Master Lock MGH3000PR - Manual (Page 6)

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PORTABLE GASOLINE GENERATORS
R
120/240 VOLT Position
120 VOLT ONLY Position
Figure 3 - Full Power Selector Switch
GENERATOR
FEATURES
OIL ALERT SYSTEM
The oil alert system protects the engine from
low oil damage. This system automatically
shuts down the engine and prevents engine
restarting if the oil level falls too low.
Note: When this happens, the engine switch
remains in the ON position. The oil alert
system is wired into the ON/OFF Switch.
If this system shuts down the engine, the
engine will not start until you add oil. Add
oil to engine (see Engine Oil, page 7).
Note: Operate generator on a level surface.
If not level, the oil may flow away from the
oil level sensing device. This will cause the
oil alert system to shut down engine.
See engine owner’s manual for more
information.
Selector
Full Power
120 V
ONLY 120/
240V
Selector
Full Power
120 V
ONLY 120/
240V
HONDA
OFF
ON
START
ENGINE SW
CIRCUIT
BREAKER
ENGINE SW
ON
OFF
Models HWI3000,
MGH3000, MGH4000C,
MGH4000CI, MGH5000C,
MGH5000CI, MGH6000C,
and MGH6000CI
Models MGH5000CIE,
MGH7000C, MGH7000CI,
and MGH10000
Figure 2 - Engine Switch Location
FULL POWER SELECTOR
SWITCH
All models except HWI3000, MGH3000,
MGH3000PR, MGH7000C, MGH7000CI,
and MGH10000 have a full power selector
switch on the control panel. The switch has
two positions: 120 VOLT ONLY, and 120/
240 VOLT.
120 VOLT ONLY: This position sends full
power to the 120V receptacles only. 240V
power is not available. Use this position
when powering 120V items only.
120/240 VOLT: This position sends full
power to the 120/240V receptacle. It also
powers the 120V receptacles at reduced
wattage capacity.
Model
MGH3000PR
IMPORTANT: Do not move the full power
selector switch while powering electrical
items. Unplug all items before moving switch.
Failure to do so can damage switch. Models
HWI3000, MGH3000, MGH3000PR,
MGH7000C, MGH7000CI, and MGH10000
do not have this switch. These models pro-
vide full power to all receptacles.
ELECTRIC START
(Models MGH5000CIE,
MGH7000C, MGH7000CI, and
MGH10000)
Models MGH5000CIE, MGH7000C,
MGH7000CI, and MGH10000 have elec-
tric starters. A battery is not supplied with
generator. You must provide a 12-volt, 32-
amp-hour battery. For more battery infor-
mation, see Battery, page 7.
GROUND FAULT CIRCUIT
INTERRUPTER RECEPTACLE
All models (Except HWI3000) have a 120-
volt ground fault circuit interrupter (GFCI)
receptacle. The GFCI receptacle is on the
control panel or top cover of alternator (model
MGH3000 and MGH3000PR only). The
GFCI protects you against hazardous electri-
cal shock caused when your body becomes a
path through which electricity travels to reach
ground. This could happen when you touch an
appliance or cord that is ‘live’ through faulty
mechanism, damp or worn insulation, etc.
When protected by the GFCI, you may still
feel a shock, but the GFCI should cut it off
quickly. A person in normal health should
not receive serious injury.
Note: Infants and
very small children may still be affected.
Test Procedure
Check the GFCI receptacle every month.
This insures it is working right.
1. Push black TEST button. Red RESET
button should pop out. This should trip
GFCI, resulting in no electrical power
at receptacle. Verify this by plugging
test lamp with good bulb into recep-
tacle. If lamp does not work, GFCI re-
ceptacle is good.
2. If the GFCI receptacle tests okay, restore
power by pushing the RESET button
back in. The test lamp should work at
this time
. IMPORTANT: You must press
the RESET button firmly and fully. It
should lock into place. If the GFCI does
not lock into place, do not use receptacle.
Contact a qualified electrician for repairs.
WARNING: If RESET button
does not pop out, do not use the
GFCI receptacle. Contact a quali-
fied electrician for repairs.