Prior Scientific ProScan III Manual page 12

ProScan® III Manual
2. Loosen the 3 socket grub screws around the periphery of the focus adapter using a
2mm hex key until the focus sleeve is able to fit inside the adapter. Note that it is
important to insert the sleeve in the correct orientation with the lip furthest inside
the adapter (the chamfered edge of the sleeve will be inserted first). Note the
orientation of the sleeve as it has a recess around its outer surface, which will hold
the sleeve in when the setscrews are tightened. This recess must line up with the
tips of the socket set screws.
3. With the sleeve in place, tighten the 3 socket set screws in sequence until they all
just touch the sleeve, ensuring that the split in the sleeve does not line up with any
of the set screw positions. DO NOT TIGHTEN UP ANY OF THE
SETSCREWS AT THIS STAGE.
4. Push the adapter onto the preferred coarse knob of the microscope as far as it will
go.
5. The inside fitting diameter of the sleeve is designed to be slightly larger than the
coarse knob, provided the setscrews have not been tightened and are compressing
the sleeve.
6. While holding the adapter in place, tighten the set screws in sequence only enough
to secure the unit onto the coarse focus knob. The focus knob will have to be
rotated to gain access to all of the screws.
7. Check that the unit has been tightened sufficiently by taking hold of it and turning it.
If the adapter is correctly fitted it will stay attached to the coarse knob.
8. Slide the focus motor into the adapter as far as it will go and while applying gentle
pressure to the motor tighten the clamp screw. This will hold the motor in place.
The rubber drive bush on the end of the motor spindle should now be pressing
against the end surface of the fine focus control knob. This can be confirmed by
manually rotating the exposed fine focus knob on the opposite side of the
microscope and feeling for the resistance caused by the detent positions of the
stepper motor as it rotates. This will not cause any damage to the focus motor.
9. Confirm that the controller is switched off before connecting the 15 way D type
plug on the focus motor lead to the socket on the rear of the controller as shown
on page 10.
On power up the system auto detects the focus motor and the controller configures the
system to drive the focus motor in the correct direction when mounted to the right hand
side of an upright microscope. If the left hand coarse control knob is preferred by the user
or the focus drive is to be mounted on an inverted microscope, the motor direction can
be reversed either in the Interactive Control Centre settings menu or by using Prior
Terminal and changing the settings of the ZD command via RS232 or USB communication.
© Prior Scientific Instruments Ltd Version 1.12 June 2017 Page 10