Weco Multi Power 184 User manual

Cod.006.0001.1380
17/01/2020 v2.6
ENGLISH
WECO srl
Via S. Antonio, 22 - BELVEDERE
36056 TEZZE SUL BRENTA (VICENZA) ITALY
Tel.[phone] –Fax [phone]
www.weco.it - E-mail [email protected]
Multi Power 184
Instruction manual
GB

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1INTRODUCTION................................................................. 4
2FRONT PANEL................................................................... 4
3REAR PANEL..................................................................... 5
4INSTALLATION .................................................................. 5
4.1 CONNECTIONS TO THE ELECTRICAL MAINS NETWORK 5
4.2 PREPARING FOR MMA WELDING ..................................... 5
4.3 PREPARING FOR TIG WELDING ....................................... 6
5USER INTERFACE ............................................................. 7
6UNIT POWER-UP................................................................ 8
7RESET (LOAD FACTORY SETTINGS) ............................... 9
8ALARMS MANAGEMENT................................................... 9
9DERATING ....................................................................... 10
10 WELDING PARAMETERS ................................................ 11
Welding current. ...........................................................................11
Hot-Start ......................................................................................11
Arc-Force..................................................................................... 11
Dynamic Arc.................................................................................11
VRD.............................................................................................11
Long arc voltage MMA..................................................................11
Remote control activation..............................................................11
10.1 PARAMETERS ACTIVATION ............................................ 11
11 WELDING SETTINGS....................................................... 12
11.1 ELECTRODE WELDING (MMA) - CELLULOSE WELDING
(MMA CEL) ....................................................................... 12
11.1.1 MMA –MMA CEL PARAMETERS SETTING (1ST LEVEL) ...........12
11.1.2 MMA –MMA CEL PARAMETERS SETTING (1ST LEVEL) ...........12
11.2 DC TIG WELDING............................................................. 13
11.2.1 DC TIG PARAMETERS SETTING (1ST LEVEL) ...........................13
11.2.2 DC TIG PARAMETERS SETTING (2ND LEVEL)...........................13
12 TORCH TRIGGER MODES ............................................... 14
12.1 LIFT-ARC WELDING......................................................... 14
13 TECHNICAL DATA........................................................... 15
14 SPARE PARTS................................................................. 16
15 ELECTRICAL DIAGRAM .................................................. 18
15.1 MULTI POWER 184 .......................................................... 18
15.2 REMOTE CONTROLLER CONNECTOR ........................... 20

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1INTRODUCTION
IMPORTANT!
This handbook must be consigned to the user prior to
installation and commissioning of the unit.
Read the "General prescriptions for use" handbook supplied
separately from this handbook before installing and
commissioning the unit.
The meaning of the symbols in this manual and the associated
precautionary information are given in the "General
prescriptions for use”.
If the "General prescriptions for use" are not present, it is
mandatory to request a replacement copy from the
manufacturer or from your dealer.
Retain these documents for future consultation.
KEY
This symbol identifies an action that occurs automatically as
a result of a previous action.
This symbol identifies additional information or a reference to
a different section of the manual containing the associated
information.
§
This symbol identifies a reference to a chapter of the manual.
This symbol accompanies important information concerning
the execution of the relevant operations.
Multi Power 184 is an inverter DC TIG/MMA portable welding power
source.
The solidity of the components of this unit makes it a reliable working
companion for workshop and outdoor applications.
The available DC TIG functions and digital control make this unit ideal
for maintenance, building construction, and light metalwork.
In MMA welding the Hot Start and Arc Force functions are adjustable
and they allow improved arc striking, a flatter bead and more uniform
weld.
The Anti Sticking function makes it possible to detach the electrode
rapidly from the workpiece in the event of accidental sticking.
Up to 4,00mm diameter electrode welding is possible in MMA.
The power source is designed to guarantee safety and flexibility
through the following features:
OVERCUT: in case of over-voltage in the supply line, the supply to
the power source is cut off.
The overcut protection protects electronic parts of the machine
against damage caused by voltage surges.
CURRENT AUTO-CALIBRATION: the power source works at a
supply voltage ranging between 115V~±15%/50-60Hz and
230V~±15%/50-60Hz.
The maximum value of the adjustable welding current is automatically
limited based on the supply voltage measured when the power source
is switched on.
DERATING: Derating limits current during welding when supply
voltage drops below the limit value of 190Vac.
This limits current input so as not to overload the inverter and keeps
the welding arc stable.
FANS: Fan speed varies based on power source internal temperature
measured by thermal sensors.
This function brings the following improvements:
reduction of noise.
reduction of dust extracted (cleaner equipment, less
maintenance).
The welding modes and procedures available are those indicated in
the table.
MODE
PROCEDURE
MMA
CELLULOSE
DC TIG
TWO STEP LIFT-ARC (2T)
Accessories that can be connected to the unit:
manual remote controller for remote adjustment of the welding
current.
2FRONT PANEL
1 2
1: Positive pole welding socket.
2: Negative pole welding socket.

