Endress+Hauser Fieldbus Levelflex M FMP43 Operating Instructions Manual page 25

Levelflex M FMP43 with FOUNDATION Fieldbus
Endress+Hauser
3.5.2 Cleaning of the probe outside of the tank
The probe can be disassembled so it can be cleaned better.
The disassembly requires the following tools:
• Note!
vise with fiber braces (surface protection for the polished probe rod)
• hook wrench for sanitary process connections (diary or SMS)
• open-ended wrench AF27 / AF32 with a torque adjustement up to 20 Nm
Before disassembly, it has to be make sure
that the supply voltage for the instrument is
switched off!
• Note!
Disassembling the housing for calibration
purposes:
When releasing the slotted nut ➀ make sure
to counterhold at the process connection ring
➄ with an open-ended wrench as the adapter
➂ could otherwise be released from the
flange. In hazardous or contaminated areas,
seal the adapter with a protective cover ➆ (see
Accessories) (20 Nm) and integrate into the
local potential equalization where necessary.
• unscrew the grooved nut m with hook
wrench.
• remove the unscrewed housing n together
with the housing adapter from the adapter o
of the process connection. The housing
adapter is still connected with the housing. At
the remote version: remove only the cable
adapter.
• Replace O-ring ➇ where necessary.
Order number, see → ä 86
Disassembly of rod probe:
• unscrew adapter o from the process
connection (as example: flange): unscrew
adapter at the wrench flats with hook wrench
(AF27) and pull it out of the tank together
with the rod probe (length max. 4 m).
• Probe rod ➃
– without wrench flats (until 2009):
clamp the probe rod in a vise.
– with wrench flats (from 2009 onwards):
clamp the probe rod at the wrench flats or
use fitting pliers.
Caution: Protect the surface of the polished
probe rod! Do not damage the surface by
scratching or denting it.
• unscrew adapter o from the probe rod
(approx. 12 rotations counter-clockwise and
remove (plug connection). The probe rod is
screwed in the insulating bush with 4.5 Nm.
• The O-rings r of the probe rod and adapter
are now free accessible respectively
changeable. The probe rod can be cleaned
(autoclaved).
O-ring order numbers, see → ä 86.
2
F12/F23/T12
E N E N
D R D R
L e v L e v E S S E S S
O rd O rd e lf le e lf le + H + H
e r C e r C
o d e o d e x M x M A U A U
S e r. S e r.
-N o -N o : : S E R S E R
.: .:
M e M e
ss b ss b
M e M e e re e re
as u as u ic h ic h
ri n g ri n g
ra n ra n
g e g e
U 1 U 1
m ax m ax
6 .. .3 6 .. .3
4 .. .2 4 .. .2 . 2 0 . 2 0
6 V 6 V
0 m 0 m m m
D C D C
A A
I P 6 I P 6
5 5
T T
A A > 7 0 > 7 0
°C °C
: :
t > t >
8 5 °C 8 5 °C
1
8
5
7
Installation
3
6
6
4
L00-FMP43xxx-17-00-00-xx-007
25