18
terminals and disconnect the 208 Vac lead from the top of
the switch as shown in Fig. 3.3A. Insulate the 208 Vac
lead that was removed from the power switch with sleeving
or approved electrical tape and re-position to a safe area
beside the transformer (see Fig. 3.3B), leaving a minimum
of one inch clearance from other components and the side
panel.
Connect the proper voltage (208 Vac or 230 Vac) tap to the
power switch and tighten securely. Check all other leads
connected to the power switch for tightness and clearance
from internal components before securing the insulating
cover around the power switch. Replace the side panel.
3.2.5
Reconnecting from 575 VAC Input
Figure 3.3.1 shows you how to reconnect the "multi-
voltage" model from a 575-volt input to any of the remain-
ing available voltage inputs 200 or 380 or 400 or 460-volts.
These connections are made by unscrewing the right side
panel below the wire feeding compartment, and locating
the primary voltage changeover terminal board handing in
the center of the lower compartment. This board contains
copper links which must be reconnected to match the
silk-screened voltage designations for the input you plan
to use (it comes factory-connected for a 575-volt input),
see Figure 3.3.1.
3.3 SECONDARY OUTPUT CONNECTIONS
The Migmaster 250 Welding System is completely self-
contained so that the front panel torch fittings (Euro-type
MT and Spool gun) are internally connected to the
welding polarity (D.C. Reverse or D.C. Straight) via the
secondary output terminals located inside the wire feed-
ing compartment (see Fig. 4.1). The machine comes set
up for D.C.R.P. welding as described in Section 4.1.3.
3.4 TORCH CONNECTIONS
The torch (GUNMASTER 250), which is supplied as
standard equipment with the Migmaster 250 System, is
provided with a euro-type adapter which directly connects
to the torch fitting mounted on the front panel. Line up
matching holes, push on and tighten locking collar. As
shipped from the factory, the euro or common connector
type torches are set-up for D.C.R.P. welding polarity (see
sections 3.3 or 4.1.3). To connect the spool-on-gun torch
(ST-23A) see Section 4.2.2.
3.5 WIRE FEEDER MECHANISM
3.5.1 DRIVE ROLLS
The drive roll has two grooves: the small groove feeds
0.035 in. diameter wire, the large groove feeds 0.045 in.
wire. The groove nearest the gear motor feeds the wire.
If the required groove is not in that position:
A. Release the pressure drive roll lever and lift the
assembly upward.
B. Remove the two (2) screws holding the drive roll to
the gear.
C. Reverse the drive roll on the drive roll shaft.
D. Replace the screws and tighten.
E. Secure the pressure drive roll assembly.
Figure 3.3.1-Primary Reconnections at Voltage
Changeover Terminal Board for 208/230/380/400/460/
575Volt Models
PRIMARY VOLTAGE CONNECTION CHART
VOLTAGE
CONNECTION
NO. OF STRIPS
1 - 2
1
208
6 - 7
1
7 - 8
FLEX
1 - 2
1
230
6 - 7
1
5 - 8
FLEX
380
3 - 7
2
4 - 8
FLEX
400
2 - 6
2
7 - 8
FLEX
460
2 - 6
2
4 - 8
FLEX
575
2 - 3
2
4 - 8
FLEX
SECTION 3 INSTALLATION
Содержание MIGMASTER 250
Страница 1: ...F15 087 J 04 2003 MigMaster 250 Welding Package Instruction Manual...
Страница 4: ...4 TABLE OF CONTENTS...
Страница 22: ...22 SECTION 3 INSTALLATION...
Страница 38: ...38 Figure 5 3 Wiring Migmaster 250 for 208 230 V Model D 32861 F...
Страница 39: ...39 Figure 5 4 Wiring Migmaster 250 for 208 230 380 400 460 575 V Model D 33311 D...
Страница 40: ...40 SECTION 5 SERVICE...
Страница 52: ...52 SECTION 6 REPLACEMENT PARTS...
Страница 53: ...53 NOTES...
Страница 54: ...NOTES...
