Cleaning, Greasing And Lubricating The Operating Mechanisms - Siemens NXPLUS C Installation And Operating Instructions Manual

Service information
Spring-operated/stored-
energy mechanism
Three-position switch
operating mechanism
256/266
➭ Check the smooth operation of tripping rocker ③ . Push the tripping rocker upwards.
➭ Check whether the auxiliary switch ② (option) reacts when the tripping rocker is lifted
(clicking noise). A signal to the telecontrol room occurs if applicable.
Refers to panel types:
• Auxiliary transformer panel
• Switch-disconnector panel
➭ Check the firm seating of all terminal connections ③ .
➭ Check the smooth operation of tripping rocker ⑤ . Move the tripping rocker upwards.
➭ Hook in the fuse compartment cover.
➭ Switch the switch-disconnector to the CLOSED position.
➭ Check whether the auxiliary switch ② (option) reacts when the pull rod ④ is lifted.
✔ The spring-operated/stored-energy mechanism trips. The "Fuse tripped" indicator ① displays
as tripped. The switch-disconnector shows the OPEN position.
➭ In order to restore service readiness, switch the switch-disconnector to the EARTH position.
33.6

Cleaning, greasing and lubricating the operating mechanisms

Use only permitted lubricants and cleaning agents.
For suppliers and manufacturer information of lubricants, see page 257, "Permissible
lubricants".
Cleaning agents: Mild, conventional household cleaner for general degreasing work and
cleaning work (solvent-free)
➭ Clean the external parts of the switchgear and switching devices at regular intervals with a
lint-free wiping cloth.
➭ If necessary, renew the anti-corrosion protection greasing.
➭ If necessary, lubricate the bearings.
Contact by cleaning agents
Can cause property damage. Joints and bearings that cannot be removed may be damaged by
cleaning agents.
➭ Do not use cleaning agents to clean joints and bearings that cannot be removed.
Use the following aids for the spring-operated mechanism, the spring-operated/stored-energy
mechanism and the slow motion mechanism of the three-position switch:
• For bearings, sliding surfaces: Molykote (R) MKL-N Grease
Revision 02 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 806-9004.9
① "Fuse tripped" indicator
②
Auxiliary switches
③ Terminal connections
④ Pull rod
⑤
Tripping rocker
INFORMATION
NOTICE