Riland Multipro 200SP User manual

Multipro 200SP
WELDING MACHINE
USER MANUAL

Meet a better way of welding!
For your own and other people’s safety, please read the manual carefully before
operating. And the user manual must always be available near the welding machine.
Announcement
The contents of this manual are updated irregularly for updating of product. The
manual is only used as operation guide, except for other promises. No warranties of
any kind, either express or implied are made in relation to the description, information
or suggestion or any other contents of the manual.
Version
Version YF-TAE-0129, A1. Released on August 16, 2022.
The images shown here are indicative only. If there is inconsistency between
the image and the actual product, the actual product shall govern.

CONTENTS
1. SAFETY WARNING........................................................................................................................................... 3
2. PRODUCT DESCRIPTION...............................................................................................................................8
3. TECHNICAL PARAMETERS........................................................................................................................... 9
4. INSTALLATION INSTRUCTION....................................................................................................................10
5. PANEL FUNCTION ILLUSTRATION............................................................................................................13
6. ATTENTION & PREVENTIVE MEASURES................................................................................................19
7. POTENTIAL OPERATING PROBGLEMS.................................................................................................. 20
8. DAILY MAINTENANCE...................................................................................................................................21
9. DAILY CHECKING........................................................................................................................................... 22
10. TROUBLESHOOTING AND FAULT FINDING........................................................................................... 24
11. NITIAL PROBLEMS DIAGNOSE..................................................................................................................25
12. OPERATION PARAMETER RECOMMENDATION................................................................................... 27
13. CIRCUIT DIAGRAM........................................................................................................................................ 29

3
SAFETY WARNING
Security Definitions
It indicates that neglecting safety warnings may result in serious accidents,
even death or serious injury.
It indicates that neglecting safety warnings may result in minor injury to
personnel or property damage.
It indicates that neglecting safety warnings may result in equipment failure or
damage.
Personal Protection Precautions
Personnel with professional qualifications or relevant knowledge and skills are requested to
install, operate, maintain and repair the power source.
Installation, inspection and repair of power source must be carried out by electricians, and
temporary construction points should be connected by electricians.
Supervisors shall be provided for working in high altitude or narrow places, such as boxes,
boilers, cabins, etc.
Personal protective equipment, such as protective masks, overalls, insulating gloves and
insulating shoes, should be worn when working.
Those who use cardiac pacemakers shall not approach the power source in use and welding
workplaces without the permission of a physician.
Installation Operation Precautions
The power source shall not be used for pipeline thawing, battery load or motor
start-up.

4
Beware of Electric Shocks
Before welding, the yellow-green grounding wire in the power line must be grounded and the
insulation of the welding cable must be ensured.
During welding operation, do not touch live parts such as workbench, welding parts, earth
clamp, electrode holder or welding torches.
Rubber insulation pads should also be laid on the ground near the operating table for welding
operations with high no-load voltage and in wet working places.
In the welding process, do not open the machine house and side cover.
Do not touch the electrically charged parts.
Do not use cables with insufficient cross-section, damaged insulation sheaths or exposed
conductors.
Maintenance operation should be carried out after 5 minutes of disconnection of the power
supply until the power indicator is completely turned off, otherwise there is a risk of electric
shock.
Turn off all input power when transferring work place, replacing fuse, repairing or not using the
equipment.
Beware of welding fume and harmful gases
When welding steel plates with coatings or coatings, harmful fumes and gases will be produced.
Full ventilation or exhaust facilities should be used to keep fumes and toxic gases away from
the breathing area. If necessary, wear breathing protection tools.
When working in narrow places, such as boxes, boilers, cabins, etc., pleaseacceptthe
inspection of supervisors. In order to prevent hypoxia, we should fully ventilate and wear
respiratory protective equipment.
Keep ventilation system of welding machine unblocked. The minimum distance between power
source and surrounding place should be greater than 0.5m. Do not cover the inlet and outlet of
equipment to ensure smooth circulation of cooling air.

