Installation; Three Wire Installation; Two Wire Installation; Wireless Installation - Wurlitzer 3020 Service Instructions And Parts Catalog

Service Instructions Sedion II
Installation
SECTION II
INSTALLATION
THREE WIRE INSTALLATION
1. Unlock and remove the cover of the wallbox.
2. Remove the program holder.
3. Unlatch and swing open the inside door.
4. Remove the 6 prong plug connecting the mner
door mechanism to the mounting base.
5. Lift the inner door assembly from the pin hinges
and lay it face down on the selector buttons (care-
fully).
6. Insert the grommet with the proper hole size to
accommodate the size wire wed. Two sizes of
grommets are supplied.
7. Mount the wallbox base to wall in a level posi-
tion, with suitabie sized mounting screws. Use
two top screws and one bottom. There are two
knockouts at points where wires may enter the
box. Ascertain which point is most desirable and
knock out a plug accordingly.
8. Extend cable from terminals 1, 2 and 3 on wall-
box to 1, 2 and 3, respectively, on stepper.
9. Two sets of terminals, or 'two circuits, are pro-
vided on stepper. Wire boxes in parallel. up to
five boxes on a single circuit, from the stepper.
10. No fuse or line cord is needed for three wire op-
eration. Power is supplied from the phonograph.
11. Test each wallbox for proper selection.
12. If more than 8 wallboxes are required in a lo-
cation, add a Model 222 Booster Transformer.
This will
handl~
an additional 4 wallboxes.
TWO WIRE INSTALLATION
Use Kit No. 43, Part No. 46285, to convert Model
3020 Wallbox for Two Wire Operation.
1. Mount base as described in Steps 1 thru 7 above.
2. Install suitable grommet, Part No. 45687 or 45682.
3. Install line cord, Part No. 46224, to terminals
marked line. The plug mwt be properly polarized.
If wallbox fails to operate reverse plug. Install
cable clips, Part No. 45253, to properly anchor line
cord.
4. Install 1 Amp Fuse, Part No. 29532.
5. Insert 11 Prong Plug, Part No. 46421.
6. Connect 2 wire
cab~e
from terminals 1 and 2 in
the wall box to terminals 1 and 2 on the stepper.
WIRELESS INSTALLATION
The Model 3020 W allbox is also wed for wireless
operation. All wallboxes and the phonograph mwt
operate from a ,common power supply and on the same
frequency. They are each plugged into a 60 cycle
outlet.
1. Requires a Model 215 Impulse Transmitter for
each wallbox.
2. Requires a Model 216 Impulse Receiver to
be
in·
stalled in the phonograph.
3. Install the Model 216 Impulse Receiver in the
phonograph . by plugging it into end of stepper
and securing the latches.
4. Mount the wallbox base as described in Three
W ire Installation, Steps 1 thru 7.
5. Install a 1 Amp. fuse and connect the line cord to
the terminals marked "Line," a fwe and cord is
furnished with each transmitter.
6. Remove the 11 prong plug located below the
coin selector mechanism.
7. Plug in the Model 215 Impulse Transmitter and
insert and secure the knurled thumb screw.
8. Check the frequency switch, located between the
tubes on the transmitter. It should be set to the
color corresponding to the crystal color. (Red)
TUNING OF MODEL 216 IMPULSE RECEIVER
1. Insert a 6U5 / 6G5 tuning eye tube in ,the 6U5
socket of the receiver.
2. . Select one of the wallboxes in· the system and
turn the main switch "On" to furnish power to
the transmitter.
3. Remove the wallbpx cover and open the inner
door.
4. Throw the tuning switch to "Tune" position.
(Up pasition) (See Figure 7.) The wallbox is
now transmitting a steady signal to the receiver.
5. Turn the sensitivity control on the receiver in
the phonograph; clockwise to ' its farthest point.
(Point 100)
6. Set the switch on the No. 1 transformer of the
receiver to the "N" position. (See Figure 8.)
7. Adjwt the fo- ur trimmers to cause the eye to
close.
8. Turn the sensitivity control 10, 15 or more points
on the dial in a counter-clockwise direction to
again open the eye.
9. Adjwt the four trimmers to again close the eye.
10. Continue backing-off on the sensitivity control
and adjusting the trimmers until the best peak-
ing is obtained. The farther counter-clockwise
the sensitivity control, the less sensitive the re·
ceiver will be to extraneous noises and interier·
ing- signals on the A. C. power line. (See Opera·
tipn of Model 216 Impulse Receiver, pages 3 and .
7.)
11. Set the switch on the No. 1 transformer to "B"
position.
Note
It is important to remember that merely getting the
tuning eye to close does not mean the receiver is tuned.
The receiver catJ be considered tuned only when the
eye is open 11ery slightly and further adj"stment of the
four .trimmers . will not cause it to close farther.
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