19
8020216/19YN/V3-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-3K
Subject to change without notice
FOR YOUR SAFETY
2
2.4
Responsibility of user
Avoiding damage
In order to avoid malfunctions that can cause direct or indirect personal injury or property
damage, the operator must ensure:
▸
The maintenance personnel responsible can reach the site immediately, and at any
time.
▸
The maintenance personnel are adequately qualified to react correctly to malfunctions
of the measuring system and any resulting operational interruptions (e.g., when used for
measurement and control purposes).
▸
The malfunctioning equipment is switched off immediately in case of doubt and that
switching off does not cause collateral malfunctions.
Procedure for unsafe operating conditions
If the device is or could be in an unsafe state:
▸
Put the device out of operation.
▸
Disconnect the device from the power voltage and signal voltage.
▸
Secure the device against unallowed or unintentional start-up.
For further information,
see “Recognizing the safe operating state”, page 67
.
Protection devices
According to the respective hazard potential:
▸
Suitable protective devices must be available.
▸
Personal safety equipment must be available in sufficient quantities.
▸
Personal safety equipment must used by the personnel.
Purge gas
The purge gas supply serves to protect device-internal optical surfaces and internal parts
against hot or aggressive gases. The supply must also be left switched on when the system
is at a standstill. Optical subassemblies can be severely damaged in a short time or
combustible gases can escape causing a risk of explosion when the purge gas supply fails
(
see “Non-return valve”, page 31
). The user must ensure that:
▸
The purge gas supply runs reliably and continuously.
▸
A correct connection between the lines and connections is ensured and regularly
checked.
▸
Suitable line material (preferably metal) is used and plug connections are avoided
wherever possible.
▸
Failure of the purge gas supply is immediately detected (e.g., by using pressure
monitors).
▸
The sender/receiver unit is removed from the duct and the duct opening is covered (e.g.
with a blind flange in case of purging gas failure, taking into account explosion protection
(
see “Fastening technology”, page 135
)).
Preventive measures for operating safety
The user must ensure:
▸
Neither failure of the measuring system nor erroneous measurements can lead to
damaging or unsafe operating conditions.
▸
The specified maintenance and inspection tasks are carried out regularly by qualified,
experienced personnel.
