Wenger Maestro User manual

Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maestro Acoustical Shell Set Up . . . . . . . . . . . . . . . . . . . . . . . . . 4
General Information ...............................4
Ceiling Panel Performance Angles ...................5
Setting Ceiling Panel Storage Positions ...............6
Placing Ceiling Panels into Performance Position ........7
Changing the Ceiling Panel Performance Angle .........8
Tower Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Moving Towers from Storage ........................9
Tower Performance Position Set Up ..................12
Tower Wing Panel Doors ...........................14
Light Fixture Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Lieto LED Light Fixture Electrical Connection. . . . . . . . . . . . 17
Troubleshooting...................................17
Adjustment and Aiming ............................18
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
LED Ceiling Light Electrical Schematic ................19
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Towers .........................................20
Ceiling Panels ...................................20
Ceiling Lights ....................................20
Owner's Manual
Maestro
®
Acoustical Shell
©Wenger Corporation 2020 Printed in USA 2020-05 Part #201A500-05
Wenger Corporation, 555 Park Drive, P.O. Box 448, Owatonna, Minnesota 55060-0448
Questions? Call.....USA: (800) 4WENGER (493-6437) • Worldwide: [phone] • wengercorp.com
Contents
Note: Please read and understand these instructions before using or setting up.
Note: If you need additional information, contact Wenger Corporation using the information below.
Visit the Maestro Acoustical Shell web page at wengercorp.com for more information.

2
Important User Information
General
Copyright © 2020 by Wenger Corporation
All rights reserved. No part of the contents of this manual may be reproduced, copied, or transmitted in any form
or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information
storage and retrieval systems without the written permission of the publisher, unless it is for the purchaser's
personal use.
Printed and bound in the United States of America.
The information in this manual is subject to change without notice and does not represent a commitment on the
part of Wenger Corporation. Wenger Corporation does not assume any responsibility for any errors that may
appear in this manual.
In no event will Wenger Corporation be liable for technical or editorial omissions made herein, nor for direct,
indirect, special, incidental, or consequential damages resulting from the use or defect of this manual.
The information in this document is not intended to cover all possible conditions and situations that might occur.
The end user must exercise caution and common sense when assembling or installing Wenger Corporation
products. If any questions or problems arise, call Wenger Corporation at 1-800-887-7145.
Manufacturer
The Maestro®Acoustical Shell is manufactured by:
Wenger Corporation
555 Park Drive
Owatonna, MN 55060
(800) 4WENGER (493-6437) • [phone]
wengercorp.com
Intended Use
• The Maestro Acoustical Shell is intended for indoor use only and is not intended for outdoor use.
• Never expose the Maestro Acoustical Shell components to wind, humidity, or wet conditions.
• This product is intended to be assembled only as described in these instructions.
Installation
• The Maestro Acoustical Shell installation and use must comply with local regulations and codes.
• All personnel (including all temporary workers) installing or maintaining the Maestro Acoustical Shell
must read and understand these and other related installation instructions.
Warranty
This product is guaranteed free of defects in materials and workmanship for two full years from date
of shipment. A full warranty statement is available upon request.

3
Safety Precautions
Throughoutthisdocumentyoumayndcautionsandwarningswhicharedenedasfollows:
• WARNING: Failure to follow the instruction could result in serious injury or damage to property.
• CAUTION: Failure to follow the instruction could result in minor injury or damage to property.
Read all of these safety instructions before using the equipment.
Make sure that anyone
working with the Maestro
Acoustical Shell has read
and understands these
instructions.
Always observe and comply
with the Warnings and
Cautions posted on the system
equipment.
Failure to comply with
Warnings and Cautions in this
document can result in damage
to property or serious injury.
!WARNING !WARNING !WARNING

4
Maestro Acoustical Shell Set Up
Maestro
Tower
Maestro Towers
In Storage
Maestro
Ceiling
Panel
Proscenium Opening
Typical Maestro Acoustical Shell Plan View
Maestro
Tower
Maestro Ceiling Panel
In Storage Position
Proscenium
Opening
Typical Maestro Acoustical Shell Elevation View
Maestro Ceiling Panel
In Performance Position
General Information
The Maestro Acoustical Shell can be used for a variety of performance groups such as orchestra performance,
single performance recitals, etc. Tower and ceiling panel arrangements can be easily changed.
The number of towers and ceiling panels used, how they overlap, and the performance angles can be adjusted
fordi󰀨erente󰀨ects.Sometowershaveoneortwodoorsforeasystageaccess.
Refer to the Wenger drawings for the initial set up.
Never walk or stand on
suspended ceiling panels
or climb on towers.
Never climb on, mount or
hang other equipment from
a ceiling panel, rigging or
tower without consulting
Wenger customer service.
!WARNING
!WARNING

