Lincoln Electric IM663 RED-D-ARC D300K 3+3 - Manual (Page 15)

Range Selector” to the 190-120 position and then
adjust the “Fine Current Adjustment” for 175 amps.
When a forceful “digging” arc is required, usually for
vertical and overhead welding, use a higher “Current
Range Selector” setting and lower open circuit volt-
age. For example: to obtain 175 amps and a forceful
arc, set the “Current Range Selector” to the 240-160
position and the “Fine Current Adjustment” setting to
get 175 amps.
Some arc instability may be experienced with EXX10
electrodes when trying to operate with long arc tech-
niques at settings at the lower end of the open circuit
voltage range.
DO NOT attempt to set the “Current Range Selector”
between the five points designated on the nameplate.
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These switches have a spring loaded cam which
almost eliminates the possibility of setting this switch
between the designated points.
Auxiliary Power
The AC auxiliary power, supplied as standard, has a
rating of 3.0 kVA of 120 VAC (60 hertz).
With the 3.0 kVA, 120 VAC auxiliary power for Code
10567, one 120V duplex grounding type receptacle is
provided. The circuit is protected with circuit breakers.
Codes 10956, 11214, 11488, 11549 and 12186 uses
one GFCI with breaker.
The rating of 3.0 kVA permits a maximum continuous
current of 26 amps that can be drawn from the 120
volt duplex receptacle. The 120 volt duplex receptacle
or GFCI has a configuration which permits 20 amps to
be drawn from either half. The total combined load of
the duplex receptacle or GFCI is not to exceed 3.0
kVA.
If a GFCI receptacle is tripped, See the MAINTE-
NANCE section for detailed information on testing and
resetting the GFCI receptacle.
B-3 OPERATION B-3
CAUTION
D300K 3+3
If auxiliary power is used simultaneously with weld-
ing, the current which can be used while maintaining
voltage regulation within 10% is as follows:
Welding Using Total
Current Amps 120V Auxiliary
(@ NEMA Circuit, Amps KVA
Arc Volts)
0 26 3.0
100 16 1.8
150 15 1.7
200 15 1.7
250 14 1.6