Maintenance
FLOWSIC100 · Operating Instructions · 8012513/YSA5/V 2-1/2016-07 · © SICK Engineering GmbH 159
Subject to change without notice
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
tube.
Required tools and aids:
● Spanner for Allen screws, SW 2 and 4
● Screwdriver
● Possibly a blind plug for flange with tube
● Brush, clean cloth, alcohol
5.2.1 Removing the sender/receiver units
Procedure
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 screw cap.
Loosen the screws on the sender/receiver unit flange.
Carefully remove the sender/receiver unit and place it in a suitable location.
If necessary (for example, if the duct is pressurized), seal the flange with tube using a
blind plug (available as an option).
WARNING:
When carrying out any work on the system, observe the relevant safety precau-
tions as well as the safety instructions in § 1.3 (in particular § 1.3.3).
WARNING:
Hot and/or aggressive gases can escape when removing and installing
sender/receiver units
use suitable safety equipment!
Shut the flange with tube with a blind flange after removing the sender/
receiver unit.
Carry out repair work only when hot parts have cooled sufficiently!
Disconnect the purged sender/receiver units from the purge/cooling air
supply only after complete removal.
NOTICE:
Moist or corroded contacts will cause malfunctions.
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