Endress+Hauser Promag 50 Einbauanleitung Seite 2

Power supply for harsh environment (HE)
• In the case of measuring devices in pressure systems requiring official approval:
Comply with the installation instructions and operating conditions in the
special documentation for the pressure equipment directive.
• Before removing the device, stop the process and purge the pipe of dangerous
gases and liquids.
• Hot surfaces! Risk of injury!
Before commencing work, allow the system and measuring device to cool
down to a touchable temperature.
• In the case of measuring devices in custody transfer, the custody transfer status
no longer applies once the lead seal has been removed.
• In the case of measuring devices in safety-related applications in accordance
with EN 61508 or EN 61511, reconfigure and test following any repair.
Document the repair procedure in accordance with the applicable standard(s).
• In the case of Ex-certified measuring devices: Only open in a de-energized
state (once a delay of 10 minutes has elapsed after switching off the power
supply) or in environments which do not have a potentially explosive
atmosphere.
• After removing the electronics cover, there is a risk of electric shock as shock
protection is removed!
• Switch off the measuring device before removing internal covers.
• Service connector:
– do not connect in potentially explosive atmospheres.
– only connect to Endress+Hauser service devices.
• Only open housing for a brief period. Avoid the penetration of foreign bodies,
moisture or contaminants.
• Printed circuit boards for devices in categories II1G, II1D, II 2G, II 2D,
Zone 1 and Class I, Div. 1, Gp. A, B, C, D have a recess or printed board code.
Unauthorized breaking of this coding is not permitted, as explosion protection
will then be invalidated.
Ex. Coding, Ex board
A0011688
• To regain the (explosion) protection of the measuring device:
– seal the openings with genuine covers
– seal cable entries with approved components suitable for the (explosion)
protection.
• Replace defective seals / gaskets by genuine parts from Endress+Hauser only.
• Threads (e.g. of the cover for the electronics and connection compartments)
must be lubricated. Use an acid-free, non-hardening grease if an abrasion
resistant dry lubricant is non-existent.
• If spacing is reduced or the dielectric strength of the measuring device cannot
be guaranteed during repair work, perform a test on completion of the work
(e.g. high-voltage test in accordance with the manufacturer's instructions).
• Risk of damaging electronic components!
Ensure you have a working environment protected from electrostatic
discharge.
• When replacing amplifier boards, I/O boards or submodules, ensure
compatibility with existing software. The process for reading out the software
revision number is described in the Operating Instructions (device functions).
If the software of the board is not compatible, it should be updated using an
operating software package (e.g. FieldCare). In the event of functional
changes, notify the plant owner/operator.
• Danger: Risk of electric shock! Only open the measuring device
in a de-energized state.
• Observe the instructions for transporting and returning the device outlined in
the Operating Instructions.
Endress+Hauser
Ex. Coding, non-Ex board
2 Opening field housing
a
3 mm
3 Opening wall-mounted housing
a
PH2
T20
4 Replacing power supply
A0011689
a
5 Re-assembly
Re-assembly is carried out in reverse order, unless otherwise instructed.
The following must be noted::
a
Promag 50, 53, 55, Promass 80, 83, 84
b
T20
8 mm
A0012025
b
A0011684
Ø < 2 mm
Ø < 0.08 in
A0010901
b
A0011495
A0011494
PH1
A0011685
A0011687
2