ARCA Regler GmbH
9 Installation
Series 824
19 / 46
09.2018 / 1.0
9
Installation
Check whether the desired principle of operation - "normal" or "inverted"
- is set correctly. To do this, look at the rear side of the positioner and
check the setting. If it should be necessary to change the setting, refer to
the chapter
[12.1]
Normal / Inversion
"Configuration".
9.1
Safety instructions for assembly
CAUTION
Improper installation
Improper installation can result in damage to the device, its destruction
or the impairment of its function.
Ascertain that the device shows no visible signs of damage each time
before installing it.
Ascertain that the process connections are clean and that suitable seals
and cable glands are used.
Install the device using suitable tools.
CAUTION
Mechanical impact
It is essential that the following sequence is observed during installation
in order to avoid injury or mechanical damage to the positioner/mounting
kit:
► Mechanically mount the positioner
► Connect the pneumatic auxiliary energy
► Connect the auxiliary electrical energy supply
► Carry out the commissioning procedure
ATTENTION
The device protection class becoming null and void
Damage to the device due to open or improperly closed housing. The
protection class specified on the nameplate is no longer guaranteed.
CAUTION
Humid environment/dry compressed air
If the environment is humid, mount the positioner in such a way that
there is no chance of the control axis freezing (getting stuck) at low am-
bient temperatures.
Make sure that water does not enter an open housing or threaded joint.
If the positioner cannot be immediately and permanently mounted and
connected on site, it is possible for water to enter.
In general, only dry compressed air may be used to operate the posi-
tioner. Also refer to the chapter
[16.2]
Data for the basic device
. You
should therefore make use of the usual water separators. In extreme
cases it may be necessary to use an additional dryer. The use of dryers
is particularly important if you operate the positioner at low ambient tem-
peratures. When mounting on the valve block, set the purging air switch
above the pneumatic connections to the "OUT" position.
