Protecto F-SAFE SST 12/20 Serie Instructions De Montage Et D'emploi page 61

"DAS" brightness display (in the normal state, the LED does not light up). The brightness
levels are visible in test mode - operation of the test button.
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Polluted air circulation can result in frequently occurring fault messages and can eventually
lead to shutdowns due to increased concentration values. In order to ensure the normal
operation of the system, the following installation situations should be avoided:
Proximity of cleaning facilities where solvent or cleaning agents are handled.
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Proximity of storage of outgassing substances.
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Proximity of workplaces that generate a lot of dust (sanding, polishing, sand blasting
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etc.)
Proximity of workplaces that generate a lot of moisture (washing facilities, cooking
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facilities, chemical/thermal surface treatment baths, dryers, etc.)
Proximity of nearby painting activity
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Proximity of exhaust gas emissions (engine tests in repair shops, forklift traffic,
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incinerators etc.)
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Installation and commissioning: The device is attached to the cabinet by means of the
connection fitting (accessory). The potential-free signal outputs are connected by the
customer if necessary. The device goes into test mode as soon as it is connected to the mains
supply with the mains plug. The LEDs, potential-free outputs and sensors are then checked
one at a time.
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Function check: A function check should be carried out whenever the device is started up or
as needed (see "Troubleshooting"). When the device is connected, or if you press the TEST
button, all lamps light up for 3 seconds. Following this, the relays for the potential-free
contacts are switched on and off for 3 seconds each. The flow and saturation sensors are
checked in the final test sequence. The flow is checked by switching the technical ventilation
system on and off (5 seconds on, then 5 seconds off). The LEDs for the flow change colour
from RED to GREEN and the result of the test is indicated during the pauses (RED = Error,
GREEN = OK). At the end of the test, the device automatically goes into normal mode. The
exhaust air monitoring function can also be checked by briefly covering over the exhaust vent
in order to throttle the volume flow.
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Adjustment: The exhaust air monitoring function is set to the required flow and saturation at
the factory, so that no further adjustments are necessary when you start up the device for the
first time.
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Repairs: Repair work may only be carried out by authorised persons.
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Maintenance: The device must be checked by an authorised person as and when necessary
(once a year as a minimum) in accordance with TRbF 20 Section 15.4. The filters must be
replaced or cleaned at the same time. Replacement filters can be ordered from the supplier.
We recommend stocking a set of replacement filters to avoid interrupting operation. The
device records the operating time internally and outputs an audible signal (one 3-second beep
every hour after 365 days) to indicate that maintenance is due.
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Optional accessories