Kohler RZ Series User Manual

TP-5631 7/96 Scheduled Maintenance 3-3
Electronic Governor
The governor control system consists of an electronic
isochronous governor, an electro-mechanical actuator,
and a magnetic pickup. Electrical pulses are supplied
by the magnetic pickup to the isochronous governor
(controlunit)eachtimeoneoftheringgearteethpasses
the pickup. The control unit then compares the
frequency of these pulses to a preset reference and
provides a signalto the actuator which,in turn, controls
the carburetor and hence the engine speed. This is a
closed loop system and typically provides ±0.25%
steady state speed regulation.
Battery
Refertothefollowingsectionforgeneralmaintenanceif
the generator set is equipped with the battery charging
feature. Use a 12-volt battery with a rating of at least
290 cold cranking amps with 6.5-12 kW models, and
630 cold cranking amps with 18 kW models. When
using a maintenance-free battery, it is not necessary to
check the specific gravity or electrolyte level. Perform
these procedures at the intervals specified in the
Service Schedule. A negative ground system is used.
Battery connections are shown on the wiring diagrams.
Make sure battery is correctly connected and terminals
are tight.
Battery Charging Systems
6.5 kW
The battery charging circuit incorporates a winding in
the generator set alternator and a rectifying module
protectedbyaselfresettingcircuitbreaker. Thisbattery
charging feature is intended to only replenish the
necessary voltage used while the generator set is
running. It is not intended to charge a severely
discharged battery.
Generatorsets usedas astandbytoutility powerwhere
the generator set is not used regularly require an
externalbatterychargertokeepthestartingbatteryfully
charged. Observe battery polarity when connecting
battery to the generator set.
NOTE
Some early 6.5 kW generator sets do not have battery
charging.
10-18 kW
Thegeneratorset isequippedwitha belt-drivenbattery
charging alternator to keep the engine starting battery
fully charged. The alternator requires no maintenance
otherthanmaintainingbelttension. To adjustalternator
belt tension see Drive Belts earlier in this section.
Generatorsets usedas astandbytoutility powerwhere
the generator set is not used regularly require an
externalbatterychargertokeepthestartingbatteryfully
charged. Observe battery polarity when connecting
battery to the generator set.
NOTE
Thegeneratorsetwillnotstartandpossiblecircuitboard
damage may result if the battery connections aremade
in reverse.

Kohler RZ Series Specifications

General

Brand	Kohler
Model	RZ Series
Category	Portable Generator
Language	English