PC3000 Complete Installation guide iss 12 - Elektro-Trading

PC3000 Installation Guide
Appendix A
Note: Outputs designated as “Alarm outputs” within the PC3000
itself may not give sufficient protection in all possible circumstances.
When “alarm outputs” are used they should be checked for correct
operation and calibration at regular intervals.
Hazardous atmospheres
No product should be connected to a circuit which passed into or through a hazardous
area unless appropriate precautions are taken (even though the instrument itself
may be located in a safe area). Such an installation should conform to the requirements
of the relevant local regulations.
Unless categorically stated in the published specification of any particular unit, it
should be assumed they are not suitable for direct use in area subject to hazardous
atmospheres.
Procedure in the event of trouble
When PC3000 is connected to its supply, terminals may be 'live' and the opening of
covers or removal of parts is likely to expose live parts. PC3000 should be disconnected
from all voltage sources and isolated before it is opened for any adjustment,
replacement, maintenance or repair. Units suspected of being faulty should be
disconnected and removed to a properly equipped workshop for testing or returned to
the manufacturer for repair. Any attempt to troubleshoot while installed could be
hazardous to personnel and equipment.
The preferred route in the event of a fault occurring within a module is to replace the
entire module. Suspect units should be returned to your nearest Eurotherm office.
If you have any questions regarding any aspect of installing, operating or servicing
your Eurotherm equipment, please contact your nearest Eurotherm Sales or Service
engineer.
Non-volatile memory
The PC3000 Local Controller Module contains a lithium battery. The user's application
programme resides in battery backed RAM. Battery replacement is covered in
chapters 5 and 6.
App.A-5
Appendices