Grizzly T31850 User manual

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MODEL T31850
ADJUSTABLE
WORKBENCH LEGS
INSTRUCTIONS
Introduction
The Model T31850 Adjustable Workbench Legs
allows you to effortlessly raise and lower the
height of your workbench, desk, or table top elec-
tronically.
COPYRIGHT © OCTOBER, 2022 BY GRIZZLY INDUSTRIAL, INC.
NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
(FOR MODELS MFD. SINCE 11/20) #JM22350 PRINTED IN CHINA V1.10.22
***Keep for Future Reference***
Description Qty
A. Feet ............................................................ 2
B. Lifting Columns .......................................... 2
C. Cable Tray .................................................. 1
D. Support Beam ............................................ 1
E. Side Brackets ............................................. 2
F. Control Panel .............................................. 1
G. Power Cord ................................................. 1
H. Flat Head Cap Screws M6-1 x 12 .............. 4
I. Button Head Cap Screws M6-1 x 10 .......... 4
J. Button Head Cap Screws M6-1 x 16 .......... 8
K. Button Head Cap Screws M6-1 x 12 ........ 12
L. Tap Screws 4.2 x 19 ................................. 16
M. Hex Wrench 4mm ....................................... 1
Inventory
Figure 1. Model T31850 Adjustable Workbench
Legs.
Figure 2. Inventory.
A B C
DEF
GHIJ
KL
M
Max. Weight Capacity 275 lbs.
Height Range 22-7⁄8" - 48-3⁄8" 1⁄2
Width Range 43-3⁄8" - 74-7⁄8"
Specifications

-2- Model T31850 (Mfd. Since 11/20)
3. Attach feet to bottom of lifting columns with
(8) M6-1 x 16 button head cap screws (see
Figure 5).
4. Place table (not included) face down on floor,
then place workbench legs on table).
Figure 4. Attaching lifting columns.
x 8
Figure 5. Installing feet.
x 8
2. Insert lifting columns into ends of support
beams and secure with (8) M6-1 x 12 button
head cap screws (see Figure 4).
Needed for Setup
The following items are needed, but not included,
for the setup/assembly of the Model T31850.
Description Qty
• Additional Person ....................................... 1
• Safety Glasses (for each person) ..........1 Pr.
• Phillips Head Screwdriver #2 ..................... 1
• Tape Measure............................................. 1
• Shop Rags .................................. As Needed
Wear safety glasses during
the entire setup process!
To assemble workbench legs:
1. Attach side brackets to ends of support beam
with (4) M6-1 x 12 flat head cap screws (see
Figure 3).
Assembly
The Model T31850 Adjustable Workbench Legs
must be fully assembled, and a table must be
attached before the machine can be used. Before
beginning the assembly process, gather all listed
inventory items.
Figure 3. Attaching side brackets.
x 4
Side Bracket
(1 of 2)
DO NOT exceed table weight capacity of
275 lbs. Sudden change in dynamic load
at maximum weight capacity could cause
table to tip or collapse, resulting in serious
personal injury or property damage.

Model T31850 (Mfd. Since 11/20)-3-
8. Install control panel on right-hand side of
table (see Figure 8) with (2) 4.2 x 19 tap
screws.
Figure 7. Installing tabletop.
x12
Figure 8. Installing control panel.
9. Connect control panel cables to control box
as shown in Figure 9.
Do not extend workbench legs beyond
hole shown here or support beam could be
damaged.
Do Not Expand
Support Beam
Beyond This Hole
Figure 9. Installing cables.
HS M1 M2 DC
AC
Control
Panel
Connection
Power
Port
Lifting
Column
Connections
7. Center workbench legs on table (front-to-
back and side-to-side), then attach legs to
table with (12) 4.2 x 19 tap screws (see
Figure 7).
Note: We recommend drilling pilot holes in
the table to make installing these screws
easier.
Figure 6. Adjusting width of workbench legs.
AB
Control
Panel
x 2
5. Loosen (4) button head cap screws (see
Figure 6A) on support beam.
6. Adjust width of workbench legs to fit your
table (not included), as shown in Figure 6B,
then tighten screws to secure position.

-4- Model T31850 (Mfd. Since 11/20)
10. Measure overall width of workbench legs. If
overall width is less than 67
3⁄4", proceed to
Step 11. If overall width is greater than 67
3⁄4",
proceed to Step 13.
11. Install (2) M6-1 x 10 button head cap screws
on one side of rails, as shown in Figure 10.
Then position edge of cable tray under heads
of cap screws. Only hand-tighten for now.
12. Install (2) M6-1 x 10 button head cap screws
on opposite side of rails, as shown in Figure
10. Capture opposite edge of cable tray
under heads of cap screws, then tighten all
four screws.
13. Install (4) M6-1 x 12 button head cap screws
(see Figure 11) in support beam.
Figure 12. Control panel functions.
Down
Button
Memory
Set Button
Alarm
Button
Up
Button
LED
Display
Pre-Set Memory
Buttons
Using Control Panel
The model T31850 control panel (see Figure 12)
allows you to raise and lower the table, save up
to three table positions, and set an alarm as a
reminder to change your posture.
14. Perform Steps 11–12.
Figure 11. Installing cable tray when leg width is
greater than 67
3⁄4".
Cable Tray
x 4
Figure 10. Installing cable tray when leg width is
less than 67
3⁄4".
x 4
Cable Tray
Saving Table Positions
Three pre-set memory buttons can be used to
automatically move the table to saved positions.
Use the buttons to raise or lower the table to
the desired height. Press the M button. The LED
screen will display S-. Press the 1, 2, or 3 but-
ton to save the table position. The LED screen
will display S-1, S-2, or S-3, depending on which
memory button is chosen, to confirm the position
has been saved.
V
V
Using Alarm Function
The control panel can be programmed to set a
reminder/alarm to stand up from the table. Press
the A button to activate this function. The LED will
display "00". When the LED screen begins flash-
ing, press the buttons to adjust the reminder
time. The default time is set for 45 minutes. When
finished, press the A button to save the setting,
or wait 5 seconds and the time will automatically
be saved. When the countdown reaches zero, the
LED will flash "00", and a tone will sound for ten
seconds. To deactivate the alarm, press and hold
the A button for three seconds.
V
V
Raising and Lowering Table
Press the button to raise the table, and press
V
the button to lower the table.
V

