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on the motor or by issuing a test report.
• The surfaces of ignition-protected gaps must not be reworked. Keep these
surfaces metallically clean. Corrosion protection can be achieved by means of
non-hardening sealing materials or sealing grease. The approved sealing
materials include besides the corrosion protection greases available on the
market: Hylomar, by Marston-Domsel
or Admosit and Fluid-D, by Teroson (follow the manufacturer's usage
instructions). This must be observed in particular for the openings in the cover
for connection spaces having a pressure-resistant encapsulation degree of
protection, marking EEx d IIC(B).
• All the screws are to be tightened to the envisaged torque (ÎTable 4,
page 17) and just as many screws as necessary for the envisaged fastening
boreholes are provided. Any damaged screws are to be replaced only with
screws of the same dimensions and quality (at least A2-70).
Repairs
Repairs and changes to explosion-protected machines are to be carried out by
one of the aforementioned sites as per EC directives 94/9/EC and 99/92/EC, in
Germany in compliance with the “Betriebssicherheitsverordnung” as well as
with the safety regulations and requirements of the repair instructions.
Any works relating to the explosion protection must be carried out by the
manufacturer or by a specialized workshop for electrical machinery. If said
works are not performed by the manufacturer, these must be surveyed by an
authorized qualified person.
In Germany a written certificate as per the Operational Safety Order is required
for restarting. In foreign countries the national regulations in force are to be
complied with.
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