Weekly Exercise Cycle; Engine Heater; Section 4 - Maintenance; Maintenance Performed By Authorized Service Facilities - Generac Power Systems 004742-0 Owner's Manual

3.6

WEEKLY EXERCISE CYCLE

The generator will start and exercise once every 7
days. During this weekly exercise, the unit runs for
about 20 minutes and shuts down. Transfer of loads
to generator output does not occur during the exer-
cise.
To select day and time for exercising, proceed as
follows:
• Set the Auto/Off/Manual switch to OFF .
• Set generator main circuit breaker to OFF or
OPEN.
• Locate the rocker switch on the control panel iden-
tified with the words "Set Exercise Time" (Figure
3.2).
• Push "Set Exercise Time" switch to ON position for
20 to 30 seconds and then release. Switch will
spring back into its original position when
released.
• Wait 30 seconds before setting the Auto/Off/Manual
switch to "AUTO" position.
If the Auto/Off/Manual switch is switched too
!
soon, the engine may start. If engine does
start, it will shut down automatically in about
two (2) minutes.
• Set the generator main circuit breaker to its ON or
CLOSED position.
• Generator is now programmed to start and exer-
cise every 7 days thereafter, on day and time of day
the switch was actuated.
• Place a sign on the generator control panel and the
transfer switch, indicating the day and time the
generator will be exercising.
If battery terminals are disconnected or control
panel fuse is removed, the exercise timer needs to
be reset for correct automatic exercise operation.
Figure 3.2 - "Set Exercise" Switch
14
Section 4 — Maintenance
Liquid-cooled 15 kW, 20 kW and 25 kW Generators
NOTE:
3.7

ENGINE HEATER

This standby generator comes equipped with a block
heater (Figure 3.3), similar to the block heaters used
in automotive applications. The block heater is wired
to a grounded plug.
Figure 3.3 - Engine Block Heater
Refer to applicable wiring diagram(s) and electrical
schematic(s) at back of manual for wiring connec-
tions. Customer supplies a 120V 15A Utility fed cir-
cuit for the block heater.
4.1 MAINTENANCE PERFORMED BY
AUTHORIZED SERVICE FACILITIES
A. EVERY THREE MONTHS
1.Check battery state of charge and condition.
2.Inspect and test fuel system.
3.Check transfer switch.
4.Inspect exhaust system.
5.Check engine ignition system.
6.Check fan belts.
B. ONCE EVERY SIX MONTHS
1.Test Engine Safety Devices (low oil pressure, low
coolant level, high coolant temperature).
C. ONCE ANNUALLY
1.Test engine governor; adjust or repair, if needed.
2.Clean, inspect generator.
3.Flush cooling system.
D. FIRST 100 OPERATING HOURS
1.Change engine oil and oil filter.
change, service engine oil and filter at 150 oper-
ating hours or 6 months, whichever comes first.)
2.Retorque cylinder head. (See Torque Specs, page
7.)
3.Retorque intake and exhaust manifold. (See
Torque Specs, page 7.)
(After initial