Winco PSSRA40LS User Manual

PACKAGE STANDBY SYSTEMS
PSSRA27LS PSSRA40LS
INSTALLATION AND
OPERATIONS MANUAL
for UNITS EQUIPPED
WITH BASLER DIGITAL
GENSET CONTROLS
Automatic Transfer Switch
Engine Generator Set
225 SOUTH CORDOVA AVE LE CENTER MN 56057 507-357-6831
Read and understand all instructions in the manual before starting and operating the generator set.
USING THIS MANUAL
Congratulations on your choice of a Winco generator set. You have selected a high-quality, precision-engineered generator set designed and tested to give you years of satisfactory standby service.
To get the best performance from your new engine generator set, it is important that you carefully read and follow the operating instructions in this manual.
Should you experience a problem please follow the “Things To Check” near the end of this manual. The war­ranty listed in this manual describes what you can expect from WINCO should you need service assistance in the future
COPY YOUR MODEL AND SERIAL NUMBER HERE
No other WINCO generator has the same serial number as yours. It is important that you record the number and other vital information here. If you should ever need to contact us on this unit it will help us to respond to your needs faster.
MODEL_____________________________________
SERIAL NUMBER____________________________
PURCHASE DATE____________________________
DEALER____________________________________
TABLE OF CONTENTS
INTRODUCTION i GUIDE TO PRODUCT SAFETY 1 BASIC INFORMATION 2
Description 2 Specification Table 3
PREPARING THE UNIT 3
Unpacking the unit 4
ENGINE GENERATOR INSTALLATION 4
Installation 4 Fuel Line Installation 4 Fuel Pressure Tables 5 LP Liquid Withdrawal 5 Lubrication 6 Coolant 6 Battery Installation 5 Battery Charger/Block Heater Wiring 6
TRANSFER SWITCH INSTALLATION (NON-UL) 6
AC Electrical Connections 7 DC Electrical Connections 8
TRANSFER SWITCH INSTALLATION (UL) 8
AC Electrical Connections 8 DC Electrical Connections 8
INITIAL START-UP 8
Sequence of Operation 8
EXERCISER CLOCK 10 TROUBLESHOOTING INFORMATION 10 LP/NG CONVERSION 11 Blank 13 AC WIRING - THREE PHASE
277/480 Volt 14 120/208 Volt 14 120/240 Volt 15
AC WIRING - SINGLE PHASE
120/240 Volt 15
VOLTAGE REGULATOR WIRING 16 DC SCHEMATIC - WIRING DIAGRAM 17 INTERNAL GENERATOR CONNECTIONS
PSS27LS 18 PSS40LS 19
OUTLINE DRAWING
PSS40LS 20 PSS27LS 21
12 MONTH WARRANTY 22
PROPER USE AND INSTALLATION
You must be sure your new engine generator set is: * Properly serviced before starting * Operated in a well ventilated area * Properly exhausted and gases safely dispersed * Wired by a qualified electrician * Operated only for its designed purposes * Used only by operators who understand its operation * Properly maintained
Page i
SAFETY INFORMATION
2. FIRE HAZARD - Natural gas and L.P. present a hazard of possible explosion and/or fire.
This engine generator set has been designed and manufac­tured to allow safe, reliable performance. Poor maintenance, improper or careless use can result in potential deadly hazards; from electrical shock, exhaust gas asphyxiation, or fire. Please read all safety instructions carefully before installation or use. Keep these instructions handy for future reference. Take special note and follow all warnings on the unit labels and in the manu­als.
ANSI SAFETY DEFINITIONS
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DANGER:
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. This signal word is to be limited to the most extreme situations.
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WARNING:
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
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CAUTION:
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
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NOTE:
CAUTION is also used on the unit labels and in this manual to indicate a situation that could result in serious damage or destruction of the equipment and possible personal injury.
a. Do not smoke or use open flame near the generator
set.
b. Keep a fire extinguisher nearby and know its proper use.
Fire extinguishers rated ABC by NFPA are appropriate.
