TOC

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D-2

MAINTENANCE

D-2

SAFETY PRECAUTIONS

 

WARNING

WARNING

 

 

 

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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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Do not open this machine and do not introduce any- thing into its openings. Power supply must be discon- nected from the machine before each maintenance and service. After each repair, perform proper tests to ensure safety.

CAUTION

Power supply must be disconnected from the machine before each maintenance and service. Always use gloves in compliance with the safety standards.

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INPUT FILTER CAPACITOR

DISCHARGE PROCEDURE

WARNING

For any maintenance or repair operations it is recom- mended to contact the nearest technical service center or Lincoln Electric. Maintenance or repairs performed by unauthorized service centers or personnel will null and void the manufacturers warranty.

WARNING

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

The frequency of the maintenance operations may vary in accordance with the working environment. Any noticeable damage should be reported immediately.

Check cables and connections integrity. Replace, if necessary.

Clean the power source inside by means of low - pressure compressed air.

Keep the machine clean. Use a soft dry cloth to clean the external case, especially the airflow inlet / outlet louvers.

THERMAL PROTECTION

The V155-S has a thermal,protective device (PTC) on the Output Rectifier to protect against excessive durty cycle. It also has an auto resetting fuse (ARFU) on the Input Board to protect against incorrect line voltage when connectecd to 120VAC. If either device opens, the Thermal LED on the front panel will turn ON. See the Operarion Section or the Troubleshooting Section of this manual for corrective action.

INVERTEC® V155-S

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Lincoln Electric V155-S Input Filter Capacitor Discharge Procedure, Thermal Protection, Routine Maintenance