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BLW-400SSW-WELDER/AC GENERATOR— PARTS & OPERATION MANUAL— REV. #1 (06/15/01) — PAGE 11
BLW-400SSW — GENERAL INFORMATION
BLW-400SSW FAMILIARIZATION
Generator
The MQ Power Model BLW-400 welder/AC generator can
provide 400 amps of welding current with a single operator
or 200 amps of welding current simultaneously with two
operators. When used as a welder/AC generator it can
provide a maximum of 6,000 watts of power.
Control Panel
The
control panel
is provided with the following:
!
One GFCI 120 volt receptacle, 20 amp
!
One 120 volt receptacle, 30 amp
!
One 120/240 volt receptacle, 30 amp
!
Main Circuit Breaker 265V @25 amps
!
Circuit Protector Breaker (GFCI) 120V @20 amps
!
Idle Control Switch
!
Starter Switch
!
Warning Lamp Unit
!
Hour Meter
!
Ground Terminal
Engine Protection System
Engine protection fail safe features are provided in the event
of low oil pressure, high coolant temperature and failure of
the battery to charge. If any of the above conditions occur
while operating the welder/AC generator, it will cause a
complete unit shut down.
Battery Charge Indicator
This unit is equipped with a protective device that signals
an indicator and automatically stops the engine when the
battery cannot be charged by the alternator.
Water Temperature Indicator
This unit is equipped with an apparatus that signals an
indicator and automatically stops the engine when the cooling
water temperature becomes abnormally high. This apparatus
will not function properly if the machine is operated with
less than the proper amount of coolant.
Oil Pressure Warning Indicator
If low oil pressure is detected while operating the welder/AC
generator, the engine protection system will shut down the
engine.
If this condition (low oil pressure) should occur, please refer
to the engine troubleshooting table (page 44) in this manual.
Excitation System
The BLW-400SSW Welder/AC generator uses a brushless
exciter to create rated output electricity. This system will
use the mechanical energy generated by the 3600 RPM
engine to spin the rotor (or armature) inside the welder/AC
generator (or alternator end).
The motion created by the rotor (which holds copper coils)
spins inside a housing of permanent magnets called the
"STATOR". A magnetic field is created by the stator and
produces an electrical current.
Engine
The BLW-400SSW is powered by a 4-cycle KUBOTA
diesel
engine. This engine is designed to meet every performance
requirement for welder/AC generator. Reference Table 1, page
10 for engine specifications.
In keeping with MQ Power's policy of constantly improving
its products, the specifications quoted herein are subject to
change without prior notice.
Idle Control Switch
The BLW-400SSW Welder/AC generator is provided with an
automatic idle (engine) control capability for noise
suppression and fuel cost reduction. The automatic idle
control feature automatically engages under a no-load
condition.
When the Idle Control Switch is placed in the “ON” position,
the engine revolutions will be approximately 2200 rpm (low-
speed operation). When a load is connected to one of the
output receptacles, the engine speed will a ut om at i ca l ly
increase to about 3600 rpm (high-speed operation) within 10
seconds. Conversely, when the load is removed, the engine
speed will automatically drop back down to 2200 rpm within
10 seconds.
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