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3REAR PANEL
1 3
2 4
1: Welding power source ON/OFF switch.
2: Warning LED for overcut protection triggering.
3: Power cable.
Total length
(including internal part)
2,5 m
Number and cross section of wires
3 x 2,5 mm2
Type of plug supplied
Schuko
4: Remote controller connector.
4INSTALLATION
WARNING!
Lifting and positioning
Read the warnings highlighted by the following symbols in the
“General prescriptions for use”.
4.1 CONNECTIONS TO THE ELECTRICAL MAINS
NETWORK
The characteristics of the mains power supply to which the equipment
shall be connected are given in the section entitled “technical data” on
page 15.
The machine can be connected to motorgenerators provided their
voltage is stabilised.
Connect/disconnect the various devices with the machine switched
off.
4.2 PREPARING FOR MMA WELDING
1. Set the welding power source ON/OFF switch to “O” (unit de-
energized).
2. Plug the power cable plug into a mains socket outlet.
3. Choose the electrode based on the type of material and thickness
of the workpiece to be welded.
4. Insert the electrode in the electrode holder.
5. Connect the electrode holder clamp plug to the following welding
socket: Positive pole welding socket.
6. Connect the earth clamp plug to the following welding socket:
Negative pole welding socket.
7. Connect the earth clamp to the workpiece being processed.
WARNING!
Electric shock hazard!
Read the warnings highlighted by the following symbols in the
“General prescriptions for use”.
8. Set the welding power source ON/OFF switch to “I” (unit
powered).
9. Select the following welding mode on the user interface: MMA
10. Set the required welding parameter values on the user interface.
When the remote controller [RC] is connected and the relative
locking screw is tightened, welding current can be adjusted using
the remote controller.
The system is ready to start welding.

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4.3 PREPARING FOR TIG WELDING
1. Set the welding power source ON/OFF switch to “O” (unit de-
energized).
2. Plug the power cable plug into a mains socket outlet.
3. Connect the gas hose of the TIG torch with gas valve to the pressure
regulator of the gas cylinder.
4. Open the cylinder gas valve.
5. Connect the electrode holder clamp plug to the following welding
socket: Negative pole welding socket.
6. Choose the electrode based on the type of material and thickness
of the workpiece to be welded.
7. Insert the electrode in the TIG torch.
8. Connect the earth clamp plug to the following welding socket:
Positive pole welding socket.
9. Connect the earth clamp to the workpiece being processed.
10. Set the welding power source ON/OFF switch to “I” (unit
powered).
11. Select the following welding mode on the user interface: DC TIG
12. Use the flow control valve to adjust the flow of gas as required
while the gas is flowing out.
13. Set the required welding parameter values on the user interface.
When the remote control pedal is connected and the relative
locking screw is tightened the welding current will vary in relation
to the pressure exerted on the pedal.
The system is ready to start welding.

