ESAB Migmaster 275, Инструкция по эксплуатации

Страница: 23 / 58

23
switch (Fig. 3.3C.) to expose the 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.
When changing the input voltage connections, the
unused lead must be insulated and positioned to pre-
vent contact with any other internal components of
the machine or the machine side panel. the clearance
between the unused lead and other components must
be at least one inch (see fig. 3.3B for illustration of the
proper position). faIlure to Insulate anD posItIon
thIs leaD properlY WIll cause a serIous shocK
haZarD.
3.2.5 reconnectIng froM 575 Vac Input
Figure 3.4 & Table 3.2 shows how to reconnect the "multi-
voltage" model from a 575-volt input to each of the available
voltage inputs. These connections are made by removing
the right side panel below the wire feeding compartment,
and locating the primary voltage changeover terminal
board 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 3.4.
the terminal labeled grD is connected to the welding
machine chassis and is for ground purposes only. It
must be connected to a good electrical ground. Do not
connect a conductor from the terminal labeled grD to
any one of the l1, l2 terminals as this will result in an
electrically hot welding machine chassis.
After the panel is removed, locate the 208 Vac lead (Fig. 3.3B)
and cut the tie-wrap to remove the insulation sleeving (on
early models this lead may have been wrapped with black
electrical tape). Open the insulating cover around the power
switch (Fig. 3.3C.) to expose the terminals and disconnect
the 230 Vac lead from the top of the switch as shown in Fig.
3.3A. Insulate the 230 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.
3.2.4b connectIng for 230 Vac Input
After the panel is removed, locate the 230 Vac lead (Fig. 3.3B)
and cut the tie-wrap to remove the insulation sleeving (on
early models this lead may have been wrapped with black
electrical tape). Open the insulating cover around the power
sectIon 3 InstallatIon
fig. 3.3c - power switch connection
figure 3.3.1-primary reconnections at Voltage change-
over terminal Board for
208/230/380/400/460/575Volt Models