Technical information

Maintenance
5-1
1070 080 059-101 (2001.04) GB
5 Maintenance
DANGEROUS ELECTRICAL VOLTAGE
All maintenance work must be carried out by skilled electricians in
compliance with the valid safety regulations, the mains voltage and
the maximum current input values of the individual system compo-
nents.
Prior to connecting an MF inverter, the following must be strictly
observed:
D Power OFF.
D Provide a safeguard to prevent unintentional reclosing.
D Verify the safe isolation from supply.
D Connect to earth and short circuit.
D Cover up or safeguard all live parts.
DANGEROUS ELECTRICAL VOLTAGE
Prior to any maintenance work - unless described otherwise - the
system must always be switched off!
If the system had been active shortly before, wait until the system is
totally de-energized before starting the maintenance work (e.g. be-
cause of charged capacitors, etc.). For the duration of the mainte-
nance work the system must always be protected against re-closing.
In the event of necessary measurement or test procedures at the ac-
tive system, the applicable safety and accident prevention regula-
tions must be strictly observed. In any case, suitable insulated tools
must be used!
If the medium-frequency inverter housing is to be opened, switch off
the system and wait for at least 5 minutes for the medium-frequency
inverter to de-energize.
Danger of life through inappropriate EMERGENCY-STOP facilities!
EMERGENCY-STOP facilities must be operative in all modes of the
system. Releasing the EMERGENCY-STOP facility must by no means
result in an uncontrolled restart of the system!
Danger of explosion of batteries!
Batteries must not be opened forcefully, recharged, soldered at the
cell body or thrown into fire!
Replace empty batteries with new ones only!