The general cure for wet stacking is a few hours of operation at a load of
about 75% to 100% of the generator’s nameplate rating
, raising the exhaust temperature high enough to vaporize the unburned fuel in the exhaust system and blow out the soot.
How do I stop wet stacking?
To prevent wet stacking,
regularly exercise your generator
according to NFPA and manufacturer guidelines (at least once a week with at least a 60% load), always run your engine at optimal temperatures, make sure the fuel tank is always full, have a qualified technician maintain your generator at regular intervals, and …
Is Wet stacking normal?
Wet stacking has several bad effects on a diesel engine generator, and if unchecked for a long period of time, it can result in reduced engine performance or permanent engine damage requiring an expensive major engine overhaul.
Is Wet stacking bad?
One of the bad effects of wet stacking is that
when unburned fuel is removed from the combustion chamber, it builds up in the exhaust system and fouls injectors
while at the same time leading to the buildup of carbon on the exhaust pipes, turbo charger and exhaust valves.
What happens if a generator is Underloaded?
This unburnt fuel leads to a potential fire risk – if the generator is suddenly or subsequently placed under a large/full load,
the temperature of the exhaust fumes will heat the silencer up to an extreme level
and the unburnt fuel mixture could ignite.
What does wet stacking look like?
Wet stacking is detectable by the presence of
a black ooze around the exhaust manifold, piping and turbocharger
, if fitted. It can be mistaken for lubricating oil in some cases, but it consists of the “heavy ends” of the diesel fuel which do not burn when combustion temperature is too low.
What causes a diesel engine to slobber?
Engine slobbering usually results
when an engine is run for long periods of time at light loads
. … Low engine temperatures can also result in incomplete combustion, causing low exhaust temperatures and the condensation of un-burnt fuel in the exhaust manifold.
Is it OK to run generator without load?
As a result, generators follow a rule of internal combustion engines – they must have a certain load attached to them in order to operate properly.
Running generators on low or no load can have a range of results that can lead to problems
, from inefficient running to serious damage or even complete failure.
What does load mean on a diesel?
In diesel engines, the engine speed is adjusted by the fuel taken into the engine’s cylinders. The power generated by the engine is also adjusted by increasing or decreasing the fuel sent into the cylinders. Engine load is
the expression of reducing or increasing the desired power to be withdrawn from the engine
.
What is diesel slobber?
Engine slobber is
a black, oily liquid that can leak from exhaust manifold joints
due to extended low- or no-load scenarios. Running at high idle with little or no load reduces the heat in the cylinder, allowing unburned fuel and oil deposits to leak through the exhaust slip joints.
Should you run your generator dry?
Generators need plenty of ventilation. Run it dry. When you are finished using the generator, run it dry
by turning off the gas valve while the engine is running
. That will keep the carburetor clean and protect it from old gasoline.
Can you run a generator 24 hours a day?
While some models have been manufactured to provide power for days at a time,
most generators can be run for 8-, 12-, or 24-hour intervals
–with a few boasting 72-hours running times.
What is the common problem of generator?
Batteries:
Battery failure
is the most common failure when it comes to generators. Always make sure the batteries, chargers, and all cables and connections leading to and from are in good condition. Failure to Start: If a generator fails to start, one cause could be the controls not being set to auto.
How do load banks work?
A Load Bank is a device which develops an electrical load,
applies the load to an electrical power source and converts or dissipates the resultant power output of the source
. A Load Bank is intended to accurately mimic the operational or “real” load which a power source will see in actual application.
What is engine slobbering?
Engine slobber is
a black, oily liquid that can leak from exhaust manifold joints
due to extended low- or no-load scenarios. Running at high idle with little or no load reduces the heat in the cylinder, allowing unburned fuel and oil deposits to leak through the exhaust slip joints.
How often should a generator be load bank tested?
Testing these emergency power supplies should include monthly half-hour-long tests, but they should also undergo tests that last up to
four hours once every 36 months
.
