Bryant ASPAS1BBA007 Diagnostic Repair Manual
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Bryant ASPAS1BBA007 Diagnostic Repair Manual

Automatic home standby generators air-cooled models
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AUTOMATIC HOME STANDBY GENERATORS
www.bryant.com
DIAGNOSTIC
REPAIR
MANUAL
AIR-COOLED
MODELS:
ASPAS1BBA007
(6 kW NG, 7 kW LP)
ASPAS1BBA012
(12 kW NG, 12 kW LP)
ASPAS1BBA015
(13 kW NG, 15 kW LP)

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  • Page 1 AUTOMATIC HOME STANDBY GENERATORS DIAGNOSTIC REPAIR MANUAL AIR-COOLED MODELS: ASPAS1BBA007 (6 kW NG, 7 kW LP) ASPAS1BBA012 (12 kW NG, 12 kW LP) ASPAS1BBA015 (13 kW NG, 15 kW LP) www.bryant.com...

  • Page 2: Specifications

    SPECIFICATIONS GENERATOR Model ASPAS1BBA007 Model ASPAS1BBA012 Model ASPAS1BBA015 Rated Max. Continuous Power Capacity (Watts*) 6,000 NG/7,000 LP 12,000 NG/12,000 LP 13,000 NG/15,000 LP Rated Voltage 120/240 120/240 120/240 Rated Max. Continuous Load Current (Amps) 120 Volts** 50.0 NG/58.3 LP 100.0 NG/100.0 LP 108.3 NG/125.0 LP...

  • Page 3: General Information

    TABLE OF CONTENTS PART TITLE Specifications General Information DIAGNOSTIC AC Generators V-Type Prepackaged Transfer Switches REPAIR MANUAL DC Control Operational Tests and Adjustments Disassembly Electrical Data Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...
  • Page 4 SPECIFICATIONS MOUNTING DIMENSIONS Page 4...
  • Page 5 SPECIFICATIONS MOUNTING DIMENSIONS Page 5...
  • Page 6 SPECIFICATIONS MAJOR FEATURES 7 kW, Single Cylinder GH-410 Engine 12 kW and 15 kW, V-twin GT-990 Engine Page 6...

  • Page 7: Table Of Contents

    TABLE OF CONTENTS PART TITLE Generator Identification PART 1 Prepackaged Installation Basics Preparation Before Use GENERAL Testing, Cleaning and Drying Engine-Generator Protective Devices INFORMATION Operating Instructions Automatic Operating Parameters Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...

  • Page 8: Generator Identification

    SECTION 1.1 PART 1 GENERAL INFORMATION GENERATOR IDENTIFICATION INTRODUCTION It is not our intent to provide detailed disassembly and reassembly instructions in this manual. It is our intent to (a) provide the service technician with an This Diagnostic Repair Manual has been prepared understanding of how the various assemblies and especially for the purpose of familiarizing service systems work, (b) assist the technician in finding the...

  • Page 9: Prepackaged Installation Basics

    SECTION 1.2 PART 1 GENERAL INFORMATION PREPACKAGED INSTALLATION BASICS INTRODUCTION The pressure at which LP gas is delivered to the generator fuel solenoid valve may vary considerably, Information in this section is provided so that the depending on ambient temperatures. In cold weather, supply pressures may drop to "zero".
  • Page 10 SECTION 1.2 PART 1 GENERAL INFORMATION PREPACKAGED INSTALLATION BASICS Figure 1. Typical Prepackaged Installation Page 10...
  • Page 11 SECTION 1.2 PART 1 GENERAL INFORMATION PREPACKAGED INSTALLATION BASICS POWER SOURCE AND LOAD LINES SYSTEM CONTROL INTERCONNECTIONS The utility power supply lines, the standby (generator) Prepackaged home standby generators are equipped supply lines, and electrical load lines must all be with a terminal board identified with the following connected to the proper terminal lugs in the transfer terminals: (a) utility 1, (b) utility 2, (c) 23, and (d) 194.

  • Page 12: Preparation Before Use

    SECTION 1.3 PART 1 GENERAL INFORMATION PREPARATION BEFORE USE GENERAL ENGINE OIL RECOMMENDATIONS The installer must ensure that the home standby The primary recommended oil for units with air- generator has been properly installed. The system cooled, single cylinder or V-Twin engines is synthetic must be inspected carefully following installation.

  • Page 13: Testing, Cleaning And Drying

    SECTION 1.4 PART 1 GENERAL INFORMATION TESTING, CLEANING AND DRYING VISUAL INSPECTION When it becomes necessary to test or troubleshoot a generator, it is a good practice to complete a thorough visual inspection. Remove the access covers and look closely for any obvious problems. Look for the following: •...
  • Page 14 SECTION 1.4 PART 1 GENERAL INFORMATION TESTING, CLEANING AND DRYING 2. Before reading a DC voltage, always set the meter to a higher voltage scale than the anticipated reading. if in doubt, start at the highest scale and adjust the scale downward until correct readings are obtained.
  • Page 15 SECTION 1.4 PART 1 GENERAL INFORMATION TESTING, CLEANING AND DRYING If proper procedures are used, the following conditions can be detected using a VOM: • A "short-to-ground" condition in any stator or rotor winding. • Shorting together of any two parallel stator windings.
  • Page 16 SECTION 1.4 PART 1 GENERAL INFORMATION TESTING, CLEANING AND DRYING INSULATION RESISTANCE TESTING ROTOR INSULATION: Apply a voltage of 500 volts across the rotor positive The insulation resistance of stator and rotor windings (+) slip ring (nearest the rotor bearing), and a clean is a measurement of the integrity of the insulating frame ground (i.e.
  • Page 17 SECTION 1.4 PART 1 GENERAL INFORMATION TESTING, CLEANING AND DRYING parallel windings. Figure 2 is a pictorial representation 6. Now proceed to the C2 connector. Each winding will be of the various stator leads on units with air-cooled individually tested for a short to ground. Insert a large engine.
  • Page 18 SECTION 1.4 PART 1 GENERAL INFORMATION TESTING, CLEANING AND DRYING 5. Insert a large paper clip into Pin Location No. 1 (Wire 6. Observe the breakdown lamp, then turn the tester switch 77). Connect the red tester probe to the paper clip. OFF.