3. DEADLY EXHAUST GAS - Exhaust fumes from any gaso­line engine contain carbon monoxide, an invisible, odorless and deadly gas that must be mixed with fresh air.
a. Operate only in well ventilated areas. b. Never operate indoors. c. Never operate the unit in such a way as to allow exhaust
gases to seep back into closed rooms (i.e. through windows, walls or floors).
4. NOISE HAZARD - Excessive noise is not only tiring, but continual exposure can lead to loss of hearing.
a. Use hearing protection equipment when working
around this equipment for long periods of time.
b. Keep your neighbors in mind when permanently install-
ing this equipment.
5. CLEANLINESS - Keep the generator and surrounding area clean.
a. Remove all grease, ice, snow or materials that create
slippery conditions around the unit.
b. Remove any rags or other material that could create
potential fire hazards.
c. Carefully wipe up any gas or oil spills before starting the
unit.
d. Never allow leaves or other flammable material to build
up around the engine exhaust area.
6. SERVICING EQUIPMENT - All service, including the installation or replacement of service parts, should be
performed only by a qualified technician.
1. ELECTRIC SHOCK - The output voltage present in this equipment can cause a fatal electric shock. This equipment must be operated by a responsible person.
a. Do not allow anyone to operate the generator without
proper instruction. b. Guard against electric shock. c. Avoid contact with live terminals or receptacles. d. Use extreme care if operating this unit in rain or snow. e. Use only three-prong grounded receptacles and
extension cords. f. Be sure the unit is properly grounded to an external
ground rod driven into the earth.
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a. Use only factory approved repair parts. b. Do not work on this equipment when fatigued. c. Never remove the protective guards, doors, cover, or
receptacle panels while the engine is running.
d. Use extreme caution when working on electrical compo-
nents. High output voltages from this equipment can cause serious injury or death.
e. Always avoid hot mufflers, exhaust manifolds, and
engine parts. They all can cause severe burns instantly.
f. Installing a generator set is not a “do-it-yourself” project.
Consult a qualified, licensed electrician or contractor. The installation must comply with all national, state, and local codes.
g. Always make sure unit is disabled before placing your
hands anywhere near the fan, belts, alternator or water hoses.
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TESTING POLICY:
2) ENGINE/GENERATOR
Before any generator is shipped from the factory, it is fully checked for performance. The generator is loaded to its full capacity, and the voltage, current, and frequency are carefully checked.
Rated output of generators is based on engineering tests of typical units, and is subject to, and limited by, the temperature, altitude, fuel, and other conditions specified by the manufacturer of the applicable engines.
INTRODUCTION AND DESCRIPTION
The package standby engine generator set includes all items necessary for a completely automatic standby power system as standard equipment. The entire package is then tested to insure proper operation of all components and the total system perform­ance and reliability.
DESCRIPTION
This package power system is designed to automatically provide standby power to unattended loads during electrical outages. Upon an interruption of normal electrical service this package power system electrical control circuits will automatically start the engine. The generator will produce electrical power and the Automatic Transfer Switch (A.T.S.) will automatically transfer the electrical loads to the engine-generator set. Upon restoration of normal electrical service the A.T.S. will sense return of the normal commercial power and retransfer the load back to normal commercial power source. The engine control circuits will shut off the fuel supply and the engine ignition system.
These package power systems consist of two major components:
1) WINCO AUTOMATIC TRANSFER SWITCH
(Non-UL model)
The table below shows the different Automatic Switch sizes typically used with each unit.
CONTACTOR RATING MODEL VOLTAGE LINE GENERATOR PSS27LS-3 120/240 230 150 PSS27LS-4 120/208 230 150 PSS27LS-17 120/240 230 150 PSS27LS-18 277/480 * * PSS40LS-3 120/240 230 230 PSS40LS-4 120/208 230 150 PSS40LS-17 120/240 230 150 PSS40LS-18 277/480 * * *Special order UL Transfer Switches
These Automatic Transfer Switches (A.T.S.) are wall mount switches designed for inside installation. The A.T.S. consists of a line side contactor and a generator side contactor. The contac­tors are both electrically and mechanically interlocked. A seven day electronic exerciser clock is installed in the A.T.S. as stan­dard equipment. The A.T.S. also contains the power failure sensing circuitry necessary to send a start/stop signal to the engine generator set.
