27
8012707/ZVF9/V2-1/2019-04 | SICK
O P E R A T I N G I N S T R U C T I O N S | GM32
Subject to change without notice
START-UP
4
Preventing overpressure in the equipment
Purge air unit SLV4
4.2
Required material (not included in the scope of delivery)
WARNING: Hazard through overpressure in cavities!
With GPP probes, overpressure can arise in the reflector compartment or in the gas
lines, e.g., through deposits of penetrating liquid, when the probe comes into contact
with the hot sample gas. Open connections carefully, make visual and continuity
checks.
▸
Make regular visual and continuity checks of the cavities.
▸
At the same time, take all precautionary measures described in the Operating
Instructions when opening the connections.
WARNING: Risk of fire through hot gas escaping in installations with
overpressure conditions
On installations with overpressure, the purge air hose can be severely damaged by
escaping hot gas and can catch fire depending on the temperature.
On installations with overpressure as well as gas temperatures over 200°C:
▸
Ensure reverse flow is prevented by fitting a (trip) flap or a valve.
▸
Regularly check the functionality of the reverse flow safeguard.
Material required
Part number
Required for
Optical adjustment device
2034121
Aligning the purge air fixtures
Optical cleaning cloth
4003353
Cleaning the windows
19 mm jaw wrench
---
Aligning the flanges
Personal protective equipment
---
Protection when working on the
stack
Table 6: Material required for start-up
