AL-KO AT4F Series, Operating And Assembly Instruction Manual

Page: 84 / 140

Translation of original operating instructions
84
AL-KO AT4F ATEX
Before commissioning, always ensure the following:
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that the AT4F ATEX unit has been installed as described in these operating and assembly instructions (see chapter
"5 Assembly" on page 34).
„
that all the filter elements are correctly installed. Check the tight fit of all installed filters, in particular the fine dust
filters.
„
that the duct system and the water and drain pipe are properly connected to the unit.
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that the fresh air inlet is at a sufficient distance from contamination sources (kitchen hood extraction, central dust
extraction, etc.).
„
that the electrical installations have been implemented completely and professionally.
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that all media connections have been professionally connected and are leak-tight.
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that all components are installed professionally and integrated into the unit potential, see chapter "5.2 Preparations"
on page 35 . Document this test.
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that only components/components suitable for the required ATEX marking have been used.
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that no impermissible changes have been made to components.
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that work on/in the AT4F ATEX unit takes place during ATEX zone freedom.
6.2 Before system start
WARNING
To be carried out by the person responsible:
„
After carrying out the work, ensure that there are no longer any persons in the installation.
„
Ensure that work on/in the AT4F ATEX unit takes place during ATEX zone freedom.
„
Before commissioning the installation, ensure that all factory-installed protective meas-
ures are functioning correctly.
„
After carrying out the work, ensure that all maintenance doors, inspection covers and
housing covers are integrated into the unit potential. After each release of these equipo-
tential bonding connections, they must be restored, checked and documented.
WARNING
Risk of injuries due to run-on of fans.
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Only open the inspection doors only when the fans are switched off and stationary.
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Observe the delay time of the fans. Observe a waiting time of 3 minutes, until the fan im -
pellers are stationary, before opening the inspection doors.
„
Never brake the impellers of the fans by hand or using an object.