User Manual

Supplementary Installation and Operating Instructions BM 102 ATEX 11
5 Service / Maintenance
The device normally requires no maintenance when used for the intended purpose and for
standard applications.
5.1 Signal converter
The signal converter electronic equipment is maintenance-free under normal operating conditions
and when used for the intended purpose.
Within the scope of checks required to be carried out in hazardous locations to maintain systems
in proper working order, the following visual inspections should be carried out at regular intervals:
• Check housing, cable entries and all incoming cables for signs of corrosion and damage.
• Check the tank connections for leakages
5.2 Probes
The probes have no maintenance requirement when used for the intended purpose and under
normal operating conditions. However, heavy build-up of deposits on the probe can cause
measurement deviations or faulty operation.
If the probe is dirty, clean according to the directions given in the standard Installation and
Operating Instructions. When dismantling the probe, be aware of working conditions (e.g. check
for presence of flammable liquid and/or explosive atmosphere in or around the tank, pressurized
tank, etc.).
5.3 Replacement of complete device
Make sure that all process connections and the tank are non-pressurized.
In connection with environmentally critical process products, carefully decontaminate the wetted
parts of the flange system after dismantling.
5.4 Maintenance
Maintenance work of a safety-relevant nature within the meaning of explosion protection may only
be carried out by the manufacturer, his authorized representative or under the supervision of
authorized inspectors.