PSS27LS- The engine generator set consists of a GM 3.0L, I-4 Industrial, four cylinder, liquid cooled engine equipped to run on L.P./N.G. fuel. The engine operates at 1800 rpm and frequency regulation is maintained by the electronic governor within .5 cycles variation, from no load to rated load. The 27,000 watt (27kW) generator is a single bearing, direct drive, rotating field design. The generator is connected to the engine flywheel via flexible drive disks. The engine generator is mounted in a drip proof enclosure for outside installation. Connection boxes are provided to all customer connections (both AC output and DC control). A customer supplied 12 Volt, 650 CCA (BCI group 24) battery is required to complete the installation. Engine operation is controlled by an Digital Genset Controller (DGC) mounted in the engine generator enclosure.
PSS40LS - The engine generator set consists of a GM 4.3L ,V-6 Industrial, liquid cooled engine equipped to run on L.P./N.G. fuel. The engine operates at 1800 rpm and frequency regulation is maintained by the engine governor within .5 cycles variation, no load to rated load. The 40,000 watt (40kW) generator is a single bearing, direct drive, rotating field design. The generator is connected to the engine flywheel via flexible drive disks. The engine generator is mounted in a drip proof enclosure for outside installation. Connection boxes are provided to all customer connections (both AC output and DC control). A customer supplied 12 Volt, 650 CCA (BCI group 24) battery is required to complete the installation. Engine operation is controlled by an Digital Genset Controller (DGC) mounted in the engine generator enclosure.
** NOTICE **
These units will automatically transfer if a power outage occurs while running in an exercise mode.
Digital Genset Controller
The Digital Genset Controller (DGC) is a programmable engine control module utilizing the latest technology in digital control. The DCGs in these units have be programmed to meet the more sophisticated needs of today's generator users.
The following system settings have been programmed into the DCG:
Start Delay 10 Seconds Generator Cranking Style Cycle Number of Cranking Cycles 3 Cycle Crank Duration 15 Seconds Crank Disconnect 30% of Rated Speed Cool Down Timer 5 Minutes High Coolant Lockout 60 Seconds Low Oil Pressure Delay 10 Seconds
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The following pre-alarm and alarm setting have been pro­grammed in the DCG:
Pre-Alarm Alarm Low Coolant Temp (Deg F) 70 High Coolant Temp (Deg F) 210 230 Low Oil Pressure 25 PSI 15 PSI Overspeed N/A 115% Battery Overvoltage 15 VDC Enabled Low Battery Voltage 10 VDC Enabled Weak Battery Voltage 7.5 VDC Enabled Coolant Temperature Sender Failure Enabled Oil Pressure Sender Failure Enabled Magnetic Pickup Failure Enabled Battery Chager Failure Enabled Loss Of Generator Voltage Alarm Enabled
During normal operation the DGC will continuously display the engine oil pressure, coolant temperature and the battery voltage reading. By pressing the "Phase Toggle" push-button you can toggle through the different phases checking the generator output and amperage reading on each phase.
The DGC has three operational push-buttons. You can tell which position has been activated by the LEDs positioned just under the push-buttons:
RUN - Will start the unit locally at the engine generator set and allow you to proform any necessary checks prior to connecting your loads.
PROGRAMMING VIA THESE PUSH-BUTTONS AND ENTER­ING AN IMPROPER CODE CAN DISABLE YOUR GENERA­TOR. If you should push one of these push-buttons by mistake
and get the programming opened up, back out of it by depressing the display toggle. If it should become necessary to change the baseline setting programmed into this controller please contact the WINCO Inc. Service Department at 507-357-6831 for assis-
tance.
** NOTICE **
These units will automatically transfer if a power outage occurs while running in an exercise mode.
