Multiquip MQP20P manual Troubleshooting Voltage Regulator

Page 40

troubleshooting (VOLTAGE REGULATOR)

Troubleshooting (Voltage Regulator)

Symptom

Possible Problem

Solution

 

Residual Voltage at regulator power input

Check wiring diagram for proper connections.

 

Flash generator speed. Refer to field flashing section

 

wires 3 and 4 below 10 VAC?

in generator manual.

 

 

 

 

Reduce acceleration time.

 

Accelerated time to rated speed too long?

Interrupt power input to regulator after achieving rated

Residual Voltage - No output

 

speed.

Field leads F1, F2 not connected?

Connect field leads F1, F2.

 

 

 

 

 

Power input leads not connected?

Connect power input leads 3, 4.

 

 

 

 

Blown or missing fuse?

Replace fuse.

 

 

 

 

Defective regulator?

Replace regulator.

 

 

 

 

Defective generator?

Consult generator manual.

 

 

 

 

Incorrect connections?

Check wiring diagram for proper connections.

 

 

 

 

Voltage Adjust turned down?

Rotate Voltage Adjust clockwise until the desired

 

voltage is reached.

Output Voltage Low

 

Remote Voltage Adjust is turned down?

Rotate remote Voltage Adjust clockwise until the

 

 

desired voltage is reached.

 

 

 

 

 

 

Defective regulator?

Replace regulator.

 

 

 

 

Voltage Adjust turned too high?

Rotate Voltage Adjust counterclockwise until the

 

desired voltage is reached.

Output Voltage High

 

Remote Voltage Adjust is turned too high?

Rotate remote Voltage Adjust counterclockwise until

 

 

the desired voltage is reached.

 

 

 

 

 

Output Voltage High - No

Defective regulator?

Replace regulator.

Adjustment

 

 

Remote Voltage Adjust

Voltage adjust wire connected backwards?

Reverse the wiring of the remote Voltage Adjust.

Operates Backwards

 

 

Generator Output Voltage

Stability Adjust not set properly?

Rotate the Stability Adjust clockwise until hunting stops.

Hunting

 

 

Poor regulation

Defective regulator?

Replace regulator.

page 40 —MQP20P STANDBY GENERATOR • operation and parts manual — rev. #1 (11/28/11)

Image 40
Contents Model MQP20P Proposition 65 warning Diesel engine exhaust and somePage Table of Contents MQP20P Standby GeneratorChoose from three easy options Safety Information SaFeTY MeSSageSGeNeRal SaFeTY GeNeRaTOR SaFeTYENgiNe SaFeTY Restricted. If the air fl ow isFuel SaFeTY TOWiNg SaFeTYGrounding Safety EleCTRiCal SaFeTYPower Cord/Cable Safety BaTTeRY SaFeTY ENviRONMeNTal SaFeTYSpecifications Dimensions Installation Typical Generator Grounding ApplicationOutdoor Installation Indoor InstallationMounting Generator GroundingGenerator General informationCamlok outlet box panel Engine Principle of operationElectrONIC Governor System Major components Item no DescriptionBasic engine components Basic Engine ComponentsDigital controller panel Microprocessor Engine Controller MECConnector outlet box and main circuit breaker Outlet connectorsLoad application/generator output Single Phase LoadGenerator Amperage Inspection/setup Refueling ProcedureLubrication Oil Fuel CheckFuel Expands Cleaning the Radiator Air Cleaner Fan Belt TensionBattery Coolant Antifreeze/summer coolantBattery Cable Installation WiringAlternator Piping and Hose ConnectionStarting Auto Mode StartupBefore Starting Starting ManualNormal Shutdown Procedure Emergency Shutdown ProcedureJacketWater Heater and Internal Battery Charger Battery Charger and Jacket Water Heater Power ConnectionsProtective devices Protective devicesTransporting TransportingAir Filter Dust Indicator MaintenanceGeneral Inspection Air Filter Cleaning Inside the Fuel Tank Fuel AdditionRemoving Water from the Fuel Tank Fuel Tank InspectionRadiator Cleaning Voltage regulator adjustmentsFlushing Out Radiator and Replacing Coolant PotentiometersAdjustment Procedure Generator StorageTroubleshooting Generator Troubleshooting GeneratorTroubleshooting engine Troubleshooting EngineTroubleshooting controller Troubleshooting MEC20 ControllerImproper calibration? Troubleshooting Voltage Regulator Troubleshooting Voltage RegulatorMaintenance Parts Locator Generator Wiring Diagram single phase Control BOXCircuit Breaker BOX Generator Wiring Diagram three phase 505 K1 Explanation of Code in Remarks Column Suggested Spare Parts MQP20P with Perkins 404D-22 Diesel Engine 1 to 3 unitsHousing assy Part Name Engine and Generator Mounting assy GENERATOR, 30KW Fuel assy Part Name QTY Remarks Electrical assy BOLT, BATTERY, 10.38 Jacket Water HEater assy BRACKET, MOUNTING, Heater Solenoid assy BRACKET, Starter Solenoid Radiator assy Guard Air filter assy Cover Engine exhaust assy Exhaust Flex Engine Oil assy OIL Filler CAP Control panel assy PANEL, FRONT, Control Panel Controller assy MODULE, Output Expan MEC 2/20 W/CABLE Saddlebox assy Phase Units Circuit breaker assy Ground Housing Camlok assyCOVER, HINGED, Black Terms and Conditions of Sale Parts FReigHT pOliCYPage HERE’S HOW to GET Help