Model T31850 (Mfd. Since 11/20)-5-
• Keep electrical connections clear of flam-
mable materials.
• Keep electrical connections dry. Do not
use in damp or wet conditions.
• Do not run cord under floor coverings or
where it may be tripped over.
• Not meant for outdoor use.
• Prevent unauthorized use by children or
untrained users.
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
Circuit Requirements for 110V
Nominal Voltage .................... 110V, 115V, 120V
Cycle ..........................................................60 Hz
Phase ........................................... Single-Phase
Power Supply Circuit ......................... 15 Amps
Plug/Receptacle ............................. NEMA 5-15
During height adjustments, if the table comes into
contact with another object, movement will auto-
matically cease. To adjust the level of sensitivity,
press the buttons at the same time. The LED
will display A-1 (low), A-2 (medium), and A-3
(high). Press the buttons to scroll through the
selections. After five seconds, the selection will be
automatically saved.
Setting Collision Sensitivity
V
V
V
V
Figure 13. Typical 5-15 plug and receptacle.
Grounding Pin
Neutral Hot
5-15 PLUG
GROUNDED
5-15 RECEPTACLE
Grounding & Plug Requirements
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!

-6- Model T31850 (Mfd. Since 11/20)
Symptom Possible Cause Possible Solution
No response from
the control panel.
1. Incorrect power supply voltage or circuit
size.
2. Power supply circuit breaker tripped or fuse
blown.
3. Incorrect cable connections.
4. Overwork/overheating.
5. Control panel at fault.
6. Control box at fault.
7. Motor at fault.
1. Ensure correct power supply voltage and circuit size
(see Page 5).
2. Ensure circuit is free of shorts. Reset circuit breaker
or reset fuse.
3. Make sure cables are connected properly.
4. Disconnect from power. Reconnect to power after 18
minutes and restart.
5. Replace control panel.
6. Replace control box.
7. Replace motor.
Slow rising/
declining speed.
1. Maximum table weight exceeded.
2. Table not positioned correctly/not level.
3. Extension cord too long.
4. Motor at fault.
1. Remove excess weight.
2. Check positioning of legs and table and level.
3. Move machine closer to power supply; use shorter
extension cord.
4. Replace motor.
Table will go up, but
not go down.
1. Table not positioned correctly/not level.
2. Incorrect cable connections.
1. Reposition and level table.
2. Make sure cables are connected properly (see
Page 3).
Table gradually
loses height.
1. Maximum table weight exceeded.
2. Fasteners loose.
1. Remove excess weight.
2. Tighten fasteners.
Range of height
movement limited.
1. Control panel not configured properly. 1. Press "M" and "3" together for at least three
seconds. Two continuous beeps will signal
restoration of factory settings.
Table has vibration
or noisy operation.
1. Motor or component loose.
2. Motor bearings at fault.
1. Replace damaged or missing bolts/nuts or tighten if
loose.
2. Test by rotating shaft. Rotational grinding/loose
shaft requires bearing replacement.
Display shows
"ASR".
1. Control panel needs resetting. 1. Press the down button until desk reaches it's lowest
point and rebounds to a stop. This means reset
has finished. If reset fails and display shows "E01"
or "E02" wait 18 minutes and retry the reset. If the
previous steps fail. Disconnect table from power
and reconnect. Press the down button to start the
reset process.
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather
the
serial number and manufacture date of your machine before calling.
Troubleshooting

Model T31850 (Mfd. Since 11/20)-7-
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Scan QR code to visit our Parts Store.
3
4
5
6
78
10
10
3
4
17
12
15
1
2
2
16
16
16
11
18
13
14
19
T31850 Parts Breakdown & List
Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here
are available for purchase. Call [phone] or visit our online parts store at www.grizzly.com to check for availability.
REF PART # DESCRIPTION REF PART # DESCRIPTION
1 PT31850001 PAD 11 PT31850011 PHLP HD SCR M5-.8 X 8
2 PT31850002 FOOT 12 PT31850012 FLAT HD CAP SCR M6-1 X 12
3 PT31850003 LI FTI NG COLUMN 13 PT31850013 BUTTON HD CAP SCR M6-1 X 10
4 PT31850004 SIDE BRACKET 14 PT31850014 BUTTON HD CAP SCR M6-1 X 16
5 PT31850005 SUPPORT BEAM 15 PT31850015 BUTTON HD CAP SCR M6-1 X 12
6 PT31850006 CABLE TRAY 16 PT31850016 TAP SCREW 4.2 X 19
7 PT31850007 CONTROL BOX 17 PT31850017 POWER CORD 18G 3W 122" 5-15P
8 PT31850008 HAND SWI TCH 18 PT31850018 HEX WRENCH 4MM
10 PT31850010 DAMPING PAD 19 PT31850019 DC MOTOR 24V