SPECIFICATIONS
GENERATOR
MODEL WATTS VOLTS AMP HZ PH RPM PSS27LS 27,000 120/240 112.5* 60 1 1800
PSS27LS-4 27,000 120/208 94.0* 60 3 1800 PSS27LS-17 27,000 120/240 81.2* 60 3 1800 PSS27LS-18 27,000 277/480 40.6* 60 3 1800 PSS40LS 40,000 120/240 166.7** 60 1 1800 PSS40LS-4 40,000 120/208 138.9** 60 3 1800 PSS40LS-17 40,000 120/240 120.4** 60 3 1800 PSS40LS-18 40,000 277/480 60.2** 60 3 1800
*Derate 11% for Natural Gas operation. Derate 3.5% per 1000 feet elevation above sea level. **Derate 18% for Natural Gas operation. Derate 3.5% per 1000 feet elevation above sea level.
FUEL CONSUMPTION
STOP - Will disable the engine-generator set making it safe to
preform routine maintenance. AUTO - Will allow the unit to be started from a remote location.
This is the position you will use in conjunction with an Automatic Transfer Switch. This is also the push-button you depress to leave the unit in "Standby Mode"
There are three additional LED lights on the panel: NOT IN AUTO - Indicates that the engine generator set has not
been left in the "AUTO" mode and will not start if there is a line power failure.
ALARM - This red LED lights continuously during alarm condi­tions and flashes during pre-alarm conditions.
SUPPLYING LOAD - Indicates the generator is supplying more than 2% of rated current to whatever is connected to it. In such cases you should not shut the unit down for routine maintenance or you will disrupt your loads.
There are seven additional push-buttons on this control panel, only two of them should routinely be used. The "LAMP TEST" push-button tests the DCG indicator by exercising all LCD segments and lighting all LEDs. The "ALARM SILENCE" push­button would reset an audio alarm if the control is equipped with one. These controllers are not.
The last five push-buttons, "Raise/Scroll". "Lower/Scroll", "Select/Enter", "Previous", and Display Toggle, are not used during normal operation. These push-buttons allow the service personnel to gain access to some of the programming and change it in the field. PLEASE NOTE OPENING UP THE
NG (1,000 BTU/CU FT) L.P. VAPOR (2,520 BTU/CU FT) MODEL CF/HR BTU/HR #/HR GAL/HR CF/HR BTU/HR PSS27LS 320 320,000 14.1 3.3 120 302,400 PSS40LS 450 450,000 20.0 4.7 170 428,400
L.P. TANK SIZING
Minimum required L.P. Tank size for L.P. Vapor withdrawal operating at various outside temperatures given in degrees Fahrenheit (Celsius)
TANK TEMPERATURE MODEL 60 F(16 C) 30 F(0 C) 0 F(-18 C) -20 F(-29 C) PSS27LS 100 Gal 150 Gal 500 Gal* 1500 Gal* PSS40LS 160 Gal. 300 Gal. 1000 Gal.* 2000 Gal.* *Recommend liquid withdrawal at these temperatures.
ENGINE SPECIFICATIONS:
Refer to engine operating and maintenance instructions
** NOTICE **
Regarding Engines - This manual covers the generator portion of these units. See the separate engine instruction manual for engine-related problems, detailed engine information and engine warranty.
** CAUTION **
EQUIPMENT DAMAGE - Be sure to check the engine oil level frequently as specified in the engine manual.
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The engine manufacturer has established an excellent worldwide engine service organization; engine service is available from a nearby authorized dealer or distributor; check the Yellow Pages of the telephone directory under “engines,” or ask the dealer from whom you purchased the power plant.
The rated power of each engine-generator is limited by the temperature, altitude and all other ambient conditions specified by the engine manufacturer. Engine power will decrease 3-1/2% for each 1000 ft. above sea level, and will decrease an additional 1% for each 10 degrees Fahrenheit above 60 degrees Fahren­heit.
UNPACKING INSTRUCTIONS
** NOTICE **
When unpacking the generator set, be sure to inspect it carefully for freight loss or damage. If loss or damage is noted at the time of delivery, require that the person making the delivery to make a note of the loss or damage on the freight bill, or affix his signature under the consignee’s memo of the loss or damage. Contact the carrier for claim procedures.
When loss or damage is noted after delivery, segregate the damaged material, and contact the carrier for claim procedures.
INSTALLATION
General Information
************* ***** WARNING **** *************
PERSONAL INJURY - Before proceeding with the installation, be sure the operation selector switch is in the "stop" position.
