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Using a pipe cleaner (or similar) moistened with an isopropanol-based cleaner (3M VBH or
similar), and clean the two vertical tracks (24). Upwards pressure on the balance mecha-
nism will allow the area of track under the vertical rollers to be cleaned.
Install the platform (22) on the balance mechanism (23) and secure with six screws (21),
using Loctite 222E.
Using the adjustment knob (13) wind the slide plate forwards to the central position.
Refit the payload (if required) and rebalance the head.
Horizontal tracks
No dismantling is necessary to clean the horizontal tracks. Proceed as follow:
Remove the payload (if fitted).
Set the balance mechanism to its maximum setting by pushing in the knob (15) and turning
it clockwise to its stop.
Tilt the platform fully backwards and apply the tilt brake (5).
Pull down the flap guard (28) to reveal the bevel gear (26). Access to the horizontal tracks
(2*) is through the holes in the bevel gear, which may be rotated freely.
Using a pipe cleaner (or similar) moistened with an isopropanol-based cleaner (3M VBH or
similar), clean the two horizontal tracks. Upwards pressure on the balance mechanism will
allow the area of track under the horizontal rollers to be cleaned.
Release the flap guard (28) and the tilt brake (5) and return the platform to the horizontal
position.
Refit the payload (if required).
Fig 5 Cleaning the vertical tracks
(21)
(14)
(22)
(24)
(23)
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