Promotech LIZARD User manual

ul. Elewatorska 23/1, 15-620 Białystok, Poland
Phone: [phone], Fax: [phone]
www.promotech.eu e-mail: [e-mail]
OPERATOR’S MANUAL
L
LI IZ ZA AR RD D
WELDING CARRIAGE

Contents
1. GENERAL INFORMATION............................................................................................... 3
1.1. Application................................................................................................................. 3
1.2. Technical data............................................................................................................ 3
1.3. Design ....................................................................................................................... 5
1.4. Equipment included ................................................................................................... 6
2. SAFETY PRECAUTIONS.................................................................................................. 7
3. STARTUP AND OPERATION........................................................................................... 9
3.1. Preparing................................................................................................................... 9
3.2. Connecting to welding circuits...................................................................................10
3.3. Positioning at the worksite ........................................................................................11
3.4. Starting .....................................................................................................................12
3.5. Programming ............................................................................................................12
3.6. Welding procedure....................................................................................................14
3.7. Operating..................................................................................................................15
3.8. Using oscillator (accessory) ......................................................................................16
3.8.1. Installing..........................................................................................................16
3.8.2. Welding with oscillation...................................................................................17
3.8.3. Operating........................................................................................................18
3.9. Troubleshooting........................................................................................................19
4. MAINTENANCE...............................................................................................................20
5. ACCESSORIES...............................................................................................................21
5.1. Oscillator...................................................................................................................21
5.2. 16–22 mm torch clamp..............................................................................................23
5.3. 16–22 mm torch clip..................................................................................................23
5.4. 22–35 mm torch clamp..............................................................................................23
5.5. Short rod...................................................................................................................24
5.6. Long rod....................................................................................................................24
5.7. Short rod torch holder with clamp..............................................................................24
5.8. Short rod torch holder with clip..................................................................................25
5.9. Short rod low torch holder with clip............................................................................25
5.10. Long rod torch holder with clamp ............................................................................25
5.11. Long rod torch holder with clip.................................................................................26
5.12. Torch extension arm ...............................................................................................26
5.13. Edge following guide arms......................................................................................27
5.14. Adjustable guide arms.............................................................................................28
5.15. Magnet guide arms .................................................................................................29
5.16. Dual torch mount.....................................................................................................32
5.17. Guiding set..............................................................................................................33
5.18. Guide adjustment tool .............................................................................................35
5.19. 76 mm cross slide...................................................................................................36
6. WIRING DIAGRAM..........................................................................................................37
7. DECLARATION OF CONFORMITY.................................................................................38
8. QUALITY CERTIFICATE..................................................................................................39
9. WARRANTY CARD..........................................................................................................40

LIZARD
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3
1. GENERAL INFORMATION
1.1. Application
The LIZARD is a welding carriage designed to produce continuous or intermittent butt
and fillet welds using MIG/MAG torches with the handle diameter of 16–22 mm (0.63–
0.87’’). The carriage is fixed by permanent magnets and can work in the following
welding positions: PA/1F/1G, PB/2F, PC/2G, PD/4F, and PE/4G.
Accessories allow, for instance, welding with oscillation, using torches with the
handle diameter larger than 22 mm, two torches simultaneously, guiding the carriage
along outside edges, lap joints and templates, walls low or with holes, and on ceilings,
pipes, and tanks.
1.2. Technical data
Voltage
1~ 115–230 V, 50–60 Hz
Power
25 W
Welding position (according to
EN ISO 6947 and AWS/ASME)
horizontal
PA / 1F / 1G
PB / 2F
PC / 2G
PD / 4F
PE / 4G
vertical
PF / 3F / 3G (with optional oscillator)
PG / 3F / 3G (with optional oscillator)
Minimum path curvature radius
1500 mm (5 ft)
Torch type
MIG/MAG
Torch diameter
16–22 mm (0.63–0.87’’)
Maximum torch reach
80 mm (3.15’’)
Maximum permitted cable weight
horizontal work
12 kg (27 lbs)
vertical work
8 kg (18 lbs)
Minimum workpiece thickness
5 mm (0.20’’)
Ground clearance
5 mm (0.20’’)
Horizontal pulling force
220 N
Vertical pulling force
150 N
Cross slide adjustment range
0–35 mm (0–1.38’’, up-down, left-right)
Guide arm adjustment range
0–75 mm (2.95’’)
Horizontal speed
0–120 cm/min (0–47.2 in/min)
Vertical speed
0–110 cm/min (0–43.3 in/min)
Noise level
Less than 70 dB
Weight
14 kg (31 lbs)

