Lincoln Electric IDEALARC DC-1500 Service Manual page 27

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WARNING
• Have an electrician install and
service this equipment.
• Turn the input power off at the
fuse box before working on
equipment.
ELECTRIC SHOCK
• Do not touch electrically hot
parts.
can kill.
GENERAL MAINTENANCE
1. The fan motors have sealed bearings which require no
service.
2. In extremely dusty locations, dirt may clog the air chan-
nels causing the welder to run hot. Blow out the welder
with low pressure air at regular intervals. Also blow dirt
out of the NL Option box.
MAINTENANCE
OVERLOAD PROTECTION
The DC-1500 has built-in protective thermostats. If the recti-
fier or transformer reaches the maximum safe operating tem-
perature because of frequent overload or high room tem-pera-
ture plus overload, the contactor drops out stopping the
welder. The thermostat automatically reset when the tem-
perature reaches a safe operating level. Press the "On" but-
ton to start the welder.
The power rectifiers are also protected by a special solid
state circuit. With the occurrence of a short circuit or ex-ces-
sively high overloads, the input contactor opens. When the
overload is removed, press the "On" button to start the
welder.
An 8 amp slow blow fuse located on the front of the machine
protects the 115 volt auxiliary AC circuit (#31 and #32) from
overload. If replacing, use the same type and size fuse.
IDEALARC® DC-1500
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