page 33 of 91 USB-QFLCII-14804/0
Surveillance explosion
During an explosion inside a protected system, the flap blade is closed due to
the spreading shock wave
inside the ductwork. When the flap blade is closed,
this closed condition is immediately detected by the closed-position sensor.
The closed-position sensor is wired to a terminal box. The sensor’s signals are
processed through the monitoring panel or control system.
Per NFPA 69, the closed-position sensor shall be used to initiate an immediate,
automatic shutdown of the protected process. See also Section 12.1 Q-FlapCompact II/
Plus inlet isolation device sequence of operation with REMBE
®
monitoring panel.
WARNING
Inspection and
Maintenance The closed-position sensor does not eliminate the need for inspection and
maintenance at regular intervals!
Preventive and thorough inspection and maintenance is essential for the safety
of personnel working within range of the inlet isolation device. In addition,
preventive and thorough maintenance ensures the proper operation of the
system. Please have only qualified staff perform the inspection, maintenance
and service work!
Information and specifications regarding maintenance work and its intervals
stated in the operating instructions
are only recommendations. The
manufacturer does not have practical, long-term data under the specific
operating conditions of each customer. The information stated in the operating
instructions is to be supplemented with your own practical experience.
To Next Page
Loading...
