Servomex SERVOTOUGH Oxy, Руководство оператора

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01910001B_8 © Servomex Group Limited. 2020
37
Ensure that the pregreased threads of the cover do not become contaminated.
Note:
The threads on the cover are pregreased. You do not need to add any grease or
sealant to the threads before you refit the cover.
1.
Tighten the strain relief on all of the cable
-
glands fited to the base of the analyser
.
2.
Refer
to
Figure 1. Carefully refit the cover to the body of the analyser, so that the
threads on the rear of the cover are correctly aligned with the threads in the analyser
:
pick the cover up by its exterior, and do not touch or contaminate the pregreased
threa
ds on the cover.
3.
Screw on the cover (that is, turn the cover clockwise) to secure it to the analyser
.
Note:
It can help to turn the cover anticlockwise, up to one turn, till you feel or hear the
threads align, before beginning to screw on the cover clockwise.
4. Fully �ghten the cover. If necessary, fit a suitable metal bar between the protruding fins
on the front of the cover to provide addi�onal leverage.
5.
Use the 2 mm hexagonal key supplied to �ghten the locking screw which secures the
cover.
6. Ensure
that the cer�fica�on label is in the correct orienta�on. If necessary, press and
turn the label un�l it is in the correct orienta�on.
5.5
External earth (ground) connection
When the
analyser is installed in a hazardous area, the analysers’ external earth
(ground) connec�on located on the base of the analyser, Figure
2 or
Figure
3
, must
be equipoten�ally bonded locally to the analyser. You must correctly connect it in
compliance with all relevant local, na�onal
and interna�onal standards, to ensure
that the installa�on is safe. Failure to do so will invalidate the hazardous area
cer�fica�on.
To comply with the EMC emissions and suscep�bility standards, the external earth
(ground) connec�on is also considered to be a Func�onal Earth and must always be
connected to a local EMC earth (ground). The conductor that you use must not
exceed 2 metres in
length.
Use
a suitable conductor to connect the analyser external earth (ground) terminal to a local
equipoten�al earth (ground) point: see warning and cau�on above. You can use flexible or solid
conductors, up to 10 mm
2
up to a maximum length of 2 metres.