These engine generator sets are available as an unhoused, skid mounted unit for indoor installation or a skid mounted unit with a standard or acoustical housing for outdoor installation. All versions of these units must be bolted solidly to a concrete pad. The transfer switch is mounted next to your distribution panel inside the building. Consult a qualified, licensed electrician or contractor to install and wire the transfer switch. The installation must comply with all national, state, and local codes.
***** CAUTION ****
EQUIPMENT DAMAGE - These units must be mounted on a solid concrete pad to prevent air from exiting under the unit. Allowing air to exit under the unit may cause the unit to overheat from lack of proper air flow.
“Concealed Damage” is understood to mean damage to the contents of a package which is not in evidence at the time of delivery by the carrier, but which is discovered later. The carrier or carriers are responsible for merchandise lost or damaged in transit. The title to goods rests with the consignee when genera­tors are shipped FOB factory, and only the consignee can legally file a claim.
**** CAUTION ****
EQUIPMENT DAMAGE - These units are shipped with oil, and a 50/50 mix of coolant. Be sure to check all fluid levels before operating. See engine manufacturer’s instruction manual for recommended oil requirements before initial starting.
UNPACKING:
1. Carefully remove the carton.
2. After inspecting the engine-generator for external physical damage, check for the following items packed inside the carton.
a. Owner’s manual, and wiring diagram. b. Engine manufacturer’s instruction manual.
3. Remove main frame hold down bolts, (4).
Before beginning the installation process recheck the rating of the generator set and it’s transfer switch rating. Be certain they can handle the intended load and are compatible with the entrance voltage, phase and current ratings. Plans for installation should be prepared with proper attention to mechanical and electrical engineering detail to assure a satisfactory system installation. The information in this manual is offered only as a guide to finalizing your installation plans. For full service switching the A.T.S. must have a fusible disconnect (circuit breaker) installed before the switch to protect the contacts.
ENGINE GENERATOR SET MOUNTING
The unit’s main frame should be bolted solidly to a 4 to 6 inch thick cement pad. The engine-generator is mounted on a sub­frame which is attached with special shock mounts to the main frame. This allows the engine-generator free movement without affecting the control panel which is mounted on the main frame.
Do not shock mount the main frame. Engine vibration will be transmitted to the control panel causing erroneous start/stop cycles and premature control failure.
The unit should be mounted to allow for ample working room around it. A general rule to follow is three (3) feet clearance on all sides.
4. Unit can now be lifted from shipping rails.
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FUEL INSTALLATION
The fuel supply should be as close as possible to the engine. This will reduce the installation cost of fuel runs. The information in this manual is offered to assist you in providing the proper fuel for your engine. However, this information is only provided to inform you of the engine’s requirements and assist in making you aware of the decisions you must make. In no case should the instructions or information provided be interpreted to conflict with any local, state or national codes. If in doubt, always consult your local fire marshal or gas supplier.
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************* ***** WARNING ****
*************
FIRE HAZARD - All fuel runs should be installed by a licensed fuel supplier.
Connect the fuel supply to the inlet of the fuel solenoid (see table for recommended line size). The pressure at the demand regulator must be four to six ounces psi (per square inch) or 7 to 11 inches W.C. (Water column) for vapor withdrawal units. On units equipped with liquid withdrawal fuel systems full tank pressure is plumbed to the fuel lock strainer mounted on the generator rails. The fuel converter mounted on the unit will handle both vaporization of the fuel and pressure reduction.
INSTALLING THE FUEL LINE
** NOTICE **
The engine generator sets are properly adjusted before they leave the factory for a specific fuel, either NG (natural gas), LP (liquid propane vapor) or LPG (liquid withdrawal propane). This fuel type is noted in your model number. If it becomes necessary to change the fuel type in the field see information on page 11.
