Installing The Sensor; Opening And Closing The Terminal Box - ABB ProcessMaster FEP611 Operating Instructions Manual

5.2

Installing the sensor

NOTE
Potential damage to device!
— The use of graphite with the flange or process
connection gaskets is prohibited. This is because, in
some instances, an electrically conductive coating may
form on the inside of the meter tube.
— Vacuum shocks in the piping should be avoided to
prevent damage to the liners (PTFE). Vacuum shocks
can destroy the device.
The flowmeter sensor can be installed at any location in the
piping while taking the installation conditions into account.
1. Remove protective plates, if present, to the right and left
of the meter tube. To prevent possible leakage, make sure
that the liner on the flange is not cut or damaged.
2. Position the flowmeter sensor coplanar and centered
between the piping.
3. Install gaskets between the surfaces; see chapter
"Gaskets" on page 13.
NOTE
For achieve the best results, ensure the gaskets fit
concentrically with the meter tube
To ensure that the flow profile is not distorted, the gaskets
must not protrude into the piping.
4. Use the appropriate screws for the holes in accordance
with chapter "Torque information" on page 87.
5. Slightly grease the threaded nuts.
6. Tighten the nuts in a crosswise manner as shown in the
figure. Observe the tightening torques in accordance with
chapter "Torque information" on page 87!
First tighten the nuts to approx. 50 % of the maximum
torque, then to 80 %, and finally a third time to the
maximum torque. Do not exceed the maximum torque.
1 3
4 2
Fig. 22: Tightening sequence for the flange screws
18 OI/FEP610/FEH610-EN Rev. B | ProcessMaster FEP610, HygienicMaster FEH610
5
1
3
8
4
7
6 2
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5.3

Opening and closing the terminal box

WARNING
Risk of injury due to live parts!
When the housing is open, contact protection is not provided
and EMC protection is limited.
Before opening the housing, switch off the power supply.
NOTE
Impairment of the IP rating
— Make sure that the cover of the power supply terminals
is mounted correctly.
— Check the O-ring gasket for damage and replace it if
necessary before closing the housing cover.
— Check that the O-ring gasket is properly seated when
closing the housing cover.
1
Fig. 23: Cover safety device (example)
To open the housing, release the cover safety device by
1
screwing in the screw .
After closing the housing, lock the housing cover by
1
unscrewing the screw .
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