5
Maestro Acoustical Shell Set Up (continued)
General Information (continued)
• Towersarestoredinanestedpositiono󰀨-stagewiththewingpanelsfolded.
• Ceiling panel rows are rotated into the vertical position and stored in the loft area.
The sequence for setting up the Maestro Acoustical Shell is as follows.
1. Lowertheceilingpanelsrst.
a. Place the ceiling panels in a position where the panels can be rotated from the
storage position to the performance position, then, lift the ceiling panel rows
high enough to move towers across the stage.
Note: Timecanbesavediftowerpositionsaremarkedonthestageoor.
b. Move the towers with a wheeled mover to the performance position and open
the wing panels to the performance position.
c. If the ceiling panel rows have tapered ends, lower each row to a position slightly
below the top of the adjacent side towers.
Ceiling Panel Performance Angles
Ceilingpanelperformanceanglescanbeadjustedtoachievedi󰀨erentacoustice󰀨ects.
Refer to the illustrations below.
Performance angles that
are horizontal will return
more acoustic energy to the
performers on the stage.
Acoustic Source Acoustic Source Acoustic Source
Performance angles that are steeper will return more acoustic
energy toward the auditorium area.

6
Maestro Acoustical Shell Set Up (continued)
Setting Ceiling Panel Position
Ceiling panels are either stored in a vertical storage position or placed into a horizontal performance position.
Two or more people should work together to set ceiling panel positions.
• Performance Position — Pull the ceiling catch strap downward to disengage the ceiling panel catch plate
assembly from the ceiling panel edge extrusion.
The ceiling panel row is rotated until the ceiling stay strap is tight (performance angle) and is lifted to a
position above the stage.
• Storage Position — The ceiling panel row is rotated vertically until the ceiling panel edge extrusion is
engaged with the ceiling panel catch.
Ceiling Panel
Row
Ceiling Panel
Edge Extrusion
Ceiling Panel Catch
Plate Assembly
Hanger Arm
Ceiling Catch
Strap
Strap
Ceiling Panel
Engaged
Ceiling Panel
Disengaged

7
Maestro Acoustical Shell Set Up (continued)
Placing Ceiling Panels Into Performance Position
To move a ceiling panel row into the performance position, work from the downstage side to the upstage side.
1. Clear the stage of all people and objects that might interfere with
lowering the ceiling panels.
2. With two or more people working together, lower a ceiling panel
row until the upstage edge nearly touches, but does not touch
thestageoor(notlessthan6"[152mm]ofclearance).
3. Mark this position (Low Trim Position) on the hand line at the
lock rail.
4. Rotate the ceiling panels into the performance angle as shown on the previous page.
a. Pull the ceiling catch downward and release the panel from the
ceiling panel catch plate assembly.
b. Rotate the downstage edge of the panel row downward until the
ceiling stay strap is tight.
5. Clear the stage and lift the ceiling panel row to the performance position.
Make sure that the ceiling panel row does not swing while lifting it.
6. Repeat steps 1 through 5 for the other ceiling panel rows.
Always clear people and objects
from the stage when moving
ceiling panels to or from storage.
Do not allow a ceiling panel row
upstage edge to touch or strike
the stage oor.
Ceiling Panel Row
Upstage Edge
The Ceiling panel row is shown in the
storage position and lowered to low trim,
not less than 6" [152 mm] from the stage oor
Ceiling Panel Row
Downstage Edge
!CAUTION
!WARNING

8
Maestro Acoustical Shell Set Up (continued)
Changing the Ceiling Panel Performance Angle
1. Clear the stage of all people and objects that might interfere with lowering ceiling panels.
2. With two or more people working together, lower a ceiling panel row to the low trim position be sure
thattheupstageedgedoesnottouchthestageoorhasnotlessthan6"(152mm)ofclearanceto
thestageoor.
3. Rotate the ceiling panel into the current performance position.
a. Pull the ceiling catch downward and release the panel from the ceiling panel catch plate assembly.
b. Rotate the downstage edge of the panel row downward until the ceiling stay strap is tight.
4. To adjust the performance angle:
a. Remove the nut and bolt from the ceiling stay strap at the current performance angle.
b. Align the holes in the strap at the new performance angle and reattach the nut and bolt.
Note: if the performance angle is changed often, mark the positions on the ceiling stay strap.
5. Raise the ceiling panel row to the performance position.
Be sure the ceiling panel row does not swing while lifting it.
Always clear people and objects
from the stage when moving
ceiling panels to or from storage.
Do not allow a ceiling panel row
upstage edge to touch or strike
the stage oor.
Bolt
Align strap holes to set
the performance angle
Nut
Ceiling Stay
Strap
!CAUTION
!WARNING

