RV Generator Handbook FSC symbol Cummins Power Generation 1400 73rd Ave. NE Minneapolis, MN 55432 USA Phone 1 763 574 5000 Toll-free 1 800 888 6626 Fax 1 763 574 5298 Email www.cumminsonan.com/contact www.cumminsonan.com ©2010 Cummins Power Generation. All Rights Reserved. F-1123 7.
Table of Contents I. Important Safety Precautions 1 • Statement Regarding Exhaust Extensions 2 II. Quickstart Guide For New RV Generator Owners 3 III. Determining Which Cummins Onan Generator Model You Own 5 IV. RV Generator Operation • Load Management Basics 7 • Determining your Generator’s Power Capability 8 • Common Power Requirements Chart 8 • Operating Motor Driven Appliances 9 • Air Conditioner “Short-Cycling” 9 • Effects Of High Altitude And Extreme Temperatures Introduction V.
• Disable auto-start systems while refueling, servicing, storing or long-term parking. • Perform all service and maintenance work with the generator engine off and the positive battery cable disconnected. Moving parts can cause severe personal injury or death, and live wires could cause fatal electrocution. • Backfeed to utility systems can create serious risks to life or property.
Cummins Onan Web Sites CumminsOnan.com is the official online home for all Cummins Onan products. Visit CumminsOnan.com to learn more about our full line of RV generators for motorhomes and trailers. You can also view operator manuals online or find the dealer nearest you with our sales and service locator. Check it out today at www.cumminsonan.com. Green Label Parts are available at most Cummins Onan dealer or distributor locations.
III: Determining Which Cummins Onan Generator Model You Own Since the 2008 model year, Cummins Onan RV generator models have had new model names, to more closely align them with the Cummins model descriptor standard. Two model identifiers – Quiet Gas(QG) and Quiet Diesel(QD) were introduced. Each of these identifies which type of fuel the generator runs on and is followed by the unit’s kilowatt rating.
Determining Your Generator’s Power Capability To determine what your generator can power, use the chart below to estimate the total combined watts of all the appliances, lamps, battery chargers, air conditioners and other electrical products you typically use at the same time. (All electrical appliances and lights are labeled with their power requirements expressed in watts or amps).
Operating Motor Driven Appliances Starting And Stopping Procedures When using an appliance with a motor, turn it on and let it reach normal running speed before starting other appliances. Air conditioners, like all electric motors, can draw up to three times more power during the first few seconds of start up than during normal operation.
Managing Electrical Loads Understanding Battery Charging Times If you try to operate too many things at once, you’ll “overload” the generator. Your lights will flicker or the circuit breakers on the generator or the main electrical panel will trip open, stopping the flow of power. In addition to understanding battery charging loads, it is important to know that battery charging takes time. The chart below shows how long a 100A charger must run before reaching 100% battery charge.
Preventing Surging The electrical supply (voltage and frequency) for any appliance must remain within very close limits for it to operate properly. Changes in the electrical supply (called surging) can damage the appliances in your RV. Proper care of your generator will enable it to supply a stable power source and prevent surging. RV generator engine speed is controlled with a governing system.
Q: Why does a breaker trip and the rear air conditioner not work when I turn it on while the generator is running? A: RVs with two air conditioners typically have a 20-amp circuit breaker for the rear air conditioner and a 30-amp breaker for all other loads (including the front air conditioner). The RV may be wired with the two circuits reversed, causing the breaker to trip. The generator connections and wiring should be checked by an authorized service location.
Q: Once the generator is started, should it continue to run for a certain length of time? A: Ideally, Cummins Onan generators should run for a minimum of 30 minutes to give them a chance to warm up. Once warmed up, running your generator for five-minute intervals should be fine. But remember to turn on some appliances so the generator works while it’s running. Running it for more than 30 minutes at no load unnecessarily burns fuel and adds costly maintenance.
LP Generators Electronic Fuel Injection (EFI) Generators Q: Should I get an LP or a diesel generator for my diesel motorhome? What are the differences? Q: How reliable is the technology for electronic fuel injection? Will I have more problems? A: Each fuel option has its own advantages. LP generators generally have a lower initial cost than diesel units. In addition, they’re smaller and lighter weight, allowing for more flexibility in the floor plan of large RVs.
• Maintenance charts are printed in all Operator’s Manuals. • Check your generator exhaust system each time you start the generator. Make sure it doesn’t leak and that it extends beyond the vehicle’s perimeter. • Refer to manual for service intervals for injectors and valve adjustments that typically are recommended at 500-1,000 hours.
