Daihen OTC Welbee Inverter W400, Owner'S Manual

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D
AILY
I
NSPECTION
M
AINTENANCE AND
I
NSPECTION
C
HAPTER
8
8-2
To prevent damage and problem of the welding power source and loss of the data, ensure to follow the
instructions below:
8.2 Daily Inspection
This section explains the daily inspection of the welding power source. Perform daily inspection for the
following items in the table.
Front and rear panel of the welding power source is made from polycarbonate resin. To prevent from
electric shock or fire caused by the damage on polycarbonate resin, ensure to follow the instructions
below.
• The welding conditions (electronic data) stored by this function are susceptible to
occurrence of static electricity, impact, repair, etc., and there is a possibility that the
stored contents may be changed or lost. Important information should also be stored
as printed document.
Please note that OTC will not be liable for any alteration or loss of electronic
information.
• When cleaning the welding power source, do not expose the cooling fan directly to
compressed air.
Otherwise powder dust may get inside the cooling fan. Also the cooling fan may rotate
at high speed due to compressed air, resulting in wearing of the bearing.
• When using a vacuum cleaner to remove powder dust accumulating on the welding
power source, do not vacuum between the rotating part of cooling fan and the main
body.
Otherwise lubricant of the bearing of cooling fan may also be removed, resulting in
failure or shorter service life of the cooling fan.
• Before performing daily inspection, refer to " 8.1
-
Precautions for Maintenance and
Inspection.
• If there is dirt on plastic parts, soak a soft cloth in water, alcohol or neutral detergent,
wring it well and wipe off the dirt.
Do not use organic detergent or chemical agent. Doing so may cause crack (breaking)
and degrade the strength.
• If there is any abnormality in the plastic parts such as front and rear panels,
immediately stop the use and contact your dealer.
Daily inspection item Content
Status of the grounding cable
• Check that the grounding terminal on the back of the welding power source is
securely grounded. (If it is not grounded, electric shock/failure/malfunction may
occur.)
Status of cables
(Primary power cable for facility side,
cables for base metal side/torch side,
torch cable, voltage detection cable,
etc.)
• Check that there is no abnormal heat generation in cable connections.
• Check that cable connections are not loose.
• Check that there is no problem in the insulation method between the cables and
base metal.
• Check that cables are not cut or damaged.