Kohler 14RCA Instructions Manual
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Kohler 14RCA Instructions Manual

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Residential/Commercial Generator Sets
Operation
Models:
14RCA
14RCAL
18RCAL
20RCA
20RCAL
Controller:
RDC2
TP-7092 11/22b

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Summary of Contents for Kohler 14RCA

  • Page 1 Operation Residential/Commercial Generator Sets Models: 14RCA 14RCAL 18RCAL 20RCA 20RCAL Controller: RDC2 TP-7092 11/22b...
  • Page 2 State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov Kohler strongly recommends that only factory- authorized dealers install and service the generator. Product Identification Information Product identification numbers determine service parts.

  • Page 3: Table Of Contents

    Table of Contents Safety Precautions and Instructions ............................7 Introduction ....................................13 Service Assistance................................... 16 Section 1. Descriptions and Service Views ......................17 Introduction ................................17 Engine ..................................17 Alternator ................................17 Generator Set Enclosure ............................17 Transfer Switch ..............................17 Controller ................................
  • Page 4 Section 3. RDC2 Controller Operation ........................39 RDC2 Generator Set/Transfer Switch Controller ....................39 Control and Indicators ............................39 3.2.1 Controller Keypad ............................ 40 3.2.2 LED Indicators ............................41 3.2.3 LCD Display ............................. 41 Controller Power..............................42 Battery Charging ..............................42 Changing Settings ..............................
  • Page 5 Storage Procedure ..............................79 4.8.1 Lubricating System ..........................79 4.8.2 Fuel System ............................. 79 4.8.3 Cylinder Lubrication ..........................79 4.8.4 Exterior Preparation ..........................79 4.8.5 Battery..............................79 Section 5. Troubleshooting ............................. 81 Introduction ................................81 Fault Messages ..............................81 Circuit Protection ..............................81 5.3.1 Controller Internal Circuit Protection ......................
  • Page 6 TP-7092 11/22...

  • Page 7: Safety Precautions And Instructions

    Safety Precautions and Instructions IMPORTANT SAFETY INSTRUCTIONS. Electromechanical equipment, including generator sets, transfer switches, switchgear, and accessories, can cause bodily harm and pose life-threatening danger when improperly installed, operated, or maintained. To prevent accidents be aware of potential dangers and act safely. Read and follow all safety precautions and instructions. SAVE THESE INSTRUCTIONS.
  • Page 8 Battery WARNING Sulfuric acid in batteries. Can cause severe injury or death. Wear protective goggles and clothing. Battery acid may cause blindness and burn skin. WARNING Explosion. Can cause severe injury or death. Relays in the battery charger cause arcs or sparks. Locate the battery in a well‐ventilated area.
  • Page 9 Engine Backfire/Flash Fire WARNING Risk of fire. Can cause severe injury or death. Do not smoke or permit flames or sparks near fuels or the fuel system. Servicing the fuel system. A flash fire can cause severe injury or death. Do not smoke or permit flames or sparks near the carburetor, fuel line, fuel filter, fuel pump, or other potential sources of spilled fuels or fuel vapors.
  • Page 10 Fuel System WARNING Explosive fuel vapors. Can cause severe injury or death. Use extreme care when handling, storing, and using fuels. The fuel system. Explosive fuel vapors can cause severe injury or death. Vaporized fuels are highly explosive. Use extreme care when handling and storing fuels.
  • Page 11 Hazardous Voltage/Moving Parts DANGER Hazardous voltage. Will cause severe injury or death. This equipment must be installed and serviced by qualified electrical personnel. DANGER Hazardous voltage. Moving parts. Will cause severe injury or death. Operate the generator set only when all guards and electrical enclosures are in place. WARNING Hazardous voltage.
  • Page 12 Heavy Equipment WARNING Unbalanced weight. Improper lifting can cause severe injury or death and equipment damage. Do not use lifting eyes. Lift the generator set using lifting bars inserted through the lifting holes on the skid. Hot Parts WARNING Hot engine and exhaust system. Can cause severe injury or death.