General Generator Maintenance Intervals General Generator Maintenance Intervals Model Service Intervals - Repeat Every Model Mthly Service Item Service Item 50 Hrs 150 Hrs 450 Hrs 500 Hrs Clean & Check Battery & Connections X3 X5 Clean Spark Arrester Change Oil/Oil Filter X1-4 Change Air Filter X2,4,5 X Change Fuel Filter X5,6 Schedule Cummins Onan Service Center Tune-up X6 X5 X1-4 X1 Change Fuel Filter - All Except Quiet Diesel 2 X X5 Change Fuel Filter X5,6 Schedule Cummins O
Do’s And Don’ts For Better Generator Performance The Do’s: DO keep your generator clean by wiping it periodically with a clean cloth. DO turn off all appliances in cold weather before starting your generator, for best long-term performance. DO check owner’s manual for periodic maintenance schedule. DO check the exhaust system regularly for damage or leaks. Make sure the exhaust pipe extends out at least one inch beyond the vehicle’s perimeter.
in the correct oil viscosity for your generator’s typical operating temperature range to provide optimum engine service. Avoid mixing different grades or brands. It’s good practice to check the oil level daily or every 8 hours of operating time. Keep the oil level as near as possible to full, but do not overfill. Overfilling may cause foaming and engine shutdown. Replace the cap tightly to prevent leakage. And if your generator has an oil filter, change it when you change the oil.
Troubleshooting Guide Fault Codes Under normal operating conditions, you can expect your Cummins Onan generator to perform reliably without problems. But if a problem does occur you may be able to isolate the cause by using the following troubleshooting chart. The genset controller provides extensive diagnostics by causing the status indicator light on the Control Switch to blink in a coded fashion. Following a fault shutdown, the indicator light will repeatedly blink 2, 3 or 4 blinks at a time.
Service Diagrams RV QG 4000/3600 LP RV QG 2500 RM LP/2800 RM RV QG 2500 LP/2800/2800 EVAP 31 RV QG 5500/7000 RV QG 5500 EFI/7000 EFI 32
Emerald Advantage™ RV QD 3200 INTERNAL MUFFLER AC OUTPUT, BATTERY POS (+) & REMOTE CONTROL CONNECTIONS GENSET STOP SWITCH COOLING & VENTILATING AIR INLET SERVICE ACCESS BATTERY NEG (‟) CONNECTION MAINTENANCE ACCESS (AIR, FUEL & OIL FILTERS) BOTTOM EXHAUST & HOT AIR DISCHARGE BOTTOM OIL DRAIN FUEL CONNECTIONS CHASSIS GROUND FIGURE 1-1.
RV QD 6000/7500/8000 HQD 810 O IL FILL IN V E R TE R C O O LA N T FILL IN V E R TE R C O O LA N T E N G IN E C O O LA N T FILL FU E L O N -O FF B A TTE R IE S CB EXH AU ST (B A C K ,S ID E ,D O W N ) A IR IN LE TS (S ID E ,B O TTO M ) O IL FILTE R FU E L FILTE R A IR FILTE R RV QD 10000/12500 C O O LA N T D R A IN H O T A IR O U TLE T SPAR K A R R E S TO R HQD 1218 O IL FILL IN V E R TE R C O O LA N T FILL IN V E R TE R C O O LA N T C Bs FU E L O N -O FF B A TTE R IE S E N G IN E C O O LA N
crack over time, allowing dirty air into the engine intake system. Over time, it only takes about a thimbleful of dirt to wear out piston rings and cylinders. (Replacement filters for some older models may not include the pre-cleaner.) Spark Plugs The use of Green Label, resistive, original equipment spark plugs will keep your Cummins Onan genset working properly. Use of other non-resistive plugs can cause generator shut downs without fault codes.