  • Page 19: Engine-Generator Protective Devices

    SECTION 1.5 PART 1 GENERAL INFORMATION ENGINE-GENERATOR PROTECTIVE DEVICES GENERAL Standby electric power generators will often run unattended for long periods of time. Such operating parameters as (a) engine oil pressure, (b) engine temperature, (c) engine operating speed, and (d) engine cranking and startup are not monitored by an operator during automatic operation.

  • Page 20: Operating Instructions

    SECTION 1.6 PART 1 GENERAL INFORMATION OPERATING INSTRUCTIONS CONTROL PANEL 2. OFF Position: a. Set the switch to OFF to stop an operating engine. GENERAL: b. To prevent an automatic startup from occurring, See Figure 1. The front face of this panel mounts (a) an Auto-Off-Manual switch, (b) a 15 amp fuse, set the switch to OFF.
  • Page 21 SECTION 1.6 PART 1 GENERAL INFORMATION OPERATING INSTRUCTIONS PROTECTION SYSTEMS: MANUAL TRANSFER TO "STANDBY" AND MANUAL STARTUP Unlike an automobile engine, the generator may have to run for long periods of time with no operator present to monitor engine conditions. For that reason, To transfer electrical loads to the "Standby"...

  • Page 22: Automatic Operating Parameters

    SECTION 1.7 PART 1 GENERAL INFORMATION AUTOMATIC OPERATING PARAMETERS INTRODUCTION PHASE 4-ENGINE STARTUP AND RUNNING: The circuit board senses that the engine is running by When the prepackaged generator is installed in receiving a voltage/frequency signal from the engine conjunction with a prepackaged transfer switch, either run windings.
  • Page 23 SECTION 1.7 PART 1 GENERAL INFORMATION AUTOMATIC OPERATING PARAMETERS AUTOMATIC OPERATING SEQUENCES CHART SEQ. CONDITION ACTION SENSOR, TIMER OR OTHER Utility source voltage is No action Voltage Dropout Sensor on circuit available. circuit board. Utility voltage dropout below A 15-second timer on circuit Voltage Dropout Sensor and 15 60% of rated voltage occurs.
  • Page 24 NOTES PART 1 GENERAL INFORMATION Page 24...
  • Page 25 TABLE OF CONTENTS PART TITLE Description and Components PART 2 Operational Analysis Troubleshooting Flow Charts Diagnostic Tests AC GENERATORS Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...
  • Page 26 SECTION 2.1 PART 2 AC GENERATORS DESCRIPTION & COMPONENTS INTRODUCTION directly coupled to the engine crankshaft (see Figure 1), and mounted in an enclosure. Both the engine and generator rotor are driven at approximately 3600 rpm, The air-cooled, pre-packaged automatic standby to provide a 60 Hz AC output.
  • Page 27 SECTION 2.1 PART 2 AC GENERATORS DESCRIPTION & COMPONENTS Wire 4 connects to the positive (+) brush and Wire 0 to the negative (-) brush. Wire 0 connects to frame ground. Rectified and regulated excitation current, as well as current from a field boost circuit, are delivered to the rotor windings via Wire 4, and the positive (+) brush and slip ring.
  • Page 28 SECTION 2.1 PART 2 AC GENERATORS DESCRIPTION & COMPONENTS Figure 5. Excitation Circuit Breaker VOLTAGE REGULATOR: Figure 6. Typical Voltage Regulator A typical voltage regulator is shown in Figure 6. Unregulated AC output from the stator excitation A single red lamp (LED) glows during normal winding is delivered to the regulator's DPE terminals, operation.
  • Page 29 SECTION 2.2 PART 2 AC GENERATORS OPERATIONAL ANALYSIS ROTOR RESIDUAL MAGNETISM Field boost voltage is reduced from that of battery voltage by the resistor action and, when read with a The generator revolving field (rotor) may be DC voltmeter, will be approximately 9 or 10 volts DC. considered to be a permanent magnet.
  • Page 30 SECTION 2.2 PART 2 AC GENERATORS OPERATIONAL ANALYSIS OPERATION Initially, the AC power winding voltage sensed by the regulator is low. The regulator reacts by increasing the flow of excitation current to the rotor until voltage STARTUP: increases to a desired level. The regulator then maintains the desired voltage.
  • Page 31 SECTION 2.3 PART 2 AC GENERATORS TROUBLESHOOTING FLOWCHARTS GENERAL Use the “Flow Charts” in conjunction with the detailed The first step in using the flow charts is to correctly instructions in Section 2.4. Test numbers used in the identify the problem. Once that has been done, locate flow charts correspond to the numbered tests in the problem on the following pages.
  • Page 32 SECTION 2.3 PART 2 AC GENERATORS TROUBLESHOOTING FLOWCHARTS Page 32...
  • Page 33 SECTION 2.3 PART 2 AC GENERATORS TROUBLESHOOTING FLOWCHARTS Page 33...
  • Page 34 SECTION 2.3 PART 2 AC GENERATORS TROUBLESHOOTING FLOWCHARTS Page 34...
  • Page 35 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS INTRODUCTION PROCEDURE: The generator main circuit breaker is located on the This section is provided to familiarize the service control panel. If loads are not receiving power, make technician with acceptable procedures for the testing sure the breaker is set to "On"...

