10 Fault removal and maintenance
VST_BA1_1.0 | Version 1.0 | 07/2019
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Fault removal and maintenance
INFORMATION
The control unit is maintenance-free and may not be opened.
If the control unit exhibits any damages on the casing, locking catch, seals or flat
plugs, it must be shut down.
Fault removal and cleaning work may only be performed by qualified staff (see
Chapter 2.2). Fault removal and cleaning work may only be performed in idle
condition. Remove the control unit for fault removal and cleaning. The control unit
may never be connected or disconnected on-load or when live. After fault removal
and cleaning work has been completed, please follow the instructions in Chapter 7
Electric installation.
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WARNING!
SUDDEN MOVEMENTS OF COMPLETE SYSTEM OR OF COMPONENTS
Danger due to unprotected moving components.
Before performing any work, shut down the complete system and secure it
against unintended restart.
Before beginning fault removal and maintenance work, please make sure that the
complete system and all parts of the system are in a safe state.
Remove the control unit for fault removal and cleaning.
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CAUTION!
DANGER OF BURNS!
The casing of the control unit may exhibit an elevated temperature.
Please do not touch the casing and let all system components cool down before
working on the system.
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CAUTION!
DAMAGE OR SYSTEM FAILURE DUE TO IMPROPER CLEANING!
The control unit may be damaged due to improper cleaning processes and cause
unintended reactions throughout the complete system.
The control unit should not be cleaned with a high-pressure cleaner or a water
jet.
Remove the control unit for fault removal and cleaning.