5
Welding Sparks May Cause Fire or Explosion
Corresponding protective measures should be taken in the welding area to avoid fire caused by
welding mars.
Do not carry out welding operations in degreasing, cleaning and spraying areas.
Do not weld gas-filled pipes, sealing grooves (boxes) and other devices, otherwise explosions
or fires are likely to occur.
Do not weld near flammable gases or devices with flammable substances, otherwise explosion
or fire may occur.
When not welded, make sure that any component in the wire circuit does not contact the
workpiece or the earth, otherwise it may cause overheating and fire.
When the welding operation is stopped, remove the electrode in the welding pliers or cut off the
welding wire in the nozzle of the welding torch.
Electrical Base Field May be Dangerous
Those who use cardiac pacemakers shall not approach the power source in use and welding
workplaces without the permission of a physician.
It is strictly forbidden to place or wrap welded cables around the body.
Do not place the body between the welding wire and the workpiece cable. If the welding wire
cable is on the right side of the body, the workpiece cable should also be on the right side of the
body.
Arc Rays May Cause Burns
When welding or supervising welding, please wear protective appliances with adequate
shading.
Protective barriers are set around the welding site to prevent arc or welding spatter from
injuring others.

6
Avoiding Electromagnetic Interference
Users should ensure that the welding power supply and other equipment in the environment do
not produce electromagnetic interference, otherwise corresponding shielding and protection
measures should be taken.
According to the manufacturer's suggestion, the power source should be connected to the main
power supply line.
The length of welded cables should be shortened as far as possible to make them close to each
other and to the ground.
Safety of all metal assemblies assembled by welding and the assemblies connected with them
should be confirmed.
The yellow-green grounding wire in the power line must be grounded, and the workpiece must
be well connected with the ground clamp.
Users should be responsible for the interference caused by welding.
Noise Produced during Welding can Easily Cause Hearing Loss
In order to avoid the harm of noise to you and others, please wear the prescribed protective
equipment.
Cautions for Hoisting
The power source with strap or handle is prohibited from using strap or handle for lifting.
When lifting power source with lifting forklift truck, in order to prevent dumping, please fork-fit
and fix it from side.
When lifting power source with crane, the cable should be tied to the suspension ring, and the
angle between the cable and the vertical direction should not exceed 15 degrees.
When the power source with cylinder and wire feeder is hoisted, the two equipments should be

7
unloaded from the power supply first. When moving the power source on the ground, it is
necessary to fix the cylinder with a strap or chain to prevent dumping and injuring people.
If the wire feeder is hoisted by lifting lugs for welding, it is necessary to ensure that it is firm and
insulated.
Rings
Handle

8
PRODUCT DESCRIPTION
The welding machine applies the most advanced inversion technology in the world.
The principle of inversion is to transform the power frequency of 50Hz/60Hz into direct current and
invert it into high frequency (50KHz) through high-power device IGBT, then perform voltage-drop and
commutation with the output high-power D.C power supply via Pulse Width Modulation (PWM).
Since the switch power inversion technology is adopted, the weight and volume decrease greatly while
the conversion efficiency increased by more than 30%
The welding machine has the functions of MMA, TIG and MIG. It adopts full digital panel display, which
can realize synergic adjustment of feeding speed and welding voltage as well to regulate the welding
parameters easily.
Our CO2gas shielded welding machine is equipped with unique electronic reactor circuit, which can
precisely control the short-circuiting transfer and mixed transfer resulting in better performance than
other machines. Compared with silicon-controlled welding machines and tapped welding, our products
have the following advantages: stable wire feed rate, portable, energy-saving, electromagnetic noise
free. Besides, our products spatter less, easier arc starting, deep welding pool, high duty cycle etc.
This equipment is portable with full function of MMA and plasma cutting having merits of
high-efficiency; power-saving etc .It is especially suitable for family usage and need of different metals
or techniques demand.
Thank you for choosing our products. Please feel free to propose your valuable suggestions; we will
make efforts to perfect our products and service.
WARNING！
The machine can cause radio interference. The operator shall take preventative
measures to mitigate them.

