Lincoln Electric IM318 IDEALARC DC1500 - Manual (Page 16)

D-1 MAINTENANCE D-1
IDEALARC ® DC-1500
GENERAL MAINTENANCE
1. The fan motors have sealed bearings which require
no service.
2. In extremely dusty locations, dirt may clog the air
channels causing the welder to run hot. Blow out
the welder with low pressure air at regular inter-
vals. Also blow dirt out of the NL Option box.
OVERLOAD PROTECTION
The DC-1500 has built-in protective thermostats. If the
rectifier or transformer reaches the maximum safe
operating temperature because of frequent overload or
high room temperature plus overload, the contactor
drops out stopping the welder. The thermostat auto-
matically reset when the temperature reaches a safe
operating level. Press the “On” button to start the
welder.
The power rectifiers are also protected by a special
solid state circuit. With the occurrence of a short cir-
cuit or excessively 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.
• Have an electrician install and
service this equipment.
• Turn the input power off at the
fuse box before working on
equipment.
• Do not touch electrically hot parts. ELECTRIC SHOCK
can kill.
WARNING