  • Page 13: Introduction

    Do not install or operate the generator set indoors. Information in this publication represents data available at the time of print. Kohler Co. reserves the right to change this publication and the products represented without notice and without any obligation or liability whatsoever.
  • Page 14 Figure 2 identifies literature available for the generator sets and related accessories covered in this manual. Only trained and qualified personnel should install or service the generator set. Generator Set Literature Literature Part No. Specification Sheet, 14RCA/L G4-270 Specification Sheet, 18RCAL G4-313...
  • Page 15 Typical Nameplate Emission Information ® The Kohler Model CH740 engine used on the 14RCA/RCAL generator set is certified to operate using natural gas or propane fuel. ® The Kohler Model CH1000 engine used on the 18RCAL and 20RCA/RCAL generator sets is certified to operate using natural gas or propane fuel for emergency standby use only.

  • Page 16: Service Assistance

    • Visit the Kohler Co. website at KOHLERPower.com. • Look at the labels and decals on your Kohler product or review the appropriate literature or documents included with the product. • Call toll free in the US and Canada 1-800-544-2444.

  • Page 17: Descriptions And Service Views

    Transfer Switch The RDC2 controller is designed to interface with and control the Kohler Model RXT Automatic Transfer Switch (ATS). If the power system uses a different model transfer switch, the RDC2 controller will not control the transfer switch. An ATS other than the Model RXT must be equipped with a transfer switch controller and engine start contacts that connect to the remote engine start terminals on the generator set.

  • Page 18: Controller

    Controller RCA and RCAL models are equipped with the RDC2 controller. See Figure 5. ® The controller provides integrated control for the generator set, Kohler Model RXT transfer switch, programmable interface module (PIM) and load management devices. The controller’s 2-line LCD screen displays status messages and system settings that are clear and easy to read, even in di rect sunlight or low light.
  • Page 19 Unloaded cycle exercise with complete system diagnostics Unloaded full-speed exercise Loaded full-speed exercise (Model RXT ATS required) • SiteTech™ connection ® Front-access mini USB connector for Kohler • ® ® Integral Ethernet connector for Kohler OnCue Plus Generator Management System •...

  • Page 20: Oncue® Plus Generator Management System

    0°C (32°F). Note: Battery heaters are compatible with all Kohler-supplied lead-acid batteries. For other battery types, check the battery manufacturer’s instructions for any restrictions regarding the use of battery heaters. The battery heater requires a source of AC power. Verify that AC power is connected to the generator set as described in the generator set Installation Manual.

  • Page 21: Breather Tube Heater And Oil Heater Kit

    Battery heater wrap Power cord Retaining strap or cable ties (included) Figure 6 Battery Heater (typical) 1.8.3 Breather Tube Heater and Oil Heater Kit The breather tube heater and oil heater kit is recommended for improved cold starting in locations where the ambient temperat ure drops below 0°C (32°F).

  • Page 22: Fuel Regulator Heater (18 And 20Kw Models Only)

    Label Thermostat Heating element 120 VAC male connector (connect to breather tube heater) Heating probe GM101483 Figure 10 Oil Heater 1.8.4 Fuel Regulator Heater (18 and 20kW models only) An optional fuel regulator heater is recommended for models 18RCAL and 20RCA/L for improved cold starting in locations where the ambient temperature drops below -18°C (0°F).

  • Page 23: Oil Pressure Sensor Boot Kit

    1.8.5 Oil Pressure Sensor Boot Kit The oil pressure sensor boot protects the oil pressure sensor and its connection from moisture and frost buildup that can cause false low oil level faults. Install the oil pressure sensor boot in locations where the ambient temperature drops below 0°C (32°F). See Figure 14 for illustrations of the installed kit.

  • Page 24: Emergency Stop Kit

    TT-1613 and TT-1795 instructions. ® RDC2 firmware to version 5.5 or higher is required for E-stop operation. Use a personal computer (laptop) and Kohler SiteTech™ software or the USB Utility to update the controller firmware, if necessary. See TP-6701, SiteTech Operation Manual, or TT-1636, Firmware Update Using the USB Utility, for instructions if necessary.

  • Page 25: Programmable Interface Module (Pim)

    Two single-phase generator sets. The generator sets must be the same size (kW) and model. APM RDC2.4 paralleling firmware for the blue-board controller on each generator set. Download the latest version of paralleling firmware from the Service Support section of the Kohler Power Resource Center (KPRC). One Model RXT automatic transfer switch (ATS).

