Generac Power Systems 005040-0, 005040-1, 005053-0, 005053-1, 005054-0, 005054-1 1.1GENERATOR

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1.1GENERATOR

Section 1 - General Information

Guardian Liquid-cooled 25 kW Generator

1.1GENERATOR

This equipment is a liquid-cooled, engine-driven gen- erator set. The generator is designed to supply elec- trical power that operates critical electrical loads during utility power failure. The unit has been facto- ry-installed in a weather resistant, all metal enclosure and is intended for outdoor installation only. Use this generator as a source of electrical power for the oper- ation of 120 and/or 240VAC, single-phase loads.

These models are available. They are rated as fol- lows:

Model 005040-0:Provides 25,000 watts (25 kW) of single-phase power.

Model 005053-0:Provides 20,000 watts (20 kW) of single-phase power.

Model 005054-0:Provides 15,000 watts (15 kW) of single-phase power.

•Protect the switch at all times against excessive moisture, dust, dirt, lint, construction grit and cor- rosive vapors.

If a transfer switch is not included, one may be pur- chased separately from a Generac Authorized Dealer.

1.3AUTOMATIC SYSTEM OPERATION

When this generator, along with a transfer switch, has been installed and interconnected, a circuit board in the generator panel constantly monitors utility power source voltage. Should that voltage drop below a pre- set value, and remain at such a low state for a preset amount of time, the generator cranks and starts. After the generator starts, the transfer switch transfers load circuits so the generator can power them.

When utility source voltage has been restored, the switch re-transfers back to the utility source voltage and the generator then shuts down.

Please reference the transfer switch manual for spe- cific information.

If this generator is used to power electrical

!load circuits normally powered by a utility power source, it is required by code to install a transfer switch. The transfer switch must effectively isolate the electric system from the utility distribution system when the generator is operating (NEC 701). Failure to isolate an electrical system by such means results in damage to the generator and may also result in injury or even death to utility power work- ers due to backfeed of electrical energy.

1.2TRANSFER SWITCH

This generator system is intended to be used with a matched automatic transfer. It may be supplied in either a NEMA 1 enclosure or a NEMA 3R enclosure. The NEMA 1 enclosure is intended for indoor use only. The NEMA 3R enclosure is weather proof and can be used indoors or outdoors. Follow these rules:

•Install the transfer switch on a firm, sturdy sup- porting structure.

•To prevent switch distortion, level the switch if nec- essary. This can be done by placing washers between the switch enclosure and the mounting surface.

•Never install the switch where water or any corro- sive substance might drip onto the enclosure.

1.4GENERATOR AC CONNECTION

SYSTEMS

The generator was shipped from the factory with its stator AC output leads connected in a single-phase, 3-wire generator AC connection system (Figure 1.1). The stator assembly in this system consists of a pair of stationary windings, with two leads brought out of each winding. Each single winding can supply 120 VAC, 60 Hertz. When the two windings are connected in series, a 240 VAC, 60 Hertz AC output results. Typically the two “hot” leads in the circuit are Wires No. 11 and 44. The “Neutral” leads are the junction of Wires 22 and 33.

Figure 1.1 - Generator AC Connection System

0

NEUTRAL

Figure 1.2 - Main Circuit Breaker

Model

Rating

Phase

Actual Current

C/B Rating*

% over rating

Circuit Breaker

005040-0

25,000 W

1

104.2 A

125 A

120%

125A BQ2

005053-0

20,000 W

1

83.3 A

100 A

120%

100A BQ2

005054-0

15,000

1

62.5

70 A

120%

70A BQ2

 

 

 

* Amp Rating of C/B structured under model.

 

 

