Specifications

SpecificationsBOC
BOCMIG
MIG170P/190C
170P/190C

Model No. 170P 190C

Part No. B621117001 B621119001
Supply Voltage (V) 220-240 220-240
Frequency (Hz) 50/60 50/60
Phase 1 1
Rated primary current (A) 15 15
Supply Fuse (recommended A) 20 20
Primary cable length (m) 2 3
Welding current (Amps) 35-150 35-190
Duty Cycle 23% @140A 15% @ 175A
Output Voltage OCV (V) 19.5 - 34.2 16-35
Voltage Steps 6 8
Inductance Settings N/A N/A
Remote interconnection cable length (m) N/A N/A
BOC gun/length (m) MG17i/3 MG17i/3
Wire Feed Speed (m/min) 0-15 0-15
Wire Diameter (mm) Solid 0.6 - 0.8 0.6 - 0.8
Soft 0.6 - 0.9 0.6 - 0.9
Flux Cored 0.8 - 1.2 0.8 - 1.2
Weight (Kg) 27 46
Dimensions HxWxL (cm) 48 x 21 x 53 66 x 38 x 86

25
BOC MIG 170P/190C Welding Machine 1
 Parts Details BOC
Component MIGBOC
Details 170P
MIG 170P Component
Parts DetailsDetails
BOC MIGBOC MIG-170P
170P Internal
Internal
12 1 10
31

39 6

30
18

33

34
27
29

35
28

9
3151180

2
8 3
5
26

NO. PART NO. DESCRIPTION

1 4292610 CONTROL CARD FOR SERIAL NUMBERS UP TO 1222675
NO. PART NO. DESCRIPTION 1.1 SP000437 CONTROL CARD FOR SERIAL NUMBERS OVER 1222675
26 3145440 SIDE PLATE RIGHT 2 9755671 CAPACITOR
27 3145430 DOOR 3 4292420 INSULATION / CAPACITOR
28 9549064 SLIDE LOCK 4 9750158 RECTIFIER
Rectifier
29 2062900 PLASTIC HANDLE 5 3144920 CHOKE
9750158
30 9775728 THERMAL OVERLOAD LIGHT 6 954421501 COOLING FAN
31 9761221 ON/OFF SWITCH 8 4291990 PTC RESISTOR
33 9760313 VOLTAGE SWITCH 9 3145410 TRANSFORMER
34 9771509 MACHINE SOCKET DIX 25 10 956300201 SOLENOID VALVE
35 9568913 HOSE CONNECTOR 12 9370157 GAS HOSE
39 9791650 TORCH INLET RING 18 2062070 HUB FOR WIRE REEL

2 BOC MIG 170P/190C Welding Machine BOC MIG 170P/190C Welding Machine 3
 Component Details BOC MIG 170P Internal Zoom
Component Details BOC MIG 190C
Parts Details BOC MIG 170P - Internal Zoom Parts Details BOC MIG 190C
Refer Image 2
33 Page 17 of MIG 320R/450R Section

29
13

38

16
9542004

34

14
9542001 32

31
9761221

30 39
9775728
37
9547770

NO. PART NO. DESCRIPTION

29 2062900 HANDLE
30 9775728 THERMAL OVERLOAD LIGHT
31 9761221 ON/OFF SWITCH
32 9760315 VOLTAGE SWITCH
33 9759111 KNOB D36 WIRE SPEED
NO. PART NO. DESCRIPTION 34 9791650 INLET RING
13 9541084 MOTOR / GEARBOX WIRE FEEDER 30 37 9547770 WHEEL, CASTOR
14 9542001 CHASSIS WIRE FEEDER 38 9761350 2T / SPOT / 4T SWITCH
16 9542004 REAR GUIDE TUBE COOP 39 9771509 MACHINE SOCKET DIX 25

4 BOC MIG 170P/190C Welding Machine BOC MIG 170P/190C Welding Machine 5
 Component Details BOC MIG 190C
Parts Details BOC MIG 190C Parts Details BOC MIG 190C - Internal 28

