Authorised specialist personnel must:
carry out necessary repair work professionally according to the rules of
technology and in accordance with the applicable regulations;
observe the instructions for repairing the supplied parts in the relevant operating
manuals supplied with the delivery;
not make improvised repairs to worn or damaged components;
replace worn or damaged components with spare parts; and
only use suitable spare parts. Section 13 Spare parts for VN2020 / VN2020 EX
The most important repair work is described below.
9.3.1 Replacing the VN2020 / VN2020 EX measuring head
A properly functioning measuring head guarantees proper and reliable operation of the
VN2020 oil mist detector. In the event of a defect or continuous malfunction, the
measuring head has to be replaced. The measuring head is a spare part and can be
ordered separately from Schaller Automation using the serial number, as follows:
• VN2020 measuring head: Part number 290044
• VN2020 EX: Part number 290045
The information on the name plate of the connection box must be provided for queries
regarding measuring head spare parts. Please use the return form to send us the
necessary information.
Maintenance work on the oil mist detector
Observe the safety instructions in Section 9
Section 9 Maintenance and repair
Operation in potentially explosive atmosphere not safe
Risk of mixing up
Make sure that you have a replacement VN2020 EX measuring head for your
VN2020 EX oil mist detector.
Please also note the clear identification features in Section 4.2 Component
overview for the VISATRON® VN2020 / VN2020 EX oil mist detector
Personal protective equipment
Operating the device or working on the device without protective equipment may result
in serious injury. For the workplace PPE, the following protective equipment must be
used:
Safety glasses in accordance with DIN EN 166 or DIN EN 170
Safety helmet in accordance with DIN EN 397 and DIN EN 50365
ESD safety shoes according to ESD standard DIN EN 61340-5-1
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