Disassembling The Transmitter During Actual Operation - ABB Sensyflow FMT400-VTS Commissioning Instructions

Mounting
4.5.5

Disassembling the transmitter during actual operation

- Using the lock nut, rotate the hot tap fitting into the disassembly position. (Upper limit stop of
lock nut, with lettering 0 - CLOSE - ZU must be visible; see detail A in Fig. 6).
- Electrically disconnect transmitter according to operating instructions.
- Remove the nuts for the dust caps and carefully release the transmitter mounting screws.
WARNING
If you release the transmitter mounting screws while the fitting is in the measuring position, the
flowmeter sensor will fly out.
This can result in severe injuries or death.
Only release the screws when the fitting is in the disassembly position.
CAUTION
When you disassemble the transmitter, small quantities of process gas may escape due to the
nature of the design.
If you are using hazardous gases, this can result in minor injuries.
Ensure adequate ventilation.
WARNING
If the fitting is in the installation position or the hot tap fitting is defective, larger quantities of
hazardous gases can escape when you release the mounting screws.
This can result in severe injuries or death.
Abort the procedure immediately and retighten the screws.
If the fitting is in the disassembly position, the transmitter can only be disassembled once the
pipeline has been emptied, and where necessary, flushed out.
- Pull the transmitter out of the hot tap fitting (do not tip to the side).
22 - EN Sensyflow FMT400-VTS, FMT400-VTCS CI/FMT400-VTS/VTCS-X1