Description Of Front Panel Controls (See Section 5-1) - Red-D-Arc D502K 5+4 Technical Manual

5-2. Description Of Front Panel Controls (See Section 5-1)

Engine Starting Controls
1 Start/Preheat Switch
Use switch to start engine and operate glow
plug for cold weather starting.
Engine runs at weld/power
continuously.
Turn switch to Preheat position to operate the
glow plug and heat the combustion chambers
before cranking engine (see starting instruc-
tions following).
2 Engine Shutdown Switch
Push switch down to stop engine.
To Start:
.
If engine does not start, let engine come to
a complete stop before attempting restart.
Above 415 F (55 C): turn Start/Preheat switch
to Preheat position for 5 seconds and then turn
switch to Start position. Release Start/Preheat
switch when engine starts.
Below 415 F (55 C):
Turn Start/Preheat switch to Preheat position
for 15 seconds and then turn switch to Start.
Release Start/Preheat switch when engine
starts.
To Stop:
Push Engine Shutdown switch down to stop
engine.
3 Engine Hour Meter
Use meter to monitor engine running time for
scheduling maintenance.
Engine Gauges
.
To read gauges with engine off, turn Start/
Preheat switch to Preheat position.
D502K 5+4
4 Fuel Gauge
Use gauge to check fuel level when engine is
running.
5 Battery Ammeter
speed
Use gauge to check amperage output to the
battery. The gauge reads near 0 (zero) when
the engine is running. If gauge is at a negative
number, the battery is discharging.
Y Stop engine, and do not run engine un-
til problem is fixed.
6 Engine Temperature Gauge
Normal temperature is 170 - 205° F (77 - 96°
C). Engine stops if temperature exceeds 221°
F (105° C).
Weld Controls
7 Process/Contactor Control Switch
See Section 5-3 for Process/Contactor Con-
trol switch information.
8 Amperage Range Switch
Y Do not switch under load.
Use switch to select weld amperage range.
Use the lowest four ranges for Stick and TIG
welding. Read the upper set of numbers at
each range for Stick welding and the lower set
at each range for TIG welding.
Use the highest range for MIG welding and for
cutting and gouging (CAC-A).
For most welding applications, use lowest am-
perage range possible to help prevent arc out-
ages.
9 Voltage/Amperage Adjust Control
With Process/Contactor Control switch in any
Stick or TIG setting, use control to adjust am-
perage within range selected by Amperage
Range switch. With Process/Contactor Con-
trol switch in any MIG position, use control to
adjust voltage. With Voltage/Amperage Adjust
Control switch (item 10) in Remote position,
control limits the remote amperage in TIG
mode, but has no effect in Stick and MIG
modes.
Weld output would be about 263 A DC with
controls set as shown (50% of 125 to 400 A).
.
The numbers around the control are for
reference only and do not represent an ac-
tual percentage value.
10 Voltage/Amperage Adjust Control Switch
And Remote 14 Receptacle
Use switch to select front panel or remote volt-
age/amperage control. For remote control,
place switch in Remote position and connect
remote control to Remote 14 receptacle RC14
(see Sections 4-9 and 5-4).
11 Polarity/AC Selector Switch (Optional)
Y Do not switch under load.
Use switch to change weld output. Select ei-
ther DC Electrode Positive (DCEP) or DC
Electrode Negative (DCEN).
Weld Meters
12 DC Voltmeter (Optional)
Voltmeter displays voltage at the weld output
terminals, but not necessarily the welding arc
due to resistance of cable and connections.
13 DC Ammeter (Optional)
Ammeter displays amperage output of the unit.
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