9
TECHNICAL PARAMETERS
Type
Item Multipro 200SP
Power voltage (V) 1 phase 230V15% 1 phase 115V15%
Frequency (Hz) 50/60 50/60
Maximum rated input current (A)
32.7 (MIG)
26.7 (TIG)
32.2 (SMAW)
24 (MIG)
17.2 (TIG)
24.5 (SMAW)
No-load voltage(V) 61 61
Output current adjustment (A)
35-200 (MIG)
15-180 (TIG)
15-160 (SMAW)
40-90 (MIG)
15-85 (TIG)
15-75 (SMAW)
Output voltage (V)
15.7-24 (MIG)
10.6-17.2 (TIG)
20.6-26.4 (SMAW)
16-18.5 (MIG)
10.6-13.4 (TIG)
20.6-23 (SMAW)
Duty cycle 25% 30%
Power factor 0.73 0.73
Efficiency (%) 80 80
Type of wire feeder Internal Internal
Wire feed speed (inch/min) 120-440 (3-11m/min) 120-240 (3-6m/min)
Post flow time (s) 3 3
Welding wire diameter (inch) .030"/.040" (0.8/1.0mm) .030" (0.8mm)
Insulation grade H
Housing protection grade IP21
EMC grade B
Welding thickness (inch) More than .030" (0.8mm)
Weight (lb) 28.2 (12.8kg)
Overall dimension (inch) 16.5*8.7*17.3 (420*220*439mm)

10
INSTALLATION INSTRUCTION
The welding equipment is equipped with power voltage compensation device. It keeps the machine
working normally when power voltage fluctuates ±15% of rated voltage.
When using long cable, in order to reduce voltage drop, big section cable is suggested. If the cable is
too long, it will affect the performance of arcing and other system functions, it is suggested to use the
recommended length.
1. Make sure the intake of the machine is not covered or blocked to avoid the malfunction of the
cooling system.
2. Make sure the earth end of power interface has been reliably and independently grounded.
Installation Procedures:
Installation for MIG process
1) Connect the gas cylinder to the regulator. Select correct shielding gas for the application.
2) Fit the wire spool to the machine. Select
correct welding wire for application.
3) Select the appropriate feed roller to suit the
wire being used.
- V groove for use with solid carbon
manganese and stainless steel.
- U groove for use with soft wires such as
aluminum.
4) Loosen the wire feed tension screws an
d
insert the wire. Refit and tension roller
s
ensure the wire is gripped sufficiently so a
s
not to slip but avoid over-tightening as this can affect feed quality and cause wire feed components
to wear rapidly.
5) Fit and tighten the torch (A) on the output connection (1). Ensure correct torch liner and contact tip
are selected.
6) Selectthecorrectpolarityforthetypeofwireusedasindicatedontheconsumable packaging.
This is achieved by swapping the polarity terminal wires. For most solid wires the terminal should
be set as torch positive.
For torch positive, plug the short mechanical connector (C) on the front panel into the positive
terminal (2) and the work return lead (B) into the negative terminal (4).
For torch negative, plug the short mechanical connector (C) into the negative terminal (4), and
the work return lead (B) into the positive terminal (2).

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Installation for MIG setup with optional spool torch
NOTE:Ensure that all power to machine is turned off before connecting the spool torch.
1) Connect the gas cylinder to the regulator. Select correct shielding gas for the application.
2) Plug spool torch connection (A1)int
o
output connection (1).
3) Plug spool torch control cable (A2)int
o
control connection (3).
4) Fit wire spool to the spool torch.
- Lift cover up
- Remove retaining screw by turning
clockwise.
- Slide mini spool in
- Adjust spool tension using knurled ring o
n
the spool shaft
- Feed wire through front of the torch
-Closecover
5) Select the correct polarity for the type of wire used as indicated on the consumable packaging.
This is achieved by swapping the polarity terminal wires. For most solid wires the terminal should
be set as torch positive.
For torch positive, plug the short mechanical connector (C) on the front panel into the positive
terminal (2) and the work return lead (B) into the negative terminal (4).
For torch negative, plug the short mechanical connector (C) into the negative terminal (4), and
the work return lead (B) into the positive terminal (2).
6) Turn machine on.
The spool torch indicator light will illuminate.
Please note wire feed speed is only active from the spool torch.
Optional spool gun purchased separately

