Red-D-Arc EXTREME 360, Техническое руководство

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Always check unit before applying power (see Sections 6-1 thru 6-18).
TM-229 409 Page 36 Extreme 360
6-22. Voltmeter/Ammeter Diagnostics
.
All directions are in reference to the front
of the unit. All circuitry referred to is lo-
cated inside the unit.
1 Help 1 Display
Indicates a malfunction in the primary power
circuit caused by an overcurrent condition in
the primary IGBT switching circuit. If this dis-
play is shown, complete the Pre-Power Flow-
chart in Section 6-2.
2
Help 2 Display
Indicates a malfunction in the thermal protec-
tion circuit. The unit has detected a shorted or
open thermistor. If this display is shown, verify
thermistors RT-1 and RT-2 are plugged into
circuit board PC1 and check thermistor input
values on circuit board PC3 (see Section
6-29).
3 Help 3 Display
Indicates the left side of the unit has over-
heated. The unit has shut down to allow the
fan to cool it (see Section 2-3). Operation will
continue when the unit has cooled.
4 Help 5 Display
Indicates the right side of the unit has over-
heated. The unit has shut down to allow the
fan to cool it (see Section 2-3). Operation will
continue when the unit has cooled.
5 Help 6 Display
Indicates operation at maximum input current.
The unit has a maximum allowable input cur-
rent limit. As the line voltage decreases, the
required input current increases. If the line
voltage is too low, the output power is limited
by the input current. When this limit is
reached, the unit automatically reduces out-
put power to continue operation. If this display
is shown, have a qualified electrician check
the input voltage.
6 Help 8 Display
Indicates a malfunction in the secondary pow-
er circuit of the unit. The unit has detected a
high open circuit voltage condition. If this dis-
play is shown, complete the Pre-Power Flow-
chart in Section 6-2, Check for proper connec-
tion of bypass capacitors C6 and C7 (see
Figure 8-2). Check operation of control relay
CR1 (see Section 6-24).
1
A V
2
A V
HE.L P − 1
HE.L P − 2
3
A V
HE.L P − 3
4
A V
5
A V
HE.L P − 5
HE.L P − 6
6
A V
HE.L P − 8