CHOWEL WELCOM-250Y, Maintenance Manual

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WELCOM-250Y, Z MAINTENANCE MANUAL
CHOWEL
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CAUTION
1. Turn electrical power OFF before changing the tap switch at the weld
transformer.
In the case failure to follow the instruction like a welding at changing the tap
switch can lead to injury to personnel.
2. Turn stop cock OFF before some piping work.
In the case failure to follow the instruction like the electrical circuit is splashed
with cooling water can lead to control damage.
CAUTION
Magnetic fields
It should be borne in mind that welding machine generates intense magnetic fields.
Consequently, “Do not approach the secondary circuit” of the machine carrying on
your person any article that are likely to suffer damage.
These include the following:
-
Any kind of magnetic card or badge, for example credit card, bank card,
magnetic strip telephone card, personal recognition cards, magnetic clocking-on
cards, company permits, passes, etc.
-
Any kind of magnetic tape or media, for example cassette, video cassette, floppy
disk, etc.
-
Any kind of delicate mechanism, for example electronic calculators, cameras,
motion picture cameras, television cameras, watches (especially mechanically
driven ones).
RISK OF ELECTRIC SHOCK
It shows readers where people will be struck by an electric
shock if procedures are not followed properly.