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5USER INTERFACE
CODE
SYMBOL
DESCRIPTION
L1
This LED illuminates to show an anomaly in the operating conditions.
See “ALARMS MANAGEMENT” (page 9).
L2
When this LED illuminates the last voltage and current average values measured during welding are shown on following displays: D1
The “HOLD” function is cleared when a new weld is started or when any setting is changed.
L3
This LED illuminates to confirm the presence of power on the output sockets.
L4
Illumination shows that the following function has been activated: reduction of the output voltage (U0)
L5
This LED indicates that the current reference setting is imposed by the remote controller.
L6
DC TIG mode: Illumination shows that the following function has been activated: DYNAMIC ARC
L7
Illuminates to show a value in the following unit of measurement: AMPERES
L8
Illuminates to show a value in the following unit of measurement: VOLTS
L9
When this LED illuminates the following parameter can be set: ELECTRODE TYPE
L10
When this LED illuminates the following parameter can be set: HOT-START
L11
When this LED illuminates the following parameter can be set: WELDING CURRENT
L12
When this LED illuminates the following parameter can be set: ARC FORCE
L13
This LED illuminates to show that the following welding mode is selected: MMA
L14
This LED illuminates to show that the following welding mode is selected: CELLULOSE
L15
This LED illuminates to show that the following welding mode is selected: TIG CONTINUOUS
D1
Parameters/functions setting: The display shows the selected parameter.
Welding: The display shows the effective amperes or volts value during welding.
HOLD function: The display shows the current of voltage average values of the last welding process.
E1
Parameters/functions setting: The encoder provides the facility to alter the selected parameter.
Welding: The encoder allows the welding current to be modified.

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CODE
SYMBOL
DESCRIPTION
S1
Parameters/functions setting: This button selects the parameter to be shown on the following display: D1
Possible choices:
-(A) Preset welding current
-(V) No-load voltage
-(EL) Preset type of electrode
Welding: This button selects the parameter to be shown on the following display: D1
Possible choices:
-(A) Effective welding current
-(V) Effective welding voltage
HOLD function: This button selects the parameter to be shown on the following display: D1
Possible choices:
-(A) Average welding current
-(V) Average welding voltage
S2
Press the button once to select the parameters of the first level menu.
Hold down the button for 3 seconds to gain access to the second level menu.
S3
This button selects the welding mode.
6UNIT POWER-UP
Set the welding power source ON/OFF switch to “I” to switch on the unit.
Fx.x
The message appears on the following displays: D1
x.x=
software version
First power-up or power-ups following a RESET procedure
The welding power source sets up for welding with the factory presets.
Subsequent power-ups
The welding power source sets up for welding in the latest stable welding configuration that was active at the time of power-off.
The power source works at a supply voltage ranging between 115V~±15%/50-60Hz and 230V~±15%/50-60Hz.
The maximum value of the adjustable welding current is automatically limited based on the supply voltage measured when the power source is
switched on.
SUPPLY VOLTAGE
CURRENT RANGE THAT CAN BE SET (MMA)
CURRENT RANGE THAT CAN BE SET (TIG)
115 V~ ±15 % / 50 - 60 Hz
10 A –115 A
5 A - 115 A
230 V~ ±15 % / 50 - 60 Hz
10 A –180 A
5 A - 180 A

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7RESET (LOAD FACTORY SETTINGS)
The reset procedure involves complete restoration of the default values, parameters and memory settings set in the factory.
All memory locations will be reset and hence all your personal welding settings will be lost!
The reset procedure is useful in the following cases:
Too many changes made to the welding parameters so user finds it difficult to restore defaults.
Unidentified software problems that prevent the welding power source from functioning correctly.
Set the welding power source ON/OFF switch to “O” to switch the unit off.
S2
S3
Hold down both buttons simultaneously.
Set the welding power source ON/OFF switch to “I” to switch on the unit.
SIMULTANEOUS ACTIONS
S2
S3
Release buttons.
FAC
The message appears on the following displays: D1
Wait for the memory clear procedure to terminate.
8ALARMS MANAGEMENT
This LED illuminates if an incorrect operating condition occurs.
An alarm message appears on the following display: D1
S1
Press the button to display the additional alarm message.
Tab. 1 Alarm messages
MESSAGE
ADDITIONAL
MESSAGE
MEANING
EVENT
CHECKS
Al. H.
t1 xxx
t2 xxx
xxx= temperature
measured by the
probe
Overheating alarm
Indicates tripping of the welding
power source thermal protection.
Leave the unit running so that the
overheated components cool as
rapidly as possible.
When the unit has cooled, the
welding power source will reset
automatically.
All functions disabled.
Exceptions:
-cooling fan.
-Make sure that the power required by the
welding process is lower than the
maximum rated power output.
-Check that the operating conditions are in
compliance with the welding power source
data plate specifications.
-Check for the presence of adequate air
circulation around the welding power
source.
E.02
ntC oFF
Alarm, thermal probes faulty
All functions disabled.
Exceptions:
-cooling fan.
Qualified technical personnel are required for
maintenance jobs
Al.P.
-
Power board alarm
It means that the power board is
malfunctioning
All functions disabled.
Exceptions:
-cooling fan.
Check that the operating conditions are in
compliance with the welding power source data
plate specifications.
If the problem persists:
qualified technical personnel are required for
maintenance jobs

