7
Maintenance and cleaning
CAUTION! Risk of injury due to electric shock or over-pressurisation!
There is a great risk of injury when working on a live or pressurised device.
Make sure that the plant is shut down professionally.
Make sure the system is depressurised before you start working with or remove the
device.
CAUTION! Material damage in case of curing fluids or deposits!
Curing fluids or deposits can damage the device and its components.
Clean the device as soon as possible using a suitable cleaning agent (
§ 7.2.2).
CAUTION! Material damage when opening!
When opening or dismantling the device, critical parts or components can be damaged.
Never open or dismantle the device.
Exception: Open only the VZ 2 AL for cleaning (
§ 7.2.3).
7.1
Maintenance
The VZ...AL is maintenance-free and cannot be repaired by the user. In case of a defect, the
device must be replaced or returned to the manufacturer for repair.
IMPORTANT! Clean in regularly scheduled intervals.
The VZ...AL should be flushed with a suitable cleaning agent in regularly scheduled in-
tervals. The cleaning intervals depend on the properties of the fluid being used.
Comply with the safety data sheet or the specifications of the manufacturer of the flu-
id being used.
7.2
Cleaning
IMPORTANT! Open only the VZ 2 AL for cleaning!
Never dismantle the volume sensors VZ 0.04 AL, VZ 0.2 AL and VZ 5 AL under any cir-
cumstances since that will damage the measuring instrument!
7.2.1
General cleaning
Clean the VZ...AL with a dry or slightly damp lint-free cloth. Do not use sharp objects or ag-
gressive agents for cleaning.