4 Generac® Power Systems, Inc.

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Contents Liquid-cooled,Prepackaged Standby Generators SHOULD ATTEMPT INSTALLATIONOwner’s Manual This manual should remain with the unit‹HOW TO OBTAIN SERVICE AUTHORIZED SERVICE DEALER LOCATION‹OPERATION AND MAINTENANCE INTRODUCTIONTable of Contents INTRODUCTIONGENERAL HAZARDS Despite the safe design of this generatorParts of the generator are rotating and/or hot EXPLOSION HAZARDS ELECTRICAL HAZARDSFIRE HAZARDS ‹STANDARDS INDEX1.3AUTOMATIC SYSTEM OPERATION 1.2TRANSFER SWITCH1.1GENERATOR 1.4GENERATOR AC CONNECTION SYSTEMS‹1.7.3 LOW COOLANT LEVEL SWITCH ‹1.7.1 LOW OIL PRESSURE SWITCH‹1.7.2 HIGH COOLANT TEMPERATURE SWITCH Figure 1.4 - Low Oil Pressure Switch‹1.8.1 UNPACKING PRECAUTIONS 1.10 SPECIFICATIONS‹1.7.6 LOW BATTERY 1.8UNPACKING1.11 FUEL CONSUMPTION 1.12RECONFIGURING THE FUEL SYSTEM FOR LP VAPORFigure 1.8 — Reconfigure the Fuel System ‹ 1.10.2 GENERATOR1.13 ENGINE OIL RECOMMENDATIONS 1.15 BEFORE INSTALLATION2.1STANDBY GENERATOR INSTALLATION 1.14 COOLANT RECOMMENDATIONS2.2GENERATOR LOCATION 2.3GENERATOR MOUNTING AND SUPPORT2.4BASIC STANDBY ELECTRIC SYSTEM ‹2.1.2 OTHER PUBLISHED STANDARDS2.6TOTAL CIRCUIT ISOLATION METHOD 2.9USING AN ENGINEERED “GTS” TRANSFER SWITCH2.5EMERGENCY CIRCUIT ISOLATION METHOD 2.7GROUNDING THE GENERATOR‹2.10.1 VENTED BATTERIES 2.10BATTERY INSTALLATIONPos2 OFF — Standard Prepackaged ATS Application Standby generators installed with automatic2.11 PREPARATION BEFORE START-UP 3.1ENGINEERED GTS TRANSFER SWITCH‹2.11.2 TRANSFER SWITCH ‹2.11.1 PRIOR TO INITIAL START-UP‹3.2.5 SET EXERCISE TIME SWITCH ‹3.2.2 FAULT INDICATOR LEDS‹3.2.1 AUTO/OFF/MANUAL SWITCH 3.2CONTROL CONSOLE COMPONENTS3.4ENGINE GOVERNOR ADJUSTMENTS 3.3MANUAL TRANSFER AND START-UP‹3.2.6 SYSTEM READY LED 3.6AUTOMATIC OPERATION Figure 3.2 — Engine Governor AdjustmentFigure 3.3 - “Set Exercise Time” Switch 3.7WEEKLY EXERCISE CYCLEB. ONCE EVERY SIX MONTHS 3.8CONTROL BOARD DIP SWITCH SETTINGSA. EVERY THREE MONTHS C. ONCE ANNUALLY4.4CYLINDER HEAD PROCEDURE 4.2EXHAUST MANIFOLD PROCEDURE4.3INTAKE MANIFOLD PROCEDURE Figure 4.1 — Intake Manifold InstallationENGINE DC ELECTRICAL SYSTEM 4.8MAINTENANCE OWNER/ OPERATOR CAN PERFORM4.6OVERLOAD PROTECTION FOR 4.7CHECKING FLUID LEVELS‹4.8.8 CHECK FAN BELT ‹4.8.11 CHANGING THE ENGINE AIR CLEANERFigure 4.4 – Setting the Spark Plug Gap ‹4.8.9 INSPECT ENGINE GOVERNOR‹4.9.2 BATTERY 4.9MISCELLANEOUS MAINTENANCE‹4.9.1 CLEANING THE GENERATOR ‹4.9.3 BATTERY MAINTENANCE4.10 SCHEDULED MAINTENANCE Service Maintenance Interval InformationMaintenance LevelTasks Maintenance CAUSE TROUBLESHOOTING POINTSPROBLEM CORRECTIONSection 6 — Notes 26 Generac Power Systems, Inc Section 7 - Electrical DataGenerac Power Systems, Inc. 28 Generac Power Systems, Inc Generac Power Systems, Inc 30 Generac Power Systems, Inc Generac Power Systems, Inc. 32 Generac Power Systems, Inc Generac Power Systems, Inc. MOUNT ITEM PART NODESCRIPTION 31 7 11 Enclosure — Drawing No. 0E9720-D 54 36 30 0C2267 40 Generac Power Systems, Inc 0C2267 42 Generac Power Systems, Inc Engine — Drawing No. 0E9918-E0E9909 0E1028A I/N 0E8456 LOCKTIGHT 0F1659A Muffler — Drawing No. 0F2930-B Stepper Motor — Drawing No. 0E9979-C Radiator — Drawing No. 0E9965-D Section 9 — Installation Diagram Installation Diagram — Drawing No. 0F1020-A1-800-333-1322 YOUR WARRANTY RIGHTS AND OBLIGATIONSPURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES CALIFORNIA EMISSION CONTROL WARRANTY STATEMENTEMISSION CONTROL SYSTEM WARRANTY EMISSION RELATED PARTS INCLUDE THE FOLLOWINGGENERAC POWER SYSTEMS, INC WARRANTY SCHEDULETHIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING P.O. BOX 297 • WHITEWATER, WI
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