Cooling System, Engine Coolant | Guardian Technologies 004270-3

Section 3 – Maintenance

QUIETPACT™ 75D Recreational Vehicle Generator

Do not open or mutilate the battery. Released ! electrolyte has been known to be harmful to

the skin and eyes, and to be toxic.

The electrolyte is a dilute sulfuric acid that is ! harmful to the skin and eyes. It is electrically

conductive and corrosive. The following procedures are to be observed:

• Wear full eye protection and protective clothing;

• Immediately wash with water all skin areas that come into contact with the electrolyte.

• If the electrolyte contacts the eyes, immediately flush eyes thoroughly with water, and seek med- ical attention.

• Spilled electrolyte is to be washed down with an acid-neutralizing agent. A common practice is to use a solution of 1 pound (500 grams) bicarbonate of soda to 1 gallon (4 liters) of water. The bicar- bonate of soda solution is to be added until the evidence of reaction (foaming) has ceased. The resulting liquid is to be flushed with water and the area dried.

3.7COOLING SYSTEM

Air intake and outlet openings in the generator com- partment must be open and unobstructed for contin- ued proper operation. Avoid obstructions, such as, high grass, weeds, brush, leaves, and snow.

Without sufficient cooling and ventilating air flow, the engine/generator quickly overheats, which causes it to shut down.

3.8ENGINE COOLANT

Check the coolant level in the coolant recovery tank at least once daily or prior to use. Add the recom- mended coolant mixture (see Section 1.5.4), as nec- essary; the tank should be kept within the levels indi- cated on the adjacent decal. If desired, a high-quality rust inhibitor to the recommended 50-50 coolant mixture may be added. If added consistently, the rec- ommended mixture will protect the unit against freezing temperatures.

Periodically remove the radiator pressure cap, locat- ed behind the access cover above the user control panel, to make sure the coolant recovery system is functioning properly. Coolant should be at the bottom of the radiator filler neck. If the coolant level is low, inspect the gasket in the radiator pressure cap. Replace the cap, if necessary. To have the pressure cap tested, contact a Generac Authorized Service Dealer. Inspect both the cooling system and coolant recovery system for leaks.

DANGER

Do not remove the radiator pressure cap while

!the engine is hot; otherwise, serious burns from boiling liquid or steam could result.

Ethylene glycol base antifreeze is poisonous.

!Do not use mouth to siphon coolant from the radiator, recovery bottle, or any container. Wash hands thoroughly after handling. Never store used antifreeze in an open container because animals are attracted to the smell and taste of antifreeze, even though it is poisonous to them.

Do not use any chromate base rust inhibitor

!with ethylene glycol base antifreeze; other- wise, chromium hydroxide (“green slime”) will form and cause overheating. Engines that have been operated with a chromate base rust inhibitor must be chemically cleaned before adding ethylene glycol base antifreeze. Using any high-silicate antifreeze boosters or addi- tives will also cause overheating. DO NOT use any soluble oil inhibitor for this equipment.

3.9MAJOR SERVICE MANUAL

To obtain a service manual for the generator, the nearest Generac Authorized Service Dealer. Make sure to identify the MODEL NUMBER and SERIES.

3.10 DRIVE BELT

The engine drives the generator rotor by means of a pulley and drive belt arrangement. Drive belt tension was properly adjusted before the unit was shipped from the factory. If suspect that drive belt tension is incorrect, contact a Generac Authorized Service Dealer.

3.11 EXERCISING THE GENERATOR

At least once every seven days, start and operate the generator. Let the unit run for at least 30 minutes to “exercise” the engine. If the generator cannot be exer- cised every seven days, and it is to be out of service longer than 30 days, see Section 3.12.

14 Generac® Power Systems, Inc.