GrowSpan Twist-of-the-Wrist User manual

1
CLEARSPAN™CURTAIN ACCESSORIES
Revision date: 10.23.08
©2019 GrowSpan™
All Rights Reserved. Reproduction
is prohibited without permission.
STK# DESCRIPTION
102724 8' Aluminum Rail
106428 16' Aluminum Rail
Twist-of-the-Wrist
Assembly Instructions
Flat-Wall for Curtain Application
Curved-Wall for Roll-Up Side

CLEARSPAN™CURTAIN ACCESSORIES
2Revision date: 10.23.08
ITEMIZED PARTS AND DESCRIPTIONS
102724 8' ALUMINUM RAIL & MOUNTING HARDWARE
Item Description Qty.
AR5010 Chain Section 1
FALF15B Locknut (1/4"-20) 3
FAG106B Hex Cap (1/4" x 1-1/2" Zinc) 1
AS2200 Quick Link (1/8" Zinc Plated) 1
FA2087 Eyebolt (3/8" x 8" Zinc) 1
FALB04B Nut (3/8"-16 Zinc) 2
FAME08B Flat Washer (3/8" Zinc) 2
FA2160 Eye Screw (5/16" x 4" Zinc) 1
FAG108B Hex Cap (1/4" x 1/2" Zinc) 2
102570 8' Aluminum Channel 1
106428 16' ALUMINUM RAIL & MOUNTING HARDWARE
Item Description Qty.
AR5010 Chain Section 1
FALF15B Locknut (1/4"-20) 3
FAG106B Hex Cap (1/4" x 1-1/2" Zinc) 1
AS2200 Quick Link (1/8" Zinc Plated) 1
FA2087 Eyebolt (3/8 x 8 Zinc) 1
FALB04B Nut (3/8-16 Zinc) 2
FAME08B Flat Washer (3/8" Zinc) 2
FA2160 Eye Screw (5/16" x 4" Zinc) 1
FAG108B Hex Cap (1/4" x 1/2" Zinc) 2
106427 16' Aluminum Channel 1
General Information and Overview
In addition to other uses, the Twist-of-the-Wrist assembly
allows the operator to "roll up" a window curtain, the side of
a cover (shown above) or the end panel door of a shelter.
The assembly can also raise and lower curtains of different
lengths. These instructions describe the basic Twist-of-the-
Wrist components and how to assemble those components.
IMPORTANT!
Additional purchase is required for many Twist-of-the-Wrist
components shown on the following pages. Contact your
sales representative if you have any questions regarding
the purchase of parts, or the parts contained in any Twist-
of-the-Wrist hardware kit or curtain kit you may have
ordered.
These steps provide general information to help with the
installation of the Twist-of-the-Wrist components. Review
these instructions and skip the sections that do not apply.
Gearbox
Bearing Assembly
Adaptor and Drive Shaft
Mounting Plate
Additional Twist-of-the-Wrist Components
(Additional purchase is required.)
Example above shows curtain
mounted to a flat wall. Photo
to the right shows roll-up side
panel on a curved wall.

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CLEARSPAN™CURTAIN ACCESSORIES
Revision date: 10.23.08
GENERAL INFORMATION AND OVERVIEW FOR
ATTACHING A WINDOW CURTAIN TO A FLAT SURFACE
(May not apply to all applications.)
NOTE: Depending on the application, some hardware
included with hardware kit (if purchased) may not be needed.
Photos show some components that require an additional
purchase.
Gather the parts:
• Aluminum channel
• Curtain (additional purchase or customer-supplied)
• Fasteners (additional purchase or customer-supplied)
• Conduit (additional purchase or customer supplied)
This procedure describes an overview of the flat-wall window
curtain installation. Refer to the remaining instructions for
further details and the curved-wall example.
Different applications require different installation procedures.
It is the customer's responsibility to determine the best way
to install a curtain. Operation of Twist-of-the-Wrist assembly
(additional purchase required) is the same regardless of the
application.
Complete these steps if applicable:
1. After assembling the conduit, attach the top of the curtain
to the building using customer-supplied fasteners. (See
Pages 4-5 for specific procedures.)
2. Attach assembled conduit to the bottom of the curtain
using customer-supplied fabric clips or Tek screws. (See
Page 5 for additional details.)
3. Attach the aluminum channel to the flat wall using
customer-supplied fasteners, or bolts included with the
hardware kit (if purchased).
Diagrams A & B (flat wall-wood): Using wood screws
and spacers, attach the top and lower end of the
aluminum channel to the wall. Predrill fastener holes in
the aluminum track if needed. Use additional fasteners as
needed.
Place a spacer under each fastener and between the
channel and the building to allow the Twist-of-the-Wrist
gearbox to freely move up and down the channel. A
continuous spacer as long as the track can also be used.
Minimum spacer thickness is 1/4".
4. Continue with the Twist-of-the-Wrist Assembly procedure
that follows in these instructions.
Wood Screw
Spacer
Building Wall
Aluminum
Channel
A
A
B
B

