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NT 1001-C00 11.08 C24 i - C36 i e
12. OPTIONS
12.1 LIQUID DETECTOR
The liquid detector works with single and double ply bel-
lows. It is install on the vent circuit (see § PROTECTION
OF THE PUMP INSTALLATION).
In case of floaded suction or during the cleaning pro-
cess, a bellows puncture will fill the transmission with
liquid. The liquid detector will inform the user when a bel-
lows pucture occur.
12.2 BELLOWS MONITORING SYSTEM
The bellows monitoring system called (BMS) works only
with double ply bellows.
Working principle : During the transmission assembly, a
gas pressure (argon) is introduced in between the bel-
lows ply. A pressure switch is connected on the
bellows's gas filling cavity and all the circuit is sealed.
The gas pressure is 0,6 bar (87 psi) above the maximum
acceptable pressure on the bellows under working
condition.
Any puncture in either one of the two metallic bellows
leads to a pressure drop. When the pressure decrease
under the pressure switch setting, it cuts the electrical
circuit.
To connect the pressure switch, follow the manufacturer
instruction.
Vented cap supplied
with the pump that
must be reused
Liquid detector with certification
level adapted to the ambience
(ATEX if necessary)
T connection
Pump bearing support
