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Operation
37100 B
MDG20IF4-MLG20IF4 Operating Manual
19
occurs when an engine is run at less than 30% of its full load capacity, causing unburned fuel to accumulate in the
exhaust system. Wet stacking can be detected by continuous black exhaust when the unit is under a constant load.
It can also cause fouling of injectors and buildup on engine valves. Diesel engines operate properly when applied
loads are between 30% and 100% capacity. Appropriate generator sizing is determined by the anticipated load. If
the unit is in a wet stack condition, load the unit heavily for five hours or until the exhaust is clear.
CUSTOMER CONVENIENCE RECEPTACLES
The unit is equipped with a receptacle panel for running
accessories or tools from the generator. Power is supplied
to the receptacles any time the engine is running and the
main circuit breaker is switched to the ON (I) position.
The standard receptacle panel is equipped with two of
each of the following receptacles:
1. 240V/30A Twist-lock
2. 120V/20A GFCI
3. 240V/50A Twist-lock
Figure 16 - Receptacle Panel
Note:
Should the main breaker trip, remove some of the load to the receptacles before turning them back on.
Each receptacle has an individual circuit breaker, located behind the receptacle panel. The breakers are labeled with
the corresponding amperage for the receptacle they protect.
Note:
To ensure proper grounding, anytime the generator is providing power to any equipment or load panels that
do not have a grounded plug, a ground wire
MUST BE
added between the equipment and the grounding stud on
the receptacle panel per the National Electrical Code (NEC), state and local regulations.
TRANSFER SWITCH
The generator neutral is bonded to ground when shipped from the factory. The bonding
plate will need to be removed when the unit is used as a standby power supply. Installation
should be in compliance with the National Electrical Code (NEC), state and local regulations.
When the unit is used as a standby power supply, it must be equipped with a transfer switch which isolates it from
the utility’s distribution system. A transfer switch is designed to transfer electrical loads from the normal power source
(utility) to the emergency power source (generator) when normal voltage falls below a prescribed level. The transfer
switch automatically returns the load back to the normal source when power is restored back to operating levels.
Breakers Located
Behind The Panel
2
1
3
00194
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