Generac Power Systems 004992-0, 004992-1 Torque Specifications, Engine OIL Recommendations

Section 2 — Installation

Guardian 40kW Liquid-cooled Generators

DANGER

Serious injury or damage may occur if not

!configured properly. Please consult an author- ized service dealer with any questions.

1.13 TORQUE SPECIFICATIONS

Tighten the bolts from the middle out, in a criss- cross pattern.

Cylinder Head	50 ft.lb./105 ft.lb./105 ft.lb.
Intake Manifold	48 in.lb./84 in.lb./84 in.lb.
Exhaust Manifold	25 ft.lb.

Do not use any chromate base rust inhibitor

!with ethylene glycol base anti-freeze or chromiumhydroxide (“green slime”) forms and will cause overheating. Engines that have been operated with a chromate base rust inhibitor must be chemically cleaned before adding ethylene glycol base anti-freeze. Using any high silicate anti-freeze boosters or addi- tives will also cause overheating. It is also rec- ommend that any soluble oil inhibitor is NOT USED for this equipment.

1.14 ENGINE OIL RECOMMENDATIONS

The unit has been filled with 5W-20 engine oil at the factory. Use a high-quality detergent oil classified “For Service CC, SD, SE, SF.” Detergent oils keep the engine cleaner and reduce carbon deposits. Use oil having the following SAE viscosity rating, based on the ambient temperature range anticipated before the next oil change:

Temperature	Oil Grade (Recommended)
Above 80° F (27° C)	SAE 15W-40
32° to 80° F (-1° to 27° C)	SAE 15W-40
Below 32° F (0° C)	SAE 15W-40

NOTE:

Synthetic oil is highly recommended in any ele- ment with temperatures above 90° F or below 30° F.

Any attempt to crank or start the engine

!before it has been properly serviced with the recommended oil may result in an engine fail- ure.

1.15 COOLANT RECOMMENDATIONS

Use a mixture of half low silicate ethylene glycol base anti-freeze and half de-ionized water. Cooling system capacity is about 20 U.S. quarts (19.3 liters). Use only de-ionized water and only low silicate anti- freeze. If desired, add a high quality rust inhibitor to the recommended coolant mixture. When adding coolant, always add the recommended 50-50 mix- ture.

1.16 BEFORE INSTALLATION

Before installing this equipment, check the ratings of both the generator and the transfer switch. Read “Emergency Isolation Method” and “Total Circuit Isolation Method” in Sections 2.5 and 2.6.

The generator’s rated wattage/amperage capacity must be adequate to handle all electrical loads that the unit will power. The critical (essential) loads may need to be grouped together and wired into a sepa- rate “emergency” distribution panel.

The standard transfer switch has no sensing or con- trolling circuit boards. Instead, the generator control console houses a “Printed Circuit Board Assembly”, which controls all phases of operation, including engine start up and load transfer.

2.1STANDBY GENERATOR INSTALLATION

DANGER

Connecting this generator to an electrical sys- tem normally supplied by an electric utility shall be by means of a transfer switch, so as to isolate the electric system from the utility distri- bution system when the generator is operating. Failure to isolate the electric system by these means will result in damage to the generator and may also result in injury or death to utility workers due to backfeed of electrical energy.

If an open bottom is used, the engine-genera- tor is to be installed over non-combustible materials and should be located such that com- bustible materials are not capable of accumu- lating under the generator set.

Only qualified, competent installation contractors or electricians thoroughly familiar with applicable codes, standards and regulations should install this standby electric power system. The installation must comply strictly with all codes, standards and regula- tions pertaining to the installation.

8 Generac® Power Systems, Inc.