Safety instructions
VH500
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© SIKA • Ea2400_VH500 • 08/2021
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 may only be used for minimum or maximum monitoring of liquid flows.
WARNING
The flow switches of the series VH500 are no safety component in accordance
with Directive 2006/42/EG (Machine Directive).
Never use the device as a safety component.
IMPORTANT
The flow switch can be damaged if it is exposed to strong vibrations in dry pipe-
lines, e.g. in case of an interruption with a run-empty pipeline.
Check the functionality of the flow switch before restarting after an interrup-
tion.
The operational safety of the device supplied is only guaranteed by intended use. The speci-
fied limits (
p. 26) under no circumstances be exceeded.
Before installing the device, check that the wetted materials of the device are compatible with
the media being used (
p. 28).
Qualified personnel
•
The personnel who are charged for the installation, operation and maintenance of the de-
vice must hold a relevant qualification. This can be based on training or relevant tuition.
•
The electrical connection should 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 site of use does not exceed the requirements
for the stated protection rating (
p. 26).
•
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 if it is in perfect condition. Damaged or faulty devices must be
checked immediately and, if necessary, replaced.
•
Do not remove or obliterate type plates or other markings on the device, as otherwise,
the warranty is rendered null and void.