Line Size (vapor system)
Unit location will determine the size of fuel line that is required to supply the engine with a constant fuel pressure. Refer to the tables below for fuel line size, fuel consumption and recom­mended tank size. For distances of 25 feet and over, a two regulator fuel system is recommended. This is accomplished by installing a primary regulator at the tank which will reduce the tank pressure down to 10 to 15 lbs. A secondary regulator is installed to further reduce the fuel pressure to the required six (6) oz. operating pressure. This secondary regulator must be at least 10 feet from the engine generator set. Any closer installation will require a larger line be installed to provide a fuel reservoir. If this is not done, the demand regulator on the unit and the pressure regulator in the fuel line will interfere with each other. When this two (2) stage regulator system is used, a fuel line size of 3/4 to 1 inch is generally adequate for distances up to 300 feet from the primary to the secondary regulator. (Consult your local fuel supplier for your exact requirements). The appropriate line size from the table below is then installed from the secondary regula­tor to the generator set.
************* ***** WARNING **** *************
PERSONAL DANGER - Do not use galvanized pipe in fuel line runs. The galvanized coating can become eroded and flake off, causing possible obstructions in the regulator or fuel valve. The results could range from inoperative engine start to hazardous fuel leaks.
Size of pipe normally required for generators operating on NATURAL/LP gas.
up to 25 feet* over 25 feet* PSS27LS 1" pipe not recommended PSS40LS 1" pipe use a two regulator system * Allow an additional 3 feet for each standard elbow.
Do not use ‘street ells’ (restrictive).
**** CAUTION ****
EQUIPMENT DAMAGE - Be careful when sealing gas line joints. Excessive sealing compound can be drawn into the solenoid, regulator or carburetor causing an engine malfunction.
FUEL PRESSURE (vapor system)
Correct fuel pressure cannot be stressed enough. The most common cause for inoperative systems is an inadequate or incorrect fuel pressure. Performance of the engine is in direct relation to the correctness of the fuel system. Shown below is a block diagram of a typical L.P. or N.G. Installation.
Supply Primary Secondary Generator Tank Regulator Regulator Set 1 2 3 4
TWO (2) REGULATOR FUEL SYSTEM
Supply Primary Generator Tank Regulator Set
123
SINGLE REGULATOR FUEL SYSTEM
Reference numbers 1 through 3 in the block diagrams above are fuel lines supplied by customer.
Reference number 4 is the engine generator set. Below is a table of the fuel pressure readings at each reference in
the system.
Fuel Pressure Table
Single Regulator (L.P. Vapor only)
123
UNIT OFF TANK PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
STARTING TANK PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
NO LOAD TANK PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
FULL LOAD TANK PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
Two (2) Regulator System (L.P. Vapor only)
1234
UNIT OFF TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz. 4-6 oz.
STARTING TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz. 4-6 oz.
NO LOAD TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz. 4-6 oz.
FULL LOAD TANK PSI 10-15 lbs 7-11 in 7-11 in
4-6 oz. 4-6 oz.
Natural Gas
134
UNIT OFF LINE PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
STARTING LINE PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
NO LOAD LINE PSI 7-11 in 7-11 in
4-6 oz. 4-6 oz.
FULL LOAD LINE PSI 7-11 in. 7-11 in
4-6 oz. 4-6 oz.
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Notice the preceding tables give two (2) different units of measur­ing fuel pressure. The first is with a pressure gauge calibrated in ounces per square inch. The second and most accurate is the use of a simple water manometer. A manometer is calibrated in inches of water column.
LP LIQUID WITHDRAWAL SYSTEMS
When installing a unit equipped with LP liquid withdrawal a primary regulator is not required on the supply tank. The supply line is connected to a liquid withdrawal valve on the supply tank and run directly to the fuellock strainer mounted on the engine generator set. Normally a 3/8 inch copper line is acceptable for this type of fuel installation. You must be sure that the valve you have connected to on the supply tank is in fact a liquid supply valve and has a drop tube inside the tank that is pulling fuel from the bottom of the supply tank. Before starting the unit you must confirm that you have a good liquid supply at the unit. Engine
generators sets equipped for liquid withdrawal will not run properly when supplied with high pressure vapor fuel.
LUBRICATION
Before starting the engine, check the oil level in the crankcase. If it is low, refill to the full mark with the proper weight/grade of oil as recommended by the engine manufacturer’s maintenance instructions. The necessity of using the correct oil, and keeping the crankcase full cannot be over emphasized. Failure to use the proper oil and keep the crankcase properly filled will cause excessive engine wear and shorten its useful life.