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411 mm (16.2’’)
368 mm (14.5’’)
447 mm (17.6’’)

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1.3. Design
The LIZARD welding carriage consists of a chassis, a drive system, a controller,
a cross slide, two guide arms, a cable anchor, and a torch holder. The drive system
contains a gear-motor that drives four rubber wheels.
Permanent magnets fitted at the carriage bottom ensure proper clamping to
ferromagnetic surfaces. The cross slide allows for precise control of the torch holder
position in both the horizontal and vertical axis, and connecting the arc ignition cable
will enable the carriage to ignite an arc when selecting a travel direction.
Fig. 1. View of the LIZARD
Safety line lug
Arc ignition socket
Control panel
Cable anchor
Cross slide
Oscillation socket
Guide arm
Torch holder
Power switch
Limit switch
Magnet ON/OFF lever

LIZARD
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Fig. 2. View of the control panel
1.4. Equipment included
The LIZARD is supplied including the following elements.
Carriage
1 unit
Foam filled cardboard box
1 unit
Cable anchor
1 unit
Short rod torch holder with clamp
1 unit
3 m (10 ft) power cord
1 unit
6.5 m (21 ft) arc ignition cable
1 unit
4 mm hex wrench
1 unit
Operator’s Manual
1 unit
LCD display
Knob F1
Knob F2
Arc ignition switch
(TEST / O / I)
Travel direction switch
(Left / O / Right)
Speed adjustment knob

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2. SAFETY PRECAUTIONS
1. Before beginning, read this Operator’s Manual and complete proper occupational
safety and health training.
2. Use the carriage only in applications specified in this Operator’s Manual.
3. The carriage must be complete and all parts must be genuine and fully operational.
4. The specifications of the power source must conform to those specified on the
ratingplate.
5. Plug the carriage into a properly grounded power source.
6. Never carry the carriage by the cords or the arc ignition cable and never pull them
as this may damage them and result in electric shock.
7. Untrained bystanders must not be present near the carriage.
8. Before beginning, make sure that the correct is the condition of the carriage, power
source, cords, arc ignition cable, plugs, control panel, and wheels.
9. Keep the carriage dry. Exposure to rain, snow, or frost is prohibited.
10. Keep the work area well lit, clean, and free of obstacles.
11. Never use near flammable liquids or gases, or in explosive environments.
12. Make sure that the rubber of the wheels is clean and not damaged.
13. Never disassemble the cover of the wheels.
14. Remove objects attracted to the chassis by the magnet.
15. Transport and position the carriage using the carrying handle and only when the
magnet ON/OFF lever is set to the position ‘O’.
16. Position the carriage on the ferromagnetic workpiece in such a way that the
wheels are in contact with the surface and there is no contact between the
surface and the chassis.
17. Do not stay below the carriage placed at heights.
18. Plug the cords and the arc ignition cable only when the power switch is set to the
position ‘O’.
19. Keep the sockets clean. Do not use compressed air for cleaning.
20. Install only MIG/MAG torches with the handle diameter corresponding to the
torch holder in use.
21. Position the torch not more than 80 mm (3.15’’) outward from the left or right side
of the carriage.

