MEDC DB3 Manual Tecnico página 4

3.0 MAINTENANCE
During the working life of the unit, it should require little or no maintenance. GRP will resist attack by most acids,
alkalis and chemicals and is as resistant to concentrated acids and alkalis as most metal products.
However, if abnormal or unusual environmental conditions occur due to plant damage or accident etc., then
visual inspection is recommended.
If the unit requires cleaning, then only clean exterior with a damp cloth to avoid electro-static charge build up.
If spare parts are required, then these should only be supplied by MEDC.
If a unit fault should occur, then the unit should be returned to MEDC for repair/replacement.
4.0 CERTIFICATION
1. Certification to: - EN50014:1997, EN50018:1994 & EN50019:1994. EExd IIC & EExde IIC.
For T classes and ambient temperature ranges please see 'Special Conditions of Safe Use' leaflet supplied with
sounder.
ATEX Certificate No.'s:
BAS 00ATEX2097X (EExd) &
BAS 00ATEX2098X (EExde).
The ATEX certificate and the product label carry the ATEX group and category marking: -
II 2 GD
Where:
signifies compliance with ATEX
II signifies suitability for use in surface industries
2 signifies suitability for use in Zone 1
G signifies suitability for use in the presence of gases
D signifies suitability for use in dust atmospheres
The product label also carries the following mark:
This signifies unit compliance to the relevant European directives, in this case 94/9/EC, along with the number
of the notified body issuing the EC type examination certificate.
5.0 APPROVALS
Electromagnetic compatibility to
BS EN 50081-1:1992
BS EN 50081-2:1995
6.0 SPECIAL CONDITIONS FOR SAFE USE
a) TYPE DB3/DB3L –
BAS00ATEX2097X (EExd)
1. This apparatus is not suitable for use in atmospheres containing carbon disulphide.
2. This apparatus is suitable for use only in ambient temperatures as follows:
Type Power Rating
DB3 15W
DB3L 15W
3. Painting and surface finishes, other than those applied by the manufacturer, are not permitted.
4. When used in dust atmospheres the flameproof cable entry devices or stopping plugs shall be selected and
09/10
Ambient Temp.
-20ºC to +70ºC
-55ºC to +70ºC
© MEDC 2010