Lincoln Electric INVERTEC V200-T - Manual (Page 20)

D-1 MAINTENANCE D-1
INVERTEC V200-T
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Have an electrician install and ser-
vice this equipment.
• Turn the input power off at the fuse
box, disconnect supply lines and
allow machine to sit for five minutes
minimum to allow the power capaci-
tors to discharge before working
inside this equipment.
• Do not touch electrically hot parts.
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INPUT FILTER CAPACITOR
DISCHARGE PROCEDURE
The machine has internal capacitors which are
charged to a high voltage during power-on conditions.
This voltage is dangerous and must be discharged
before the machine can be serviced. Discharging is
done automatically by the machine each time the
power is switched off. However, you must allow the
machine to sit for at least 5 minutes to allow time for
the process to take place.
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ROUTINE MAINTENANCE
1. Perform the following preventive maintenance
procedures at least once every thousand hours of
use. It is good practice to keep a preventive main-
tenance record; a record tag attached to the
machine works best.
2. Remove the machine cover (requires a 3 mm hex
key) after allowing the minimum 5 minute power
off requirement to let the input capacitors dis-
charge.
Failure to observe this discharge time requirement
could result in severe electrical shock hazard.
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3. Keeping the machine clean will result in cooler
operation and higher reliability. Be sure to clean
the following areas with a low pressure air
stream.
• Printed circuit boards
• Power switch
• Fan blades
• Louvers
• Heat sink fins
• Output terminals
4. Examine capacitors for leakage or oozing. If any
leakage is noticed, take the unit to an authorized
Lincoln Field Service Shop.
5. Examine the case for breakage. Repair or
replace the case as required. Keep the case in
good condition to ensure that high voltage parts
are protected and correct spacings are main-
tained.
6. Install machine covers and fasteners.
REPLACEMENT OF INTERNAL
FUSE
The Invertec has additional protection provided to
some circuits through an internal fuse. For replace-
ment of that fuse proceed as follows:
1. Turn off the power to the unit and remove the
input plug.
2. Allow the machine to stand for 5 minutes to let
the input capacitors discharge.
3. Remove the machine cover.
4. Replace the blown fuse with a new 0.5A 500V
slowblow fuse.
NOTE: If the fuse blows again after power is restored,
the cause could be an internal breakdown in
the power unit. In this case, take the unit to an
authorized Lincoln Field Service Shop.
WARNING
WARNING
WARNING