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9DERATING
Derating is a machine function that cannot be selected by the user.
Derating limits the maximum welding current if the supply voltage drops below 190Vac.
For example, if the power source is set to weld with a current of 175A, that current will be the power source output until the supply voltage will
range between 184Vac and 230Vac.
If voltage drops to 165Vac, the power source automatic output current will be 160A.
The following diagram displays the maximum output current, based on the voltage supplied to the power source.

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10 WELDING PARAMETERS
Welding current.
Output current value during welding.
Hot-Start
This parameter aids electrode melting at the time of arc striking.
Consequences of a higher value:
Easier arc strike.
Increased spatter at welding start.
Increase of strike area.
Consequences of a lower value:
More difficult arc strike.
Less spatter at welding start.
Smaller strike area.
Arc-Force
This parameter helps to avoid electrode sticking during welding.
Consequences of a higher value:
Fluidity during welding.
Welding arc stability.
Greater electrode fusion in workpiece.
More welding spatter.
Consequences of a lower value:
The arc is extinguished more easily.
Less welding spatter.
Dynamic Arc
Welding power remains constant even when the distance between
electrode and workpiece changes.
Consequences of a higher value:
The welding arc concentration remains unchanged.
Prevents electrode sticking.
Thin workpieces may become deformed more easily.
VRD
This parameter reduces the potential across the welding sockets
when welding is not in progress.
The arc strike procedure is as follows:
Touch the workpiece with the electrode tip.
Raise the electrode.
Power is released for several seconds.
Touch the workpiece with the electrode tip.
The welding arc will strike.
Long arc voltage MMA
This parameter inhibits power output when the potential between
electrode and workpiece exceeds the preset threshold level.
Consequences of a higher value:
The welding arc persits even with a significant distance between
the electrode and the workspiece.
Consequences of a lower value:
Faster exit from weld.
Remote control activation
This parameter enables the unit to receive the current reference
signal from a remote control.
10.1 PARAMETERS ACTIVATION
The welding parameters are available in accordance with the selected
welding mode and procedure.
MENU
MODE 

PARAMETER 
1°
Welding current



1°
Hot Start


1°
Arc Force


2°
Electrode type

2°
Dynamic Arc


2°
VRD


2°
Long arc voltage MMA

2°
Remote control activation




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11 WELDING SETTINGS
11.1 ELECTRODE WELDING (MMA) - CELLULOSE WELDING (MMA CEL)
S3
Use this button to select one of the following welding modes:
MMA
MMA CEL
11.1.1 MMA –MMA CEL PARAMETERS SETTING (1ST LEVEL)
S2
Press the button to scroll the settings to edit.
In this diagram the LED relative to the setting to be edited illuminates.
The value relative to the selected setting appears on the following displays: D1
E1
Use the encoder to scroll the list of settings to edit.
Tab. 2 - Parameters of the 1st level menu in MMA –MMA CEL mode
PARAMETER
MIN
DEFAULT
MAX
L10
HOT-START
0 %
SYn
100 %
*1 *2
L11
WELDING CURRENT
10 A
80 A
180 A
*3
10 A
80 A
115 A
*4
L12
ARC FORCE
0 %
SYn
200 %
*1 *2
*1: This parameter is set as a percentage referred to the value of the following parameter: WELDING CURRENT
*2: SYN: This code indicates that parameters control is synergic. The optimal value of this parameter is set automatically by the microprocessor
on the basis of the preset welding current value. This value can be displayed but it is not user-adjustable.
When SYN is installed, to display the synergic value press the following button: S1
*3: With supply voltage > 130Vac when the power source is switched on.
*4: With supply voltage < 130Vac when the power source is switched on.
11.1.2 MMA –MMA CEL PARAMETERS SETTING (1ST LEVEL)
S2
Hold down the button for 3 seconds to gain access to the 2nd level menu.
The acronym relative to the selected setting appears on the following displays: D1
E1
Use the encoder to scroll the list of settings to edit.
S2
Press the button to confirm.
The value relative to the selected setting appears on the following displays: D1
E1
Using the encoder, edit the value of the selected setting.
Exit without confirmation
Press any button (except S2).
This action will automatically close the menu.
Exit with confirmation
S2
Press the button.
This action will automatically close the menu.