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22. Keep the torch cables from coming in contact with the surface. They must be
suspended to reduce the load of the carriage. Use only cables whose weight is
not more than 12 kg (27 lbs) for horizontal work and 8 kg (18 lbs) for vertical work.
23. Operating on curvatures with a convex or concave radius less than 1500 mm (5 ft)
is prohibited.
24. When operating at heights, use a safety line to protect the carriage from dropping.
25. Always use eye protection (helmet, shield, and screen), hearing protection, gloves,
and protective clothing during operation. Do not wear loose clothing.
26. Before every use, inspect the carriage to ensure it is not damaged. Check whether
any part is cracked or improperly fitted. Make sure to maintain proper conditions
that may affect the operation of the carriage.
27. Never try to manually stop the motion of the carriage. To stop, set the travel
direction switch to the position ‘O’.
28. Maintain only when the carriage is unplugged from the power source.
29. Repair only in a service center appointed by the seller.
30. If the carriage falls from any height, is wet, or has any other damage that could
affect the technical state of the carriage, stop the operation and immediately
send the carriage to the service center for inspection and repair.
31. Never leave the carriage unattended during operation.
32. Remove from the worksite and store in a secure and dry location when not in use.

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3. STARTUP AND OPERATION
3.1. Preparing
Use the carrying handle to transport the carriage to the worksite. Then, set to the
position ‘O’ all the switches (power, travel direction, and arc ignition switch) and the
magnet lever.
Fig. 3. View from the back side
Connect the carriage to the power source, insert the torch into the torch holder,
and then secure it with the knob. Next, insert the torch cable into the cable anchor,
secure it with the knobs, and then fix the anchor in the required position using
the lever.
Knob securing the torch in the holder
Precise torch position
adjustment knobs
Knobs securing the cable in the anchor
Lever securing
the cable anchor
Levers securing the torch
position and angle
Screws securing the guide arm
Carrying handle

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3.2. Connecting to welding circuits
The carriage can control two torches using the arc ignition cable plugged into the arc
ignition socket. To do this, connect any blue-jacketed wire to any terminal of the welding
circuit, and then connect the second blue-jacketed wire to the second terminal of the
same circuit, according to the diagram shown in Fig. 4. To control the second torch,
connect the green-jacketed wires to the terminals of the second welding circuit.
Fig. 4. Connecting the arc ignition cable to welding circuits
To check whether the arc ignition cable is connected correctly, power the carriage
by setting the power switch to the position ‘I’, and set the arc ignition switch to the
position TEST, which should enable the arc for a while.
blue blue
Welding circuit 1
green green
Welding circuit 2

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3.3. Positioning at the worksite
The guide arms must be positioned so that the carriage is in constant contact with the
workpiece. They can be set by a constant step (interval adjustment), or continuously
aftertheyare swapped (continuous adjustment). To set them properly when the carriage
travels to the left, use the 4 mm hex wrench to loosen the screws securing the right
guide arm, move out the right arm about 10 mm (0.4’’) or one groove more than the left
arm (Fig. 5), and then retighten the screws.
Fig. 5. Proper positioning of the guide arms
Switch the magnet ON/OFF lever from left (‘O’) to right (‘I’), which will change the
clamping force from minimum to maximum. Loosen the levers to adjust the position
and angle of the torch, and set the torch position precisely using two knobs located at
the cross slide. When operating at heights, attach a safety line to the lug to prevent
possible injury if the carriage loses the clamping. The safety line is not included in
standard equipment.
Travel direction
Continuous adjustment
Interval adjustment
Swap the guide arms
to change between
methods of adjustment
Grooves
Moving out the right arm
by one groove

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3.4. Starting
Plug the power cord into the power source and turn on the power by setting the
power switch to the position ‘I’. The initial screen with the version number of the
current firmware will show on the display, and the carriage will automatically check
for an oscillator connected to the oscillation socket. If the oscillator is connected,
confirmation message will show. After the initialization of the
control system, the main menu from Fig. 6 will show on the display.
Fig. 6. Example of the main menu
Press and hold the knob F1 for about 3 seconds to enter into the configuration
menu to set welding parameters.
3.5. Programming
The LIZARD welding carriage allows defining up to 40 welding programs. After
entering into the configuration menu, proceed as described in Fig. 7 to move among
the parameters from Tab. 1.
Fig. 7. Configuration menu
Current operating state
Program
number
Unit of speed
Value of speed
Name of parameter. Rotate the knob F1 to change
among parameters listed in Tab. 1.
Value of parameter. Rotate the knob
F2 to change the value by the higher
step indicated in Tab. 1. Press and
rotate the knob F2 to change the
value by the lower step.
Unit of parameter. Can be changed from the setting.