  • Page 26: Service Views

    RDC2 controller Lifting holes Line circuit breaker Fuel inlet Field-connection terminal block (behind panel) Air intake Digital spark advance ignition (DSAI) lead location (14RCA/L only) Low voltage electrical in Thermostat location Oil check (dipstick) Fuel system Air cleaner Battery cables (provided)

  • Page 27: Generator Set Operation

    Section 2. Generator Set Operation Prestart Checklist To ensure continued satisfactory operation, perform the following checks or inspections before or at each startup, as designa ted, and at the intervals specified in the service schedule. In addition, some checks require verification after the unit starts. Air Cleaner.

  • Page 28: Local Starting And Stopping

    Carbon monoxide symptoms. Carbon monoxide can cause severe nausea, fainting, or death. Carbon monoxide is a poisonous gas present in exhaust gases. Carbon monoxide is an odorless, colorless, tasteless, nonirritating gas that can caus e death if inhaled for even a short time. Carbon monoxide poisoning symptoms include but are not limited to the following: •...
  • Page 29 Emergency Stop Switch Operation Press the red STOP button to shut down the generator set in an emergency. Using the emergency stop button bypasses the engine cooldown cycle, stopping the engine immediately. The controller emergency stop lamp lights (if equipped) and the unit shuts down. The generator set cannot be restarted until the emergency stop switch(es) is/are reset.

  • Page 30: Engine Start Crank Cycle

    Automatic Operation with Other Transfer Switches If a transfer switch other than the Model RXT (such as a Kohler Model RDT) is used, the engine start contacts from the ATS must be connected to engine start leads 3 and 4 on the generator set.

  • Page 31: Exercise

    Automatic Start The engine start contacts on the ATS close to signal the generator set to start, and remain closed while the generator set is running. Automatic Stop The engine start contacts on the ATS open to signal the generator set to stop. Exercise The RDC2 controller can be set to automatically run the generator set at the same time and day each week.

  • Page 32: Unloaded Cycle Exercise With Complete System Diagnostics

    2.4.2 Unloaded Cycle Exercise with Complete System Diagnostics An unloaded exercise runs the generator set without signaling the transfer switch to transfer the electrical load from the ut ility source to the generator set. The Unloaded Cycle exercise with diagnostics is the recommended exercise mode and is the default exercise setting.

  • Page 33: Unloaded Full-Speed Exercise

    To set a loaded exercise, follow the procedure in the Changing the Exercise Settings section and select Exercise Type: Loaded. ® For a loaded exercise with a transfer switch other than a Kohler Model RXT, program the exercise at the transfer switch controller. Refer to the transfer switch operation manual for instructions.

  • Page 34: Faults

    Faults The RDC2 controller displays fault messages for generator set warnings and shutdowns. Selected fault messages are shown in the Resetting the Controller After a Fault Shutdown section. Contact an authorized dealer for service, if necessary. 2.5.1 Warnings The controller displays a fault message but the generator set does not shut down on a warning. The controller resets automatically after a warning condition is corrected.
  • Page 35 Confirm Clear Overview ---> Fault Message Fault Message Fault: NO 1.2 h Press UP arrow button. Confirm Clear Fault: YES tp6809 Figure 24 Clearing a Fault on the RDC2 Controller Warning (W) or Fault Message Condition Check Shutdown (SD) AC sensing lost. In Auto mode, generator output AC sensing is lost.
  • Page 36 Warning (W) or Fault Message Condition Check Shutdown (SD) Governed frequency exceeds 110% of the system’s frequency setpoint for more than 10 seconds. Function Contact an authorized dealer Frequency High SD * becomes active 10 seconds after engine start (10 second for service.

  • Page 37: Faults Related To Paralleling

    2.5.6 Faults Related to Paralleling ® If the PowerSync Automatic Paralleling Module (APM) is used with two 14 kw or two 20 kW generator sets, additional faults and events related to the paralleling system may be displayed on the controller and/or in OnCue Plus. This section lists those faults and events.
  • Page 38 Fault Text Description Possible Causes * RBUS disconnected, secondary controller The primary controller has lost communication with the secondary battery disconnected, updating firmware in LossOfComm2 controller. (A secondary controller was detected, then secondary controller, or intermittent RBUS communication was lost.) connections.

