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6 Maintenance
6.5.4
Maintenance work on components with drive units
All individually deactivating drives are equipped with a maintenance switch and can be
individually disconnected from the mains for maintenance purposes.
No maintenance switches are permitted for electrical drive units which cannot be indi-
vidually deactivated for safety reasons. The main switch fulfils the function of a mainte-
nance switch. During maintenance work the system is shut down, switched off, secured
against reactivation and cooled if necessary.
Drive units can be accidentally started which can cause dangerous situations.
Before maintenance work disconnect the drive units from the power supply with the
maintenance switch.
In addition the maintenance switches must be locked with a personal padlock and
secured against reactivation.
6.5.5
Dangers resulting from flue gas
CO
is a colourless gas and generally tasteless and odourless. Therefore, it is virtually
2
unnoticeable by the human sensory organs.
High flue gas concentrations (CO and CO
the risk of suffocation.
Operation without a connection to the flue gas pipes is prohibited.
Always close cleaning openings after cleaning.
D-60
i
WARNING!
i
WARNING!
Example - de-ashing:
The maintenance switches are general-
ly mounted near the drives.
) in the air can result in unconsciousness and
2
Underfeed grate UTSK
1.10 en
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