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Parameter
Value
Description
0–130 cm/min
0–52 in/min
[step: 1 or 0.1]
Speed of the carriage.
1–250 cm
1–100 in
[step: 1 or 0.1]
Length of the single weld.
0–100 cm
0–40 in
[step: 1 or 0.1]
Space between welds. If set to
zero, ‘crater fill’ and ‘backweld’
are reset and the carriage works
in the continuous welding mode.
0–3 s
[step: 0.1]
Time of filling the crater. Inactive
if ‘skip’ set to zero, which is
indicated by the sign.
YES
NO
Function of the welding source to
lower the current of the arc while
filling the crater. Time of filling the
crater must be set higher or equal
to the time of the current lowering
that is set at the welding source.
0–2 cm
0–2 in
[step: 0.1]
Length of the backweld. Shorter
or equal to ‘weld length’. Inactive
if ‘skip’ set to zero, which is
indicated by the sign.
0–1000 cm
0–400 in
infinity
[step: 10 or 1]
Longer or equal to the sum of
‘weld length’ and ‘skip’. If set to
infinity, the program executes
until the carriage is stopped
manually.
cm
in
Unit used in the menu.
1–40
Pressing knob F2 saves the
current configuration under the
indicated program number.
1–40
Pressing knob F2 loads the
configuration saved under the
indicated program number.
ENGLISH
POLISH
SPANISH
FRENCH
PORTUGUESE
TURKISH
GERMAN
RUSSIAN
Language of the menu.
Tab. 1. Settings available in basic version of LIZARD

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To change the language of the menu, go to setting by rotating the
knob F1 to the right, and then rotate the knob F2 to choose among the available
languages. After the rest of the parameters from Tab. 1 is set, go to ,
choose a program number by rotating the knob F2, and press the knob to save the
current values under this number. The action is confirmed by showing message
for a short period. To load a previously saved program, proceed as described, but
from setting. Then, to go back to the main menu (Fig. 6), press the
knob F1 and hold it for 3 seconds. If the chosen parameters are not saved, they will
be active only until the current program number is changed in the main menu.
3.6. Welding procedure
Fig. 8shows agraphic description of the welding procedure that starts with the speed
value shown in the main menu when selecting a travel direction. The first stage
involves producing the weld, after which the carriage fills the crater (stage 2) for the
chosen time. Next, the carriage performs the backweld (stage 3) and then moves to
the starting point of the next weld (stage 4). This process is repeated until the carriage
reaches the value of the total length.
Fig. 8. Visualization of the welding procedure according to parameters from Tab. 1
(stage 1)
(stage 3)
Starting point of the first weld
(stage 2)
(stage 4)
Final point of the welding procedure

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3.7. Operating
After setting the power switch to the position ‘I’, the carriage will turn on. If the
carriage is to control the torch, set the arc ignition switch to the position ‘I’.
With state shown on the main menu (Fig. 6)the current program
can be changed by simultaneously pressing and rotating the knob F2. Use the speed
adjustment knob to change the current welding speed. Right rotation increases the
speed by the step of 0.1, and left rotation decreases the speed by the same step.
Use the travel direction switch to select a direction of motion. The carriage will
start moving according to the chosen program parameters. The indication of the current
operating mode will show on the display during program execution. The carriage
speed can be adjusted during operation using the speed adjustment knob; however,
the new speed will not be saved if the current program changes in the meantime.
The carriage stops after reaching the total length and confirmation
message shows on the display. Then, set the travel direction switch to the position
‘O’ to go into the main menu. After the work is finished, turn off the power using the
power switch and unplug the carriage from the power source.
CAUTION! If the arc ignition switch is set to position ‘I’, the torch
will start welding immediately after selecting a travel direction.

