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OPEratIOn anD PartS ManuaL ® MODEL MQP20P 20kW StanDby gEnEratOr (PErkInS 404D-22 DIESEL EngInE) Revision #1 (11/28/11) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
Generator Wiring Diagram (Three Phase) ..44-45 Explanation Of Code In Remarks Column..... 46 NOTICE Suggested Spare Parts ......... 47 Specifications and part numbers are subject to change without notice. page 4 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
All orders are treated as Standard Orders and will ship the same day if received prior to 3PM PST. We aCCepT all MaJOR CReDiT CaRDS! MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 5...
COulD result in DeaTH or SeRiOuS iNJuRY. CauTiON Indicates a hazardous situation which, if not avoided, COulD result in MiNOR or MODeRaTe iNJuRY. NOTICE Addresses practices not related to personal injury. page 6 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
alWaYS store equipment properly when it is not being used. Equipment should be stored in a clean, dry location out of the reach of children and unauthorized personnel MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 7...
NeveR touch the hot exhaust manifold, local Health and Safety Administrator. muffl er or cylinder. Allow these parts to cool before servicing equipment. page 8 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
Use the trailer’s swivel jack to adjust the trailer height to alWaYS shutdown engine before transporting a level position while parked. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 9...
Inspect for cuts in the insulation. NeveR grab or touch a live power cord or cable with wet hands. The possibility exists of electrical shock, electrocution or death. page 10 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
alWaYS disconnect the NegaTive battery terminal before performing service on the generator. alWaYS keep battery cables in good working condition. Repair or replace all worn cables. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 11...
17.5 in. (444.5 mm.) 73.06 in. (1855.7 mm.) 15 in. (381 mm.) 62 in. (1574.8 mm.) 54.06 in. (1373.1 mm.) 82.5 in. (2095.5 mm.) 35.5 in. (901.7 mm.) MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 13...
NOTE: GROUND LUG GROUND MUST BE INSTALLED BY USER CONNECT TO BUILDING GROUND GROUND CABLE 8 FT. MINIMUM REFERENCE NEC 250-52(C) Figure 2. Typical Generator Grounding Application page 14 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
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The generator must sit at least 6 inches above the floor or grade level (in accordance to NFPA 110, Chapter 5-4.1). MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 15...
• Low Coolant Level Neutral (NEUT.) - White • Spare Programmable Digital Faults LEG 1 - Black LEG 2 - Red LEG 3 - Blue page 16 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
DC field voltage to the exciter stator ± 0.25%. resulting in a controlled generator terminal voltage. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 17...
The LED will 16. vOlTage aDJuST — This screwdriver adjustable light when in RUN mode. potentiometer is used to fine tune the generator output voltage. page 20 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
Neutral Green Black White White Black Leg 3 (Blue) Blue Circuit Breaker Black Blue Three Phase Blue Figure 6. Camlok Box and Circuit Breaker Connections MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 21...
100 ft. 1800 3600 150 ft. 100 ft. 65 ft. 2400 4800 125 ft. 75 ft. 50 ft. CAUTION: Equipment damage can result from low voltage page 22 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 23...
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2. Unlatch and remove the cabinet door of the generator. Remove fuel cap and fill tank (Figure 9). Fuel EXPANDS when heated DIESEL FUEL Figure 9. Fueling the Generator Figure 11. Fuel Expansion page 24 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
Before charging the battery with an external electric source, Periodic cleaning/replacement is necessary. Inspect it in be sure to disconnect the battery cables. accordance with the perkins engine Owner’s Manual. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 25...
Pay close attention to the polarity when connecting the battery. CauTiON Inadequate battery connections may cause poor starting of the generator, and create other malfunctions. page 26 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
When the generator is placed in the auTO mode, the period must be extended to 2-4 minutes. engine glow plugs will be warmed and the engine will start automatically. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 27...
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2. If access to the controls or other components is necessary while the engine is running, make sure the door is not left open for an extended period of time. page 28 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
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Connect to external 120 VAC power source Figure 21. Battery Charger and Jacket Water Heater Power Connections MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 29...
