Ingersoll Rand G330 Guía De Usuario Y Mantenimiento Manual página 84

Maintenance
3
2
24
1
2
3
1
5
4
6
1
Idling speed. Adjustment
First check that the air filter is not clogged and that
the throttle arm (1) on the fuel injection pump is
against the idling speed stop (2) when the throttle
mechanism is in idling position. Check also that the
throttle arm presses against the max stop (3) when
the throttle control is in the wide open throttle (WOT)
position. Adjust the control if necessary.
Idling speed must only be checked and adjusted when
the engine has reached normal operating temperature.
For the correct idling speed, see the "Technical data"
chapter.
WARNING! Approaching or working on a running
engine is dangerous. Watch out for rotating com-
ponents and hot surfaces.
RSV governor
1. Allow the engine to operate at low idling speed.
2. If necessary, adjust the engine speed by removing
the domed nut (1), slackening off the locknut (2)
and adjusting the engine speed with the screw (3).
If the engine speed is uneven, the idle speed
damping should be adjusted as follows:
1. Remove the domed nut (4) and slacken off the
locknut (5). Carefully turn the damping screw (6)
clockwise until the engine speed stabilises.
2. Check that the high idling speed has not changed.
If it has changed, the damping screw (6) has been
screwed in too far.
3. Lock the damping screw (6) and install the domed
nut (4) when the adjustment is complete.
RQV, RQ governor
1. Allow the engine to operate at low idling speed.
2. If necessary, adjust the engine speed with the
screw for low idling speed (1).
GAC governor
To adjust the idling speed on Generating set engines
with GAC governor, refer to the separate documenta-
tion supplied with the GAC equipment.
Governor (Heinzmann)
The governors of the T(A)D 420–721 GE series en-
gines are mechanical variable-speed governors with
centrifugal measuring element of M/s Heinzmann.
All governor settings may only be conducted by
trained specialists on a specifically laid out gover-
nor test bench.