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3.8. Using oscillator (accessory)
3.8.1. Installing
Install the oscillator according to the following instructions.
Remove the torch holder 1.
Remove the torch holder plate 2by unscrewing screws 3using 4 mm hex wrench.
Unscrew the cap 4.
Fix the arm 5to the oscillator 6.
Fix the oscillator 6to the bracket 7using two M5x20 screws 8.
Fix the bracket 7to the cross slide 10 using two M5x16 screws 9.
Fix the oscillator plug 11 to the oscillation socket 12.
Fix the low torch holder 13 to the oscillator arm 5.
4
2
3
1
8
7
9
12
10
6
11
5
13

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3.8.2. Welding with oscillation
If the oscillator is connected to the LIZARD welding carriage, several new settings will
appear in the menu (Tab. 2). Welding with oscillation is performed in the standard
manner, however, produced welds form a shape similar to the shape shown in Fig. 9
instead of the straight line from Fig. 8.
Parameter
Value
Description
0–100%
[step: 10% or 1%]
Relative amplitude of the oscillation.
0–100%
[step: 10% or 1%]
Relative speed of the oscillation. The
higher the speed, the shorter the
oscillation period.
0–5 s
[step: 1 or 0.1]
Delay in the top position of the
oscillation.
0–5 s
[step: 1 or 0.1]
Delay in the bottom position of the
oscillation.
YES
NO
Choosing YES locks the capability of
changing delay times during welding.
Tab. 2. Additional settings available with connected oscillator
Fig. 9. Graphic description of the oscillation parameters from Tab. 2
Starting point of the weld
Final point of the weld
1 /

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3.8.3. Operating
The LIZARD welding carriage with connected oscillator is operated similarly to
operating without the oscillator. During welding with the oscillator, the menu indicated
in Fig. 10 is shown on the display.
Fig. 10. Menu shown during welding with the oscillator
If parameter is set to YES, pressing the knob F1 or F2
during operation will not trigger any action. Otherwise, the delay parameters will show
on the display and can be adjusted online (Fig. 11).
Fig. 11. Menu for changing the oscillator dwell times
Rotation of the knob F1 changes the
oscillation amplitude by 1%.
Rotation of the knob F2 changes the
oscillation speed by 1%.
Rotation of the knob F2 changes the delay 2
by 0.1 s. Pressing the F2 switches from
showing delay 2 to oscillation speed.
Rotation of the knob F1 changes the delay 1
by 0.1 s. Pressing the F1 switches from
showing delay 1 to oscillation amplitude.

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3.9. Troubleshooting
Problem
Cause
Solution
Dark LCD display after
powering.
Malfunction of the power
cord, power switch, power
supply unit, or controller.
Contact service center for
inspection and repair.
Anomalies on the LCD display.
Impossible to read the values.
Malfunction of the display
or power supply unit.
Contact service center for
inspection and repair.
Carriage reached the
obstacle at the front.
Remove the obstacle blocking
the movement of the carriage
or choose the opposite travel
direction.
Carriage reached the
obstacle at the rear.
Remove the obstacle blocking
the movement of the carriage
or choose the opposite travel
direction.
Too fast switching between
left and right travel
direction.
Set the travel direction switch
to the position ‘O’.
1. Travel direction switch
not in position ‘O’ when
powering.
2. Displayed during motion
indicates a malfunction of
the travel direction switch
or travel direction
identification circuit of the
controller.
1. Set the travel direction
switch to the position ‘O’.
2. Contact service center for
inspection and repair.

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20
4. MAINTENANCE
Daily:
1. Clean the chassis and the wheels.
2. Clean the rollers of the guide arms and make sure that the rollers rotate freely.
3. Clean the torch nozzle. Replace if damaged.
Monthly:
1. Check whether the knobs and the switches operate as intended. Replace if
loose or damaged.
2. Inspect cables, cords, and hoses. Replace if damaged.
3. Tighten screws if loose.