Festo 8060571, Repair Instructions

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43 / 52 Festo 7ELCC_TB_KFb_en
Note
Reduced system accuracy due to external magnetic fields.
• Avoid external magnetic fields (
,
1 mT) at the sensor.
5.10.1 Removing the old measuring tape
1. Dismantle the sensor mounting with the measuring unit from the end plate.
2. Unscrew the countersunk screws (2x) of the caps (2x) at both ends of the
measuring tape from the cylinder barrel module.
3. Remove caps (2x).
4. Remove the measuring tape carefully from the cylinder barrel module, do
not use sharp-edged tools.
5. Clean the cylinder barrel module to remove adhesive residues.
Typical solvents for cleaning surfaces are a 50 / 50 isopropyl-alcohol / water
mixture or heptane.
5.10.2 Sticking on new measuring tape
Note
– The substrate must be clean, dry and free from dust, grease, oil as well as other contaminants.
– The best adhesive bonding temperature lies b 21 °C and + 38 °C. Bonding is inadvisable if the surfaces to
be bonded are colder than + 10 °C, as in this case the adhesive becomes too solid and thus may make adequate
immediate adhesion hardly achievable. After proper bonding, the bond strength remains even at minus tempera-
tures. From experience, the ultimate adhesion is reached after around 72 hours (at + 21 °C).
– Only use the adhesive tape supplied to stick on.
– To prevent stresses in the magnetic strip, it must not be pinned, twisted or supported or handled with the magnet-
ised plastic strip facing inwards (min. radius of curvature 150 mm).
– When sticking on the magnetic strip note the markings on the magnetic strip and on the sensor head. Incorrect
assembly produces incorrect values. A magnetic strip that is already stuck on is irreparably damaged on removal
and cannot be reused.
– Note the count direction of the measuring system.