27 12
1 10

Switch
32

36

3
Insula

26

tion Capaci
9
3151190 42924203
2 5 4 tor 7
6
42
9425220

9755671
35
NO. PART NO. DESCRIPTION
1 4292610 CONTROL CARD A001
2 9755671 CAPACITOR
3 4292420 INSULATION / CAPACITOR
4 9750157 RECTIFIER
5 4291990 PTC RESISTOR
6 3144920 CHOKE
NO. PART NO. DESCRIPTION 7 954421501 COOLING FAN
26 3145440 SIDE PLATE RIGHT 9 3145410 TRANSFORMER
27 3145430 DOOR PLATE 10 956300201 SOLENOID VALVE
35 9547105 REAR WHEEL 12 9370157 PLASTIC HOSE 5/8,2
36 9568913 HOSE CONNECTOR 28 9549064 SLIDE LOCK
42 9425220 LOCKING RING SHAFT D 20 32 9760315 VOLTAGE SWITCH

6 BOC MIG 170P/190C Welding Machine BOC MIG 170P/190C Welding Machine 7
 Component Details BOC MIG 190C Internal Zoom
Part Details BOC MIG 190C - Internal Zoom Component Details
Parts Details BOC MGBOC MGI7iGun
17i Torch Torch Gun
MG17i (Part No. BMG1702/3)

13

13 12 10 11 9
16
7 5 3 1
6 4 2

16 15 14 8 17
15

14 NO. PART NO. DESCRIPTION

1 B9580101 GAS NOZZLE - STANDARD
B4113470 GAS NOZZLE - SPOT
B958010E GAS NOZZLE - THICK WALL
2 B9591010 INSULATING BRUSH
3 B9876634 CONTACT TIP 0.6MM/M6
B9876635 CONTACT TIP 0.8MM/M6
B9876633 CONTACT TIP 0.9MM/M6
B9876636 CONTACT TIP 1.0MM/M6
B9876637 CONTACT TIP 1.2MM/M6
4 B9580173 CONTACT TIP ADAPTER
5 B9591079 INSULATING RING
6 B4275240 LOCKING SPRING
7 B4153040 GOOSENECK 45 DEGREE
8 B4188579 LINER-STEEL 0.6-0.8MM/3M (WHITE)
B4188589 LINER-STEEL 0.9-1.2MM/3M (RED)
B4302100 LINER-DL TEFLON 0.8-1.6MM/3M AL (SILVER)
B4302730 LINER-DL TEFLON 0.8-1.0MM/3M SS (SILVER)
9 B4276270 SWIVEL SPRING
10 B4305230 HANDLE
11 B4290120 TRIGGER SWITCH
12 B4302790 RETAINING RING
NO. PART NO. DESCRIPTION 13 B3146300 CABLE SUPPORT
13 9541084 MOTOR / GEARBOX WIRE FEEDER 14 B9770456 TRIGGER PLUG
14 9542001 CHASSIS WIRE FEEDER 15 B4291250 GAS HOSE NIPPLE
15 9592110 FASTENING SCREW M4 FEED ROLLER 16 B4290960 CONNECTION BLOCK
34
16 9542004 REAR GUIDE TUBE COOP 17 B4290970 TAPERED POSITIONING NUT (TLP)

8 BOC MIG 170P/190C Welding Machine BOC MIG 170P/190C Welding Machine 9
 Parts DetailsDetails
Component Wirefeeder
Wirefeeder Troubleshooting BOC MIG 170P/190C
General Maintenance
WIRE. PART NO. DIAMETER Maintenance of a BOC MIG power source will normally consist of general cleaning of the unit with a soft brush and a vacuum
FE SS MC FC AL B9542004 0.6-1.2MM cleaner, and checking of wearing for parts like switches, connectors, potentiometers and fuses.

NOTE: If you use compressed air for cleaning, there is a risk that dirt is packed even more tightly into gaps of connectors and com-
ponents, so be careful with those parts!