  • Page 39: Rdc2 Controller Operation

    Section 3. RDC2 Controller Operation RDC2 Generator Set/Transfer Switch Controller Model RCA and RCAL generator sets are equipped with the RDC2 generator set/transfer switch controller. The RDC2 controls the following power system components: • Model RCA or RCAL generator set •...

  • Page 40: Controller Keypad

    2-line LCD display Up button AUTO button and LED Select button OFF button and LED Down button RUN button and LED Utility power available LED* Generator power available LED* Building on utility power LED* Building on generator power LED* GM77569 ...

  • Page 41: Led Indicators

    3.2.2 LED Indicators LEDs above the RUN, OFF, and AUTO buttons indicate the mode of operation as shown in Figure 32. Power System LEDs indicate the status of the utility power and the generator set, and indicate which source is supplying powe r to the building (based on the position of the RXT transfer switch).

  • Page 42: Controller Power

    Active Alert Active Alert Genset Status Genset Status Running Standby Voltage: 240V Battery Freq: 60.0 Hz 12.3V Engine: 72.0F Engine Runtime: Oil Pressure: OK 24.5 h Battery Date: 02DEC2011 12.3V Time: HR:MNpm Engine Runtime: Next Exercise: 24.5 h 09:00p 09Dec2011 Date: 02DEC2011 Next Maintenance: Time: HR:MNpm...

  • Page 43: Changing Settings

    Changing Settings Some settings can be changed from the controller keypad. The controller settings and generator set output are factory -set and should not require field adjustment under normal circumstances. Check and adjust the settings and/or output when: • The controller has been replaced. •...
  • Page 44 Changing Settings on the RDC2 Controller Press the Select button to enter the main menu. When the correct date is shown, press the Select button. The saved date is shown. Overview --> Press: Display: Date 1.2 h Press: Display: 03Jan2012 Press the down arrow button until the desired menu Press the down arrow button to step to the next menu.

  • Page 45: Setting The Exerciser

    After a scheduled exercise run, the next exercise time and date will be updated automatically based on the Exercise Frequency setting. ® Other transfer switches: For a loaded exercise with a transfer switch other than a Kohler Model RXT ATS, refer to the transfer switch operation manual for instructions.
  • Page 46 Genset - - > System Freq: System XX.X Hz System Phase System Volt System Battery Fuel Type HOLD: Next Exercise * Next Exercise HR:MN PM MM/DD/YY HR:MN PM MM/DD/YY HOLD: Exercise Mode: Exercise Mode: Unloaded Cycle/Unloaded Loaded Full/ Loaded Full HOLD: Exercise Freq: Exercise Freq:...

  • Page 47: Rdc2 Controller Menus

    RDC2 Controller Menus Controller menus display power system information, including status information for the engine, generator, and optional RBUS accessories, exercise settings, and event history. Some menus allow changes to the controller settings. Status information, including the engine runtime, cannot be changed by the operator. Diagrams in the following sections show how to navigate through the menus.

  • Page 48: Overview Menu

    Overview Menu Overview ---> Active Alert (if any) 1.2 h Genset Status Standby Voltage: 240V Freq: 60.0 Hz Engine: 72F Oil Pressure: OK Battery: 12.0V Engine Runtime: 24.5 h Date: 02DEC2011 Time: HR:MNpm Next Exercise: 09:00p 09Dec2011 Next Maintenance: 150 h or Mar2012 SW Version: 4.07 <--- Return...

  • Page 49: Engine Metering Menu

    3.10 Engine Metering Menu The engine metering menu displays engine status information as shown in Figure 38. This menu displays status information only. No settings can be changed from this menu. Eng Speed: Engine ---> 3600 RPM Metering Oil Pressure: Switch: OK Oil Temperature: 72.0 F...

  • Page 50: Generator Metering Menu

    Voltage Calibration The voltage calibration mode can be entered from the Generator Metering menu. Contact a Kohler-authorized dealer for service. The Reset Calibration menu allows you to set the voltage reading back to the original value after calibration, if necessary.

