98
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
12
MAINTENANCE
12.6.5
Exchanging the copper seal in the cleaning opening
Exchange criterion: Every 2 years (manufacturer's recommendation).
Ex-condition:
Replacement can be carried out in the Ex-area when the absence of a
potentially 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. Disconnect the potential equalization line.
2
Use a wrench (SW 24) to unscrew the screw on the cleaning opening in an anti-clockwise
direction (Caution: hot, aggressive and explosive gases may escape; the measuring
probe may be hot).
3
Replace the old copper sealing ring (5324873) with a new one.
4
Retighten the screw (torque 30 Nm).
5
Put the complete device back into operation (connect potential equalization, switch on
voltage and check measured and status values).
12.6.6
Exchanging the sinter filter
Exchange criterion: Every 2 years (manufacturer's recommendation).
Ex-condition:
Replacement can be carried out in the Ex-area when the absence of a
potentially 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. Disconnect the potential equalization line.
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.
4
Place the enclosure rear side of the sender/receiver unit on a flat surface.
5
Loosen both screws (SW 7) of the cover and remove the cover.
6
Loosen the four protection tube screws (5340709) and remove the protection tube
upwards by turning it slightly.
7
Loosen the two fixing screws and replace the sinter filter (7047714).
8
Slightly tighten the fixing screws again.
9
Fasten with the four protection tube screws (torque 15 Nm).
10
Switch on the purge gas supply.
11
Fit the sender/receiver unit on the duct and tighten the four flange screws with a torque
of 20 Nm.
12
Put the complete device back into operation (connect potential equalization, switch on
voltage and check measured and status values).