12
Installation for TIG process
1) Connect the gas cylinder to the regulator. Connect gas hose to the regulator. Connect the TIG gas
hose (A2)to the free end of the gas hose. After disconnecting the gas hose from the back ofthe
machine. Select correct shielding gas for the application.
2) Connect the plug (A1) of the TIG torch t
o
negative (4) terminal of the front panel, an
d
fasten it clockwise.
3) Connect work return lead (B) to positiv
e
terminal (2) on the front panel, and fasten i
t
clockwise. Connect the clamp end to the
workpiece.
The short mechanical connector (C) shoul
d
remain hanging free.
Installation for MMA process
1) Connect the electrode holder (A) to the positive terminal (2) of the machine and fasten it clockwise.
2) Connect the work return lead (B)intoth
e
negative terminal (4)ofthemachinean
d
fasten it clockwise.
Please note that for manual metal arc (MMA
)
welding the electrode holder can be switche
d
to the negative pole of the welding machine i
f
so required by the specification of th
e
electrode.
The short mechanical connector (C) shoul
d
remain hanging free.
This procedure shall be operated by electrician!
Connect proper power cable to the distribution box with corresponding capacity according to the input
voltage and current (see technical parameter table). Do not connect to the inappropriate voltage and
make sure that the difference in power supply is within permitted range.

13
PANEL FUNCTION ILLUSTRATION
1Multifunctional Data Display
2Data Selection Key
Under MMA mode: can open or close VRD function by long pressing on the data selection
key.
Under MIG mode: can select parameters and choose the welding mode (2T/4T) by pressing
the Data Selection Key.
3Multifunctional Data Adjusting Knob
Fine tuning: press the knob and turn the knob.
Coarse tuning: turn the knob.
4Spool Torch Indicator
5Function Switch Key
The MIG-CO2/FCAW, MIG/MIX, Lift TIG and SMAW switch key.
6MIG-CO2/FCAW Indicator
7MIG/MIX Indicator
8Lift TIG Indicator
9SMAW Indicator
Polarity conversion joint
This machine has the polarity conversion; There are positive output terminal and negative output
terminal between wire feeder and wire spool; When using solid wire with gas protection, torch
socket should be connected to the positive output terminal, ground cable should be connected to
the negative output terminal; When using flux-cored wire, the two connected cables should be
exchanged.

14
Operation instruction:
1）The starting up display
Switch on the welding power source, the front panel displays as Fig.1.AftertheMultifunctional
Data Display (or any key or knob on front panel) flashes for 5 seconds, the machine enters into the
welding mode that saved in the last shutdown.
Fig.1 Starting up Display Interface
2）Operation instruction under MIG mode
1Set welding mode:
When welding stops, press the Function Switch Key to choose the welding mode, the
machine enters into MIG/MIX mode (Fig.2)whileMIG/MIX indicator lights up, and enters into
MIG-CO2/FCAW mode (Fig.3) while MIG-CO2/FCAW indicator lights up.
Fig.2 MIG/MIX Mode Fig.3 MIG-CO2/FCAW Mode
Under MIG mode, the wire can be fed at high speed by pressing the torch switch for a while
without welding. To stop wire feeding, press the torch switch again.
22T/4T mode:
Under MIG mode, press Data Selection Key for 2s to choose the 2T/4T mode.
2T icon in the Multifunctional Data Display lighting up means 2 step control way: press the
torch switch, feed the gas in advance, and perform welding normally; release the torch switch,
burn back and get rid of the ball on the end of wire, then stop feeding gas 3 seconds later.
4T icon in the Multifunctional Data Display lighting up means 4 step control way: press the
torch switch for the first time, feed the gas in advance, and ignite the arc to perform welding,
then release the torch switch and perform welding normally. Press the torch switch for the
second time, the welding current attenuates until to crater value and keep on, then release the
torch switch again, burn back and get rid of the ball on the end of wire, then stop feeding gas 3
seconds later.