  • Page 51: Generator Set Information Menu

    Model and serial numbers are factory-set and should not require changes in the field, except in the event that the controller is SiteTech™ software is required to enter the generator set model number ® being replaced. A personal computer running Kohler and serial numbers on a replacement controller. Contact an authorized Kohler dealer for service. Genset M/N: Genset ----> 20RCA...

  • Page 52: Genset System Menu

    A Kohler-authorized dealer can adjust these settings, if necessary. If the generator set is reconnected to a different voltage or the system settings require adjustment for some other reason, see the Changing Settings section for instructions to enable editing and change the system settings.
  • Page 53 System Voltage: Genset ---> 240 V System System Freq: 60 Hz VR Voltage Adj: 240.0 V System Phase: Single System Battery: 12 V Fuel Type: Next Exercise 06:30PM 15Dec2011 Exercise Mode: Unloaded Variable Exercise Freq: Weekly Language: English Meas System: English Contrast: 50 Note:...

  • Page 54: Ats Status Menu

    3.15 ATS Status Menu ATS menus appear if a Model RXT transfer switch is connected to the generator set. If no transfer switch is connected, or another model ATS is connected to the engine start connections, Remote ATS is displayed on the ATS Status screen. The ATS Status menu displays Model RXT transfer switch and source information.

  • Page 55: Ats Configuration Menu

    3.16 ATS Configuration Menu Note: The ATS Configuration menu appears only if a Model RXT transfer switch is connected. Use the ATS Configuration submenu to check the Model RXT transfer switch system settings and time delays, and change the settings, if necessary. Changing ATS Configuration Settings To enable editing, press the select button.

  • Page 56: Date And Time Menu

    Use the networking menus to view and adjust communication settings for systems with remote RBUS devices such as a PIM or ® ® load shed kit, and for systems that use the Kohler OnCue Plus Generator Management System. RBUS is a proprietary RS-485 communications protocol.

  • Page 57: Networking Status Submenu

    3.18.1 Networking Status Submenu ® The Networking Status submenu contains settings for OnCue Plus. Changes to these settings are not typically required. If DHCP is enabled, IP parameters are not displayed. If DHCP is disabled (i.e., if a static IP address is used), the IP parameters are displayed.

  • Page 58: Networking Configuration Submenu (Oncue® Password)

    3.18.2 Networking Configuration Submenu (OnCue® Password) ® ® The networking Configuration menu includes settings used for communication with the Kohler OnCue Plus Generator Management System. Password Note: ® Use the OnCue password shown on the controller display for OnCue or OnCue Plus applications.
  • Page 59 Networking---> Networking---> Status Information HOLD Networking Reset OnCue Reset OnCue Configuration Password Password? No UP arrow for YES, Down arrow for NO. RBUS - - > Reset OnCue Information Password? Yes Press Select to enter YES or NO as displayed. New password is displayed for approximately 10 seconds.

  • Page 60: Rbus Information

    3.18.3 RBUS Information The RBUS Information menu contains settings for remote modules that communicate with the RDC2 controller using RBUS protocol. This includes the following optional modules: • Model RXT transfer switch • Combined interface/ load management board on the RXT transfer switch •...

  • Page 61: Remote Devices Submenu

    3.18.4 Remote Devices Submenu Check the status of remote devices communicating through RBUS. Device types can include: • Model RXT ATS • Programmable Interface Module (PIM) • Load shed kit or combined interface/ load management board on a Model RXT transfer switch •...

  • Page 62: Programmable Interface Module (Pim) Status Menu

    PIM is connected. This is a status display menu only. Input and output settings cannot be changed from the RDC2 controller’s user interface. SiteTech™ software is required to change the input and output settings. Contact an ® A personal computer running Kohler authorized dealer for service. ® ®...

  • Page 63: Load Control Menus

    3.20 Load Control Menus The Load Control menu displays the status of the load management device inputs and outputs, and allows a test of the load control output relays. This menu appears only if a load management device (load shed kit or Model RXT transfer switch with th e combined interface/ load management board) is connected.