Maintenance of the wire feeder and MIG torch will normally consist of general cleaning and changing of consumable parts such as
the contact tip, the contact tip adapter, the gas nozzle, the wire conduit, feeding rolls, guide tubes and the gear wheel.

The number of machines in stock will determine to what extent consumable and spare parts will be stocked.

WARNING
Watch out for the mains voltage! Disconnect the power source from the mains voltage before removing cover plates or
any testing or measurement and before troubleshooting, look for signs for over-heating, fractures and damages from
internal components and power semiconductors.

Fault Description Possible Cause Solution

The welding quality is poor: a. One phase is missing from the input a. Check all phases from the terminal
- The arc is not stable power supply block. Change the mains fuse
- There is increased spatter b. There is a lack of shielding gas or the if required or tighten the mains
- The arc start is poor wrong type of gas is being used cable
- There is not enough arc c. The gas hose of the torch is leaking b. Check the operation of the
current or the connection is loose solenoid valve
d. The on/off switch or the contactor is c. Check and repair the MIG torch, or
faulty replace if required
e. The main transformer is faulty d. Measure the output of the on/
f. There is a broken diode in the off switch. If it is OK, check the
rectifier contactor
e. Check that the voltages are
symmetrical on the secondary of
the main transformer. The voltage
value depends on the machine
type and the settings of the step
switches
f. Check and replace the rectifier if
required

The welding stops a. The switch on the MIG torch is faulty a. Check and replace the switch if
intermittently or there are b. The connection in the control wires required
some occasional disturbances of the torch or in the connector block b. Check the control wires and the
WIRE FEED ROLL TYPE 0.6MM/0.8MM 0.9-1.0MM/1.2MM 1.4M/1.6MM during welding are faulty connectors and repair if required
FE SS PLAIN B9483070 B9483070 -
FC KNURLED B9483073 B9483073 -
The machine is overheating a. The fan or the control board is faulty a. Check the 24V DC voltage from the
AL U-GROOVE - - B9483072 because the fan does not start fan connector X3/3 and X3/4. If it
is OK, replace the fan. If it is not,
replace the control board

The wire feed unit does not a. The 8amp fuse has blown a. Replace the 8amp fuse. If the fuse
work b. The motor is faulty burns once more, the control board
c. The control voltages for the control is faulty
board are inactive b. Check the control voltage (max. c
24V DC) for the motor and connec-
tors X4/12 - X4/13 on the control
board. If the control voltage is cor-
rect, the control board is in order.
Replace the motor
c. Check the voltages, connectors
X3/2 - X3/8 and X3/10 - X3/9 on
the control board. If the voltages
are incorrect, the transformer is
faulty