15
3Adjusting parameters:
Under MIG mode, you can adjust the voltage, inductance and wire feeding speed.
By default, you can adjust the wire feeding speed.
Press the Data Selection Key for the first time, the Multifunctional Data Display shows as
Fig.4, which means the welding voltage is adjustable, and the adjustment range ofpreset
voltage is ±20%.
Press the Data Selection Key for the second time, the Multifunctional Data Display shows
as Fig.5, which means the inductance is adjustable, and its adjustment range is ±10%.
Without any operation after 5s, the Multifunctional Data Display wouldturnbacktothe
default state. The settings will be retained when the machine closed, and displayed when the
machine restarts.
4Spool welding mode:
The machine will go to the spool welding mode when connecting with spool torch, the Spool
Torch indicators light up (Fig.6).
Fig.6 Spool Welding Mode Fig.7 The Status of Perform Welding
NOTE:
While connecting with spool torch, the Function Switch Key is not adjustable, and the
wire feeding speed is adjusted by the spool torch.
5The panel would display these data when restarting the machine next time if the parameters
keep unchanged.
6The panel displays as Fig.7 when performing welding, the welding voltage is 18.4V, and the
current is 80A.
7Releasing the torch switch and stopping welding, the panel displays as Fig.8. Moreover,
Fig.4 Fine Adjustment Display of
Voltage Presetting Range
Fig.5 Fine Adjustment Display of
Inductance Range

16
“HOLD” flashes for 3 seconds and quenches, which means the welding stops. 2 seconds later,
Multifunctional Data Display redisplays the preset current.
Fig.8 The Status after Stop Welding under MIG Mode
3）Operation instruction under LIFT TIG mode.
1When welding stops, press the Function Switch Key to LIFT TIG mode. The LIFT TIG
indicator light will illuminate (Fig.9).
Fig.9 LIFT TIG Mode
2Adjusting current:
The welding current can be adjusted the Multifunctional Data Adjusting Knob while welding.
See the chapter “TECHNICAL PARAMETERS” for the range of output current.
The settings will be retained when the machine closed, and displayed when the machine
restarts.
3The panel displays as Fig.10 when performing welding, the welding voltage is 13.2V, and the
current is 80A. It will go to the default state of welding current in 5 seconds when stopping
welding.
Fig.10 LIFT TIG Mode

17
4）Operation instruction under MMA mode.
1Set welding mode:
When welding stops, press the Function Switch Key to MMA mode，the SMAW indicator
lights will illuminate.
2VRD function:
Press the Data Selection Key for 3 seconds, the VRD reduces open circuit voltage to a safe
limit and the function is enabled (Fig.11).
Press the Data Selection Key for 3 seconds again, the VRD function is closed. (Fig.12)
Fig.11 MMA Mode with VRD Enabled Fig.12 MMA Mode without VRD Display
3Adjusting current:
Adjusting the Multifunctional Data Adjusting Knob can change the welding current during
welding process. See the chapter “TECHNICAL PARAMETERS” for the range of output
current.
The settings will be retained when the machine closed, and displayed when the machine
restarts.
4 Three seconds after setting the welding parameters, the Multifunctional Data Display will
flash for one time, which means the data has been saved. Moreover, the panel will display
these data when restarting the machine next time if the parameters keep unchanged.
5 The panel displays as Fig.13 when performing welding, the welding voltage is 23.2V, and the
current is 80A. It will go to the default state of welding current in 5 seconds when stopping
welding.
Fig.13 The Displays Status when Welding under MMA Mode.

18
Malfunction display：
1）Malfunction display of wire feeder
The panel displays as Fig.14 when the wire feeder is malfunctioning, and the Multifunctional
Data Display flashes continuously, the machine can not work normally. Please restart the
machine, the panel would display the parameters that were set before malfunction occurrence.
Fig.14 Malfunction Display of Wire Feeder
2）Malfunction display of over-current
The panel displays as Fig.15 when over-current, and the Multifunctional Data Display flashes
continuously, the machine can not work normally. Restart the machine, the panel would display
the parameters that were set before malfunction occurrence.
Fig.15 Malfunction display of over current
3）Malfunction display of overheating protection
The panel displays as Fig.16 when overheating, and the Multifunctional Data Display flashes
continuously, the machine can not work normally. Only when the temperatureofthewelding
machine falls below 60℃, the overheating malfunction would disappear, and the machine work
normally without restarting.
Fig.16 Malfunction display of overheating protection