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© Ferno Washington Italia. Rel.15012020
Venice evacuation chair - Venice Clack locking system
TOOLS REQUIRED
1
Hex socket wrench (13 mm or 1/2")
1
6 mm Allen wrench
1
2.5 mm Allen wrench
10.8 Adjusting track tension
Important
Track adjustment requires the intervention of two
operators.
Over time, the tracks can become loose due to wear, or you
may find that the tensioning of the two tracks is not equal.
Track tension adjustment requires the intervention of
two operators.
1. Open the track carriage and engage both rear wheel
brakes.
2. Using a 6 mm Allen wrench and a 13 mm hex socket
wrench, loosen the main screw (Figure 4).
3. Using a 2.5 mm Allen wrench, remove the two small
screws (Figure 5).
4. While one operator turns the tabs of the track tensioner
in the opposite direction to one another, the other
operator gently tightens the two small screws using a
2.5 mm Allen wrench (Figure 6). Take the utmost care
not to over-tighten the screws.
5. While one operator keeps the two tabs of the track
tensioner in position, the other operator tightens the
main screw using a 6 mm Allen wrench and a 13 mm
hex socket wrench.
6. Repeat steps 2 to 5 for the second track.
7. Check the track tension:
○
The tension must be the same on both tracks.
○
Check the tension by pulling the tracks at the
centre of the carriage (not at the upper or lower
end). Measure the space from the frame to the
edge of the track, the distance between the track
and the frame should not exceed 6.4 to 9.5 mm.
Note: It is recommended to assign re-tensioning of the
tracks to technical staff.
Note: If you cannot get the correct tension in the tracks,
the tracks should be replaced. Contact the Ferno Technical
Support Service (page 2).
Operator 2: uses the
wrench
Operator 1: acts on the tabs
Loosen the main screw
Loosen the two small
screws
Figure 4 - Loosen the main screw
Figure 5 - Loosen the two small screws
Figure 6 - Adjusting track tension
