SICK DUSTHUNTER T - Page 316

FLOWSIC100 Operating Instructions
Gas Velocity Monitor
Maintenance
124 © SICK MAIHAK GmbH · Germany · All rights reserved 8012513/03-2008
5.2 Maintaining the Sender/Receiver Units
The sender/receiver units must be cleaned at regular intervals and inspected for signs of
corrosion and damage. To do so, remove the sender/receiver units from the flanges with
pipe.
ATTENTION
Warning
When carrying out work on the system, always observe the relevant safety precautions and
instructions provided in Section 1.3 (in particular, in Section 1.3.3).
Required tools and resources:
• Spanner for hexagon-socket screws, w/s 2 and 4,
• Screwdriver,
• Possibly a blind plug for flange with pipe,
• Brush, clean cloth, alcohol.
5.2.1 Removing the Sender/Receiver Units
DANGER
Warning
‡ Hot and/or aggressive gases can escape at the removal and installation → use suitable
safety equipment!
‡ Shut the flange with pipe with blank flange after removal of the sender/receiver unit.
‡ Carry out repair work only when hot parts have cooled sufficiently!
‡ Disconnect the purged sender/receiver units from the purge-air supply only after the re-
moval is complete.
Activities
‡ Loosen the cable connection on the sender/receiver unit by rotating the knurled nut on
the plug counterclockwise and carefully removing the plug.
‡ Protect the loose cable ends from dirt or moisture. Seal the socket on the sender/
receiver unit using the associated cap.
ATTENTION
Important
Moist or corroded contacts will cause malfunctions.
‡ Loosen the screws on the sender/receiver unit flange.
‡ Carefully remove the sender/receiver unit and place it in a safe location.
‡ If necessary (for example, if the duct is pressurized), seal the flange with pipe using a
blind plug (available as an option).