  • Page 36: Diagnostic Tests

    SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS TEST 2- CHECK AC OUTPUT VOLTAGE and the excitation current cannot pass. On current units with air-cooled engine, "field boost" current flow is available to the rotor only during DISCUSSION: engine cranking. A volt-ohm-milliammeter (VOM) may be used to check the generator output voltage.
  • Page 37 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS TEST 4- FIXED EXCITATION TEST /ROTOR AMP DRAW TEST DISCUSSION: Supplying a fixed DC current to the rotor will induce a magnetic field in the rotor. With the generator running, this should create a proportional voltage output from the stator windings.
  • Page 38 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS 8. Set the Auto-Off-Manual switch to MANUAL. Once the RESULTS: engine starts, record the AC voltage. If CONTINUITY was not measured across each wire, repair or replace the wires as needed. 9. Set the Auto-Off-Manual switch to OFF. Reconnect Wire 11 and Wire 22.
  • Page 39 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS 4. Make sure all off the disconnected leads are isolated from each other and are not touching the frame during the test. 5. Set a VOM to its "R x 1" scale and zero the meter. 6.
  • Page 40 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS TEST WINDINGS FOR A SHORT TO GROUND: connector, connect the other test lead to Wire 11 at the voltage regulator. Continuity should be measured. 13.Make sure all leads are isolated from each other and are not touching the frame.
  • Page 41 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS RESULTS: Pin 9 of the C2 connector. Test this wire for an open condition. Remove wire 0 from the brush assembly. 1. If the resistance reading is correct, check your VOM Connect one meter test lead to wire 0. Connect the meters fuse and repeat Test 4.
  • Page 42 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS TEST 11 - CHECK AC OUTPUT FREQUENCY RESULTS: 1. Repair, replace or reconnect wires as necessary. DISCUSSION: 2. Replace any damaged slip rings or brush holder. The generator AC frequency is proportional to the 3.
  • Page 43 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS 3. Start the generator; let it stabilize and warm up at no- 3. With governor arm at wide open throttle position, rotate load. governor shaft fully clockwise. Tighten clamp bolt to 84 inch-pounds.
  • Page 44 SECTION 2.4 PART 2 AC GENERATORS DIAGNOSTIC TESTS TEST 13 - CHECK AND ADJUST voltmeter across the stator AC power winding leads. VOLTAGE REGULATOR 2. Start the engine, let it stabilize and warm-up. 3. Apply electrical loads to the generator equal to the rated DISCUSSION: capacity of the unit.
  • Page 45 TABLE OF CONTENTS PART 3 PART TITLE Description and Components “V-TYPE” Operational Analysis Troubleshooting Flow Charts PREPACKAGED Diagnostic Tests TRANSFER SWITCHES Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...
  • Page 46 SECTION 3.1 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DESCRIPTION & COMPONENTS GENERAL ENCLOSURE The prepackaged, “V-Type” transfer switch is rated The standard prepackaged, “V-Type” transfer switch 100 amps at 250 volts maximum. It is available in 2- enclosure is a NEMA 1 type ("NEMA" stands for pole configuration only and, for that reason, is "National Electrical Manufacturer's Association").
  • Page 47 SECTION 3.1 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DESCRIPTION & COMPONENTS UTILITY contacts, and a pair of stationary STANDBY STANDBY CLOSING COIL C2: contacts. The load contacts can be connected to the Coil C2 is energized by rectified standby source utility contacts by a utility closing coil;...
  • Page 48 SECTION 3.1 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DESCRIPTION & COMPONENTS a. The 12 volts DC circuit is completed through the a. The transfer relay will de-energize, its normally- transfer relay coil and back to the generator closed contacts will close and its normally open circuit board, via Wire 23.
  • Page 49 SECTION 3.1 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DESCRIPTION & COMPONENTS delivered to a step-down transformer in the control FUSE HOLDER module assembly and the resultant reduced voltage is then delivered to the circuit board. Utility 1 and 2 The fuse holder holds two (2) fuses, designated as power is used by the circuit board as follows: fuses F1 and F2.
  • Page 50 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS OPERATIONAL ANALYSIS Figure 1 is a schematic and wiring diagram for a typical “V-Type” transfer switch. Figure 1. Wiring Diagram and Schematic Page 50...
  • Page 51 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS UTILITY SOURCE VOLTAGE AVAILABLE Figure 2 is a schematic representation of the transfer switch with utility source power available. The circuit condition may be briefly described as follows: • Utility source voltage is available to terminal lugs N1 and N2 of the transfer mechanism, transfer switch is in the UTILITY position and source voltage is available to T1, T2 and customer load.
  • Page 52 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS UTILITY SOURCE VOLTAGE FAILURE If utility source voltage should drop below a preset value, the generator circuit board will sense the dropout. That circuit board will then initiate generator cranking and startup after a time delay circuit times out. Figure 3 is a schematic representation of the transfer switch with generator power available, waiting to transfer.
  • Page 53 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS TRANSFER TO STANDBY The generator circuit board delivers 12 volts DC to the transfer relay, via terminal 194 and back to the circuit board via terminal 23. However, circuit board action holds the Wire 23 circuit open and the transfer relay remains de-energized.
