Endress+Hauser Micropilot M FMR250 Austauschanleitung Seite 7

Exchange of antenna assembly for Micropilot M FMR250
(with increased near distance dynamic, 26 GHz)
The instrument may only be repaired and maintained by qualified personnel. The instrument documentation, applicable standards,
0 2 1
legal requirements and certificates must be observed!
Modular assemblies may only be exchanged against identical original Endress+Hauser spare parts!
It must be ensured that the supply voltage has been disconnected from the instrument before disassembly.
0 2 1
As example:
housing F12
E N
D R
E S S
O rd
+ H
e r C
A U
S e r. o d e
: S E R
-N o
.:
M e
ss b
M e e re
a su ic h
ri n g
ra n
g e
U 1
m a
6 .. .3 x . 2
4 .. .2 6 V 0 m
0 m
D C
A
I P 6
5
T
A > 7 0
° C
:
t >
8 5 °C
E N
D R
E S S
O rd + H
e r C
A U
S e r. o d e
S E R
-N o :
.:
M e
ss b
M e
e re
a su ic h
ri n g
ra n
g e
U 1 m a
6 .. .3
x . 2
4 .. .2
6 V 0 m
0 m
D C
A
I P 6
5
T
A > 7 0
° C
:
t >
8 5 °C
View to the bottom side
of electronic module
EA0014F/00/a2/10.09
71091596
Ausgabe/revision: 1
Ex i-instruments:
The repair must be performed such that the voltage resistance of the Ex ia circuits relative to ground potential
is maintained. If required, a test can be performed with 500 Veff for 60 seconds.
Ex d-instruments:
The threads in the housing and on the lid must be checked.
In case of damage, the faulty part must be exchanged.
5
3
n a l
m i
T e r
E R E R
U S U S
H A H A
S + S +
E S E S
D R D R
E N E N
2
9
10
8
6
12
Required tools:
• Philips screw driver size 1
• Flat screw driver for M3 / M4
4
• Unplug tool for antenna plug
(order-No. 5200 7646)
• Allen key AF2.5 mm, AF4 mm
1 • Socket key or wrench AF7 mm
torque wrench (3 Nm)
• If necessary tweezers
Before the antenna assembly can be removed, the
electronics have to be taken out of the housing F12, F23 or
T12:
1
Unscrew lid (4 turns).
2
If installed, take display out of holder by pushing the hook
upwards
3
Unplug the display cable.
4
Unscrew the screws of the cover and remove it.
5
Disconnect cables at terminal module
(only for housing F12 and F23).
6
Press lower hook at module housing slightly inwards and ...
7
.... pull front panel off forward.
8 Unplug the connection cable to the terminal module from
the electronics (only for housing F12 and F23).
10
9
Pull terminal module out of the housing
10
(only for housing F12 and F23).
11
10
Untighten the 2 mounting screws of the electronic module.
11
Pull electronic module out of the housing.
12 Unplug antenna cable with tool.
7
The electronic modules are now uninstalled and the antenna
assembly can be exchanged (see description on next page).
After exchange of antenna re-assembly of electronics is in the
reverse order.
Attention!
• Take care on the plug in of the antenna cable
and fix it in the groove.
• Observe proper location of cables.
12 , form a loop