Siemens 8DB10 Installation And Operating Instructions Manual page 91

Replacing
desiccant bags in the
circuit-breaker housings
864-5091.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • Revision 06
➭ Refasten the cover of the panel connection housing ④ with 11 bolt-and-washer
assemblies M8x40 (tightening torque: 20 Nm).
Fig. 98: Fastening the cover with the plug sockets
The earthing cable is either pre-assembled at the subframe, or fastened to the subframe
with cable straps.
➭ Bolt the earthing cable to the subframe if the earthing cable is not pre-assembled.
➭ Bolt the earthing cable ⑭ with an hexagonal bolt M8x40 (with plain washer and spring
washer) to the cover of the panel connection housing (tightening torque: 20 Nm).
➭ Repeat the above work operations for all other panel connections in the same panel.
✔ The panel connections are assembled.
The desiccant bags are located behind the cover of the bursting disc at the side of
the circuit-breaker housing. The cover has the inscription "Filter".
Fig. 99: Cover of bursting disc on circuit-breaker housing
ATTENTION
In the ambient air, the desiccant bags lose their effectiveness rapidly and cannot be used
anymore.
➭ Use only desiccant bags whose packing is not damaged and whose humidity indicators in
the packing are blue.
➭ Do not use desiccant bags if the humidity indicators are pink.
➭ After opening the packings, mount the desiccant bags in the gas compartment within
30 minutes and close the gas compartment hermetically.
Installation
①
Cover of bursting disc
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