20kW Standby generator
Operation and Parts Manual
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES
MODEL MQP20P
Diesel engine exhaust and some of
proposition 65 warning
Page
Inspection/Setup
Table of Contents
Component Drawings
Installation
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DaNgeR
Safety Information
SaFeTY MeSSageS
SaFeTY SYMBOlS
NeveR lubricate components or attempt service on a running machine
geNeRal SaFeTY
geNeRaTOR SaFeTY
Safety Information
DaNgeR
eNgiNe SaFeTY
Safety Information
DaNgeR
Fuel SaFeTY
TOWiNg SaFeTY
Safety Information
death
eleCTRiCal SaFeTY
grounding Safety
power Cord/Cable Safety
DaNgeR
BaTTeRY SaFeTY
eNviRONMeNTal SaFeTY
Safety Information
Battery
SPECIFICATIONS
Model
Phase
DIMENSIONS
GENERATOR GROUND LUG
installation
NOTE GROUND LUG MUST BE INSTALLED BY USER
Figure 2. Typical Generator Grounding Application
Generator Grounding
Outdoor Installation
Indoor Installation
Mounting
Camlok outlet box panel
general information
Generator
ElectrONIC Governor System
principle of operation
VOLTAGE REGULATION
Engine
DESCRIPTION
major components
Table 4. Generator Major Components
ITEM NO
DESCRIPTION
basic engine components
Table 5. Basic Engine Components
Figure 5. Digital Controller Components
digital controller panel
Single Phase
connector outlet box and main circuit breaker
outlet connectors
MAIN CIRCUIT BREAKER
Generator Amperage
Single Phase Load
Table 6. Power Factor By Load
load application/generator output
Fuel Check
inspection/setup
Refueling Procedure
Lubrication Oil
inspection/setup
when heated
ONLY use #2 diesel fuel when refueling
DO NOT fill on unlevel ground
Coolant Antifreeze/summer coolant
Cleaning the Radiator
Air Cleaner
Battery
Piping and Hose Connection
Battery Cable Installation
Wiring
Alternator
Starting Auto Mode
startup
Before Starting
Starting Manual
startup
Normal Shutdown Procedure
emergency Shutdown Procedure
CLOSING THE ENCLOSURE DOOR
Figure 21. Battery Charger and Jacket Water Heater Power Connections
JacketWater Heater and Internal Battery Charger
Jacket Water Heater Battery Charger Connect to external
120 VAC power source
protective devices
protective devices
CHAIN
transporting
TRANSPORTING
LIFTING
Air FILTER
maintenance
Air Filter Dust Indicator
General Inspection
Fuel Tank Inspection
Cleaning Inside the Fuel Tank
Fuel Addition
Removing Water from the Fuel Tank
Potentiometers
Radiator Cleaning
voltage regulator adjustments
Flushing Out Radiator and Replacing Coolant
maintenance
Adjustment Procedure
Generator Storage
Possible Problem
Troubleshooting Generator
Troubleshooting Generator
Symptom
Possible Problem
Troubleshooting engine
Troubleshooting Engine
Symptom
Possible Problem
troubleshooting controller
Troubleshooting MEC20 Controller
Symptom
Possible Problem
Troubleshooting MEC20 Controller - continued
troubleshooting controller
Symptom
Possible Problem
troubleshooting VOLTAGE REGULATOR
Troubleshooting Voltage Regulator
Symptom
K1 B1
MAINTENANCE PARTS LOCATOR
Figure 28. Maintenance Parts Locator
J1 E1
CONTROL BOX
generator Wiring Diagram single phase
GENERATOR
generator Wiring Diagram single phase
SADDLE BOX
CIRCUIT BREAKER BOX
generator Wiring Diagram three phase
505 505
generator Wiring Diagram three phase
505 K1
paRT NO. Column
SaMple paRTS liST
Explanation of Code in Remarks Column
NO. Column
Description
Suggested Spare Parts
MQP20P with PERKINS 404D-22 DIESEL ENGINE 1 to 3 units
Housing assy
HOUSING ASSY., PAINTED WHITE, W/ INSULATION
PART NAME
REMARKS
Housing assy
Engine and Generator Mounting assy
EE46389
Engine and Generator Mounting assy
PART NAME
To TB1-20
Fuel assy
CAP, FUEL TANK, LOCKING 2IN NPT
Fuel assy
PART NAME
REMARKS
To External
Electrical assy
Power Source
Electrical assy
CHARGER, BATTERY, AUTO, FLOAT EQ
BATTERY, MAINT. FREE, GROUP 24
MAGNETIC PCKUP W/ WIRES RED/BLCK
Jacket Water HEater assy
To External Power Source
EE40205
Jacket Water HEater assy
PART NAME
REMARKS
Solenoid assy
EE2916
Solenoid assy
PART NAME
REMARKS
Radiator Connection
Radiator assy
REMARKS
KIT, WIRING HARNESS COOLANT SENSR
Radiator assy
PART NAME
Air filter assy
REMARKS
NOT SERVICED SEPARATELY
Air filter assy
PART NAME
Engine exhaust assy
EE54297
Engine exhaust assy
PART NAME
Engine Oil assy
VALVE, LOCKING BALL, BRASS, 1/2IN FNPT
Engine Oil assy
PART NAME
REMARKS
control panel assy
FRAME, BOX, CONTROL AND CIRCUIT BREAKER
control panel assy
PART NAME
REMARKS
To Engine
Controller assy
CONTROLLER, SPEED UNIT, 12/24V
Controller assy
PART NAME
RELAY, 8 BLADE DPDT, 12VDC, 10A
saddlebox assy
BLOCK, MIDGET FUSE TYPE, 3 POLE
saddlebox assy
PART NAME
REMARKS
Circuit breaker assy
BUS BAR, LONG, 1/4 IN COPPER BAR
Circuit breaker assy
PART NAME
REMARKS
Circuit
camlok assy
11 12 13 14
Ground
BOX, CONTINUOUS HINGE, HOFFMAN
Camlok assy
PART NAME
REMARKS
FReigHT pOliCY
Terms and Conditions of Sale - Parts
SpeCial expeDiTiNg SeRviCe
paYMeNT TeRMS
Page
Warranty Department
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PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING
Service Department