SICK DUSTHUNTER SP100 Ex-3K, Руководство по эксплуатации

Страница: 102 / 140

102 8020216/19YN/V3-0/2020-12| 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-3K
Subject to change without notice
12
MAINTENANCE
12.6.1 Checking laser alignment
To be done: As required.
Ex-condition: Check must be performed outside the Ex-area.
24 V DC power supply must be available outside the Ex-area ( see
“Power supply without control unit”, page 100 ).
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Loosen the flange screws. Remove the sender/receiver unit from the duct. Allow to cool
down, if necessary.
3
Switch off the purge gas supply.
4
Remove the purge gas hose.
5
Disconnect the potential equalization line.
6
Disconnect the connection plug, for this purpose release the plug protection guard ( see
“Connection line and plug protection guard.”, page 32 ).
7
Move the sender/receiver unit out of the Ex-zone into a safe area.
8
Place the enclosure rear side of the sender/receiver unit on a flat surface.
9
Loosen both screws ( see Fig. 58
à
) (SW 7) of the hood ( see Fig. 58

).
10
Remove the hood.
11
Connect and switch the sender/receiver unit power supply on.
12
Check the alignment of the light trap with a suitable object or finger, as shown in the
following Figure, the laser must be exactly in the middle.
13
If necessary, adjust the alignment ( see “Setting the laser alignment”, page 118 ).
14
Disconnect the sender/receiver unit from the power supply.
15
Refit the probe protection tube. Fasten with the six protection tube screws (torque
5 Nm).
16
Fit the cover and tighten the screws (2 Nm).
17
Bring the sender/receiver unit to the measuring location.
18
Connect the potential equalization line.
19
Fit the purge gas hose and switch on the purge gas supply.
20
Fit the sender/receiver unit on the duct flange (torque 20 Nm).
21
Insert the connector plug and secure with the plug protection guard ( see “Connection
line and plug protection guard.”, page 32 ).
22
Put the complete device back into operation (switch on voltage and check measured and
status values).
Fig. 60: Checking laser alignment