WELD THE WORLD
Cod. 006.0001.2000
19/07/2018 V.2.0
Discovery 221AC/DC Evo
Discovery 300AC/DC Evo
19
ENGLISH
7 ALARM MANAGEMENT
STOP
This symbol is shown if an incorrect operating condition occurs.
An alarm message appears on the following display:
D1.
Tab. 2 - Alarm messages
MESSAGE
MEANING
EVENT
CHECKS
E33
T E R M I C
ALARM
Overheating alarm
Indicates tripping of the welding
power source thermal protection.
Leave the unit running so that the
overheated components cool as
rapidly as possible.
When the unit has cooled, the
welding power source will reset
automatically.
All functions disabled.
Exceptions:
• Cooling fan.
•
Cooler (if switched on).
•
Make sure that the power re
-
quired by the welding process is
lower than the maximum rated
power output.
• Check that the operating con-
ditions are in compliance with
the welding power source data
plate specifications.
• Check for the presence of ade-
quate air circulation around the
welding power source.
Phase missing alarm
Indicates the absence of a phase
in the power supply line.
The message appears at the
same time as the mains protection
activation LED switches on.
All functions disabled.
Exceptions:
• Cooling fan.
•
Check if the equipment power
supply line has all the phases.
If the problem persists:
•
qualified technical personnel
are required for repair/mainte-
nance jobs.
E50
C O O L I N G
ALARM
Cooler alarm
Indicates insufficient pressure in
the torch liquid cooling circuit.
All functions disabled.
Exceptions
:
• Cooling fan.
The alarm message persists on
the display until the first operation
is performed on the user interface.
Signalling of the alarm depends
on the following settings:
•
Coo = on: the alarm is signalled
if the cooling unit is connected
to the power source and if it is
running.
•
Coo = oFF: the alarm is never
signalled, irrespective of the cir
-
cumstances.
•
Coo = Aut: the alarm is signalled
if the cooling unit is connected
to the power source and if it is
running.
• Check that the connection to
the cooler is correct.
•
Check that the "O/I" switch is
set to "I" and that it illuminates
when the pump is running.
•
Check that the cooler is filled
with coolant.
• Check that the cooling circuit
is liquid tight, notably the torch
hoses, the fuse and the internal
connections of the cooler.
Antwerpsesteenweg 949 9041 Gent - Oostakker
[email protected]
www.welda.be
T
+32 (0)9 355 74 26
F
+32 (0)9 355 92 01