9
Tower Set Up
Moving Towers From Storage
A separate manual wheeled mover is required to lift and move the towers.
1. To move the wheeled mover when not supporting a tower,
raise the handle to the upper hook.
Never use the wheeled mover for
any purpose other than to move
and position towers.
Never attempt to manually lift or
move a tower without using a
wheeled mover.
Lifting
Bracket
Lifting
Hook
Wheeled
Mover
Wheeled Mover
Upper
Hook
Lower
Hook
2. Position the wheeled mover under the
tower with the lifting hooks under the
lifting brackets on both sides of the tower.
!CAUTION !CAUTION

10
Tower Set Up (continued)
Moving Towers From Storage (continued)
3. Raise the lifting hooks under the lifting brackets by pushing the wheeled mover handle down and
under the lower hook.
The tower will tilt slightly backward.
4. Slowly move the tower at least 5' (1524 mm) out from the other towers.
5. Stop moving the tower and check to be sure that the wing panels are locked in the
storage position and that the wing doors are locked to the wing panels.
6. With one person at the wheeled mover,
one at the back side of the tower and
one to watch for obstructions, slowly move
(no faster than 1 foot [0.3 m] per second)
the tower to the performance position.
Be careful to not push the tower
into any obstructions on the stage
oororabovethestageoor
(such as ceiling panels, etc.).
Note: it is best to create permanent marks for the performance positions for all towers before
moving them from storage.
Never move a tower on an
inclined surface or ramp.
Always rotate and lock the tower wing panels
to the storage position before moving the
tower to or from the performance position.
Always clear people and objects from
the stage when moving a tower.
Always use at least three
people to move and position
the towers; one person at the
wheeled mover, one at the back
side of the tower and one to
watch for obstructions on and
above the stage.
Never move a tower faster than
1 foot (0.3 m) per second.
Handle under
lower hook
!CAUTION
!WARNING !WARNING
!CAUTION
!CAUTION

11
Tower Set Up (continued)
Moving Towers From Storage (continued)
7. Whenthetowerisinthenallocation,gripthehandleofthewheeledmoverrmlyandslowlymoveit
from the lower hook to the upper hook.
 Thetowerwilltiltslightlyforwarduntilitrestsontheoor.
8. Remove the wheeled mover from the tower.
9. Repeat these steps to move the remaining
towers to their performance locations.
Keep a rm grip on the wheeled mover
handle when raising or lowering towers.
Releasing the handle could cause the
tower to drop suddenly.
A dangerous pinch point develops
when lowering a tower to the oor.
!CAUTION !CAUTION

12
Tower Set Up (continued)
Tower Performance Position Set Up
1. Position the tower wing panels.
a. Turn the wing stay lock about one-half turn counterclockwise to release the wing panel.
b. Rotate the wing panel to the performance position.
c. Lock the wing panel by turning the wing stay lock clockwise until snug.
d. Position the opposite wing panel by repeating steps 1a through 1c.
e. Place the other towers and wing panel into the performance position.
f. If necessary, adjust the tower positions using a wheeled mover.
Wing Stay
Lock
Wing
Panel

13
Tower Set Up (continued)
Tower Performance Position Set Up (continued)
2. Towers should be level and adjacent wing panels should be even.
To level the towers:
a. Usea48"(1219mm)boxlevelorsimilartoolandcheckthelevelofeachtower.
b. Adjust the leveling pads by using a wrench to turn the adjustment nut as necessary.
Use a box level or similar tool
and make sure that the each
tower is level and that the
adjacent wing panels are even
Adjustment
Nut
Leveling
Pad

14
Tower Set Up (continued)
Tower Performance Position Set Up (continued)
3. Installthelowercenterllerpaneltothetower.
a. Liftthelowercenterllerpanelo󰀨ofthehookatthebackside
of the tower.
Lower Center
Filler Panel
b. Alignthellerpaneljustbelowthelowercenterpanel
from the front side of the tower.
c. Holdingthepanelhandles,placethelowerllerpanel
into position below the lower center panel.

