Lincoln Electric IM528-B ユーザーズマニュアル

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2

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Users should familiarize themselves with Figure 8,
Rear Connections, in the Operating Section of this
manual before proceeding.

The TIG Module can be mounted in or carried to any
convenient location.  It is designed to be portable.  If
placed on the roof of engine welders, it must be
mounted securely.  A Docking Kit option is available
for this purpose.  See the Accessories section.

This accessory qualifies for an IP23 rating.  It is suited
for use in damp, dirty and dusty locations.  (In
locations where there are large amounts of conductive
metal or salt particles in the air, additional
maintenance may be required.)  It is protected against
rainfall.  Excessive moisture can, however, cause
short term operational difficulties.  Difficulties can
occur with the spark gap; it may not 

“

spark

”

 when the

unit is first turned on after prolonged exposure to
moisture.  Usually, allowing the unit to operate for 5 to
15 minutes will allow the spark gap to dry out, and
return to normal operation.

Since the spark gap oscillator in the TIG Module is
similar to a radio transmitter, improper installation can
result in radio and TV interference or problems with
nearby electronic  equipment.

Radiated interference can develop in the following
four ways:
1.  Direct interference radiated from the welder and

the TIG Module.

•

2.  Direct interference radiated from the welding leads.

3.  Direct interference radiated from feedback into the

power lines.

4. Interference from reradiation of 

“

pickup

”

 by

ungrounded metallic objects.

Keeping these contributing factors in mind, installing
equipment per the following instructions should
minimize problems.

1.  Keep the power source input supply lines as short

as possible and completely enclose them in rigid
metallic conduit or equivalent shielding for a
minimum distance of 50 feet (15.2 m).  There
should be good electrical contact between this
conduit and the welder.  Both ends of the conduit
should be connected to a driven ground and the
entire length should be continuous.

2.  Keep the work and electrode leads as short as

possible and as close together as possible.
Lengths should not exceed 25 feet (7.6 m).  Tape
the leads together when practical.

3.  Be sure the torch and work cable rubber coverings

are free of cuts and cracks that allow high
frequency leakage. Cables with  high natural
rubber content, such as Lincoln Stable-Arc

®

better

resist high frequency leakage than neoprene and
other synthetic rubber insulated cables.

4.  Keep the torch in good repair and all connections

tight to reduce high frequency leakage.

5.  The work terminal must be connected to a ground

within ten feet of the welder, using one of the
following methods:

a)  A metal underground water pipe in direct

contact with the earth for ten feet or more.

b)  A 3/4

”

 (19 mm) galvanized pipe or conduit

or a 5/8

”

 (16 mm) solid galvanized iron or

steel or copper rod driven at least eight
feet into the ground.

The ground should be securely made and the
grounding cable should be as short as possible using
cable of the same size as the work cable, or larger.
Grounding to the building frame electrical conduit or a
long pipe system can result in reradiation, effectively
making these members radiating antennas.

NOTE: The welder frame MUST also be grounded.

The work terminal ground does not ground
the welder frame.