SICK DUSTHUNTER SP100 Ex-3K, Руководство по эксплуатации

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118 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
13
TROUBLESHOOTING
13.6 Control unit troubleshooting measures
13.6.1 Setting the laser alignment
In case the laser is no longer correctly aligned when checking the laser alignment ( see
“Checking laser alignment”, page 102 ), adjust the laser alignment anew.
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. If necessary,
allow to cool down.
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, page 101
à
) (SW 7) of the hood ( see Fig. 58

).
10
Remove the hood.
11
Loosen the six protection tube screws ( see Fig. 58
â
). Turn the protection tube lightly
and pull it off upwards.
12
Visually inspect O-rings ( see Fig. 58

,

) at this opportunity and replace if there is any
visible wear or damage ( see “Replacing the protection tube O-ring”, page 103 ).
13
Connect and switch the sender/receiver unit power supply on.
14
Tighten or loosen the laser alignment adjustment screws ( see Fig. 59, page 101

), and
check the alignment ( see “Checking laser alignment”, page 102 ) until the alignment is
correct.
15
Disconnect power supply.
16
Refit the probe protection tube. Fasten with the six protection tube screws (torque
5 Nm).
17
Fit the cover and tighten the screws (2 Nm).
18
Bring the sender/receiver unit to the measuring location.
19
Connect the potential equalization line.
20
Fit the purge gas hose and switch on the purge gas supply.
21
Fit the sender/receiver unit on the duct flange (torque 20 Nm).
22
Insert the connector plug and secure with the plug protection guard ( see “Connection
line and plug protection guard.”, page 32 ).
23
Put the complete device back into operation (switch on voltage and check measured and
status values).