  • Page 64: Event Log

    3.21 Event Log The event log displays up to 1000 controller faults and notices, starting with the most recent event. Events are numbered 1-1000, with 1 being the most recent. Each event is displayed with the date and time of the event, the number of the event, a code to indicate whether the event was a warning (W), shutdown (S), or informational notice (I), the engine hours at the time of the event, and the event description.

  • Page 65: Scheduled Maintenance

    Section 4. Scheduled Maintenance WARNING Accidental starting. Can cause severe injury or death. Disconnect the battery cables before working on the generator set. Remove the negative (–) lead first when disconnecting the battery. Reconnect the negative (–) lead last when reconnecting the battery. Disabling the generator set.

  • Page 66: Service Schedule, 14 Kw Models

    4.1.1 Service Schedule, 14 kW Models Procedure Visually System Component or Procedure Inspect Check Change Clean Test Frequency Fuel Flexible lines and connections Quarterly Main tank supply level Weekly Fuel piping Yearly Lubrication Oil level Every 8 hours. of engine operation Crankcase breather hose Yearly or 500 hours Change oil...

  • Page 67: Service Schedule, 18 And 20 Kw Models

    4.1.2 Service Schedule, 18 and 20 kW Models Procedure Visually System Component or Procedure Inspect Check Change Clean Test Frequency Fuel Flexible lines and connections Quarterly Main tank supply level Weekly Fuel piping Yearly Lubrication Oil level Every 8 hours. of engine operation Crankcase breather hose Yearly or 500 hours...

  • Page 68: Lubrication System

    Lubrication System See the service schedules section for oil change and oil filter replacement intervals. See the service views section for the oil drain, oil dipstick, oil fill, and oil filter locations. WARNING Accidental starting. Can cause severe injury or death. Disconnect the battery cables before working on the generator set.

  • Page 69: Oil Check

    4.2.2 Oil Check The generator set is shipped with oil. Before operating the generator set, check the engine oil in the crankcase. To check the oil level, shut down the generator set and wait several minutes. Remove the dipstick and wipe the end clean, reinsert, and remove.
  • Page 70 Replace the oil filter. Clean the area around the oil filter. Loosen the oil filter by rotating it counterclockwise with an oil filter wrench. On 18 and 20 kW models, allow the oil to drain from the filter. Then remove the oil filter. Clean the gasket sealing surface of the oil filter adapter.

  • Page 71: Resetting The Maintenance Timer

    Check for leaks. Check for oil leaks. Fix leaks and recheck the oil level. Reinstall the housing side panel. Reset the maintenance timer on the controller. 4.2.5 Resetting the Maintenance Timer From the Overview menu, step down to the Genset Run Time menu. Press the Select button and then step down to the Next Maintenance screen.

  • Page 72: Spark Plugs

    Spark Plugs WARNING Accidental starting. Can cause severe injury or death. Disconnect the battery cables before working on the generator set. Remove the negative (–) lead first when disconnecting the battery. Reconnect the negative (–) lead last when reconnecting the battery. Disabling the generator set.

  • Page 73: Air Cleaner Service

    1-511 Figure 60 Adjusting the Spark Plug Gap Air Cleaner Service WARNING Risk of fire. Can cause severe injury or death. Do not smoke or permit flames or sparks near fuels or the fuel system. Servicing the air cleaner. A sudden backfire can cause severe injury or death. Do not operate the generator set with the air cleaner removed.

  • Page 74: Air Cleaner, 18/20 Kw Models

    Air Cleaner Service Use the following procedure to replace the paper element at the intervals specified in the service schedule. Replace the pape r element more often under extremely dusty or dirty conditions. Press the OFF button on the generator set controller. Disconnect the utility power to the generator set.

  • Page 75: Cooling System

    Reinstall the paper element onto the air cleaner base. Make sure the element is flat and properly seated. Install the air cleaner cover and secure with the two retaining knobs. When element replacement is necessary, order genuine Kohler parts. Cooling System The engine fan draws cooling air through the openings in the sides and end near the battery.

  • Page 76: Battery

    Battery WARNING Sulfuric acid in batteries. Can cause severe injury or death. Wear protective goggles and clothing. Battery acid may cause blindness and burn skin. Battery electrolyte is a diluted sulfuric acid. Battery acid can cause severe injury or death. Battery acid can cause blindness and burn skin.