Before inspecting or troubleshooting the generator, press the OFF button on the Digital Controller. Place all circuit breakers in the OFF position and allow sufficient time for adequate cooling. page 30 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
2. Secure the generator with chains through the lifting eyes on the fuel tank. See Figure 22. LIFTING CHAIN TYPICAL TIE-DOWN APPLICATION Figure 22. Transporting On A Flatbed Truck MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 31...
Replace air filter if rips or tears are detected while cleaning. Air Filter Element air Filter Dust indicator Figure 23. Air Filter/Indicator The air filter indicator (Figure 23) is attached to the air filter. page 32 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
Run the engine for a while and check for leaks before adding more oil if needed. Clean excessive Figure 24. Fuel Tank Cleaning oil from engine. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 33...
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Figure 27. Voltage Regulator Potentiometers Coarse voltage adjust — A screwdriver adjustable potentiometer on the front of the voltage regulator page 34 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
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3. Turn Stability Adjust potentiometer fully clockwise. 4. Set the remote Voltage Adjust to the center position. 5. Connect the positive lead of a 100 VDC voltmeter to MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 35...
Check load and repair. Over current? Confirm load requirements and reduce. Circuit Breaker Tripped Defective circuit breaker? Check and replace. Over current Relay actuated? Confirm load requirement and replace. page 36 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
Verify that the voltage sensing wiring connection to the controller matches power distribution type (Note: standard Incorrect wiring? direct voltage connection requires that the generator's neutral is solidly grounded). page 38 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
Verify that the interconnecting ribbon cable between the Keys on faceplate do not Incorrect connection? faceplate and the main printed circuit board is connected operate. correctly. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 39...
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)
MaIntEnanCE PartS LOCatOr Refer to Figure 28 for the location of the components in the generator wiring diagram. Figure 28. Maintenance Parts Locator MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 41...
GRY/GRN GEN L3 GREY GREY GEN NEU. BLK/WHT REMOTE START REMOTE ST AR T CONT ACTS BLK/YEL CLOSE TO ST AR T IN AUTO REMOTE START page 42 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
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STAGE AND LIGHTING 5 AMP CABLE (GROUND) #4 AWG WHITE RED/YEL STAGE AND LIGHTING CABLE (NEUTRAL) GRY/RED 5 AMP CIRCUIT BREAKER BOX GRY/WHT GRY/GRN NOT USED GREY MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 43...
Multiquip. Other entries will for sale through Multiquip. be clarifi ed in the “Remarks” Column. page 46 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
1....EE10997 ....CIRCUIT BREAKER, CUTLER HAMMER, 3-POLE, 100A NOTICE Part numbers on this Suggested Spare Parts list may supersede/replace the part numbers shown in the following parts lists. MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 47...
FLANGE, ADAPTOR, ENCLOSURE TO FUEL TANK EE54214 KIT, INSULATION EE33427 MQ POWER DECAL BLACK EE33424 MQ POWER DECAL RED EE33425 MQ POWER DECAL RED EE42018 PANEL COVER MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 49...
CIrCuIt brEakEr aSSy. page 74 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
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BUS BAR, SHORT, 1/4 IN COPPER BAR ..1....1 PHASE UNITS ONLY EE41047 BUS BAR, SHORT, 1/4 IN COPPER BAR ..2....3 PHASE UNITS ONLY EE6009 CONDUIT, FITTING, 90°, NONMETALLIC EE5980 CONDUIT, 52 IN LONG MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 75...
CaMLOk aSSy. H o u s i C a m l o K i t 12 13 14 27 Ground Circuit Breaker Neutral page 76 —MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11)
RECEPTACLE, PNL MNT, FEMALE, BLUE ..1....3 PHASE UNITS ONLY EE23018 PLACARD, VINYL, LEG 3 ........1....3 PHASE UNITS ONLY EE41042 COVER, HINGED, BLUE ........1....3 PHASE UNITS ONLY MQp20p STaNDBY geNeRaTOR • OpeRaTiON aND paRTS MaNual — Rev. #1 (11/28/11) — page 77...
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