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If the oil pressure gauge does not show normal oil
pressure (207/414kPa) 10 seconds after starting,
stop the engine and consult the engine instruction
manual.
WARNING
Failure to return the key switch to "R" position, or
turning to "Hs" position while engine is running will
cause electrical component damage.
OUTPUT CHARACTERISTICS
This machine generates both constant voltage and
variable voltage output. Variable voltage is always used
for stick electrode welding and sometimes for
submerged arc welding. Constant voltage is always used
for Innershield
®
and other open arc welding processes,
and is usually preferred for submerged arc welding with
small wires.
PORTABLE FIELD CONTROL CONNECTION
A 'Portable Field Control' complete with 7.6m leads is
shipped with each SAM welder.
A 'Portable Field Control' is not required for proper
operation of the SAM welder when connected to an LN-
23P, LN-8 or LN-9 semi-automatic or NA-3, LT-7 or NA-5
fully automatic wire feeder. With other wire feeders and
when stick electrode welding, the 'Portable Field Control'
must be installed or the SAM cannot produce its full
open circuit voltage.
When installed the 'Portable Field Control' is a fine
voltage adjustment when using the SAM as a constant
voltage power source. It is a fine current adjustment when
using the SAM as a variable voltage power source.
The 'Portable Field Control' can be mounted on the SAM
or wherever convenient for the welding operation. When
using an LN-7, LN-25, LN-21 or LN-22 wire feeder, the
control should normally be mounted on the wire feeder.
Connect the 'Portable Field Control' leads to #75 and
#76 on the SAM terminal strip. Connect the green lead of
the 'Portable Field Control' to the grounding stud marked
with the symbol
located next to the terminal strip.
OUTPUT CONNECTIONS
(Also see visual presentation of control setting instructions on pages 12 and 13)
AUXILIARY POWER
Both 240V. and 115V., 60Hz. AC are available from
outlets below the nameplate. Be careful not to overload
these circuits. Maximum total current draw is 15 amps
from both outlets - i.e. if drawing 10 amps of 240V. power,
only 5 amps of 115V. power may be used.
The alternator is protected by thermostats and fuses.
See "Trouble Shooting" for information on the effects of
these protective devices.
Important: The Shield-Arc SAM-400 auxiliary power
circuits are not connected to the welder frame, and
earth leakage protection is not required (refer
AS2790-1989, Clause 6.1.9(a) and Comment 1),
however connected equipment should be double
IMA 523D
WELDER CONNECTION AND OPERATION
CONTROL SETTINGS
Shield-Arc SAM-400
TO STOP THE ENGINE
Turn the key switch to "O" position. The engine speed
has been pre-set in the factory for optimum welder
performance and the fuel pump and governor then
sealed. This setting should not be altered, to do so will
void the warranty. For normal running, lubricating and
maintenance instructions, consult the engine instruction
manual. For correct cooling air flow, the welder should be
operated with the doors closed.
(a) for Stick Electrode Welding
1. Connect the electrode cable to the 'Stick' stud and
the work cable to the 'To Work' stud.
2. Install the 'Portable Field Control'.
(b) LN-7, LN-8, LN-9, LN-21, LN-22, LN-25, LN-23P, NA-
3, NA-5 and LT-7 Wire Feeders
1. Make the connections exactly as specified on the
connection wiring diagram on pages 8 & 9, or as
included in the Wire Feeder Instruction Manual.
2. Install the 'Portable Field Control' (LN-7, -21, -22
and -25 only).
3. Be sure the wire feeder is properly set for constant
or variable voltage as appropriate.
(c) Other Wire Feeders
This power source can be used with other Lincoln
wire feeders and wire feeders manufactured by other
companies. The connection must be determined by
the customer for the specific equipment being used.
115V AC & 42VAC auxiliary power are available for
wire feeder operation from 31 and 32 and 32 & 41
respectively on the SAM terminal strip. To operate the
SAM contactor, connect the appropriate wire feeder
control circuit to close the circuit from #2 to #4 on the
terminal strip.
insulated, or fitted with an effective earth wire. Do
not use equipment connected to the auxiliary power
outlets while the machine is also supplying welding
current.
WARNING
Notwithstanding the above, should a residual
current device (RCD) be fitted to the machine, it is
imperative that the frame of the machine be
earthed in accordance with AS3000, Clause 5.6. An
effective earth is essential for the safe operation of
machines fitted with RCD devices.
Page 7
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