33
9.3 Lubrication
instructions
Maintenance work should only be
performed by specialists who are
familiar with the installed switching
devices and drive mechanisms they
use. The switching devices and
drives must not be disassembled for
service and maintenance work.
Warning!
The safety provisions
acc. to section 1.5 must
be complied with.
The closing and opening springs
must be released!
Once the front cover has been
removed, the drive is accessible from
the switchgear front end.
1. To this effect, remove the slotted
screws of the interrogating levers
(one per lever) and of the front
cover (4 ea.).
2. Remove interrogating lever.
Remove the front cover by lifting
it forward.
Access to the disconnecting and
earthing switch drives is facilitated if
the front cover of the right-hand
adjacent panel is also removed.
Once maintenance work has been
terminated, reverse disassembly
sequence to re-mount the interroga-
ting levers and the front cover.
Points of lubrication:
The entire drive mechanism is lubri-
cated at the factory using the red-
coloured lubricant KL, which makes
it easily recognizable.
All surfaces and joints in the circuit-
breaker, disconnector and earthing
switch drives which are sliding on
each other must be lubricated.
Important!
The following elements
are not lubricated:
• motor
• ball bearings
• auxiliary releases
• push switches
• blocking coils
• auxiliary switches
Fig. 9.3
The lubrication points can be accessed
Fig. 9.2
Removal of the front cover
To Next Page
Loading...