21
Installation place
Install the machine in such a way so that ventilation openings are not obstructed (forced circulation).
Do not allow aggressive steam, dust, humidity etc., inside the machine.
Connecting the machine to the supply line
Install the plug which meets standards on the feeding cable. The plug must be equipped with ground
tip, which must be connected with yellow-green cable. Prepare the receptacle which meets standards.
The receptacle must be equipped with a fuse or an automatic circuit breaker. From table 1 determine
recommended nominal of the fuse at maximum rated consumed current and rated line voltage.
Table 1
Before connecting ensure that voltage, indicated on the machine nameplate, complies with the voltage
and frequency of the mains.
Connecting welding cables
Any connection to the welding circuit must be performed when the machine is disconnected from the
supply line.
Welding cable with electrode holder
is connected to the positive pole (+) (see «Welding»).
Cable with functional terminal is connected to the negative pole (-), its other end is connected to the
piece to be welded or operating area as close to the welding seam as possible.
WARNING! Connected cables must be inserted securely in the terminals, which will
ensure good contact. Loose connections will lead to overheating, timely wear, loss
of efficiency and damage to the terminals.
Do not use welding cables of more than 5 m in length.
Never use metallic constructions which are not the part of the piece to be welded instead of cable with
functional terminal, as this will violate safety and lead to poor welding.
Welding
WARNING!
Most welding electrodes are connected to the positive pole, although some
types have to be connected to the negative pole. It i
s important to follow manufacturer’s
instructions on the package of the electrodes, as they indicate right polarity of the welding electrode as
well as the most suitable current for welding operations.
Adjust welding current according to diameter of used electrode and according to type of welding seam.
Below is the table of admissible current according to diameter of the electrode:
Electrode diameter, mm
Welding current
, А
Min
Max
1,6
25
50
Fuse nominal, A
Welding current, A
Receptacle
capacity, A
Cable section, mm
16
140
16
10
16
160
25
10-16
25
180
36
16
25
200
36
16-20
25
250
36
20-25
36
300
36
25
Summary of Contents for TWI-250 DB
Page 1: ...TWI 250 DB TWI 250 DB Inverter welding machine TWI 250 DB UA ENG RU...
Page 2: ...2 CONTENTS 1 3 2 Instruction manual English 18 3 25...
Page 3: ...3 TWI 250 DB 11 1 TWI 250 DB 220 2 2 2 1 2 1 1 2 1 2 2 1 3...
Page 5: ...5 2 2 1 10 2 2 2 5 40 2 3 3 1 3 1 1 TWI 250 DB 220 3 1 2 5 40 80 3 1 3 I 160 250 50 60 3 1 4...
Page 8: ...8 3 4 6 3 3 4 7 4 2 4 1 2 4 2 4 3 2 2...
Page 11: ...11 20 30 5 3...
Page 12: ...12 5 4 5 6 6 1 6 2 TEKHMANN 6 2 6 2 1 6 2 2...
Page 13: ...13 6 2 3 TEKHMANN 6 3 6 3 1 6 6 3 2 TEKHMANN 1 TEKHMANN 7 7 1...
Page 14: ...14 7 2 4 25 40 1 220 15 10 4 4 25 4 25 80 1 8 8 1 3 8 2 5 40 80 8 3...
Page 24: ...24 Head office Demix LLC 1A Mossakovsky str Dnipro Ukraine 49044 tel fax 38 056 375 43 16...
Page 25: ...25 TWI 250 DB 11 1 TWI 250 DB 220 2 2 2 1 2 1 1 2 1 2...
Page 27: ...27 2 2 1 10 2 2 2 5 40 2 3 3 1 3 1 1 TWI 250 DB 220 3 1 2 5 40 80 3 1 3 I 160 250 50 60...
Page 29: ...29 3 3 TWI 250 DB 1 1 1 2 3 4 5 6 7 3 4 3 4 1 IGBT 50 30...
Page 30: ...30 3 4 2 Hot start Arc force Anti stick 3 4 3 5 3 4 4 4 3 4 5 QC IGBT 3 4 6 3 3 4 7 4 2 4 1 2...
Page 32: ...32 5 4 5 3 6 2 5 5 1 3 1 6 30 55 50 75 20 45 2 40 70 60 100 30 60 2 5 50 100 70 120 40 80...
Page 33: ...33 3 2 80 140 110 160 70 130 4 120 180 140 220 100 160 5 160 250 200 270 140 240 5 2 20 30...
Page 34: ...34 5 3...
Page 35: ...35 5 4 5 6 6 1 6 2 TEKHMANN 6 2 6 2 1 6 2 2...
Page 36: ...36 6 2 3 TEKHMANN 6 3 6 3 1 6 6 3 2 TEKHMANN 1 TEKHMANN 7 7 1...
Page 37: ...37 7 2 4 25 40 1 220 15 10 4 4 25 4 25 80 1 8 8 1 3 8 2...