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Tab. 3 - Parameters of the 2nd level menu in MMA –MMA CEL mode
PARAMETER
MIN
DEFAULT
MAX
EL.
ELECTRODE TYPE
-
bAS
-
bAS= basic
rUt= rutile
Crn=
chromium/nickel
ALU= aluminium
d.Ar.
DYNAMIC ARC
oFF
oFF
on
*2
Urd
VRD
oFF
oFF
on
*2
U.EL.
LONG ARC VOLTAGE MMA
37
SYn
65
*3
rC
REMOTE CONTROLLER ACTIVATION
oFF
oFF
on
*1
*1: The activation is suitable for the following welding modes:
MMA
MMA CEL
DC TIG
Compatible remote control types:
manual remote controller.
*2: The activation is suitable for the following welding modes:
MMA
MMA CEL
*3: SYN: This code indicates that parameters control is synergic. The optimal value of this parameter is set automatically by the microprocessor
on the basis of the preset welding current value. This value can be displayed but it is not user-adjustable.
When SYN is installed, to display the synergic value press the following button: S1
11.2 DC TIG WELDING
S3
Use this button to select one of the following welding modes:
DC TIG
11.2.1 DC TIG PARAMETERS SETTING (1ST LEVEL)
S2
Press the button to scroll the settings to edit.
In this diagram the LED relative to the setting to be edited illuminates.
The value relative to the selected setting appears on the following displays: D1
E1
Use the encoder to scroll the list of settings to edit.
Tab. 4 - 1st level menu parameters in DC TIG mode
PARAMETER
MIN
DEFAULT
MAX
L11
WELDING CURRENT
10 A
80 A
180 A
*1
10 A
80 A
115 A
*2
*1: With supply voltage > 130Vac when the power source is switched on.
*2: With supply voltage < 130Vac when the power source is switched on.
11.2.2 DC TIG PARAMETERS SETTING (2ND LEVEL)
S2
Hold down the button for 3 seconds to gain access to the 2nd level menu.
The acronym relative to the selected setting appears on the following displays: D1
E1
Use the encoder to scroll the list of settings to edit.
S2
Press the button to confirm.
The value relative to the selected setting appears on the following displays: D1
E1
Using the encoder, edit the value of the selected setting.
Exit without confirmation
Press any button (except S2).

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This action will automatically close the menu.
Exit with confirmation
S2
Press the button.
This action will automatically close the menu.
Tab. 5 - 2nd level menu parameters in DC TIG mode
PARAMETER
MIN
DEFAULT
MAX
rC
REMOTE CONTROLLER ACTIVATION
oFF
oFF
on
*1
*1: The activation is suitable for the following welding modes:
MMA
MMA CEL
DC TIG
Compatible remote control types:
manual remote controller.
12 TORCH TRIGGER MODES
12.1 LIFT-ARC WELDING
1. Open the torch valve to let the gas out.
2. Touch the workpiece with the torch electrode.
3. Slowly lift the torch to strike the arc.
The welding current reaches the preset value.
4. Quickly move the torch clear of the workpiece to extinguish the welding arc.
5. Close the torch valve to interrupt the gas flow.

