Maintenance - Schuch nD8611 L02 W Series Operating Instructions Manual

6. Maintenance

6.1 Repair- and maintenance works
 The light fitting may only be opened if it has been disconnected from the mains supply
completely!
!
 It is allowed to open the light fitting in a non-explosive (non hazardous) atmosphere
only!
 For applications in dusty atmospheres the light fitting must be cleaned before opening!
 Ensure that no dust can get into the light fitting when it is open!
 Working on the inner parts of the light fitting is allowed in non hazardous atmosphere
only!
 Replace damaged parts by original spare parts from the Adolf Schuch GmbH only!
Spare Parts:
For spare parts inquiries, in addition to the complete type designation of the light fitting, the serial
number of the light fitting must be stated. The serial number is printed on the type plate of the light
fitting – on the bottom left.
6.2 Cleaning the light fitting
 At the plastic parts of the light fitting there is a danger of ignition due to electrostatic
!
charging! For cleaning the housing and cover outside and inside and for cleaning internal
plastic components use only cold or lukewarm water (if necessary with a mild cleaning
agent) together with a viscose sponge or a soft fibrous-free cloth!
Pay attention to the following in case of application of this light fitting in dusty atmospheres:
Dust deposits show heat-insulating properties and thus reduce the service life of the light fitting. It is
necessary to clean the fitting from dust regularly. In case the dust layer may be higher than 5 mm it
must be ensured that the surface temperature of the light fitting does not exceed the maximum
permissible surface temperature of the specific dust considering the thickness of the dust layer. The
dust layer must not exceed 50 mm at any time.
6.3 Regular maintenance work
 Follow the instructions of section 6.1!
!
Explosion-proof light fittings need regular maintenance according to the national rules of the country
they are installed. Especially components which are important for the Explosion Category have to be
carefully checked. Therefore it must to be checked very carefully:

diffuser, housing and gaskets for any kind of damages.

effectiveness of gasket betweeen glass and housing.

the correct installation and tightness of Ex cable glands and closing plug (Torques see section 3,
Technical Data).

all parts of plastic inside the light fitting to attend to colour change, deformation and damaging.

the tight fit of the conductor and the condition of the cable insulation.

that the light fitting is closed correctly and the gasket is effective.
 The restricted breathing of the light fitting is condition for its safe operation and must
therefore be regularly checked under particular consideration of its operating conditions
!
(see section 5.3, Testing the restricted breathing)!
10/2022 L-01510-4-09
•
10