Generac Mobile MGG450, Руководство пользователя

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Owner’s Manual for MGG450 29
Maintenance
Pressure Settings
The operation range for the coalescing filter system and
fuel delivery system is 40 psig before entering the
regulator. Pressure less than 40 psi (276 kPa) may not
provide optimal performance.
Beyond the regulator, the system is factory set to operate
at 30 psig. To adjust the pressure setting, remove the
cover to access the adjusting screw.
Both scrubbing system filters must maintain a minimum
of 15 psi (103.4 kPa) for proper operation, not to exceed
a maximum of 150 psi (1034 kPa). The regulator will
provide internal relief to the downstream components
through the venting systems, preventing downstream
overpressure at values greater than 300 psi (2068 kPa),
but the assembly limit pressure is 300 psi (2068 kPa). Do
not exceed 300 psi (1551 kPa) fuel pressure to the 2 in.
(50.8 mm) NG/Well Gas port.
The operating range of the fuel scrubbing system is 40-
300 psi at the rail. The primary pressure regulator is
factory set to supply 30 psi to the filtration system
components. To adjust the primary pressure setting,
remove the cover to access the adjusting screw.
Pressures less than 30 psi will result in poor performance
of the filtration system and generator. The regulator
provides internal relief venting to the outside of the unit if
overpressure id detected downstream of the regulator.
The unit may continue to run in the event of the regulator
venting due to slight overpressure.
Automatic Filtration
Both filters have an automatic drain. The coalescing filter
is equipped with a float valve which will automatically
expel water from the filter. The auto water drain valve
must have a minimum of 15 psi (103.4 kPa) for the auto
discharge to operate. The drain hose at the bottom of the
filter assembly will expel fluids collected through an outlet
located at the left frame rail near the rear of the unit.
Collect and dispose of the fluids per local, state and
federal regulations.
NOTE: Drains must be inspected occasionally and
cleaned based on how dirty the fuel being scrubbed is.
Replacing the Filter
The coalescing filter is equipped with a differential
pressure indicator (DPI) located at the top of the filter
body. The DPI provides a visual indication of the
condition of the filter, indicating Dirty (red), Change
(yellow) and Clean (green). The filter should be replaced
when the indicator is in the Change position. Replace
filter as follows:
NOTE: DPI will only be accurate while the unit is
running. While the unit is turned off, the DPI will show
“green” status regardless of actual filter status.
001731
Figure 4-2. Coalescing Filter and DPI
1.
Twist off filter body.
2.
Replace old filter cartridge with new cartridge.
3.
Twist on filter body.
Air Filter Drain Inspection
Squeeze dust boot at base of air cleaner while engine is
OFF.
Air Filter Minder Inspection
Verify indicator is in the green color on the filter-minder. If
it is not, replace air filter.
NOTE: Reset filter-minder after air filter replacement.
Cold Weather Kit (if equipped)
The MGG450 is available with or without a cold weather
kit. The manufacturer recommends installing the cold
weather kit for operation of the unit at 40°F (4°C) or
below.
The kit contains the following:
• Variable-Pitch Fan
• Heated, insulated enclosure around fuel
conditioning system
• 6.0 kW integrated coolant pump/heater
• Resistive heat trace
• Insulation along flexible fuel line
• Mixer
• Heat trace
• Demand regulator heater
This kit is additive to the basic starting aids package.