Copyright © 2002 Draper Inc. Form Envoy_Inst02 Printed in U.S.A.
Installation/Operating Instructions
Envoy Electric Projection Screen by Draper
Hanging Screen
General:
When locating viewing surface and checking clearance for screen’s operation,
remember surface is centered in case. Screen is normally recessed above
ceiling and may be installed in a variety of ways. See typical installation
detailed on back of this sheet. Regardless of mounting method used, the
following points apply:
➀Screen should be positively and securely supported so that vibration or
even abusive pulling on viewing surface will not weaken installation.
➁Installer must insure that fasteners used are of adequate strength and
suitable for the mounting surface chosen.
➂Entire bottom of case must be readily accessible after installation is
complete.
➃Hinge on bottom board and particularly hinge on automatic trap door of
screen must be permitted to operate freely. Front and back of case must
be straight—not forced to warp or bow. Hinges must be free from mastic or
paint buildup, and doors must be unobstructed by ceiling tiles.
➄Do not use screen case to support adjacent sections of ceiling.
➅If trim pieces must be attached to case, do not permit screws to protrude
through ¾" wall of case. Do not attach trim with nails.
➆If case is painted, slots around doors should be shielded to protect viewing
surface from paint splatters or overspray.
➇Do not seal unit in ceiling unit electrical connections have been made and
screen has been operated successfully.
Caution
➀Read instructions through completely before proceeding.
➁Follow instructions carefully. Installation contrary to instructions
invalidates warranty.
➂Entire bottom of screen case should be unobstructed to permit proper
operation of automatic trap door, and access to bottom panel for making
electrical connections or servicing.
➃Screen should be installed level (using a carpenter’s level).
➄Nothing should be fastened to screen dowel, viewing surface or
automatic trap door.
➅Operating switch(es) packed separately in screen carton. Do not discard
with packing material.
➆Screen operates on 110-120v, 60 hz. current.
NOTE: Screen has been thoroughly inspected and tested at factory and
found to be operating properly prior to shipment.
Electrical Connections
Screen operates on 110-120v, 60 hz. current.
Junction box is located just above bottom board near left end of screen.
Bottom board is held closed with flathead screws and may be opened with a
Phillips screwdriver. (Automatic trap door is held shut by viewing surface and
must not be forced open.) Removal of junction box cover plate exposes red,
black and white pigtail leads and green internal ground wire per wiring
diagram attached.
Screen is shipped with internal wiring complete and control switch(es) fully
boxed. Wire connecting screen to switch(es) and switch(es) to power supply
should be furnished by installer. Connections should be made in accordance
with attached wiring diagram, and wiring should comply with National and
local electrical codes.
All operating switches should be “off” before power is connected.
Operation
When screen is first operated, be cautious! If automatic trap door does not
drop open immediately when switch is flipped “down”, return switch to “off”
and free trap door and/or recheck electrical connections before proceeding.
Cycle unit down and up several times to confirm satisfactory operation.
110-120v Single Station Control —
3-position up-off-down switch permits
operation to be stopped at any point. Factory adjusted limit switches
automatically stop screen when fully down or fully up.
110-120v Multiple Station Control
—Switches are similar in appearance to
110-120v Single Station Control. Screen stops when switch is released and
may be restarted in either direction. Factory adjusted limit switches stop
screen automatically when fully up or fully down.
24v Control —
Three-button up-stop-down switches stop at any point
desired, operate in any sequence. Factory adjusted limit switches
automatically stop screen when fully up or fully down.
Key Operated Switching —
Two kinds of key-operated switches are
optionally available with this unit. ➀The key-operated power supply switch
controls power to the screen and switches. When it is “off”, the switches will
not operate screen. Key may be removed from the switch in either “on” or “off”
position. ➁A three-position key switch permits the screen to be operated
directly by key. In this case, the screen’s operator must always have a key.
Adjustments
Screen has been factory set and should not normally require further
adjustment. However, if you desire to change the “up” and “down” stopping
positions, proceed as follows:
CAUTION: Be sure all switches are in “off” position before adjusting limit
switches. Always be prepared to shut screen off manually when new
adjustment is being tested. Screen may be severely damaged if viewing
surface is allowed to run too far up or too far down.
Adjusting “fully up” position —
“Up” limit switch, located immediately
above left end of automatic trap door, is tripped as door closes. If door does
not close fully, limit switch should be raised slightly. If door closes too tightly,
switch should be lowered slightly.
Remove steel plate attached to threaded neck of “up” limit switch by removing
hex nut securing it. Removing plate exposes three Phillips head machine
screws which hold limit switch bracket in place. Turning these screws
clockwise will raise limit switch; turning them counterclockwise will lower it.
Raise switch only in quarter-turn increments. When operating properly
automatic trap door should close gently and rest against but not press on
rubber bumpers above it. Adjusting automatic door so that it closes too tightly
will damage screen.
Adjusting “fully down” position —
“Down” stopping position may be
adjusted by turning the white limit switch adjustment socket. The white socket
is located on the left end of screen roller and is accessible to a screwdriver/
Allen wrench (4mm or
5
/
32
") when automatic trap door is open. Access is
easier when bottom board is also open. (Do not adjust the yellow socket
which is next to and in back of the white socket). Turning the white socket
counterclockwise will allow viewing surface to run farther down. Turning it
clockwise will shorten the viewing surface, stopping it in a less extended
position. At no time should viewing surface be unrolled enough to expose any
part of screen roller.
1
1
/
4
"
1
1
/
4
"
2
1
/
4
"
5
/
8
"
2"
2"
Ceiling tile and grid
(by others)
7
9
/
16
"
