Wenger Signature Choral Riser 4-Step Installation and operating instructions

Assembly/Owner’s Manual
Signature
®
Choral Riser
4-Step Model
Note: Please read and understand these Assembly and Owner’s Instructions before assembling
the parts.
Note: Remove all items from the shipping cartons and arrange them in a convenient location.
Refer to the illustrations on the following pages. If you need additional information,
contact the Wenger Corporation using the information below.
CONTENTS
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . .3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Parts ist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Hardware Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Step Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Chassis Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Stringer Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Back Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Before Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Chassis Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Back Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Step Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Safety Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Moving and Storing Risers . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Connecting Multiple Riser Units . . . . . . . . . . . . . . . . . . . . . . .14
Straight Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
©Wenger Corporation 2014 Printed in USA 05/14 Part #098D499-04
Wenger Corporation, 555 Park Drive, P.O. Box 448, Owatonna, Minnesota 55060-0448
Questions? Call.....USA: 800-4WENGER (493-6437) • Worldwide: 1-507-455-4100 • www.wengercorp.com
Visit the Signature Choral Risers web page at www.wengercorp.com
for detailed instructions and videos.

2
SAFETY PRECAUTIONS
Make sure t at anyone
working on t e Signature
C oral Riser as read and
understands t is manual.
!CAUTION
Failure to comply wit
Warnings and Cautions in
t is document can result in
damage to property or
serious injury.
!CAUTION
Throughout this manual you will find cautions and warnings which are defined as follows.
• WARNING means that failure to follow the instruction may result in serious injury or death.
• CAUTI N means that failure to follow the instruction may result in serious injury or damage to
property.
Read all of the safety instructions before assembling or using the Signature Choral Riser.

3
IMPORTANT USER INFORMATION
GENERAL
Copyright © 2014 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 1-800-733-0393.
MANUFACTURER
The Signature®Choral Riser 4-Step Model is manufactured by:
Wenger Corporation
555 Park Drive
Owatonna, MN 55060
1-507-455-4100 • 1-800-733-0393
www.wengercorp.com
INTENDED USE
•This product is designed to be an elevation step for vocal groups.
•This product is intended for indoor use in normal ambient temperature and humidity conditions — it
must not be exposed to prolonged outside weather conditions.
•This product is intended to be assembled only as described in these instructions.
WARRANTY
This product is guaranteed free of defects in materials and workmanship for fifteen full years from
date of shipment. A full warranty statement is available upon request.

4
PARTS LIST
(2) Carriage Bolt, ZP,
3/8-16 x 1
(10) Nut, Lock,
NY.IN, Full,
ZP, 3/8-16
(4) Socket Screw, B HD, 3/8-16 x 2-3/4
HARDWARE PACK
(4) Carriage Sleeve,
SIG, ZP
Fasteners are shown actual size.
(6) Nut,
Jam Lock,
NY.IN, ZP, 3/8-16
(For Use n Back Rail nly)
A 9/16” Socket or Combination Wrenc is also required for assembly but is not supplied.
7/32" Hex Key Wrench
(supplied)

8
6
Item Qty Description Item Qty Description
1 1 1st Step 5 2 Unit Connector Bracket
2 1 2nd Step 6 2 Screw, SM, 1/4-20 x 1, Self Drill
3 1 3rd Step 7 2 Capscrew, GD2, ZP, 5/16-18 x 5/8
4 2 4th Step 8 16 Wing Nut, 3/8-16
1
2
3
5
7
5
PARTS LIST CONTINUED
STEP ASSEMBLY
CHASSIS ASSEMBLY 5
Item Qty Description Item Qty Description
1 1 4-Step Carriage 5 8 Carriage Bolt, ZP, 5/16-18 x 5/8
2 4 Caster 6 2 Nut, ock, NY.IN, Thin, ZP, 3/8-16
3 4 Carriage Bolt, ZP, 3/8-16 x 1 7 8 Nut, ock, NY.IN, Thin, ZP, 5/16-18
4 2 4-Step Back Rail ink
1
2
4
3
5
7
4
6

