General Failure; Over Temperature; Maintenance - JAVAC NBM-500L Manual

Figure 19
Resetting
Reset factory values as follows:
• Adjust the ENCODER knob and turn to "Settings" then
press the ENCODER key to access setting page.
• Adjust the ENCODER knob and select the "Factory reset"
option, then press the ENCODER key to reset the system.
NOTE: The special parameters of all the welding programs
are returned to their factory settings and the data in memory
are cleared.
Date & Time
Set time values as follows:
• Adjust the ENCODER knob and turn to "Settings" then
press the ENCODER key to access setting page.
• Adjust the ENCODER knob and select the "Date&Time"
option, then press the ENCODER key to set the date and
time.
Control mode
Set control mode as follows:
• Adjust the ENCODER knob and turn to "Settings" then
press the ENCODER key to access setting page.
• Adjust the ENCODER knob and select the "Control mode"
option, then press the ENCODER key to set the Control
mode.
Panel mode - In this mode, set the welding current and
welding voltage by the panel of main engine;
Remote mode - In this mode, set the welding current and
welding voltage by the panel of wire feeder;

Maintenance

NBM-500L
WARNING: It is very important to remove all dust sucked
into the machine by the fans, as the welders are completely
electronic.
Proceed as described to keep the machine in good working
order:
• Periodic removal of accumulated dirt and dust from the in-
side of the device, using compressed air. Do not aim the
air jet directly onto the electrical components, in order to
avoid damaging them.
• Make periodical inspections in order to individuate worn ca-
bles or loose connections that are the cause of overheat-
ing.
TORCH
The torch is subjected to high temperatures and is also
stressed by traction and torsion. We recommend not to twist
the wire and not to use the torch to pull the welder. As a result
of the above the torch will require frequent maintenance
such as:
• cleaning welding splashes from the gas diffuser so that the
gas flows freely;
• substitution of the contact point when the hole is deformed;
• cleaning of the wire guide liner using trichloroethylene or
specific solvents;
• check of the insulation and connections of the power ca-
ble;
• The connections must be in good electrical and mechan-
ical condition.
Alarm conditions
Alarm conditions found in the welder are described in this
paragraph and the screen on the operator's interface used to
view them:

GENERAL FAILURE:

There is an inside fault. The machine needs to be restarted.
(Fig. 20)
Figure 20

OVER TEMPERATURE:

The temperature exceeds the limits. (Fig. 21)
Figure 21