Section 2
Page 2 - 4
MODEL 346 INSTALLATION AND OPERATION MANUAL
HA243821
Issue 5 Mar 98
2.1.1 CHASSIS REMOVAL (Cont.)
Once removed from the case, the recorder should be inspected for mechanical integrity. If the recorder is to be
stored before use, return it to the case, and replace it in the plastic bag in which it was received.
2.2 MECHANICAL INSTALLATION
The recorder is intended for installation in a 138 mm square cutout in a vertical or sloping (up to 45 degrees from
vertical) panel.
Note...
The annotator printing mechanism is somewhat position sensitive. If the recorder is to be mounted in a sloping
panel refer to the ‘Printing Adjustments’ section (6.4) for dot intensity adjustment.
The instrument is inserted through the panel cutout, from the front. It is then secured by using two DIN type
clamps as shown in Figure 2.2. These clamps can be fitted to the top, bottom or either side of the case, but
opposite sides should be used whenever possible.
It is sometimes helpful to centre-punch the rear face of the panel at the contact points for the clamps. This will
keep the clamps from “wandering” as they are tightened.
CAUTION
IT IS IMPORTANT NOT TO USE EXCESSIVE FORCE WHEN TIGHTENING THE CLAMPS. THE USE OF
FORCE GREATER THAN THAT WHICH IS NECESSARY TO SECURE THE CASE, MAY DEFORM IT, AND
PREVENT PROPER WITHDRAWAL OF THE RECORDER FROM ITS CASE.
To demount the recorder case, loosen the clamps and gently prise them from the case.
Figure 2.2 Case dimensions
137
mm
View on underside
17 mm
Maximum panel
thickness = 25 mm
137
mm
View on right hand side
375 mm (long terminal cover)
Case clamp
Panel cutout
138mm x 138 mm
(both 0.0 + 1.0 mm)
Min. inter-recorder
distance: 35 mm
Panel cutout details
144 m
m
Front view
345 mm (short terminal cover)
144 mm
