page 56 of 91 USB-QFLCII-14804/0
Inspection lid
closure with inlet
isolation devices
DN 630 and
larger
a) Hold the inspection lid with one hand on the handle which is attached out-
side.
b) Pull the latch pin's ring to unlock the holding device.
Latch pin ring
c) Swivel the inspection door from opened position into closed position.
WARNING
Danger of crushing hazard due to inspection lid that is slammed closed.
Hold the inspection lid with one hand on the handle. Carefully swivel the inspection lid
into the closed position. Do not let the inspection door fall freely!
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d) Tighten the inspection lid locks (fasteners) clockwise
9.5 Inspection for wear and material deposits
Inspect the flap blade, the slanted pipe socket and the housing of the inlet isolation
device for deposits, material build up and wear. Please proceed as follows:
Ensure that the system is safely shut down and disconnected.
a) Open the inspection lid (see Section 9.4, Inspection lid opening and closing)
WARNING
Danger of head injuries due to protruding flap stopper when inspection
lid is opened!
Please watch out for the protruding flap blade stopper while working inside the inlet
isolation device. If necessary, equip the stopper with a bumper during the maintenance
process. The bumper must be removed prior to closing the inspection lid.
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