10 BOC MIG 170P/190C Welding Machine BOC MIG 170P/190C Welding Machine 11
 Troubleshooting BOC MIG 170P/190C Parts List BOC MIG 170P
Fault Description Possible Cause Solution
NO. PART NO. DESCRIPTION
The solenoid valve is inactive a. The solenoid valve or the control a. Check the 24V DC from the
INTERNAL
board is faulty connector X3/5 and X3/6. Replace
the control board or solenoid valve 1 4292610 CONTROL BOARD FOR SERIAL NUMBERS UP TO 1222675
1.1 SP000437 CONTROL BOARD FOR SERIAL NUMBERS OVER 1222675
1.2 9772526 FUSE 8A (NOT SHOWN)
The wire feed speed set value a. The potentiometer is faulty a. Check and replace the 10K_ set
2 9755671 CAPACITOR
cannot be adjusted value potentiometer if required
3 4292420 INSULATION / CAPACITOR
4 9750158 RECTIFIER
5 3144920 CHOKE
6 954421501 COOLING FAN
7 9754141 POTENTIOMETER WIRE FEED (NOT SHOWN)
8 4291990 PTC RESISTOR
9 3145410 TRANSFORMER
10 956300201 SOLENOID VALVE
11 9568911 HOSE CONNECTOR INTERNAL TO SOLENOID (NOT SHOWN)
12 9370157 HOSE
WIRE FEED
13 9541084 MOTOR / GEARBOX WIRE FEEDER
14 9542001 CHASSIS WIRE FEEDER
15 9592110 FASTENING SCREW M4 FEED ROLLER
16 9542004 REAR GUIDE TUBE COOP
17 4289880 WIRE HUB KIT (ITEMS 18-25)
18 2062070 HUB FOR WIRE REEL
19 3133500 CLAMP
20 4267970 BRAKE PIECE
21 4267560 WASHER D 47/17
22 9420116 WASHER M16 DIN 125 A ZN
23 4270940 PRESS SPRING
24 9425216 WASHER D16
25 4265820 CLAMPING UNIT M16
PANELS
26 3145440 SIDE PLATE RIGHT
27 3145430 DOOR PLATE
28 9549064 SLIDE LOCK
29 2062900 PLASTIC HANDLE
CONTROLS
30 9775728 THERMAL OVERLOAD LIGHT
31 9761221 ON/OFF SWITCH
32 9759111 KNOB D36 WIRE SPEED
33 9760313 VOLTAGE SWITCH
34 9771509 MACHINE SOCKET DIX 25
35 9568913 HOSE CONNECTOR
CABLES & CLAMPS
36 BOC10101 WORK CLAMP
38 7901220 WORK LEAD 16 MM2 3M
39 9791650 TORCH INLET RING

12 BOC MIG 170P/190C Welding Machine BOC MIG 170P/190C Welding Machine 13
 Parts List BOC MIG 190C
NO. PART NO. DESCRIPTION
INTERNAL
1 4292610 CONTROL BOARD
1.1 9772526 FUSE 8A (NOT SHOWN)
2 9755671 CAPACITOR
3 4292420 INSULATION / CAPACITOR
4 9750157 RECTIFIER
5 4291990 PTC RESISTOR
6 3144920 CHOKE
7 954421501 COOLING FAN
8 9754141 POTENTIOMETER WIRE FEED & TIMER (NOT SHOWN)
9 3145410 TRANSFORMER
10 956300201 SOLENOID VALVE
11 9568911 HOSE CONNECTOR INTERNAL TO SOLENOID (NOT SHOWN)
12 9370157 PLASTIC HOSE 5/8,2
WIRE FEED
13 9541084 MOTOR / GEARBOX WIRE FEEDER
14 9542001 CHASSIS WIRE FEEDER
15 9592110 FASTENING SCREW M4 FEED ROLLER
16 9542004 REAR GUIDE TUBE COOP
17 4289880 WIRE HUB KIT (ITEMS 18-25)
18 2062070 HUB FOR WIRE REEL
19 3133500 CLAMP
20 4267970 BRAKE PIECE
21 4267560 WASHER D 47/17
22 9420116 WASHER M16 DIN 125 A ZN
23 4270940 PRESS SPRING
24 9425216 WASHER D16
25 4265820 CLAMPING UNIT M16
PANELS
26 3145440 SIDE PLATE RIGHT
27 3145430 DOOR PLATE
28 9549064 SLIDE LOCK
29 2062900 HANDLE
CONTROLS
30 9775728 THERMAL OVERLOAD LIGHT
31 9761221 ON/OFF SWITCH
32 9760315 VOLTAGE SWITCH
33 9759111 KNOB D36 WIRE SPEED
34 9791650 INLET RING
35 9547105 REAR WHEEL
36 9568913 HOSE CONNECTOR
37 9547770 WHEEL, CASTOR
38 9761350 2T / SPOT / 4T SWITCH
39 9771509 MACHINE SOCKET DIX 25
CABLES & CLAMPS
40 BOC10101 WORK CLAMP
41 7901220 WORK LEAD 16 MM2
42 9425220 LOCKING RING SHAFT D 20

14 BOC MIG 170P/190C Welding Machine