SICK DUSTHUNTER SP100 Ex-3K, Руководство по эксплуатации

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104 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
12.6.4 Replacing the sinter filter
Replacement criterion: Every 2 years (manufacturer's recommendation).
Ex-condition: Replacement can be carried out in the Ex-area when the absence
of an explosive atmosphere has been verified with a gas warning
device.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Disconnect the potential equalization line, if necessary.
3
Unscrew the 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.
4
Place the enclosure rear side of the sender/receiver unit on a flat surface.
5
Switch off purge gas supply, if necessary.
6
Loosen both screws ( see Fig. 58
à
) (SW 7) of hood ( see Fig. 58

). Remove the hood.
7
Loosen the four protection tube screws ( see Fig. 58
â
). Turn the protection tube lightly
and pull it off upwards.
8
Loosen the two fixing screws and replace sinter filter ( see Fig. 59

).
9
Slightly tighten the fixing screws again.
10
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 ).
11
Refit the probe protection tube. Fasten with the six protection tube screws (torque
5 Nm).
12
Replace the hood and fasten it again with the two screws (torque 2 Nm)
13
Switch on the purge gas supply.
14
Fit the sender/receiver unit on the duct flange (torque 20 Nm).
15
Connect the potential equalization line.
16
Put the complete device back into operation (switch on voltage and check measured and
status values).
12.6.5 Replacing the flange seal
Replacement criterion: Every 2 years (manufacturer's recommendation).
Ex-condition: Replacement can be carried out in the Ex-area when the absence of
an explosive atmosphere has been verified with a gas warning
device.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Disconnect the potential equalization line, if necessary.
3
Loosen the flange screws and remove the sender/receiver unit from the duct and allow it
to cool down, if necessary.
4
Replace the old flange seal with a new one ( see Fig. 58

).
5
Fit the sender/receiver unit back on the duct flange (torque 20 Nm).
6
Connect the potential equalization line.
7
Put the complete device back into operation (switch on voltage and check measured and
status values).