Installation / Disassembly In Connection With The Hot Tap Fitting - ABB SensyMaster FMT430 Operating Instructions Manual

44 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
... 6 Installation
... Installing the sensor
Installing the sensor:
1. Place the supplied O-ring in the groove of the sensor
connection.
2. Carefully slide the sensor into the pipe component.
Observe correct alignment to the centering pin in the
process
3. Fasten the sensor to the sensor connection using screws.
Tighten the flange screws simultaneously by applying the
required
torque (torque for supplied screws, non-lubricated,
without use of spring washers: 87 Nm).
Installation / Disassembly in connection with the hot
tap fitting
DANGER
Danger to life due to piping under pressure!
If the changing device is in the measurement position during
disassembly of the sensor, this may pose a danger to life due
to the possibility of the sensor being ejected.
• Disassemble the sensor only if the hot tap fitting is in the
disassemble position.
DANGER
Danger to life due to leaking measuring medium!
If the changing device is in the measurement position during
disassembly of the sensor or gaskets in the changing device
are damaged, leaking measuring medium may pose a danger
to life.
• Make sure that the hot tap fitting is in the disassemble
position.
• If measuring medium should start to leak in spite of this,
immediately stop disassembly of the sensor and tighten
the fixing screws.
• Drain and rinse the piping before disassembling the
sensor, check and repair the hot tap fitting.
CAUTION
Risk of injury due to leaking measuring medium!
When you disassemble the transmitter, small quantities of
measuring medium may leak due to the nature of the design.
• Make sure that sufficient ventilation is guaranteed during
disassembly of the sensor.
NOTE
Damage to the changing device
Using tools or other devices to operate the lock nut can
damage the hot tap fitting.
• Operate the union nut by hand only.