  • Page 77: Cleaning The Battery

    4.7.1 Cleaning the battery Clean the battery and cables and tighten battery terminals using the service schedule recommendations. To prevent corrosion, maintain tight, dry electrical connections at the battery terminals. To remove corrosion from battery terminals, disconnect t he cables from the battery and scrub the terminals with a wire brush. Clean the battery and cables with a solution of baking soda and water.
  • Page 78 Correction Example No. 1 Temperature below 26.7°C (80°F) Hydrometer Reading 1.250 Acid Temperature - 6.7°C (20°F) Subtract .024 Specific Gravity Corrected Specific Gravity is 1.226 1.250 - .024 = 1.226 Example No. 2 Temperature above 26.7°C (80°F) Hydrometer Reading 1.235 Acid Temperature 37.8°C (100°F) Add .008 Specific Gravity Corrected Specific Gravity is 1.243...

  • Page 79: Storage Procedure

    Storage Procedure Perform the following storage procedure before removing the generator set from service for three months or longer. Follow the engine manufacturer’s recommendations for storage, if available. Note: Run the generator set monthly whenever possible. 4.8.1 Lubricating System Operate the generator set until it reaches operating temperature, or about 15 minutes. Stop the generator set.
  • Page 80 TP-7092 11/22...

  • Page 81: Troubleshooting

    If the procedures in this manual do not explain how to correct the problem, contact an authorized Kohler dealer. Maintain a record of repairs and adjustments performed on the equipment. Use the record to help describe the problem and repairs or adjustments made to equipment.

  • Page 82: Stop Switches

    USB port on RDC2 controller Mini-breaker location (access through engine compartment) ADV-8928 Figure 67 USB Port and Mini-Breaker Locations Stop Switches The generator set may be equipped with an optional emergency stop switch or an engine shutdown switch. Verify that it is safe to start the generator set and apply power to the load before deactivating these switches.
  • Page 83 The generator sets include a resettable thermostat. See Figure 68 for the thermostat location in the air intake area, near the fuel system. The thermostat detects excess heat inside the enclosure. If the thermostat trips, the generator will shut down and th e controller will display a fault (underspeed, underfrequency, or undervoltage).

  • Page 84: Troubleshooting

    No AC output. Line circuit breaker tripping because of short circuit. Contact an authorized Kohler dealer for service. Reset the circuit breaker (located in controller’s service Auxiliary winding circuit breaker tripped. access area). Contact an authorized dealer for service if breaker trips repeatedly.

  • Page 85: Appendix A. Abbreviations

    Appendix A. Abbreviations A, amp ampere blk. htr. block heater digital to analog converter ABDC after bottom dead center BMEP brake mean effective pressure decibel alternating current bits per second dB(A) decibel (A weighted) analog to digital Brass direct current advanced digital control;...
  • Page 86 (2 bytes) megabyte (2 bytes) gallons per hour KBus Kohler communication protocol MCCB molded-case circuit breaker gallons per minute kilogram one thousand circular mils grade, gross kg/cm kilograms per square meggar megohmmeter centimeter...
  • Page 87 N, norm. normal (power source) permanent magnet generator silicon controlled rectifier (electrical), selective catalytic reduction (exhaust emissions) not available, not applicable potentiometer, potential s, sec. second Systeme international d’unites, nat. gas natural gas parts per million International System of Units National Bureau of Standards PROM programmable read-only...
  • Page 88 ultrahigh frequency user interface Underwriter’s Laboratories, Inc. unified coarse thread (was NC) unified fine thread (was NF) univ. universal uniform resource locator (web address) undersize, underspeed ultraviolet, undervoltage volt volts alternating current voltampere reactive volts direct current vacuum fluorescent display video graphics adapter very high frequency watt...
  • Page 89 TP-7092 11/22...
  • Page 90 TP-7092 11/22...
  • Page 92 TP-7092 11/22b KOHLER CO. Kohler, Wisconsin 53044 Phone 920-457-4441, Fax 920-459-1646 For the nearest sales/service outlet in the Original Instructions (English) US and Canada, phone 1-800-544-2444 KOHLERPower.com © 2018 Kohler Co. All rights reserved.

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