Alpha Technologies AlphaGen 3.5_5.0kW Kohler COM5 - Manual (Page 30)

TP-6482 8/06 30 Section 3 Scheduled Maintenance
3.10 Electronic Governor
The governor system consists of an electronic governor
control and an electromechanical actuator. The system
regulates engine speed to achieve specified DC output
voltage. The generator supplies a speed signal to the
governor control unit in the form of AC electrical pulses.
The control unit compares the frequency of these pulses
to a preset reference in the speed command and
provides a control signal to the actuator. The actuator
controls the carburetor and hence the engine speed.
Note: Do not touch or move the throttle linkage between
the actuator and carburetor while the engine is
running. Manually increasing the engine speed
(rpm) can raise the output voltage high enough to
damage generator and connected equipment.
3.11 Exhaust System
Remove all combustible materials from the exhaust
location.
Combustible materials include building
materials as well as natural surroundings. Keep dry field
grass, foliage, and combustible landscaping material
away from the exhaust outlet.
Periodically inspect the exhaust system components
(exhaust manifold, exhaust line, flexible exhaust,
clamps, silencer, and outlet pipe) for cracks and
corrosion.
D Check for corroded or broken metal parts and replace
as needed.
D Check for loose, corroded, or missing clamps and
hangers. Tighten or replace clamps and/or hangers
as needed.
D Check for and remove loose insulation in the exhaust
duct.
D Check that the exhaust outlet is clear.
3.12 Alternator Service
Under normal operating conditions, routine alternator
maintenance is not required.