Guardian Technologies 004721-0 Engine Heater, A. Every Three Months, B. Once Every Six Months

Section 4 — Maintenance

Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators

•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 seven 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.

NOTE:

If battery terminals are disconnected, the exercise timer needs to be reset for correct automatic exer- cise operation.

Figure 3.2 - “Set Exercise” Switch

3.6ENGINE 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.

4.1MAINTENANCE 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. (After initial change, service engine oil and filter at 150 oper- ating hours or six months, whichever comes first.)

2.Retorque cylinder head. (See Torque Specs, Section 1.13.)

3.Retorque intake and exhaust manifold. (See Torque Specs, Section 1.13.)

14 Generac® Power Systems, Inc.