Emission Monitoring System; Fuses - Nilfisk PBU 56384167 Manuel D'utilisation

Emission Monitoring System

Machines are equipped with the Carb Gard Emissions
Monitoring System. Carb Gard is an emissions
monitoring device that monitors the exhaust emissions
and will shut the engine down if the emissions levels
are too low or too high.
The monitor must receive a signal from the oxygen
sensor in order to function. If it did not have a
minimum reading requirement it would be possible to
disconnect the oxygen sensor and operate the unit,
even if the emissions were out of limits. In order for
the unit to work as designed it must be able to read
both low and high signals, with "not to exceed limits" of
both.
The oxygen sensor must reach operating temperature
before it will start to send signals to the Carb Gard
module. This time is set at one minute. A unit may
shut down at a cold start up after one minute because
the oxygen sensor did not reach required temperature
to start to send a signal. If this happens, turn the
key to the off position several seconds to clear the
Carb Gard module and restart the engine. Once
the engine has started, advance the throttle to full
throttle position and start the operation. With the
engine at full throttle under load, the signal from the
oxygen sensor should be within the normal operating
ranges for safe operation. If the engine's air intake
filter needs to be serviced, or an over-filled cylinder
has been installed by mistake, or there is a problem
with the fuel system that causes the oxygen sensor's
signal to be out of range, Carb Gard will shut the unit
down in four minutes. The unit can be re-started after
clearing the module by turning off the key switch. If
corrections have not been made to the unit, Carb Gard
will continue to shut the unit down after the one minute
warm-up and/or four minute out of limit periods.
Engines tend to go to lean burn if allowed to idle for
even short periods. Even at high idle speeds most
engines will continue to lean downward. It is always
best to shut the engine off when it is not being used
to do work. Remember the engine is always creating
emissions as long as it is running.
The best manner to operate a unit equipped with
Carb Gard is as follows:
1. With the throttle in the slow position, turn the key
switch to the start position, once the engine starts,
advance the throttle to approximately half way to
allow the engine to warm up. After this warm up
period, advance the throttle to the full throttle, "fast"
position.
2. When ready to stop operation, release clutch (if
equipped) and move throttle to the slow position. If
the unit will not be used within one minute, turn the
key switch to the off position. If the unit will not be
returned to service within a few minutes it is best
to turn the gas valve on the tank off first and let the
engine consume all fuel that is in lines. Once the
engine dies, turn the key switch to off position.
3. When ready to restart, open the gas valve on the
tank, put the throttle in slow position and turn key
switch to the start position. Once the engine has
started, move throttle to full position and return to
operation.

Fuses

The machine's electrical circuit is protected by a fuse,
which stops the flow of current in the event of a circuit
overload. Once a fuse blows, it must be replaced. If
the overload that caused the fuse to fail is still present,
the new fuse will fail and the problem must be corrected.
DO NOT bypass any fuse. The ignition fuse is located
on the side of the starter switch panel.
A14
Fuse