West Control Solutions KS98-1 - Manual (Page 11)

Mounting
Mounting is done in dustfree and dry rooms.
The ambient temperature at the place of installation must not ex-
ceed the permissible limits for specified accuracy given in the
technical data. When mounting several units with high packing
density, sufficient heat dissipation to ensure perfect operation is
required.
For installation of the unit, use the fixing clamps delivered with
the unit.
The sealing devices (e.g. sealing ring) required for the relevant
protection type must also be fitted.
Electrical connections
All electrical wiring must conform to local standards
(e.g. VDE 0100 in Germany). The input leads must be kept separate
from signal and mains leads.
The protective earth must be connected to the relevant terminal
(in the instrument carrier). The cable screening must be connected
to the terminal for grounded measurement. In order to prevent
stray electric interference, we recommend using twisted and
screened input leads.
The electrical connections must be made according to the relevant
connecting diagrams.
See electrical safety, page 23
Electrical safety
The insulation of the instrument meets standard EN 61 010-1 (VDE
0411-1) with contamination degree 2, overvoltage category III,
working voltage 300 V r.m.s. and protection class I.
Galvanically isolated connection groups are marked by lines in the
connecting diagram.
Commissioning
Before instrument switch- on, ensure that the rules given below
were followed:
w Ensure that the supply voltage corresponds to the specifica-
tion on the type label.
w All covers required for contact safety must be fitted.
w Before instrument switch- on, check if other equipment and
/ or facilities connected in the same signal loop is / are not
affected. If necessary, appropriate measures must be taken.
w On instruments with protection class I, the protective earth
must be connected conductingly with the relevant terminal
in the instrument carrier.
w The instrument must be operated only when mounted in its
enclosure.
Operation
Switch on the supply voltage. The instrument is now ready for op-
eration. If necessary, a warm- up time of approx. 1.5 min. should
be taken into account.
a
Warning !
Any interruption of the protective earth in the in -
strument carrier can impair the instrument safety.
Purposeful interruption is not permissible.
If the instrument is damaged to an extent that
safe operation seems impossible, shut it down
and protect it against accidental operation.
Shut- down
For permanent shut- down, disconnect the instrument from all
voltage sources and protect it against accidental operation.
Before instrument switch- off, check that other equipment and / or
facilities connected in the same signal loop is / are not affected. If
necessary, appropriate measures must be taken.
Maintenance and modification
The instrument needs no particular maintenance.
Modifications, maintenance and repair may be carried out only by
trained, authorized persons. For this, the user is invited to contact
the service.
For correct adjustment of wire-hook switches (page 21 ) and for in-
stallation of modular option C, the unit must be withdrawn from
the housing.
a
Warning!
When opening the instruments, or when remo-
ving covers or components, live parts or termi-
nals can be exposed.
Before carrying out such work, the instrument must be discon-
nected from all voltage sources.
After completing such work, re- shut the instrument and re-fit all
covers and components. Check, if the specifications on the type la-
bel are still correct, and change them, if necessary.
Explosion protection
Non-intrinsically safe instruments must not be operated in explo-
sion-hazarded areas. Moreover, the output and input circuits of
the instrument / instrument carrier must not lead into explo-
sion-hazarded areas.
9499-040-82711 Safety notes
I-11