NPZ TAL -2, Руководство по обслуживанию

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operates the indicator lights. The switch of autonomous operation on
the mounting and the key of supply unit must be set into “I” position
previously.
5.2. Telescope balancing
For smooth motion of the telescope and reliable operation of the
slow motion knob it is important to balance its movable parts on the
axes of the equatorial mounting.
For this purpose one should set the telescope tube in the horizontal
position, unscrew the bolt of brake 6 (fig. 5) of the declination axis and
holding slightly the tube by hand see to it whether it remains in the
indifferent equilibrium. If the tube is not in balance, undo the screws
of the clips which fix the tube and move the tube along its axis until it
will be in balance. After that one screw in the screws of the clips.
For balancing the telecope relative to the polar axis it is necessary
to set the declination axis in the horizontal position.Then it is necesary
to slacken each of three screws 2 through cap of the watch drive
(fig. 0). Holding the axis by hand see to it whether the telescope is in
balance about the polar axis. If the telescope is not in balance, move
counterweight 8(fig.5) along the declination axis. After balancing tighten
screws 2 of the friction clutch (fig. 0) on the polar axis so that the
telescope can not rotate easily.
The adjustment of the friction clutch is considered to be finished if the
telescope tube moves due to the minor effort of the hand.
When mounting the various devices on the telescope, for example,
a camera, it is required to balance the telescope additionally.
5.3. Precautionary measures
The rate of the fuse link mounted in the supply unit must be in
compliance with the rate denoted under the fuse link holder.
Mount the fuse link only after complete disconnection of the supply
unit from the mains.
Connect the bundled conductors to the watch drive and supply unit
when the supply unit is disconnected from the mains.
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