  • Page 54 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS TRANSFER TO STANDBY When the standby coil is energized it pulls the transfer switch mechanism to a overcenter position towards the standby power source side, the transfer switch mechanically snaps to the standby position. On closure of the main contacts to the standby power source side, limit switches XA1 and XB1 are mechanically actuated to "arm"...
  • Page 55 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS UTILITY RESTORED Utility voltage is restored and is available to terminals N1 and N2. The utility voltage is sensed by the generators circuit board. If it is above a preset value for a preset time interval a transfer back to utility power will occur. Figure 6.
  • Page 56 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS UTILITY RESTORED, TRANSFER SWITCH DE-ENERGIZED After the preset time interval expires the circuit board will open the Wire 23 circuit to ground. The transfer relay de-energizes, it's normally closed contacts close, and utility source voltage is delivered to the utility closing coil (C1), via Wires N1A and N2A, closed Transfer Relay Contacts 1 and 7, and Limit Switch XA1.
  • Page 57 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS UTILITY RESTORED, RETRANSFER BACK TO UTILITY As the utility coil pulls the transfer switch to an OVER CENTER position, the switch mechanically snaps to Utility. On closure of the main contacts to the utility power source side, Limit Switches XA1 and XB1 are mechanically actuated to “arm”...
  • Page 58 SECTION 3.2 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES OPERATIONAL ANALYSIS TRANSFER SWITCH IN UTILITY When the transfer switch returns to the utility side, generator shutdown occurs after approximately one (1) minute. Figure 9. Transfer Switch in Utility. Page 58...
  • Page 59 SECTION 3.3 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES TROUBLESHOOTING FLOW CHARTS INTRODUCTION TO TROUBLESHOOTING The first step in troubleshooting is to correctly identify the problem. Once that is done, the cause of the problem can be found by performing the tests in the appropriate flow chart. Test numbers assigned in the flow charts are identical to test numbers in section 3.4, “Diagnostic Tests.”...
  • Page 60 SECTION 3.3 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES TROUBLESHOOTING FLOW CHARTS Page 60...
  • Page 61 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS GENERAL PROCEDURE: 1. If the generator engine has started automatically (due to Test numbers in this section correspond to the a utility power source outage) and is running, check the numbered tests in Section 3.3, "Troubleshooting Flow position of the generator main circuit breaker.
  • Page 62 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS e. Set the generator Auto-Off-Manual switch to SHOCK MAY RESULT. DO NOT PERFORM AUTO. THIS VOLTAGE TEST WHILE STANDING ON WET OR DAMP GROUND, WHILE (1) The generator should crank and start. BAREFOOT, OR WHILE HANDS OR FEET (2) When the generator starts, an "engine ARE WET.
  • Page 63 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS 3. Connect the VOM test leads across Relay Terminals 6 a. Energize the relay and the meter should indicate infinity. and 9 with the relay de-energized. The VOM should b. De-energize the relay and the VOM should read read infinity.
  • Page 64 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS using whatever means provided (such as a utility source PROCEDURE: main line breaker). With the generator shut down, the generator main circuit breaker turned OFF, and with the utility power supply to the transfer switch turned OFF, test limit DANGER: DO NOT ATTEMPT MANUAL switch XB1 as follows:...
  • Page 65 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS 5. Connect the positive (+) test lead to Wire 23 at the terminal lugs N1 and N2 of the transfer mechanism. In addition, If that source voltage is not available to terminal strip in the transfer switch.
  • Page 66 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS “Utility 1” and “Utility 2” terminals. Normal line-to-line DANGER: BE CAREFUL! HIGH AND utility source voltage should be indicated. DANGEROUS VOLTAGES ARE PRESENT AT TERMINAL LUGS WHEN THE GENERATOR IS RUNNING.
  • Page 67 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS 5. If normal utility source line-to-line voltage is NOT transfer to the "Standby" position, the limit switch should actuate to its closed position. If the switch indicated in Step 8, and is NOT indicated in Step 9, does not actuate to its closed position, retransfer back proceed to Test 32.
  • Page 68 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS 7. Disconnect Wire N1A from transfer relay (TR) terminal 4. Remove the generator control panel cover. Disconnect and connect one test lead to it. Connect the other test wire N1 and wire N2 from the interconnection terminal in lead to F1 top fuse terminal Wire N1A.
  • Page 69 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS RESULTS: 11.Connect one test lead to TX terminal 1. Connect the other test lead to TX terminal 10. INFINITY should be If a short is indicated in steps 5 through 9, repair wiring and re-test.
  • Page 70 SECTION 3.4 “V-TYPE” PREPACKAGED PART 3 TRANSFER SWITCHES DIAGNOSTIC TESTS Page 70...
  • Page 71 TABLE OF CONTENTS PART TITLE Description and Components PART 4 Operational Analysis Troubleshooting Flow Charts DC CONTROL Diagnostic Tests Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...
  • Page 72 SECTION 4.1 PART 4 3DC CONTROL DESCRIPTION AND COMPONENTS GENERAL TRANSFORMER (TX) This section will familiarize the reader with the various The control panel assembly's transformer is a step- components that make up the DC control system. down type. The line-to-line voltage from the Utility 1/Utility 2 terminals is delivered to the transformer's Major DC control system components that will be primary winding.

