DURAG D-R 290, Руководство по эксплуатации

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2 | Safety
26 D-R 290
Avoidance of consequential damage in the event of a system fault
In order to prevent and limit faults that can directly or indirectly result in physical inju­
ries or damage to property, the operating company must ensure that:
●
responsible maintenance personnel are available at short notice at all times.
●
Maintenance personnel are trained in the targeted localisation and rectification of
faults in the product D‑R 290 and associated systems.
●
defective system components can be switched off immediately if necessary.
●
switching off the device will not lead to unpredictable consequential faults and
damage.
Device-specific hazards and safety measures
The device is designed so that when used properly no hazard to the operators can
arise.
All devices, where plug connectors are available, are supplied fitted with the required
pre-assembled connection cables.
For all connections and installations performed in relation to the device, the operating
company must comply with:
local regulations for the installation of electrical devices!
Hazard to the device due to purge air failure
The purge air is necessary for protection of the component units. The purge air shields
components from hot and/or aggressive gases. Loss of the purge air supply even for a
(very) short time can lead to malfunctions, damage or total write-off of the measuring
head.
In the event of over-pressure in the measurement duct, the gas can also pass through
the purge air hose to the fan and filter, and damage those system parts also.
NOTICE Potential damage to the measuring head(s) by hot gases in the measurement
duct;
overheating of the measuring head(s)!
▶
Before installing the measuring head(s) in the measurement duct, ensure that the
purge air supply is working.
▶
The purge air supply must be reliably ensured at all times whenever there are
dust-laden/hot/aggressive gases in the measurement duct.
▶
Before performing work that involves shutting down the purge air supply, remove
the measuring head(s) from the measurement duct.
Alternatively:
Perform the work when the plant is shut down (components have cooled down, the
measurement duct is depressurised and free of dust-laden/hot/aggressive gases).
The operating company must therefore ensure that:
●
the purge air supply operates reliably and without interruption and
●
any failure is detected immediately,
●
in the event of failure of the purge air supply, the measuring head must be re­
moved from the duct immediately and the duct opening covered with heat-resistant
material.
An integral fail-safe shutter is available as an option. This shutter allows automatic
isolation of the measuring head from the measurement duct in the event of failure
2.6.4
2.7
2.7.1