P29 Instruction Manual
8
3.2 Maintenance, repair
Maintenance and repair work may only be performed by trained professionals and
on behalf of the operator of the plant.
The following steps must be performed before beginning maintenance work:
•
Separate the instrument from the electrical power supply.
•
Close gas supply lines.
•
Detach the gas supply lines.
•
Open the instrument.
•
Detach electrical connections.
•
Remove the instrument.
•
Flush the switched-off pressure system for at least 2 minutes with air (P =
100…1000mbar) to remove the gas.
•
Install and start-up the new instrument as described in Section 3.1.
3.3 Shipping
Instruments operated with flammable gases can still contain remnants of these
gases. These must be flushed out before packaging.
To ensure that no remnants of gas are contained in the instrument, any instrument
used in a system with flammable gases
must be flushed with air for at least 2 minutes
while switched off
(P = 100…1000mbar)
in order to remove all traces of the gas. This is
particularly important if several instruments are to be shipped in the same box.
