KROHNE OPTITEMP TCA Ex EN - Manual (Page 30)

6
SERVICE
30
OPTITEMP TRA/TCA
www.krohne.com 10/2010 - 4001087001 - Ex AD OPTITEMP TRA/TCA R02 en
Service
6.1 Maintenance
For systems in explosive areas, regular tests are required in order to maintain the proper
condition. The manufacturer recommends the following maintenance measures:
• Check the housing, the cable entries and the feed lines for corrosion and/or damage.
• Check the process connection and the piping connections for leakage.
• Check the entire thermometer for dust deposits.
6.2 Dismantling
You can replace a separately certified intrinsically safe temperature transmitter or measuring
insert with an identical device from the manufacturer:
DANGER!
Maintenance measures of a safety-relevant nature within the meaning of explosion protection
may only be carried out by the manufacturer, his authorised representative or under the
supervision of authorised inspectors.
DANGER!
In order to prevent injury and material damage when replacing components of the industrial
thermometer, always observe the following points:
• To avoid electric shock, dismantle the measuring insert when it is de-energized where
possible. If this is not possible, the basic conditions for intrinsic safety (e.g. no grounding or
connection of different intrinsically safe circuits to one another) must be observed during
dismantling.
• So as not to damage the cover of the connection head, only open it using a suitable tool (e.g. a
screwdriver).
• When replacing both a separately certified intrinsically safe temperature transmitter and a
separately certified intrinsically safe measuring insert with an identical device from the
manufacturer, always refer to the Ex documentation for the devices. Ensure that the
construction is the same by checking the nameplates.
.book Page 30 Friday, November 19, 2010 2:23 PM