6
FASTENERS AND PARTS LIST CONTINUED
STRINGER ASSEMBLY
2
Item Qty Description Item Qty Description Item Qty Description
1 2 Stringer Assembly 4 6 Socket Screw, B HD, 3/8-16 x 3/4 7 8 Nylon Spacer, 0.913 x 0.635 x 0.641
2 2 Plug, 1-1/4 5 4 Bushing, 3/8-16
3 2 Back Rail Plate 6 4 Bearing Sleeve, 1/2” Dia
1
BACK RAIL ASSEMBLY
2
1
Item Qty Description Item Qty Description
1 2 Back Rail Upright Tube 3 2 Back Rail End Cap
2 3 Back Rail Horizontal Tube 4 6 Plug, 1-1/4 OD
3
4
3
4
5
6
7

7
Each riser is shipped in two cartons, one shorter carton containing the chassis and the hardware pack
and one longer carton containing the Back Rail and Steps.
Assembling a riser will likely involve kneeling. Use carpeting, a rug, or the cardboard carton to soften a
hard floor and prevent scratching riser surfaces.
Risers should be assembled indoors, in a well-lighted space with a level floor. Choose an area close to
the performance space. Make sure risers will fit through doors between the assembly area and the
performance space.
One person can assemble a riser, but two people will make the job easier.
ATTENTION!!!
The following assembly instructions are intended for the risers to be used in an Arc Configuration.
For use in a Straight Configuration, alternating riser sets must be assembled with the Steps and Back
Rail reversed. See “Straight Configuration” on page 15.
BEFORE ASSEMBLY
Arc Configuration
Straight Configuration
Set up and use t e riser only
on flat, solid surfaces.
!CAUTION

8
CHASSIS ASSEMBLY
1. Remove the Chassis Assembly, two Stringer Assemblies, and Hardware Pack from the carton.
Place the Chassis Assembly (wheels down) on the floor.
2. Rotate the ink Bars to the backside of the
Chassis Assembly.
3. Cut and remove the plastic shipping
bands and rotate the Truss and the
Truss Support to align with the
holes in the Chassis Assembly as shown.
4. Insert a 3/8” x 1” Carriage Bolt through
both of the aligned holes from the
underside of the Chassis Assembly
the Truss Support.
Secure both Carriage Bolts with a
3/8” ocking Nut.
5. Place both Stringer Assemblies on the threaded studs
of the Chassis Assembly.
6. Place a 5/8” x 3/4” Sleeve over each of the four threaded studs.
7. Secure the Stringer Assemblies and Sleeves using a
3/8” ocking Nut on each of the four threaded studs.
Tighten the ocking Nuts securely.
ASSEMBLY
Truss
Locking
Nut
Chassis
Assembly
Truss
Support
Carriage
Bolt
Align
Holes
Stringer
Assembly
Sleeve
Locking
Nut
Completed
Chassis Assembly
Rotate
Link Bar
Threaded
Stud

9
BACK RAIL ASSEMBLY
1. Remove the Upright Tubes, Horizontal Tubes and
Step Assemblies from the carton.
2. Using the 7/32” hex key wrench, remove the
three silver Screws from inside surface of
the first Back Rail Plate and set them aside.
Do not remove the black Screw.
3. Remove the two inner Nylon Spacers and
set them aside.
Do not remove the two outer Nylon Spacers.
4. Rotate the Back Rail Plate forward.
5. ift the ink Bar and slide it onto the non-bronze Sleeve.
With the End Cap side facing down, slide the two slots
of one Upright Tube onto the two pins fitted with the
bronze Sleeves until it contacts the Nylon Spacers.
Note: T e bronze Sleeves and Nylon Spacers
are loose. If t ey fall off or move out
of place, return t em to t eir original
position.
6. Replace the two inner Nylon Spacers
that were removed in Step #3.
Link Bar ver
Non-Bronze
Sleeve End
Cap
Upright
Tube
ASSEMBLY CONTINUED
Rotate Back
Rail Plate
Silver
Screws
Bronze
Sleeves
Inner Nylon
Spacers
Silver
Screw
uter Nylon
Spacers
Replace
Inner
Nylon
Spacers

