e1485b
7
Fire & Security Products
Siemens Building Technologies Group
06.2001
6 Commissioning
To prevent unnecessary soiling during the construction phase,
the detectors should be inserted into the bases just before the
system is put into service.
For detailed information, see «Fire Detection in Explosion-hazard
Areas», document e1204. .
7 Maintenance
7.1 Functional check
A functional check of the detectors must be performed periodically
(usually once per year) by forcing each detector to respond by
means of a suitable testing device (RE6 or DZ1192 for DO1101-Ex
or RE6T for DT1101-Ex/DT1102-Ex). Detectors that do not respond
or which are mechanically damaged must be replaced.
7.2 Overhaul
All detectors should be jointly replaced and factory overhauled in in-
tervals of 2 to 8 years, depending on the environmental conditions
and the severity of contamination.
Important !
The DZ1193 and RE6T detector tester and the DZ1194 detector
test set must only be used in areas where there is no explosion-
hazard!
Electrostatic danger
The housing is made of plastic and has a surface resistance of
>1GigaΩ which means there is a risk of electrostatic discharge.
Therefore the manual call point should not be located where there
is powerful ventilation. Cleaning with solvents is forbidden.
7.3 On-site measurement with the DZ1194 detector test set
OptoRex DO1101-Ex
The voltage ∆
U3A
can be measured and alarm activation
checked with the DZ1194 detector test set. The ∆
U3A
volt-
age measured is directly proportional to the remaining volt-
age increase for alarm.
ThermoRex DT1101-Ex / DT1102-Ex
The operating current can be measured and alarm activa-
tion checked with the DZ1194 detector test set.
Detectors with values which lie outside those in the technical data
must be replaced.
!
!
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