Dos And Don'ts With Faast Lt Devices; Pipe Network And Device Installation; Device Operation And Maintenance; Actions That Could Affect The Operability Of The Detector - System Sensor FAAST LT Setup And Troubleshooting Manual

DOS AND DON'TS WITH FAAST LT DEVICES

Pipe network and device installation

DO:
● Clean any residues of swarf and burrs after drilling holes.
● Use the appropriate accessories in environments with
condensing humidity, to prevent moisture from entering the
device. (e.g. water trap.)
● Use appropriate filters in a dusty environment and avoid
vertical pipes feeding directly from the ceiling into the detector;
use elbows or U shaped pipes.
● Use the bracket supplied to mount it on the wall.
● Use IP rated glands on all cable entry points.
● Plan for sufficient space at the side of the detector to allow the
front panel door to open fully.
● Check that all the pipes are fitting together properly and there
are no air leaks or partial blockages.
● It is preferable that the exhaust is returned to the sampling
area wherever possible; this type of piping configuration will
minimise pressure differences across the aspirating unit and
reduce the likelihood of short term flow faults.
DO NOT:
● Use compressed air around the unit. If compressed air is used
to clean the pipework, completely remove the pipe connection
with the FAAST LT detector. Also any cleaning of the pipes with
a vacuum cleaner must be done with pipes disconnected.
● Bend the pipes; use 45° or 90° swept bends.
● Glue the pipe entering the inlets or outlets of the FAAST LT.
The product is designed to fasten without glue. Certain glues
could damage the plastic of the device. If excessive glue is
used it may enter into the device and compromise the internal
functioning. Devices with glued pipes are automatically classed
as out of warranty because they cannot be tested.
● Use the device in a corrosive environment.
● Install the product on the ceiling, or in any orientation other than
vertically on a wall.
● Drill the detector case without using a sealing gland; this will
compromise its IP rating.

Device operation and maintenance

DO
● Take particular care when removing the filters, in order to avoid
dropping any dirt or waste materials into the device or fan area.
● Always turn the aspiration system off and close sample holes
when building or other dusty works are in progress on the
installation site.
● Ensure the filter gasket is fitted after cleaning or changing the
filter.
DO NOT
● Use aerosol smoke to test the device alarm. Canned test
smokes contain oily substances that can leave a residue and
may damage the device.
● Test the device with the inlet and/or outlet closed.
● Clean any area around or inside the device with compressed
air. If compressed air is used to clean the pipework, remove
the pipe connection with the FAAST LT, or install the System
Sensor Reverse Flush Pipe Cleaning unit. Any cleaning of
the pipes with vacuum cleaner must also be done with pipes
disconnected from the FAAST LT.
● Clean the device with any type of solvent, always use a clean
cloth.
● Insert anything into the inlet, outlet openings, or the filter, laser
sensor or the fan areas.
● Do not remove the flexible cable connecting the PCB to the
front panel. (Figure 5: red arrows). This could compromise a
reliable connection between the two PCBs.
Figure 5: PCB cable

Actions that could affect the operability of the detector:

DO NOT DO ANY OF THE FOLLOWING:
● Glue the pipes into the inlet or outlet connections of the FAAST
LT detector.
● Remove or loosen the screws (Figure 6: red arrows) fixing the
PCB cover mounted onto the front panel. This could damage
the PCB or the electronic components mounted on it, and
compromise the sealing protection of the gasket.
Figure 6: Front panel PCB cover
● Loosen or remove the screws (Figure 7: red arrows) fixing the
PCB on the main box. This compromises the sealing of the
device.
Figure 7: Main PCB fixing screws
9 Hor03-01