10
BACK RAIL ASSEMBLY C NTINUED
7. Rotate the Back Rail Plate to the original position
and reinstall the three screws. Tighten them securely
using a 7/32” hex key wrench.
8. Repeat this procedure to attach the other Upright Tube
to the second Back Rail Plate.
9. Install the X-Brace onto the Upright Tubes by
sliding one 3/8” x 2-3/4” Screw through the hole
in each of the four corners of the X-Brace and into
the Upright Tube.
10. Secure each of the four
Screws with 3/8” ocking Nuts.
ASSEMBLY CONTINUED
X-Brace
Screw
Locking
Nut
Screw
Screw

11
BACK RAIL ASSEMBLY C NTINUED
11. ocate the three Horizontal Tubes.
Remove and discard the protective rubber
caps from the threaded studs.
12. Insert the threaded studs of the Horizontal Tubes
through the pre-drilled holes in the front side of
the Upright Tubes.
Secure them with six 3/8” Jam ock Nuts and
tighten securely.
ASSEMBLY CONTINUED
Jam
Lock
Nuts
Horizontal
Tubes
Completed Back Rail
and Chassis
Assembly
T e Back Rail Assembly must
remain attac ed at all times.
Removal can cause riser
instability and could result in
injury.
!WARNING

12
STEP ASSEMBLY
1. Remove the four Wing Nuts from each of the four Steps
and set them aside.
Note: Do not discard t e Wing Nuts, t ey will used
to attac t e Steps to t e Riser.
2. Start with the longest Step at the top and place the
Steps on the Stringer Assemblies in descending
order with the widest end at the rear as shown.
Fit the threaded studs in the proper holes in the
Stringer Assembly.
3. Secure the Steps using the Wing Nuts.
Turn the Wing Nuts as tight as possible
by hand (or gently using a pliers).
SAFETY CHECK
With the riser in the Performance Position,
check the fasteners for tightness:
a. Six ocking Nuts on the Chassis.
b. Ten Screws securing the Back Rail Upright Tubes.
c. Six ocking Nuts on the Back Rail Horizontal Tubes.
d. Sixteen plastic Wing Nuts (four under each Step).
ASSEMBLY CONTINUED
Wing
Nuts
Completed Step,
Back Rail and
Chassis Assembly

13
The Riser must be put into the Storage Position to be moved and stored.
To place the Riser in the Storage Position:
1. ift up on the First Step and fold it up to the Back Rail.
2. The Riser can now be moved and stored.
3. To place the Riser in the Set Up Position, lower the
First Step to the ground.
MOVING AND STORING RISERS
Set up and use t e riser only
on flat, solid surfaces.
!CAUTION
Riser in
Storage Position

14
Risers can be connected to additional units using the Unit Connector Brackets installed on the Steps.
To connect risers together:
1. Roll an additional riser to be aligned as close as possible with the riser already placed in the
Performance Position.
2. Unfold the riser into the Performance Position, setting the Rear Step onto the Rear Bracket of the
already placed riser.
3. ift the Front Step of the already placed riser over the Front Bracket of the additional riser.
4. If necessary, shift the positioning of the connected risers to fit tightly together.
CONNECTING MULTIPLE RISER UNITS
Front
Bracket
Rear
Bracket
Adjoining risers can separate
during use unless t ey are
connected using t e attac ed
Unit Connector Brackets.
!WARNING
Unused Unit Connector
Brackets can cause injury.
!CAUTION
Unused Unit
Connector
Bracket
Unused Unit
Connector
Bracket

15
The previous assembly instructions were for Arc Configurations.
To arrange risers in a Straight Configuration, every other riser in the configuration must have the
positioning of the Steps and the Back Rail Horizontal Tubes reversed.
1. With the riser in the Performance Position, remove
the four Wing Nuts from the underside of each Step.
2. Remove each Step and rotate 180 degrees. Reattach
the rotated Steps in reverse order with the longest
Step at the front and the shortest Step at the rear.
Reattach the Wing Nuts to the underside of each Step.
3. Remove the Back Rail Horizontal Tubes by removing
the ocking Nuts on the rear side of the Upright Tubes.
Reattach the Horizontal Tubes through the rear side of
the Upright Tubes and secure the ock Nuts from the
front side.
STRAIGHT CONFIGURATION
Rotate Steps 180 degrees
and reverse order from
longest to shortest.
Attach Horizontal Bars
to the rear side of the
Upright Tubes.

16
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