  • Page 73: Description And Components

    SECTION 4.1 PART 4 DC CONTROL DESCRIPTION AND COMPONENTS J1 PIN WIRE CIRCUIT FUNCTION Field boost current to rotor (about 9-10 volts DC). Low oil pressure shutdown. Automatic shutdown occurs when Wire 85 is grounded by loss of oil pressure to the LOP. Switched to ground for Transfer Relay (TR) operation.
  • Page 74 SECTION 4.1 PART 4 DC CONTROL DESCRIPTION AND COMPONENTS 15 AMP FUSE The circuit board mounts a crank relay (K1) and a run relay (K2, see Figure 4). Crank relay (K1) is energized by circuit board action during both manual This fuse protects the circuit board against excessive and automatic startup to crank the engine.
  • Page 75 SECTION 4.1 PART 4 DC CONTROL DESCRIPTION AND COMPONENTS GROUND TERMINAL NEUTRAL BLOCK TRANSFORMER (TX) TERMINAL STRIP STARTER CONTACTOR VOLTAGE REGULATOR RELAY (SCR) (V-TWINS ONLY) BATTERY CHARGER BATTERY CHARGE RELAY (BCR) CIRCUIT BREAKER "DPE" (CB2) 4-TAB TERMINAL BLOCK (TB) GROUND TERMINAL PRINTED CIRCUIT BOARD SET EXERCISE SWITCH (SW2) ACCESSORY OUTLET...

  • Page 76: Operational Analysis

    SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS INTRODUCTION UTILITY SOURCE VOLTAGE AVAILABLE This "Operational Analysis" is intended to familiarize See Figure 1, above. The circuit condition with the the service technician with the operation of the DC Auto-Off-Manual switch set to AUTO and with "Utility" control system on prepackaged units with air-cooled source power available can be briefly described as engine.
  • Page 77 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS • "Utility" voltage is delivered to the primary winding • Battery output is delivered to the circuit board with of a sensing transformer (TX), via transfer switch the Auto-Off-Manual switch (SW1) set to AUTO, as wires N1/N2, fuses F1/F2, connected wiring, and shown.
  • Page 78 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS INITIAL DROPOUT OF • The circuit board constantly senses for an acceptable "Utility" source voltage, via transfer UTILITY SOURCE VOLTAGE switch fuses F1/F2, transfer switch "Utility 1/Utility 2" terminals, connected wiring, control panel "Utility Refer to Figure 2, above.
  • Page 79 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS • Should "Utility" voltage drop below approximately • The Auto-Off-Manual switch is shown in its AUTO 60 percent of the nominal source voltage, a 15- position. Battery voltage is available to the circuit second timer on the circuit board will turn on.
  • Page 80 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS UTILITY VOLTAGE DROPOUT / ENGINE seconds. Thus, the engine will crank cyclically for 7 second crank-rest cycles. This cyclic cranking will CRANKING continue until either the engine starts or until about ninety (90) seconds of crank-rest cycles have •...
  • Page 81 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS • When the circuit board's run relay (K2) energizes, • During cranking, Wire 4 supplies 2-3 VDC (8-9 VDC 12 volts DC is delivered to a fuel solenoid (FS), via isolated) to the rotor for field flash. Wire 14.

  • Page 82: Engine Startup And Running

    SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS ENGINE STARTUP AND RUNNING • An AC voltage/frequency signal is delivered to the circuit board from the generator engine run winding, via Wire 66A. When AC frequency reaches With the fuel solenoid open and ignition occurring, the approximately 30 Hz, the circuit board (a) engine starts.
  • Page 83 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS • The "engine warm-up timer" will run for about 15 • Generator AC output is available to transfer switch seconds. When this timer finishes timing, board terminal lugs E1/E2 and to the normally open action will initiate transfer to the "Standby"...
  • Page 84 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS INITIAL TRANSFER TO THE "STANDBY" transfer switch. This 12 volts DC circuit is completed back to the board, via transfer relay SOURCE terminal B, and Wire 23. However, circuit board action holds the Wire 23 circuit open to ground and The generator is running, the circuit board's "engine the transfer relay (TR) is de-energized.
  • Page 85 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS XB1, Wire B, and a bridge rectifier. The standby closing coil energizes and the main current carrying contacts of the transfer switch are actuated to their 'Standby" source side. • As the main contacts move to their "Standby" source side, a mechanical interlock actuates limit switch XB1 to its open position and limit switch XA1 to its "Utility"...
  • Page 86 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS UTILITY VOLTAGE RESTORED / RE- • At the end of fifteen (15) seconds, the "retransfer time delay" will stop timing and circuit board action TRANSFER TO UTILITY will open the Wire 23 circuit to ground. The transfer relay (TR) will then de-energize.
  • Page 87 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS position past "Neutral" and spring force closes them to their "Utility" side. "Load" terminals are now powered by the "Utility" source. • Movement of the main contacts to 'Utility" actuates limit switches XA1/XB1. XA1 opens and XB1 actuates to its "Standby"...

