P-97 FLAMING/BROWN MICROPIPETTE PULLER OPERATION MANUAL – REV. 2.43 - DOM (20161118)
7
Cover Plate
(Figure 1-4)
The cover plate conceals the entry of the Pulling Cables into the Base of the
instrument. It is attached to the top by two screws, in slots, at points labeled
C. Loosening these screws allows the Filament Block/Angle Plate assembly
to move forward and back over large distances.
NOTE: The movements of the Cover Plate and the Jaws constitute the ‘coarse adjustments’
of filament position, while the eccentric screws allow ‘fine adjustments’.
1.5.4
Upper Pulley Assembly
This assembly guides the Pulling Cables (T in Figure 1-5) from the Puller Bars (G in Figure
1-5) to the centrally located (and concealed) Lower Cable Pulley Assembly. Note that the
Upper Cable Pulley Assembly is attached to its panel by two screws, in slots (J’ in Figure
1-5), and contains a large eccentric adjustment screw (J in Figure 1-5). This eccentric screw
is used to adjust cable ‘tension’. Its use is covered in the Maintenance Section, and changes
to the settings should not be performed without the supervision of Sutter Instrument
Technical Support.
Figure 1-5. Upper cable pulley assembly.
Panels, Left
And Right
(K in Figure
1-5)
The panels are the angled surfaces that provide mountings for the Puller
Bars and their Bearings, the Spring Stops, the Bumpers, and the Upper
Cable Pulley Assemblies. Except for minor differences in shape, the left
and right Panels are mirror images of each other. Note the three socket-
head cap screws that attach each Panel to the base plate top. These screws
are used to align the Puller Bars. Their adjustment, if necessary, is covered
in the Maintenance Section. Contact Sutter Instrument Technical Support
for more instructions on how the panels are aligned.
Bumpers
(N in Figure
1-5)
The Bumper stops the motion of its associated Puller Bar. Each Bumper
also prevents impact forces from breaking pipettes.
Spring Stops
(P in Figure
1-5)
The Spring Stops are one-way catches that catch the Puller Bars as they
rebound off the Bumpers so as to prevent pipette tip collision.
Puller Bars
(G in Figure
1-5)
This assembly consists of the puller bar, threaded post, electrode clamp
knob, and cable retaining screw. The cable retaining screw (H) holds the
cable in a shallow groove (I) at the end of the puller bar, and forms the
‘resistance’ against which the cable ends pull. The puller bar is made of
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