CLEARSPAN™CURTAIN ACCESSORIES
4Revision date: 10.23.08
ASSEMBLE THE ROLL-UP CONDUIT
The roll-up conduit runs the length of the curtain or cover
and serves as the center pipe that the curtain or cover
wraps around when opened. Skip this section if it does not
apply to your application.
Gather the parts:
• Pipe and Tek screws (additional purchase or customer-
supplied)
Complete these steps to assemble the roll-up conduit:
1. Locate all sections of pipe.
2. Insert the swaged end of one pipe into the plain end of
another pipe until the conduit is assembled.
NOTE: For easier handling, assemble longer conduits
(40' and longer) in short sections.
3. Secure each pipe joint using a Tek screw.
4. Place the assembled conduit at the base of the shelter
or frame where the curtain is located or will be installed.
TWIST-OF-THE-WRIST: GENERAL INSTRUCTIONS
The instructions below describe how to assemble and
install a single Twist-of-the-Wrist assembly. The procedure
is repeated for additional assemblies (if applicable). A
curtain is used in the example. These steps can be easily
adapted to other applications such as a main cover or end
panel. (The purchase of additional parts may be required.)
The basic procedures to assemble and install the Twist-of-
the-Wrist include the following:
1. Assemble the roll-up conduit. (Additional purchase may
be required.)
2. Attach the curtain to the shelter or building frame (if
applicable).
3. Attach the roll-up conduit to the curtain or panel.
4. Assemble and attach the Twist-of-the-Wrist.
5. Install the Anti-Billow Rope system. (Additional
purchase is required.)
6. Test the operation of the Twist-of-the-Wrist.
5. Continue with the procedure that follows to attach the
curtain to the shelter or frame.
ATTACH CURTAIN (May not apply to all applications.)
Gather the parts:
• Curtain (additional purchase or customer-supplied)
• Tek Screws and washers (additional purchase)
This procedure describes loosening the main cover of a
building similar to what is shown and attaching a curtain
under the edge of the main cover. The main cover is then
reattached over the top edge of the roll-up curtain to allow
for proper water drainage.
Different applications require different installation
procedures. It is the customer's responsibility to determine
the best way to install a curtain. For some buildings, a
portion of the main cover can be used for the roll-up side.
Complete these steps if applicable:
1. After assembling the conduit, take the curtain and
unfold it on a clean, smooth surface near the frame.
2. Loosen the edge of the main cover if needed and
attach the top of curtain to the frame using Tek screws
and Fender washers. Evenly space the Tek screws
every 12" for best results as shown below.
NOTE: If frame is wood, use wood screws.
3. Position the main cover over the top edge of the curtain
and secure as needed.
Tek screw
12"
Curtain
Main Cover
End Panel
of building
Rafter
NOTE: Tape over
the Tek screws and
joints using heavy
duct tape (supplied by
customer) to prevent
curtain wear.
Roll-Up Conduit Pocket
Shelter shown may
be a different model.
Drawing used for
illustration only.

