Stahl EC-940-DUA Series, Instruction Manual

Page: 70 / 606

EN - English - I
nstruc
tion manual
68 MNTCMPXT_1824_EN
11 Maintenance and
cleaning
To reduce the risk of ignition, don’t open
the device when a potentially explosive
atmosphere is present.
Before doing any technical work on the
device, disconnect the power supply.
Repair of this equipment shall be carried
out by suitably trained or supervised by
STAHL personnel in accordance with the
applicable code of practice (e.g. IEC/EN
60079-19).
11.1 System configuration and
statistics display
When contacting STAHL for assistance please go
to the configuration and statistic page and send a
screenshot or serial number and device identification
code.
11.2 Maintenance and cleaning
by users
11.2.1 Routine maintenance (to be
performed on a periodic basis)
11.2.1.1 Cleaning the glass
The product must be cleaned with water or with
another liquid detergent that does not create a
hazard.
11.2.1.2 Cleaning the germanium window
Remove the protective grid and spacer unscrewing
the socket flat cap screws on the front of the
enclosure using 2mm (0.08in) no sparking hex
wrench.
Fig. 126
Use neutral soap diluted with water. Take extra care
not to scratch or damage the outer surface treated
with carbon coating. Damage to this coating could
interfere with the transparency of the surface to
infrared light. Do not use ethyl alcohol, solvents,
hydrogenated hydrocarbons, strong acids or alkalis.
Using these products will irreparably damage the
germanium surface.
Once done cleaning, reassemble the spacer and the
protection grid.
11.2.1.3 Cleaning the product
This should be done regularly. If a layer of dust
accumulates on the outside of the housing, it should
never be more than 5mm thick. The device should be
cleaned using a damp cloth; compressed air must not
be used. Maintenance frequency will depend on the
type of environment in which the housing is used.
11.2.1.4 Inspecting the cables
The cables should not show signs of damage or wear,
which could generate hazardous situations. In this
case extraordinary maintenance is necessary.