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13 TECHNICAL DATA
Model
Multi Power 184
Construction standards
EN 60974-1
EN 60974-10 Class A
Supply voltage
1 x 230V~ ± 15 % / 50-60 Hz
1 x 115V~ ± 15 % / 50-60 Hz
Dimensions ( L x D x H )
400 x 160 x 260 mm
Weight
10.4 kg
Insulation class
H
Protection rating
IP23S
Cooling
AF
Maximum gas pressure
0,5 MPa (5 bar)
Zmax
Compliant with EN 61000-3-12
Hook-up not dependent on the supply network
Supply voltage
1 x 230V~ ± 15 % / 50-60 Hz
1 x 115V~ ± 15 % / 50-60 Hz
Mains protection
16 A Delayed
32 A Delayed
Temperature of the environment
40°C
40°C
Welding mode
MMA
TIG
MMA
TIG
Static characteristic
Work cycle
35 %
60 %
100 %
35 %
60 %
100 %
50 %
60 %
100 %
-
-
100 %
Welding current
180 A
130 A
120 A
180 A
130 A
120 A
115 A
110 A
105 A
-
-
115 A
Working voltage
27.2 V
25.2 V
24.8 V
17.2 V
15.2 V
14.8 V
24.6 V
24.4 V
24.2 V
-
-
14.6 V
Maximum input power
5.8 KVA
4.0 KVA
3.6 KVA
3.9 KVA
2.6 KVA
2.3 KVA
3.5 KVA
3.3 KVA
3.1 KVA
-
-
2.2 KVA
Maximum input power
5.6 KW
3.8 KW
3.4 KW
3.7 KW
2.4 KW
2.1 KW
3.3 KW
3.2 KW
3.0 KW
-
-
2.1 KW
Maximum supply current
25.3 A
17.3 A
15.4 A
16.9 A
11.1 A
9.9 A
29.3 A
28.2 A
27.0 A
-
-
18.5 A
Maximum effective current
15.0 A
13.4 A
15.4 A
10.0 A
8.6 A
9.9 A
20.7 A
21.8 A
27.0 A
-
-
18.5 A
No-load voltage (U0)
83 V
83 V
83 V
83 V
Reduced no-load voltage (Ur)
11 V
11 V
11 V
11 V

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14 SPARE PARTS

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N°
CODE
DESCRIPTION
1
011.0006.0031
HANDLE
2
011.0000.0121
UPPER COVER
3
050.0002.0165
LINE FILTER BOARD
4
050.0003.0169
COMPLETE POWER BOARD (with board .0166)
5
050.0002.0098
SNUBBER BOARD
6
032.0002.2403
ISOTOP DIODE
7
040.0003.1008
TERMAL SWITCH
8
050.0001.0154
PRIMARY RECTIFIER BOARD
9
046.0004.0009
TUNNEL PLASTIC INSULATION
10
010.0006.0044
COMPLETE FRONT PLASTIC PANEL
11
021.0001.0260
FIXED SOCKET 400A
12
050.5029.0000
COMPLETE LOGIC FRONT PANEL
13
022.0002.0206
LED WIRING
14
005.0001.0004
BELT
15
011.0003.0054
VENTILATION SHROUD
16
043.0002.0621
OUTPUT TOROIDAL FILTER
17
011.0003.0057
BOOST INDUCTANCE SUPPORT
18
044.0004.0017
BOOST INDUCTANCE
19
044.0004.0031
OUTPUT INDUCTANCE
20
011.0003.0051
LOWER COVER
21
042.0003.0043
POWER TRANSFORMER
22
011.0003.0056
TRANSFORMER SUPPORT
23
015.0001.0018
HEAT SINK
24
011.0003.0052
TUNNEL HOUSING
25
011.0003.0053
FAN SUPPORT
26
003.0002.0017
FAN
27
010.0006.0042
COMPLETE REAR PLASTIC PANEL
28
013.0014.0400
REAR PANEL
29
016.4107.0001
LED HOLDER
30
040.0001.0011
TWO-POLE SWITCH
31
016.0011.0002
CAP Ø=13
32
045.0000.0014
CABLE CLAMP
33
022.0002.0005
REMOTE CONTRO WIRING
34
033.0005.0013
IMS MODULE
35
050.0002.0166
INVERTER + CONTROL BOOST BOARD
36
045.0002.0008
NEOPRENE SUPPLY CABLE
37
050.0002.0103
OUTPUT FILTER BOARD
38
041.0004.0301
CURRENT SENSOR
39
011.0016.0125
C.U. CONNECTION COVER PLATE
40
014.0002.0010
KNOB WITH CUP WITHOUT INDICATOR
41
045.0006.0123
CURRENT SENSOR BRACKET

Cod.006.0001.1380
17/01/2020 v2.6
ENGLISH
Multi Power 184
18/22
15 ELECTRICAL DIAGRAM
15.1 MULTI POWER 184

Multi Power 184
Cod.006.0001.1380
17/01/2020 v2.6
ENGLISH
0
19/22

Cod.006.0001.1380
17/01/2020 v2.6
ENGLISH
Multi Power 184
20/22
15.2 REMOTE CONTROLLER CONNECTOR
cod. 021.0004.0602
Rc01: electrical diagram
2 kOhm - 10 kOhm potentiometer