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CLEARSPAN™CURTAIN ACCESSORIES
Revision date: 10.23.08
ATTACH CONDUIT TO CURTAIN OR COVER PANEL
To this point, the top edge of the curtain is secured to the
frame; the remainder of the curtain will hang down along
the side of the building or frame.
Gather the parts: Assembled conduit, Fabric clips, and Tek
screws (additional purchase or customer-supplied).
1. Unfold the lower portion of the curtain or cover (if
needed) and evenly stretch it out along the frame.
2. Slide the assembled roll-up conduit into the pocket of
the curtain if a pocket exists.
NOTE: If using film for cover, wrap the lower edge of
the film around the roll-up conduit. You may secure with
a few pieces of duct tape. Some kits provide clips used
to secure the panel to the roll-up conduit. (Additional
purchase required.) See Step 18 of the next procedure.
IMPORTANT: Insert the conduit into the pocket so the
plain (non-tapered) end of the conduit is at the end of
the shelter where the gearbox will be installed. Allow
the excess conduit length to extend beyond the curtain
or panel at both ends with most at the end where the
Twist-of-the-Wrist assembly will be positioned. The
conduit is trimmed to length after the gearbox assembly
is installed.
3. Continue with the Twist-of-the-Wrist Assembly
procedure.
TWIST-OF-THE-WRIST ASSEMBLY
Gather the parts:
• Aluminum channel
• Gearbox and gearbox drive
• Mounting plate and roller bearing
• 3/8" eyebolt or 5/16" eye screw (depending on the
shelter and frame material)
• 3/8" nuts and washers
Shelter shown may
be a different model.
Drawing used for
illustration only.
Curtain or
main cover
Roll-Up Conduit
The photo above shows the Twist-of-the-Wrist assembly as
attached to a greenhouse. Photo is for illustration purposes only.
Actual building and application will vary.
ATTENTION: These
procedures describe
the basic steps needed
to assemble and attach
the Twist-of-the-Wrist
assembly. Additional
modifications and
components (purchased
locally) may be required
if none of the following
suggestions work for your
application.
The customer and those
installing this assembly
are responsible for
determining the best way
to install the curtain and all
related components.
Chain Link Installation (if applicable)
The following procedure describes using the supplied chain
and eyebolt (or eye screw) to attach the upper end of the
aluminum channel to the building or frame.
1. Drill a 5/16" hole through the roll-up conduit 1/2" from
the end of the conduit.
2. Insert a tubing adapter (from the drive set) into the
conduit and align the holes of the adapter with the
drilled holes in the conduit.
3. Select the aluminum channel and drill a 5/16" hole
through the center of the channel approximately 1"
from the end. (See the diagrams below.)
The Twist-of-the-Wrist assembly is designed to raise and
lower the curtain or a portion of the main cover. These
steps describe the Twist-of-the-Wrist assembly and its
installation.
1"
Curtain is not
shown in the
diagram. Slide
the curtain out of
the way if needed
when drilling the
mounting hole in
the conduit.
Tubing
Adapter

CLEARSPAN™CURTAIN ACCESSORIES
6Revision date: 10.23.08
4. Insert the 1/4" x 1-1/2" bolt through the channel, a
link of the chain, and out through the other side of the
channel.
7. Attach the chain to the fastener (previous step) using
the AS2200 quick link. The channel will hang down
from the fastener and chain.
8. Select the bearing bracket and attach the bearings
as needed. (If the bearing component is assembled,
continue with Step 9.) Assemble as follows if needed
Attach to frame
using an eyebolt or
eye screw and the
AS2200 quick link.
1"
NOTE: Verify that
the lower end of the
channel is slightly off
the ground to allow it
to move freely when
the curtain or panel is
raised and lowered.
Adjust the height
of the channel by
repositioning the
mounting eyebolt
or eye screw on the
frame, or by inserting
the quick link through
a different position on
the chain.
1/4" x 1-1/2"
Bolt
TWIST-OF-THE-WRIST ASSEMBLY (CONTINUED)
5. Secure the bolt to the channel using a 1/4" locknut.
Chain should slide freely on the 1/4" bolt.
6. Determine the desired height of the channel and install
the eyebolt (for metal) or eye screw (for wood).
5/16" nut used
as spacer
5/16" Nut
Single bearings are attached to the sides of the bracket
and double bearings to the middle portion of the
bracket. Use 1/4" hex bolts and locknuts as needed.
Install a flat washer on both sides of each bearing to
insure proper operation of bearings and the assembly.
Install the longer bolts with bearings on the side
of the bracket that has the two holes. Install these
before installing the double bearing assembles. For
the spacers on the long bolts, insert a 5/16" nut over
each bolt. These nuts are used as spacers only. See
previous diagram for details.
9. Slide the Twist-of-the-Wrist mounting plate over the
long bolts and secure the plate with two locknuts.
10. Attach the Twist-of-the-Wrist gearbox to the mounting
plate using hex head bolts included with the plate.
11. Using a 1/4" x 2" bolt and 1/4" locknut, attach the
square shaft to a tubing adapter.
Lock Nuts
NOTE: The number of
bolts used to secure
the gearbox to the
mounting plate may
differ from what is
shown in the diagram.
NOTE: Photo shows
a different bolt and
nut. Secure as
instructed using the
1/4" nut and bolt.

