Maintenance
14
Building Technologies
FL-III Maintenance and Repair
CPS Fire Safety
08.2012
3.3
Maintenance work on the sensor cable
In principle, the sensor cable does not require any maintenance. However, during
an annual inspection it is useful to perform a visual inspection of the sensor cables,
the connection cables and the connectors with regard to visible damage such as
breaks, indentations, strong kinks or bend radii that are too small.
Fibre-optical connectors of sensor cables must always be carefully cleaned before
they are connected to the fibre-optical ports of the controller and must be inspected
with a microscope suitable for fibre-optical connectors.
The controller is delivered with clean internal fibre-optical connectors. Unassigned
ports are factory-provided fitted with dummy connectors in order to prevent
contamination or damage and do not require cleaning before their first use.
During routine maintenance, cleaning of the fibre-optical connectors is only
required when the insertion loss of a fibre-optical connector is too high or the
temperature profile shows anomalies. Cleaning is also required when the message
“CHECK CONNECTOR” is displayed during the check of a channel with the “Quick
Start” feature of the software FibroManager.
3.3.1 Tools
The following tools are required for the check and cleaning of the fibre-optical
connectors:
a suitable microscope for fibre-optical connectors with a magnification of at least
100x up to a maximum of 200x
service adapter E2000
suitable cleaning cloth for glass fibre or optics
suitable ultra-pure solvent
ferrule cleaner
infrared sensor card
Examples
Fig. 5
Microscope with 200x magnification, built-in laser filter and LED
illumination for inspection of fibre-optical connectors
Fig. 6
Ferrule cleaner (example type Ferrule Mate
TM
)