Periodic Maintenance
Battery Replacement
The only regular maintenance required for the L6-series of GuardLogix Controllers is periodic replacement of the battery that backups volatile memory. The From previous experience the battery should be replaced at least every 3 years. 18 months. The controller will display a warning if the battery must be replaced.
The L7 GuardLogix Controllers have replaced the Lithium battery with a capacitor-based energy storage module that does not require period replacement.
Functional Operation Testing
As it is possible that some safety devices (such as e-stop switches) may not be actuated for extended periods of time, the various components of the GIS, while highly reliable, will be examined and functionally tested on an annual basis to reduce the probability that an undetected fault exists that could lead to a hazardous condition.
Inspection
Recommended Maintenance Intervals
Five Years (60 Months)
SensaGuard Rectangular Flat Pack
Check the correct operation of the switching circuit. Also check for signs of abuse or interference. Inspect the switch casing for damage. The switch must be disconnected and readjusted.
Biennial (24 Months)
Sesquiennial (18 Months)
1756-L63S
Replace battery in GIC 1756-L63S controller.
1756-LSP
Replace battery in GIC partner 1756-LSP controller.
Annual (12 Month)
800F Emergency Stop Operators
To verify that all safety functions and mechanisms are working properly, you must test them regularly (at least annually).
Biannual or Semiannual (6 Months)
Emergency Stop Devices
TLS1-GD2 & TLS3-GD2 Escape Release
| Note |
|---|
Isolate all power! |
Remove the lid. Inspect all terminals for tightness. Clean out any accumulation of fine dirt etc. Check for any sign of wear or damage, e.g. cam assembly wear, contact oxidization and replace if apparent. Replace covers & tighten screws to specified settings. Reinstate the power & check for correct operation. Re-apply tamper evident varnish or similar compound to fixings.
440T Slamlock Switches Trapped Key Interlock Switches
| Note |
|---|
Isolate all power! |
Check for any sign of wear or damage, e.g. cam assembly wear, contact oxidization and replace if apparent. Clean out any accumulation of fine dirt etc. Lubricate code barrel assembly with light oil or spray e.g., WD40 or alternative product suitable for application. Assessment of operating environment may require unit to be lubricated more frequently. Reinstate the power & check for correct operation. Check the correct operation of the switching circuit. Also check for signs of abuse or tampering. Inspect the unit for damage. Replace the unit if damage is apparent.
Monthly
Weekly
TLS1-GD2 & TLS3-GD2 Escape Release
Check the correct operation of the switching circuit. Also check for signs of abuse or tampering. Inspect the
switch casing for damage. Of particular importance is damage which causes loss of sealing at the lid or conduit entry.
440T Slamlock Switches Trapped Key Interlock Switches
| Note |
|---|
Isolate all power! |
Check for any sign of wear or damage, e.g. cam assembly wear, contact oxidization and replace if apparent. Clean out any accumulation of fine dirt etc. Lubricate code barrel assembly with light oil or spray e.g., WD40 or alternative product suitable for application. Assessment of operating environment may require unit to be lubricated more frequently. Reinstate the power & check for correct operation.
Prosafe Slamlock
Check the correct operation of the switching circuit. Also check for signs of abuse or tampering. Inspect the unit for damage. Replace the unit if damage is apparent.
SensaGuard Rectangular Flat Pack
Check the correct operation of the switching circuit. Also check for signs of abuse or interference. Inspect the switch casing for damage.