be removed.
WARNING:
ELECTROCUTION RISK
During maintenance, user-supplied fail-safe lock-out measures must be used to
prevent unauthorized third parties from turning on power.
This is mandated by Clause 5.2.4 of ISO 10218-1.
8.2 Warning Labels
NOTE:
Labels giving instructions for lifting or installing are not considered
warning labels. They may be removed by the user, and do not need to be
checked.
05624-000 Rev. K
Cobra 350 User's Guide
103