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CLEARSPAN™CURTAIN ACCESSORIES
Revision date: 10.23.08
TWIST-OF-THE-WRIST ASSEMBLY (CONTINUED)
12. Slide the square shaft through the Twist-of-the-Wrist
gearbox.
13. Slide the Twist-of-the-Wrist assembly onto the
aluminum channel from the ground end. (This is the
free end of the channel.)
19. Attach the crank handle to the Twist-of-the-Wrist
assembly. (Curtain is not shown in the diagram below.)
14. Align the roll-up conduit with the gearbox and trim roll-
up conduit to length as needed.
15. Check clearance between channel and the structure
that the channel is attached to. Adjust if needed.
16. Attach the roll-up conduit to the square shaft of the
assembly by inserting a 1/4" x 2" bolt through the hole
in the conduit and tubing adapter. Tighten the locknut.
17. Straighten the curtain and center it along the shelter or
building side as needed.
20. Test the operation of the Twist-of-the-Wrist assembly.
Drawing may show a different but similar application;
the same operation technique is used.
Crank Handle Crank Handle sold
separately.
Roll-up conduit is
not shown in the
diagram.
NOTE: If the curtain rolls in the desired direction, but
you want to turn the crank in the opposite direction for
the same result, unbolt, reposition the gearbox, and
remount it on the same side of the mounting bracket.
Verify that the curtain rolls in a direction that allows
water to drain off of it as shown in the example above.
21. Continue by installing the anti-billow rope.
Fabric Clips
All parts are not shown
in this diagram.
Trim roll-up conduit to
length as needed.
18. Use Tek screws and fabric clips (customer-supplied) to
secure the curtain to the conduit. Space the fabric clips
evenly along the conduit for best results. May not apply
to all applications. Additional purchase necessary.

CLEARSPAN™CURTAIN ACCESSORIES
8Revision date: 10.23.08
INSTALL ANTI-BILLOW ROPES (ADDITIONAL
PURCHASE REQUIRED)
Gather the parts:
• Anti-billow rope
• Tek screws or wood screws
• Fender washers
Anti-billow ropes secure the roll-up curtain when it is in the
down position. The procedure that follows describes using
Tek screws (or wood screws) and Fender washers to wrap
the rope around. The screws are installed into the frame or
pony wall.
If this type of installation does not work for the application,
additional parts may be required and must be supplied by
the customer.
Complete the following steps to install the anti-billow ropes.
1. Using the Twist-of-the-Wrist assembly, roll up the
curtain or cover panel a few inches above the ground.
2. Install the first screw and Fender washer into the
building frame at the base of the end rafter where the
Twist-of-the-Wrist assembly is located.
3. Move up the same end rafter or frame support and
install another screw and washer.
NOTE: Do not fully tighten the screw and washer
against the frame or rafter. Allow space for the anti-
billow rope to remain between the washer and the
frame that the screw is attached to.
The diagram above shows the screw locations on a
building where the anti-billow rope will be installed.
4. Attach the remaining screws and washers using the
diagram below as a suggested guide.
NOTE: For the best results, the maximum distance
between the screws must not exceed 12'.
5. Once all screws with washers are installed, grasp the
end of the anti-billow rope and tie it to one of the upper
screws at either end of the building or frame. See the
pattern and arrows above.
6. Weave the rope between each screw and washer as
shown and work to the other end. Temporarily hold or
tie the rope to keep it in place.
7. Using the Twist-of-the-Wrist assembly, roll up the
curtain or cover panel up to its highest position.
8. Move to the end of the frame where the rope has been
temporarily secured and pull the anti-billow rope tight to
remove excess slack.
9. Tie the rope to the screw to complete the weaving of
the anti-billow rope and cut it to length.
10. Lower the curtain to check the operation.
11. Repeat all of the above procedures to install any
additional curtain packages.
12'
Tie end
of rope
here to
begin rope
installation.
Building shown may differ
from actual building.

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CLEARSPAN™CURTAIN ACCESSORIES
Revision date: 10.23.08
Space below is reserved for customer notes.