AL-KO AT4F Series, Operating And Assembly Instruction Manual

Page: 54 / 140

Translation of original operating instructions
54
AL-KO AT4F ATEX
NOTE
For outside temperatures > 10 °C, the solvent welding agent or hot air dryer can be used.
At lower outside temperatures, welding with the hot air dryer is to be used to seal the unit separation
points.
Check the housing seal carefully.
Weatherproof units with height offset
4
5
6
1
2
3
Fig. 37 Weatherproof units with height offset
1 Panel 4 Microbially inert sealing material
2 Lower component 5 Foil bracket
3 Higher component 6 Roof membrane
Fig. 38 Example representation of a contact disc with screw
Step Action
1 Before placing the components together, unscrew the panel (1) of the higher component (3). To do this, you must first
disassemble the equipotential bonding cable in the unit from this panel.
The panel is fastened to the outside with bolts and contact washers.
2 Position the lower component (2).
3 Align the components.
4 Screw the components together (see chapter "5.3 Assembly of separated housing" on page 39).
5 Insert the foil bracket (5) under the roof membrane (6) and then onto the component (3).
6 Weld the foil bracket (5) to the roof membrane (6) (see chapter "5.5.2.3 Sealing of the unit separation points with sol-
vent welding agent for weatherproof units" on page 51).
7 Seal the vertical sides and the upper horizontal edge of the foil bracket (5) with microbially inert sealing material (4).
8 Screw the unscrewed panel (1) back on. Ensure that pressure is also applied to the foil bracket (5). Ensure that the cov-
er (1) is screwed back on with the screws and the contact washers.
The correct position of the contact washer is critical here.
9 Restore the equipotential bonding of the unit and the cover (1). To do this, use the equipotential bonding cable in the
unit and reattach it to the cover (1).
10 Perform a check of the functionality of the potential integration. Confirm the test and store it in the unit documentation.