39 23" 167-1602 9" 167-1615-01 167-0272 — 140-2379 122-0800 122-0645 A-E NHE 160-1378 A-E BGEL J-P 160-1378 23" 167-1602 140-2379 148-0898 149-2333 167-0272 9" 167-1615-01 23" 167-1602 9" 167-1615-01 167-0272 149-1353 149-2279 140-2379 122-0645 Electronic Ignition G H BGE 9" 167-1615-01 167-0272 — 140-2379 122-0645 160-1378 F A-E BGE Emerald™ * At fuel pump use 149-2341-01; At carb replace filter with A026E259 adaptor LP Vapor/HGJAC 149-2279 149-2648 See note below* 140-3116
41 42 ™ G-H All Gasoline/NHM Gasoline/NHM LP/NHM Electronic Ignition Electronic Ignition Electronic Ignition Electronic Ignition 160-1349-01 160-1378 122-0836 122-0800 122-0800 122-0645 122-0645 122-0800 122-0800 122-0800 Oil Filter A B-H KY 50 Hz HDKCB HDKCA HDKBA HDKAK HDKAJ HDKAH HDCAB HDCAA RV QG (Quiet Diesel™) KY 60 Hz KY 50 Hz RV QG (MicroQuiet™) KY 60 Hz A-C KVC KY A-C A-E L A-K A-D J-M B-H A A-L A KV RV QG (MicroLite™ ) LP/HGJAA EFI/HGJAA RV QG (Mar
43 44 167-0272 167-0272 167-0247 167-0241 167-0262 167-0262 167-0298 167-0298 167-0237 167-0298 167-0237 167-0237 167-0262 A-E A DKD RV DKG D-F A-B — — — 122-0827 122-0827 122-0827 140-2680 140-2842 140-2842 A026K278 149-1914-05 149-1914-05 185-5421 185-2289 185-2289 185-2289 — — — — 23" 167-1602 9" 167-1615-01 167-1616-01 167-1616-01 167-1602 167-1602 167-1602 167-1602 167-1602 167-1616-01 Glow Plug or Plug Wire Spark Plug 185-5421 A026K278 — — — — —
COACH CARE SERVICE CENTERS GIVE YOU ONE STOP SERVICE AND REPAIR FOR YOUR RV BUMPER TO BUMPER, COAST TO COAST Coach Care Service Centers are the only nationwide bumper to bumper service network exclusively for motor homes. For chassis work, maintenance, appliance repairs and everything in between, Coach Care provides professional service in a friendly, no-hassle atmosphere. With more than 30 integrally linked Coach Care locations, our work is guaranteed everywhere you travel.
WASHINGTON 37 MONTANA NORTH DAKOTA 30 MAINE 27 OREGON N.H. MINNESOTA 14 20 IDAHO VT. WISCONSIN SOUTH DAKOTA NEW YORK WYOMING 38 IOWA NEVADA 19 17 31 DELAWARE ILLINOIS 2 W.
9. Cummins Power South 4820 N. Orange Blossom Trail Orlando, FL 32810 Toll Free: 800-338-7039 10. Cummins Power South 5910 E. Hillsborough Ave. Tampa, FL 33610 Toll free: 800-338-2519 Georgia Michigan 17. Cummins Bridgeway 43575 N. Gratiot Ave. Clinton Township, MI 48036 Phone: 586-469-2010 18. Cummins Bridgeway, Inc. 7580 Expressway Dr. SW Grand Rapids, MI 49548 Phone: 616-281-2211 11. Cummins Power South 5125 Highway 85 Atlanta, GA 30349 Toll Free: 800-768-7278 19.
Quiet Gas XI: Current RV Generator Model Information QG 2800 RM QG 2800 QG 2500 RM LP QG 2500 LP Built to deliver quiet, reliable power for Sport Utility Trailers, Fifth-Wheels and Type A, B and C RVs, the Quiet Gas models from Cummins Onan are the most popular in RVing. Besides carbureted gasoline and LP units, electronic fuel-injected gasoline models are also available.
Quiet Diesel So quiet and smooth, you won’t believe they’re diesels. Setting the standard for diesel RV generators, the Quiet Diesel™ Series dramatically lowers noise, vibration and harshness levels for diesel-powered RVs.
Hybrid Quiet Diesel - Introducing A Revolutionary New RV Power System Models and ratings Model Hz Generator mode watts* Voltage Phase Inverter/boost watts 810HQDSA-6028A 60 7500/10000 120 1 3000/2500 1215HQDSB-6042A 60 12000/15000 120/240 1 3000/3000 1218HQDSB-6037A 60 12000/18000 120/240 1 6000/6000 * Boost watts added to generator set watts for peak performance. Duration depends on size/status of batteries.
Energy Command 30 Energy Command 30W The new EC-30W system is a portable, wireless generator monitoring and autostart system that can be easily added to your RV in just minutes. It mounts on the wall or can move with you. Special features include: Cummins Onan Energy Command is a low cost, high value enhancement that provides the following benefits to the RV owner: Energy Management • Turns on the generator to meet air conditioning demands. • Look-ahead battery top-off feature prior to “quiet time”.
Energy Command 30 and 30W RV Interior 120 Vac Plug STOP START SET SHORE AGS 500 Hrs 30W ENTER 15W EC-15W FOB EC-30W Remote Module Shorepower Present Sensing (optional) Fuse Positive - + Engine Battery (optional) EC-30 Part # 018-02030 Accessories: Connector (#018-01052) Pins (#018-01074) 18" Pigtail (#044-00077) 25' Harness - QD Generators (#044-00076) 25' Harness - QG 7000, 6500, 5500, 4000, 3600 Generators (#044-00075) 25' Harness - QG 2800, 2500 Generators (#044-00074) 59 EC-30W Part # 018-