15
Tower Set Up (continued)
Tower Performance Position Set Up (continued)
d. Lockthellerpaneltothelowercenterpanelwithonepersonholdingthellerpanelinplace
and a second person engaging the hook rods with the locking lever and closing the locking lever.
Hook
Rods
Panel
Latch Lever

16
Tower Set Up (continued)
Tower Wing Panel Doors
To open wing panels with a door:
1. Turn the slide lock knob counterclockwise to release the slide lock slide.
2. Pull the slide lock slide downward to clear the slide lock keeper and turn the slide lock knob clockwise
until it is snug.
3. Open the wing panel door.
Slide Lock
Knob
Slide Lock
Slide
Slide Lock
Keeper
Wing Panel
Doors

17
Branch circuits that supply power for ceiling panel
lights and other accessories must always be
designed by an electrical engineer and comply with
electrical codes and user requirements.
Replace any malfunctioning ceiling panel electrical
components only with components with the same
specication.
Do not alter the ceiling panel light
electrical circuits without consulting
the Wenger Corporation.
Always disconnect power to the ceiling panel
junction box prior to performing any work on
the electrical system or components.
!CAUTION
!WARNING
!WARNING
!WARNING
Light Fixture Operation
Lieto LED Light Fixture Electrical Connection
Ceiling panels with integral lighting utilize a tilt switch and a low amperage relay circuit to ensure that power is
unavailable to the lights when in the storage position. This prevents the lights from being turned on inadvertently.
These procedures detail basic operation of the Lieto™ LED Light Fixture.
For more information refer to the Lieto Light Fixture Owner’s Manual at wengercorp.com.
STOP
Do not connect or disconnect the LED
PowerCON connector under load.
!CAUTION
Lieto LED Light Fixture
Electrical Connection
Daisy Chain Multiple LED Lights
Row Mounted
Junction Box
LietoLieto Lieto
LEDLED LED
Light
Fixture
Light
Fixture
Light
Fixture
First
Light
Fixture
Light
Fixture
Terminator
Light
Fixture
PowerCON
In/Out
DMX
(RJ-45 or XLR)
First Light
Fixture
To next
light xture
in the row
From row mounted
junction box
with integral tilt switch
PowerCON
In/Out
From house lighting
control system
From house
electrical power
distribution
Troubleshooting
TheLietoLEDlightxturewilldefaultto“Full-On”whentheunithaspowerbutnocontrolsignal.

18
Light Fixture Operation (continued)
Adjustment and Aiming
To adjust the angle and orientation of the LED array, use the adjustment knobs located in the underside
ofthelightxture.
1. Loosen the adjustment knobs to change the LED array angle and orientation.
2. Use the knobs, to orient the LED array to the desired angle.
3. Tighten the adjustment knobs to secure the LED array in the new position.
Only tighten the adjustment knobs by hand.
Use of tooling could cause damage.
!CAUTION
Adjustment
Knobs

19
Schematics
Lieto LED Light Fixture Electrical Schematic (Maestro®Acoustical Ceiling)
LED's for manual
8.50
11.00
RELAY
JUNCTION BOX
NEUTRAL TERMINAL BLOCK
L NGL NGL NGL N G
TILT SWITCH
110/240
VAC
L NGL NGL NGL N G
LAMP 40 LAMP 30 LAMP 20 LAMP 10
LAMP 32 LAMP 22 LAMP 12
LAMP 2 LAMP 1
LAMP 31 LAMP 21 LAMP 11
CIRCUIT 4
CIRCUIT 3 CIRCUIT 2 CIRCUIT 1
RED
RED
HOUSE POWER SUPPLIED
IN FIELD BY OTHERS
L1 L2 L3 L4 N1 N2 N3 N4
CIRCUIT 1 CIRCUIT 2 CIRCUIT 3 CIRCUIT 4
See applications
documents for
coil voltage

20
Maintenance
Towers
1. Clean surfaces with a mild, non-abrasive detergent when soiled.
2. Be sure that all fasteners are tight.
3. Replace any damaged part immediately.
4. Lubricate any leveler parts that do not move freely with a general purpose grease.
5. Immediately replace any missing counterweights with Wenger Corporation replacement parts.
6. Be sure that all hinges move freely.
7. Replace any damaged rear frame casters.
Ceiling Panels
1. Clean surfaces with a mild, non-abrasive detergent when soiled.
2. Be sure that all fasteners are tight.
3. Inspectriggingbeforeyingorstoringceilingpanels.
4. Be sure that all hanger brackets turn freely on truss assemblies.
Replace parts as necessary.
5. Check ceiling panel performance angles and adjust when necessary.
Be sure that the ceiling panel ceiling stay levers work and move easily.
Ceiling Lights
1. Replace burned out lamps with those of the same wattage rating.
2. Be sure that all ceiling light power cord plugs are connected to grounded, twist-lock receptacles
in a locked position.
3. Be sure that all power cords are not frayed or under tension when the ceiling panels are deployed
or stored.
4. Be sure that the ceiling light tilt switch works correctly before the ceiling panel is moved
to a storage position.
5. Periodicallyremovedustanddebrisfromthesurfaceandlowerlightdi󰀨userforoptimalappearance
and performance.
Replace any malfunctioning ceiling
panel electrical components only
with components with the same
specication.
!WARNING
The light xture must be disconnected
from the site’s power supply before
any maintenance is performed.
!WARNING