Safety Instructions - SIKA VH Série Notice D'utilisation

Safety instructions

1 Safety instructions
Read through the operating manual carefully. Follow all instructions and notices to prevent
injury or damage to property.
Intended use
SIKA flow switches of the VH / VK series must only be used for minimum or maximum
monitoring of liquid flows.
WARNING
The flow switches of the VH / VK series are no safety components in accordance
with Directive 2006/42/EC (Machine Directive).
 Never use the device as a safety component.
The operational safety of the device supplied is only guaranteed by intended use. The speci-
fied limits ( p. 30) may under no circumstances be exceeded.
Qualified personnel
The personnel in charge of the installation, operation and maintenance of the device
•
must hold a relevant qualification. This can be based on training or relevant instructions.
• The electrical connection may only be carried out by a fully qualified electrician.
General safety instructions
• Degree of protection according to EN 60529:
Ensure that the ambient conditions at the place of use do not exceed the requirements of
the specified degree of protection ( p. 30).
Prevent freezing of the medium in the device with appropriate measures.
•
If the flow switch is to be used in ambient temperatures of <4 °C, do not carry out any op-
eration beforehand with pure water, e.g. a test run.
Residual water in the flow switch can result in frost damage.
Only use the device in perfect condition. Damaged or faulty devices must be checked im-
•
mediately and replaced if necessary.
• Do not remove or destroy type plates or other markings on the device, or the warranty is
rendered null and void.
Special safety instructions for flow switches of the type VH...X
The flow switch should only come into contact with media with a minimum ignition tem-
•
perature of >135 °C and ignition energy of >60 µJ.
When installing and before starting-up, it is to be guaranteed that the mechanical process
•
connections are technically tight.
• Always consider the impermeability of the screwing elements for the zone allocation. De-
pending on the operating conditions, it may be necessary to regularly check the imper-
meability of the screwing elements.
- 20 - © SIKA • Ea3000_FlowSwitch • 03/2021
VH / VK