  • Page 88: Engine Shutdown

    SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS ENGINE SHUTDOWN • The DC circuit to Wire 14 and the fuel solenoid (FS) will be opened. The fuel solenoid (FS) will de- energize and close to terminate the engine fuel Following retransfer back to the "Utility" source, an supply.
  • Page 89 SECTION 4.2 PART 4 DC CONTROL OPERATIONAL ANALYSIS • The battery charge relay (BCR) connected to Wire 14 will be de-energized. This will cause transformer (TX) voltage to power the battery charger again. • Circuit board action will connect the engine's ignition shutdown module (ISM) to ground, via Wire 18, circuit board Pin 13, and Wire 0.
  • Page 90 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Page 90...
  • Page 91 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Page 91...
  • Page 92 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Page 92...
  • Page 93 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Page 93...
  • Page 94 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Page 94...
  • Page 95 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Page 95...
  • Page 96 SECTION 4.3 PART 4 DC CONTROL TROUBLESHOOTING FLOW CHARTS Problem 17 - 7.5 Amp Fuse (F2) Blown THE 12 VDC ACCESSORY OUTLET IS CAPABLE OF DELIVERING A MAXIMUM OF 7.5 AMPS. IF THE ACCESSORY TO BE USED THROUGH THIS CIRCUIT DEMANDS TOO MUCH POWER, THE FUSE THAT PROTECTS THIS CIRCUIT WILL OPEN.
  • Page 97 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS INTRODUCTION TEST 42 - TRY A MANUAL START Perform these "Diagnostic Tests" in conjunction with DISCUSSION: the "Troubleshooting Flow Charts" of Section 4.3. The first step in troubleshooting for an "engine won't The test procedures and methods presented in this crank"...
  • Page 98 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS TEST 44- CHECK WIRE 15/15A/17/239 PROCEDURE: VOLTAGE Disconnect all wires from switch terminals, to prevent interaction. Then, use a volt-ohm-milliammeter (VOM) to test for continuity across switch terminals as shown DISCUSSION: in the following chart. Reconnect all wires and verify correct positions when finished.
  • Page 99 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS TEST 45- CHECK 15 AMP FUSE switch Terminal 4, Wire 17/178. Connect the negative (-) test lead to a clean frame ground. Battery voltage should be measured. DISCUSSION: The 15 amp fuse is located on the generator console. 8.
  • Page 100 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS An average reading of 1.170 indicates the battery is 25% charged. C. Test Battery Condition: 1. If the difference between the highest and lowest reading cells is greater than 0.050 (50 points), battery condition has deteriorated and the battery should be replaced.
  • Page 101 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 2. Connect the positive (+) meter test lead to the Wire 13 attaches (see Figure 6 or 7). Connect the common (-) connector. Connect the negative (-) meter test lead to a test lead to frame ground.
  • Page 102 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS RESULTS: crank, check for mechanical binding of the engine or rotor. 1. If battery voltage was indicated in Step 1, but not in Step 2b, replace the starter contactor. If engine turns over slightly, go to Test 62 “Check and Adjust Valves.”...
  • Page 103 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS Figure 13. Tachometer Figure 11. Check Pinion Gear Operation TEST BRACKET: (Single Cylinder) A starter motor test bracket may be made as shown in Figure 14. A growler or armature tester is available TOOLS FOR STARTER PERFORMANCE TEST: from an automobile diagnostic service supplier.
  • Page 104 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 4. A starter motor in good condition will be within the • The gaseous fuel system must be properly tested for leaks following installation and periodically following specifications: thereafter. No leakage is permitted. Leak test Single Cylinder V-twin methods must comply strictly with gas codes.
  • Page 105 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS TEST 52 - TEST FUEL SOLENOID a. The circuit board's crank and run relays should energize and the engine should crank and start. Note: This test is for fuel regulators equipped with b.
  • Page 106 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS connection and the Fuel Solenoid terminal. If 2. Replace the solenoid if it does not actuate. CONTINUITY was measured in Step 6, proceed to Test 52 or test 54 depending on the model. TEST 55 - CHECK FOR IGNITION SPARK TEST 54 - CHECK FUEL SOLENOID DISCUSSION:...
  • Page 107 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 3. Attach the spark plug lead to the spark tester terminal. PROCEDURE: 1. Remove spark plugs and clean with a penknife or use a 4. Crank the engine while observing the spark tester. If wire brush and solvent.
  • Page 108 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 3. Crank the engine until there is no further increase in other test lead to a clean frame ground. INFINITY pressure. should be measured. 4. Record the highest reading obtained. 5. Reconnect the J1 connector to the circuit board. 5.
  • Page 109 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS Figure 25. Diode Failure Diagnosis 11.Connect the positive (+) test lead to Connector ”A” (as shown in Figure 26). Connect the negative (-) test lead to Connector “B.” a. If meter “Beeps” once and displays voltage Figure 23.
  • Page 110 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 12.Now repeat Step 11 with the negative meter test lead connected to Connector “C” (Figure 26). 13.Now check the flywheel magnet by holding a screwdriver at the extreme end of its handle and with its point down. When the tip of the screwdriver is moved to within 3/4 inch (19mm) of the magnet, the blade should be pulled in against the magnet.
  • Page 111 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS a. Set a VOM to its "R x 1" scale and zero the PROCEDURE: meter. 1. Verify that the engine has cooled down (engine block is b. Connect the VOM test leads across the switch cool to the touch).
  • Page 112 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 9. Heat the oil in the container. When the thermometer stud with the allen wrench and tighten the rocker arm reads approximately 274°-294° F. (134°-146° C.), the jam nut. Torque the jam nut to 174 inch pounds. After VOM should indicate CONTINUITY.
  • Page 113 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 5. When the highest frequency is reached, maximum power has been set. From this point turn the adjustment screw(s) 1/4 turn counterclockwise. The regulator is now DO NOT MAKE ANY UNNECESSARY set. ADJUSTMENTS.
  • Page 114 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS TEST 65 - CHECK TRANSFORMER (TX) RESULTS: VOLTAGE OUTPUT 1. If line-to-line voltage was not measured in Step 2, go to Problem 7, Section 3.3. DISCUSSION: 2. If correct voltage was measured in Step 2, and no The Transformer (TX) is a “step down”...
  • Page 115 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS RESULTS: 1. Replace the battery charge relay if it fails any of the steps in this chart. 2. If the BCR tests good, but still does not function during generator operation, check Wire 14 and Wire 0 connected to the BCR.
  • Page 116 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 5. Connect one meter test lead to Wire 0 at the three pin connector. Connect the other test lead to the ground terminal. CONTINUITY should be measured. RESULTS: 1. If CONTINUITY was not measured in Step 4, repair or replace Wire 13A between the battery charger and fuse 2.
  • Page 117 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS RESULTS: 3. Set a VOM to measure AC voltage. 1. If CONTINUITY is not measured in Step 5, repair or 4. Connect one meter test lead to Pin Location J1-14 (Wire replace Wire 66A between Connector C2 and 225).
  • Page 118 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 6. Connect one meter test lead to Wire 351 (previously 1. If CONTINUITY was measured in Step 5, a short exists between Wire 178 and Wire 183. Repair or replace Wire removed from SW2). Connect the other meter test lead 178 and/or Wire 183 between terminal connector and to Pin Location J3 (Wire 351).
  • Page 119 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS J1-4, Wire 194 If CONTINUITY was measured, go replace the SCR or SC. Coil resistance for the SCR is to Step 4. Average nominal 155 ohms. Coil resistance for the SC is 4 ohms. If coil resistance reading: 110-120 ohms.
  • Page 120 SECTION 4.4 PART 4 DC CONTROL DIAGNOSTIC TESTS 3. Hold the Set Exercise switch until the generator starts (approximately 10 seconds) and then release. The generator will start and run for approximately 12 minutes and then shutdown on it’s own. The exerciser will then be set to start and run at that time of that day each week.
  • Page 121 TABLE OF CONTENTS PART TITLE System Functional Tests PART 5 OPERATIONAL TESTS Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...

