Section 4 — Maintenance

Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators

Figure 3.3 – Low Oil Pressure and

High Temperature Switches

Low Oil Switch

 

High Temp Switch

 

 

 

 

 

 

The generator panel’s 5 amp fuse protects the battery charge circuit against overload. If the fuse element has melted open, battery charging capability will not be pos- sible. Replace the fuse using only an identical 5 amp replacement. To remove fuse, push cap down and rotate counterclockwise.

Figure 4.1 – Generator Control Panel

Loosen

Oil

Drain

Hose

Oil Filter

‹ 3.7.3 OVERCRANK

FUSE

5A

AUTO OFF MAN.

FUSE

15ASET EXERCISE

TIME

L o c a t e y o u r n e a r e s t d e a le r a t :

POWER SYSTEMS, INC.

SYSTEM SET

LOW OIL

HIGH TEMP.

OVER SPEED

OVER CRANK

F L A S H IN G G R E E N L E D =

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 =

E X E R C IS E R N O T S E T

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 will light indicating an overcrank 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.

4.2CHECKING 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.

Figure 4.2 — Oil Dipstick and Fill, 7 kW

3.7.3.1 Approximate Crank Cycle Times

•15 seconds ON

•7 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.

4.1FUSE

The generator panel’s 15 amp fuse (Figure 4.1) protects 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 cannot crank or start. Replace the fuse using only an identical 15-amp replacement.

Oil Dipstick and Fill

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.

Never operate the engine with the oil level

!below the “Add” mark on the dipstick. Doing this could damage the engine.

Generac® Power Systems, Inc. 17

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Guardian Technologies 04758-2, 04759-2, 04760-2 Checking the Engine OIL Level, ‹ 3.7.3 Overcrank, ‹ 3.7.4 Overspeed
Page 18 Page 20

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