112
8024493/AE00/V1-0/2020-09| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-2K
Subject to change without notice
13
TROUBLESHOOTING
13.6
Troubleshooting measures
13.6.1
Setting the laser alignment
In case the laser is no longer correctly aligned when checking the laser alignment (
“Checking laser alignment”, page 96
), adjust the laser alignment anew.
Implementation criterion: As required.
Ex-condition:
Adjustment must be performed outside the Ex-area.
24 V DC power supply must be available outside the Ex-area.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Unscrew the four flange screws and remove the sender/receiver unit from the duct
(Caution: hot, aggressive and explosive gases may escape; the measuring probe may be
hot) and allow it to cool down if necessary.
3
Switch off the purge gas supply. Remove the purge gas hose. Disconnect the potential
equalization line.
4
Unscrew screw 5328477 (
see “Device views for sender/receiver unit maintenance”,
, views 1 and 2) until you can unscrew the coupling sleeve by turning it to the left
and remove it downwards.
5
Remove the socket (
see “Device views for sender/receiver unit maintenance”, page 95
view 3) from the connector plug.
6
Bring the sender/receiver unit into an Ex-free zone, enable power supply of the sender/
receiver unit.
7
Loosen both screws (SW 7) of the cover and remove the cover.
8
Loosen the four protection tube screws (5340709) and remove the protection tube
upwards by turning it slightly.
9
Loosen and remove the six enclosure screws.
10
Remove the enclosure cover with all attached parts upwards from the enclosure, this is
best done by moving the cover slightly back and forth when pulling it out.
11
Place the cover and enclosure on a flat surface.
12
Connect the power supply.
13
Tighten the 3 stud bolts for adjusting the base plate (
see “Three stud bolts for laser align-
) so that the springs underneath are tensioned.
14
Loosen the screws one whole turn.
15
Check the laser alignment (
see “Checking laser alignment”, page 96
) and adjust it with
the stud bolts so that the laser beam is centered through the aperture opening.
16
Check that the laser beam also goes through the center of the opening of the aperture, if
necessary, align the aperture to the laser (
see “Checking the laser beam for free pas-
17
Insert the enclosure cover together with all attached parts back into the enclosure,
taking care to align the cover with the measuring gap of the probe.
– The non-return valve and the coupling sleeve are arranged in parallel on the vertical
duct.
– When the DUSTHUNTER SP100 Ex-2K is mounted on a horizontal duct, the non-
return valve then points horizontally to the left (
see “Adapt the sender/receiver unit to
).
18
Fasten the cover to the enclosure by means of the six enclosure screws with a torque of
15 Nm.
19
Transport the sender/receiver unit to the measuring location. Connect the potential
equalization.
20
Fit the purge gas hose and switch on the purge gas supply.