  • Page 122: System Functional Tests

    SECTION 5.1 OPERATIONAL TESTS PART 5 AND ADJUSTMENTS SYSTEM FUNCTIONAL TESTS INTRODUCTION TRANSFER SWITCH MAY RESULT IN DANGEROUS AND POSSIBLY LETHAL Following home standby electric system installation ELECTRICAL SHOCK. and periodically thereafter, the system should be tested Functional tests of the system include the 4.
  • Page 123 SECTION 5.1 OPERATIONAL TESTS PART 5 AND ADJUSTMENTS SYSTEM FUNCTIONAL TESTS using the means provided (such as a utility main line 13.Set the generator Auto-Off-Manual switch to OFF. The circuit breaker). engine should shut down. NOTE: It is important that you do not proceed DANGER until you are certain that generator AC voltage and frequency are correct and within the stated...
  • Page 124 SECTION 5.1 OPERATIONAL TESTS PART 5 AND ADJUSTMENTS SYSTEM FUNCTIONAL TESTS 10.Connect an accurate AC voltmeter and a frequency With the Auto-Off-Manual switch at “AUTO,” the engine should crank and start when the utility source meter across terminal lugs E1 and E2. Voltage should power is turned off.
  • Page 125 TABLE OF CONTENTS PART TITLE Major Disassembly PART 6 DISASSEMBLY Air-cooled, Prepackaged Automatic Standby Generators Models: 6 kW NG, 7 kW LP 12 kW NG, 12 kW LP 13 kW NG, 15 kW LP...

