Generac
®
Power Systems, Inc.
15
Section 4 — Maintenance
Air-cooled 7 kW Generator
Figure 3.3 – Low Oil Pressure and
High Temperature Switches
3.7.3
OVERCRANK
This feature prevents the generator from damaging
itself when it continually attempts to start and anoth-
er problem, such as no fuel supply, prevents it from
starting. The unit will crank and rest for a preset time
limit. Then, it will stop cranking, and the LED on the
generator control panel will light indicating an over-
crank failure. The AUTO/OFF/MANUAL switch will
need to be set to OFF and then back to AUTO to reset
the generator control board.
NOTE:
If the fault is not repaired, the overcrank feature
will continue to activate.
3.7.3.1 Approximate Crank Cycle Times
• 15 seconds ON
• 15 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• Repeat for 45 seconds
Approximately 90 seconds total
3.7.4
OVERSPEED
This feature protects the generator from damage by
shutting it down if it happens to run faster than the
preset limit. This protection also prevents the gener-
ator from supplying an output that could potentially
damage appliances connected to the generator cir-
cuit. Contact the nearest Generac Authorized Dealer
if this failure occurs.
4.1
FUSE
The generator panel’s 15 amp fuse (Figure 4.1) pro-
tects the DC control circuit against overload. The fuse
is wired in series with the battery output lead to the
panel. If the fuse element has melted open, the engine
will not crank or start. Replace the fuse using only an
identical 15-amp replacement.
The generator panel’s five amp fuse protects the bat-
tery charge circuit against overload. If the fuse ele-
ment has melted open, there will not be battery
charging capability. Replace the fuse using only an
identical five amp replacement. To remove fuse, push
cap down and rotate counterclockwise.
Figure 4.1 – Generator Control Panel
4.2
CHECKING THE ENGINE
OIL LEVEL
For oil capacities, see “Specifications,” Section 1.5.
For engine oil recommendations, see Section 4.3.1.
To check the engine oil level, proceed as follows
(Figure 4.2):
1. Start the generator by moving the Auto/
Off/Manual switch to the MANUAL position. Allow
it to run for a short while and then shut it down
by moving the switch to the OFF position.
2. Remove the dipstick and wipe it dry with a
clean cloth.
3. Install the dipstick; 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.
Figure 4.2 — Oil Dipstick and Fill, 7 kW
Oil Dipstick and Fill
HIGH TEMP.
OVER SPEED
LOW OIL
SYSTEM SET
OVER CRANK
MAN.
SET
OFF
AUTO
15A
FUSE
EXERCISE
TIME
R
POWER SYSTEMS, INC.
L o c a t e y o u r
n e a r e s t
d e a le r
a t :
R
FUSE
5A
E X E R C IS E R
N O T
S E T
N O
U T IL IT Y
S E N S E
4
F L A S H IN G R E D
L E D S =
F L A S H IN G G R E E N
L E D =
High Temperature
Switch
Low Oil Pressure Switch