Figure 3.2 – Engine Block Heater
Refer to applicable wiring diagram(s) and electrical
schematic(s) at the back of this manual for wiring con-
nections.
3.6 WEEKLY EXERCISE CYCLE
The generator will start and exercise once every seven
days. During this weekly exercise, the unit runs for
approximately 20 minutes and shuts down. Transfer of
loads to generator output does not occur during the
exercise unless power is lost during the exercise period.
To select the day of the week and time of day for exer-
cising, proceed as follows:
• Set the Auto/Off/Manual switch to OFF.
• Set generator’s main circuit breaker to its OFF (or
open) position.
• Locate the rocker switch on the control panel identi-
fied with the words “Set Exercise Time” (Figure 3.3).
• Push “Set Exercise Time” switch to the ON position
for 20 to 30 seconds and then release. The switch will
spring back into its original position when released.
• Wait 30 seconds before setting the Auto/Off/
Manual switch to the AUTO position.
NOTE:
The unit will exercise 20 minutes before it is set.
Example: Set – Noon; Exercise – 11:40 a.m.
If you switch 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’s main circuit breaker to its ON (or
closed) position.
• The generator is now programmed to start and exer-
cise every seven days thereafter, on the day and at the
time of day the switch was activated.
• Place a sign on the generator’s control panel and on
the transfer switch that indicates the day and time
the generator will be exercising.
NOTE:
If the battery terminals are disconnected or the
control panel fuse is removed, the exercise timer
needs to be reset for automatic exercise operation.
Figure 3.3 – “Set Exercise” Switch on Control Panel
4.1 CHECKING THE ENGINE OIL LEVEL
For oil capacities, see “Specifications,” Section 1.7.2,
Page 6. For engine oil recommendations, see Section
4.2.1. To check the engine oil level, proceed as follows
(Figure 4.1):
1. Remove the dipstick and wipe it dry with a
clean cloth.
2. Install the dipstick cap; then, remove it again. The
oil level should be at the dipstick “Full” mark. If nec-
essary, add oil to the “Full” mark only. DO NOT FILL
ABOVE THE “FULL” MARK.
3. Install the dipstick.
Never operate the engine with the oil level below
the “Add” mark on the dipstick. Doing this could
damage the engine.
!
!
INLET
OUTLET
Section 4 — Maintenance
Guardian Liquid-cooled 40 kW Generator
14 Generac
®
Power Systems, Inc.