  • Page 126: Major Disassembly

    SECTION 6.1 PART 6 DISASSEMBLY MAJOR DISASSEMBLY MAJOR DISASSEMBLY STATOR/ROTOR/ENGINE REMOVAL: For stator removal, follow Steps 1-14. For rotor removal, follow Steps 1-15. For Engine removal follow Steps 1-16. 1. Remove door. 2. Set the Auto-Off-Manual switch to OFF. Disconnect battery cables.
  • Page 127 SECTION 6.1 PART 6 DISASSEMBLY MAJOR DISASSEMBLY Remove the two bolts attaching the muffler side cover to the back enclosure panel. They are located in the center of the back panel. Remove the alternator panel and muffler side cover as an assembly. Figure 5.
  • Page 128 SECTION 6.1 PART 6 DISASSEMBLY MAJOR DISASSEMBLY Using a 10mm socket, remove the six (6) nuts attaching the control panel to the side/back enclosure and the engine divider panel. Remove the two (2) nuts connected to the back enclosure located on the top side of control panel.
  • Page 129 TABLE OF CONTENTS DWG # TITLE 0D9014-B WIRING DIAGRAM, 7 KW HSB PART 7 0D9015-B SCHEMATIC, 7 KW HSB 0D9016-B WIRING DIAGRAM, 12 & 15 KW HSB ELECTRICAL 0D9017-B SCHEMATIC, 12 & 15 KW HSB 0E7687A WIRING DIA., 8 CIRCUIT LOAD CENTER 0E7815A SCHEMATIC, 8 CIRCUIT LOAD CENTER DATA...
  • Page 130 WIRING DIAGRAM, 7 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9014 (1 OF 2) DIAGRAM KEY - BRUSH ASSEMBLY BCR - BATTERY CHARGE RELAY CB2 - CIRCUIT BREAKER, ALTERNATOR EXCITATION CB3 - CIRCUIT BREAKER, EXTERNAL OUTLET, PUSH/PULL DIODE DSW - PCB MOUNTED DIP SWITCH - FUEL SOLENOID - FUSE 15 AMP - FUSE 7.5 AMP...
  • Page 131 WIRING DIAGRAM, 7 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9014 (2 OF 2) CONTROL PANEL BOX 224A 225A 224A 225A STATOR 224B 225B 224B 11 1 11 1 VOLTAGE REGULATOR N1 1 N1 1 351 1 11 1 EXTERNAL GFCI LINE...
  • Page 132 SCHEMATIC, 7 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9015 (1 OF 2) 11 1 11 1 225A 225A 224A 224A BATTERY 225B CHARGER 224B 225A 224A C2-1 BATTERY CHARGE WINDING C2-2 C2-4 11 1 ENGINE RUN C1-4 WINDING (STATOR) FIELD C1-3...
  • Page 133 SCHEMATIC, 7 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9015 (2 OF 2) 11 1 11 1 C2-6 C2-5 225A N2 2 N1 1 UTILITY 56VA INPUT 224A 12Vdc TRANSFER RELAY COIL N1 1 CUSTOMER CONNECTIONS 12VDC ACCESSORY SOCKET 120V POWER 120V...
  • Page 134 WIRING DIAGRAM, 12 & 15 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9016 (1 OF 2) DIAGRAM KEY ENGINE WIRING BCR - BATTERY CHARGE RELAY CB1 - MAIN OUTPUT BREAKER CB3 - CIRCUIT BREAKER, EXTERNAL OUTLET, PUSH/PULL BATTERY DIODE CHARGER DSW - PCB MOUNTED DIP SWITCH - FUEL SOLENOID...
  • Page 135 WIRING DIAGRAM, 12 & 15 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9016 (2 OF 2) CONTROL PANEL BOX 224A 225A 224A 225A CLOSEST TO BEARING STATOR 224B 224B 225B 225B 11 1 11 1 VOLTAGE REGULATOR N1 1 351 1 N1 1 N1 1...
  • Page 136 SCHEMATIC, 12 & 15 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9017 (1 OF 2) 11 1 11 1 225A 225A 224A 224A BATTERY 225B CHARGER 224B C2-1 BATTERY CHARGE WINDING C2-11 11 1 ENGINE RUN C1-4 WINDING (STATOR) FIELD C2-3 C1-3...
  • Page 137 SCHEMATIC, 12 & 15 KW HOME STANDBY PART 7 ELECTRICAL DATA DRAWING #0E9017 (2 OF 2) 11 1 C2-6 C2-5 240VAC 225A N1 1 UTILITY 56VA INPUT 224A 12Vdc TRANSFER RELAY COIL 12VDC ACCESSORY SOCKET CUSTOMER CONNECTIONS 120V POWER 120V WINDING 11 1 240V...
  • Page 138 WIRING DIAGRAM, 8 CIRCUIT LOAD CENTER PART 7 ELECTRICAL DATA DRAWING #0E7687A Page 138...

  • Page 139: Schematic Diagram

    SCHEMATIC, 8 CIRCUIT LOAD CENTER PART 7 ELECTRICAL DATA DRAWING #0E7815A E1 1 12Vdc TRANSER COIL TS TO OPEN GENERATOR CONTROL PANEL 240VAC OUTPUT N1 1 E1 1 E1 1 BLACK TO GENERATOR OUTPUT CIRCUIT BREAKER NEUTRAL (WHITE) NEUTRAL CONNECTION INSIDE SWITCH NEUTRAL (WHITE) 240VAC TO...
  • Page 140 WIRING DIAGRAM, 10 & 12 CIRCUIT LOAD CENTER PART 7 ELECTRICAL DATA DRAWING #07687 Page 140...
  • Page 141 SCHEMATIC, 10 & 12 CIRCUIT LOAD CENTER PART 7 ELECTRICAL DATA DRAWING #0E7815 12Vdc TRANSER COIL TS TO OPEN GENERATOR CONTROL PANEL 240VAC OUTPUT BLACK TO GENERATOR OUTPUT CIRCUIT BREAKER NEUTRAL (WHITE) NEUTRAL CONNECTION INSIDE SWITCH NEUTRAL (WHITE) 240VAC TO RED (MAIN 2) MAIN DISTRIBUTION PANEL...
  • Page 142 NOTES PART 7 ELECTRICAL DATA Page 142...

  • Page 143: Electrical Formulas

    ELECTRICAL FORMULAS TO FIND KNOWN VALUES 1-PHASE 3-PHASE KILOWATTS (kW) Volts, Current, Power Factor E x I E x I x 1.73 x PF 1000 1000 Volts, Current E x I E x I x 1.73 1000 1000 AMPERES kW, Volts, Power Factor kW x 1000 kW x 1000 E x 1.73 x PF...
  • Page 144 Part No. 0F4676 Revision * (02/25/05) Catalog No. DMASPAS.07.1 Printed in U.S.A.

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