10.22
SEL-400 Series Relays Instruction Manual Date Code 20171006
Testing, Troubleshooting, and Maintenance
Maintenance
Maintenance
Instructions for Cleaning
Use care when cleaning the relay. Use a mild soap or detergent solution and a
damp cloth to clean the chassis. Do not use abrasive materials, polishing com-
pounds, or harsh chemical solvents (such as xylene or acetone) on any surface.
Replacing the Lithium Battery
You can replace the lithium battery in the relay. Perform the following steps to
replace the lithium battery.
Step 1. Remove the relay from service.
a. Follow your company standard procedure for removing a relay
from service.
b. Disconnect power from the relay.
c. Remove the relay from the rack or panel.
d. Retain the GND connection, if possible, and ground the equipment
to an ESD mat.
Step 2. Remove the front panel from the relay.
Step 3. Disconnect the front-panel cable from the front panel.
Step 4. Disconnect the power cable, interface board cable(s), and input board
analog cable from the main board.
Step 5. Pull out the drawout tray containing the main board. In some
SEL-400 series relays, the main board is not in a drawout tray. In
these cases, you will need to remove the top cover to access the bat-
tery.
Step 6. Locate the lithium battery.
The lithium battery is at the front of the main board.
Step 7. Remove the spent battery from beneath the clip of the battery holder.
Step 8. Replace the battery with an exact replacement.
Use a 3 V lithium coin cell, Ray-O-Vac No. BR2335 or equivalent.
The positive side (+) of the battery faces up.
Step 9. Reinstall the relay main board drawout tray.
Step 10. Reattach the power cable, interface board cable(s), and input board
analog cable.
Step 11. Reconnect the front-panel cable to the front panel.
Step 12. Reattach the front panel.
Step 13. Set the relay date and time via the communications ports or front
panel (see Making Simple Settings Changes on page 3.15).
Step 14. Follow your company’s standard procedure to return the relay to ser-
vice.
There is danger of explosion if the bat-
tery is incorrectly replaced. Replace
only with Ray-O-Vac no. BR2335 or
equivalent recommended by manufac-
turer. See Owner's Manual for safety
instructions. The battery used in this
device may present a fire or chemical
burn hazard if mistreated. Do not
recharge, disassemble, heat above
100°C or incinerate. Dispose of used
batteries according to the manufac-
turer’s instructions. Keep battery out
of reach of children.
Equipment components are sensitive
to electrostatic discharge (ESD). Unde-
tectable permanent damage can result
if you do not use proper ESD proce-
dures. Ground yourself, your work sur-
face, and this equipment before
removing any cover from this equip-
ment. If your facility is not equipped to
work with these components, contact
SEL about returning this device and
related SEL equipment for service.
To Next Page
Loading...
