b. Checking. Carefully inspect the equipment for possible damage
incurred during shipment. Pay particular attention to the rotating
polarizer. If no damage is apparent, install the spinner and operate
it as described in paragraph 49.1.
c. Installation. With the spinner oriented so that the power switch
and speed control face upwards, slip the mounting clamp over the pro-
jector lens housing. Rotate the mounting clamp so that the parting
line (fig. 23.2) faces the projector screen. Tighten the screw that
secures the parting line of the mounting clamp.
d. Connections. Connect the power cable plug into an ac conven-
ience outlet. If available, use the one on the projector.
a. Controls and Indicators (fig. 23.2).
Controls power application.
Top of spinner housing---
When lighted indicates power is
Right side of spinner
Varies speed of spinner.
Speed control ----
Top of spinner housing-.
- - do - - - - - - - - - - -
Marked in 30increments numbered
Scale - - - - - -
from 0 to 6; lines between num-
bers indicate 15 steps.
Pointer - - - - - - - - - - do - - - - - - - - - -
Used in conjunction with scale to
select reference point for empha-
sis during presentation.
Detent stop----- Top of mounting clamp ----- Locks spinner in line with pro-
jector lens. Prevents overswing
to prevent damage to controls.
b. Preliminary Instructions. Rotate the pointer manually to be
sure the spinner is not binding Be sure the projector is operating
properly, and that a polarized transparency or n transparency with
polarized patterns is inserted in the copyholding device of the
c. Normal Operation. With lie projector on, operate the spinner
as follows :
(1) Pivot the spinner housing so that the rotating polarizer is in
line with the projector lens. He sure the rollpin is set in the
Note. The detent stop on the mounting clamp limits the amount of
swing to prevent knocking the power and speed controls against the
(2) Press the power switch. Check to see that the power indica-
(3) Adjust the speed control for the rotational speed required
by the actual presentation.