Therafin 31070 User manual

TOP DROP ATTACHING
CLAMP SYSTEM 31070
PARTS DESCRIPTION
PARTS LIST
Description Quantity
Base Unit . . . . . . . . . . . . . . . . . . . . . . . . 2
Step Collar . . . . . . . . . . . . . . . . . . . . . . . . 2
Handle . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Allen Wrench . . . . . . . . . . . . . . . . . . . . . . . 2
Washer, Black . . . . . . . . . . . . . . . . . . . . . . 2
Tension Washer, Silver . . . . . . . . . . . . . . . . . . 2
1-1/4" Button Head Cap Screw . . . . . . . . . . . . . . 2
1-3/4" Button Head Cap Screw . . . . . . . . . . . . . . 2
1/2" Flat Head Cap Screw . . . . . . . . . . . . . . . . 4
T-Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Lock Nut . . . . . . . . . . . . . . . . . . . . . . . . 2
ADJUSTING CLAMP TO ARMPAD THICKNESS
The Top Drop Attaching Clamp System can be adjusted to fit a
compressed armpad thickness from 5/8" to approximately 1-15/32".
The actual armpad thickness will be more, but the Top Drop Clamp
compresses the armpad in the “locked” position.
A clamping range from 5/8" to approximately 1" can achieved by
using the 1-1/4" Button Head Cap Screw to hold together the Base
Unit, Step Collar, and Handle.
A clamping range from 1-3/32" to approximately 1-15/32" can be
achieved by using the 1-3/4" Button Head Cap Screw to hold together
the Base Unit, Step Collar, Spacer, and Handle.
Each step in the Step Collar adds approximately 3/32" to the
clamp’s adjustment range.
Lock Nut Flat Head Screw
Base
Unit
Step
Collar
T-Nut
Black Washer
Tension Washer
Button Head Cap Screw
Spacer
Fully Nested Step Collar With Washer
Step Collar adjusted to first step
Step Collar adjusted to second step
Step Collar adjusted to third step
Fully Expanded Step Collar
adjusted to fourth step
5/8"
1-3/32"
23/32"
1-3/16"
13/16" 1-9/32"
1-15/32"
1"
29/32"
1-3/8"
PAGE 1 OF 2 - 08718
Mounting
Slot
Mounting
Hole

MOUNTING CLAMP TO TRAY, USING THE SLOTS
1. Rest tray atop clamps on
armrests. Mark where
back edges of clamps
make contact with tray.
2. Remove tray and flip
upside down on a flat
working surface. Position
clamps on tray, lining up
with marks. Using clamps
as a template, mark where
Slots in brackets make
contact with tray.
3. Remove clamps from
tray, drill one hole through
tray in approximate center
of each marked slot area.
Countersink holes on top
side of tray so Flat Head
Screws will be flush with
the tray surface.
4. Reposition clamps over
mounting holes. Insert
Flat Head Screws through
drilled mounting holes,
through clamp slots, and
into T-Nuts. Tighten with
allen wrench provided.
USING TRAY
Position the tray straight down onto armrests. With a quick half-turn of
the Handle, the tray is secured to the armrests.
(OPTIONAL) USING MOUNTING HOLES
Therafin’s optional Invisible Tray Attachment System (comes with
attaching hardware) may be used with Top Drop Clamps if you don’t
want to drill holes through the tray. You would use the countersunk
mounting holes on the Top Drop Clamps with the Invisible Tray
Attachment System.
You may also use the countersunk mounting holes if you choose to
rigidly mount the clamps to the tray. There will be no side-to-side
adjustment, and you must supply your own attaching hardware.
Unlocked
Position
Locked
Position
Unlocked
Position
Unlocked
Position
Locked
Position
Locked
Position
DETERMINE CORRECT STEP COLLAR
ADJUSTMENT FOR ARMPAD THICKNESS
1. Using the allen wrench provided, loosen Button Head Cap Screw
that holds together the Base Unit, Step Collar, and Handle.
2. With Handle in locked position, rotate Step Collar until estimated
adjustment for armpad thickness is determined. Note: Do not adjust
Step Collar to last (fifth) step! If more adjustment is needed to fit
thicker armpad, remove 1-1/4" Button Head Cap Screw. Place
Spacer between Handle and Step Collar, and use 1-3/4" Button
Head Cap Screw to hold pieces together. Using allen wrench,
tighten Cap Screw so all pieces fit firmly together, allowing Handle
to rotate.
3. Rotate Handle to unlocked position. Slide clamp assembly onto out-
side of armrest until Step Collar snugs up against armrest. Rotate
Handle to locked position to secure clamp assembly to armrest.
4. When fitted correctly, armpad will compress between Base Unit and
Handle, to hold entire assembly secure. If needed, remove clamp
assembly from armrest, re-adjust Step Collar for better fit.
PAGE 2 OF 2 - 08718
IMPORTANT: DO NOT USE LOCK TITE
ON POLYCARB TRAYS!

Image below shows installed device on Right
armrest
Step 1: Remove bolts from Pride TB3 Armrest Pad.
Step 2: Remove Pad. Place R1 under pad and reinstall bolts.
Repeat for other armrest. Tighten Bolts.
Quantum TB3 Tray Hardware Adapter
Therafin Corporation
9450 W Laraway Road
Frankfort, IL 60432 USA
800-843-7234
Caution: Read Instructions before operating device.
Caution: Device should be installed by a trained wheelchair
technician.
Product Identification
Caution: Use caution when installing, removing or adjusting
device to avoid pinching or trapping fingers.
Caution: Always tighten all fasteners securely and inspect
fasteners regularly for tightness.
.Page 1 OF 2 –08645 Revision B
L1
R1
R1
R1
Bolts
Installation and Assembly To Operate
Use with Therafin Top Drop Hardware.
R1
Therafin
Top Drop
Hardware

Quantum TB3 Tray HardwareAdapter
Therafin Corporation
9450 W Laraway Road
Frankfort, IL 60432 USA
800-843-7234
.Page 2 OF 2 –08645 Revision B
1. Wipe clean with damp cloth.
Care and Cleaning
Caution: Always tighten all fasteners securely and inspect
fasteners regularly for tightness.
2. Check all fasteners and retighten as needed.
Any product found to be defective due to the material
or workmanship within one year will be replaced
under our return policy following product evaluation
by Therafin Corporation. This replacement warranty
does not include misuse or neglect of the product.
Warranty