SICK DUSTHUNTER SP100 Ex-2K, Руководство по эксплуатации, Страница: 101 / 130

101 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
MAINTENANCE
12
– 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
the duct geometry”, page 62 ).
11
Fasten the cover to the enclosure by means of the six enclosure screws with a torque of
15 Nm.
12
Transport the sender/receiver unit to the measuring location.
13
Fit the purge gas hose and switch on the purge gas supply.
14
Fit the sender/receiver unit on the duct. Tighten the four flange screws with a torque of
20 Nm.
15
Plug the female connector into the male connector.
16
Slide the coupling sleeve over the receiving bushing and screw on.to stop.
17
Tighten the securing screw of the Ex-Plug-Connector with 3 Nm, the coupling sleeve may
have to be turned back a little bit for this purpose.
18
Put the complete device back into operation (connect potential equalization, switch on
voltage and check measured and status values).
12.6.11 Exchanging the protective hood
Exchange criterion: In case of damage.
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
Fit the new cover and tighten the screws (2 Nm).
7
Switch on the purge gas supply.
8
Fit the sender/receiver unit on the duct and tighten the four flange screws with a torque
of 20 Nm.
9
Put the complete device back into operation (connect potential equalization, switch on
voltage and check measured and status values).
12.6.12 Exchanging the copper seal of the non-return valve
Exchange criterion: In case of damage.
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 and remove the purge gas hose.