7.8.2
Switch the pressurized enclosure on
1
Switch the main power supply of the pressurized enclosure system on (at an exter‐
nal source).
2
The pressurized enclosure system starts pre-purging the enclosure with protective
gas. The Ex control unit signals the end of the pre-purge phase.
3
Switch the main power supply of the measuring system on (at an external source).
7.9
Optical fine alignment of the sender/receiver unit
CAUTION
Hazard by laser radiation
Device with a laser with protection class 1.
b
Do not hold any reflecting objects or objects that bundle the laser beam in the
laser beam.
b
During installation or maintenance: Disconnect the power supply before opening
the device.
Prerequisite
•
The power supply of the evaluation unit is switched on.
•
The device is in Maintenance mode.
Components of the alignment tool on the GM700
1
2
3
4
5
Figure 28: Components of the alignment tool on the SR-unit
1
Visor of the optical alignment tool
2
LED display for rough optical alignment
3
Alignment tool lever
4
Y-alignment: Vertical
5
X-alignment: Horizontal
Carry out optical fine alignment of the SR-unit
1
First turn the lever of the built-in alignment tool (3) and then pull it down to bring it
to the adjustment position, (see Figure above).
2
Look through visor (1) on the right enclosure side diagonally from above to the mir‐
ror with the target.
7
COMMISSIONING
54
O P E R A T I N G I N S T R U C T I O N S | GM700 Ex
8019532/100Q/V1-1/2018-08 | SICK
Subject to change without notice