COOLANT
Before starting the engine, check the coolant level in radiator. If it is low, refill as specified in the engine manufacturer’s mainte­nance instructions. The radiator should be filled to about 1 inch below the filler neck. For additional information on engine coolant requirements see engine manufacturer’s maintenance instruc­tions.
INSTALLING THE BATTERY
**** CAUTION ****
EQUIPMENT DAMAGE - In the following battery installation procedure, check to be sure the selector switch remains in the “stop” position.
A customer supplied twelve-volt BCI group 24 battery rated 650 CCA (minimum) is required to complete the installation. Install the highest CCA rated battery available for best cold weather starting performance.
****WARNING*****
EQUIPMENT DAMAGE - Always connect the positive battery cable first and the negative cable last. When disconnecting a battery always disconnect the negative cable first and the positive cable last. Failure to follow these steps can cause arcing at the battery post which can cause damage to both the engine and the engine control module.
Observe polarities: Connect the positive (+) battery terminal to the (+) cable from the control panel; the negative (-) battery terminal is connected to the negative cable (ground) from the engine generator assembly.
NOTE: Always make sure that a new battery is fully charged before installing it on a generator set. Failure to do so can cause damage to the engine control module in the generator set.
All connections must be clean and tight. Check the electrolyte (fluid) in the battery monthly to be sure it is above the plates-refill as required. Never allow the battery plates to be exposed and never allow a battery to remain in a discharged condition.
CONNECTING THE BATTERY CHARGER & BLOCKHEATER
A two-stage battery tender is provided on all PSS series genera­tors. This battery tender charges at a rate of 750 mA until the battery is fully charged and then automatically switches to a 13.2 VDC float charger. The charger has an indicator light on it, red indicates it is charging, and green indicates it is in the storage mode (float charge). This charger is mounted on the engine generator set just below the engine control panel.
** NOTICE **
The trickle charger is not intended to recharge a battery which has become completely discharged. It is designed to produce just enough current to maintain a fully charged battery.
This battery tender requires a circuit breaker protected AC circuit from your distribution panel be run out to the engine generator set. These AC wires can be run in the same conduit as the other AC leads from the generator. It is suggested that this circuit be fused for 15 amps, then both the battery charger and the block heater can be connected to the same circuit. A 120 volt duplex receptacle is mounted on the generator just below the engine control panel, the battery tender is shipped already plugged into the receptacle.
The engine frost plug heater has been prewired with a 120 volt plug which can be plugged into the other side of the duplex receptacle after wiring 120 volt power feed to the receptacle. The frost plug heater has been prewired through a temperature sensor which will turn the heater on when the air temperature drops to 22 degrees F. and off when the air temperature reaches 30 Degrees F.
MOUNTING THE AUTOMATIC TRANSFER SWITCH (Winco Non-UL only)
The automatic transfer switch (A.T.S.) connects the load (lights, furnace, outlets, etc.) to the normal power line. When normal power fails, the A.T.S. starts the engine generator set, discon­nects the power line and then connects the load to the standby generator set. When normal power is restored, the automatic switch retransfers the electrical load to the normal service and stops the engine. The A.T.S. panel should be mounted as close to the distribution panel as possible.
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FIGURE 5
plete electrical system. In this case it will be necessary to install a secondary emergency distribution panel or purchase a larger transfer switch.
************* ***** WARNING ***** *************
PERSONAL INJURY - Be certain the operation selector switch on the front of the A.T.S. Control is in the “stop” position and the main power switch “off”. For your own protection, verify these important safety precautions yourself with reliable instruments before proceeding.
A.C. ELECTRICAL CONNECTIONS
Single Phase
The standby generator terminals in the A.T.S. are marked “GENERATOR - G1, G-N, G3”. The “hot” leads G1 and G3 wire directly to the top lugs on the generator side contactor, terminals G1 and G3. The G-N connection is made to the lug on the standoff just to the right of the generator side contactor.
The line terminals in the A.T.S. are marked “LINE - L1, L-N, L3”. The “hot” leads L1 and L3 will wire directly to the top lugs on the line side contactor. The L-N connection will be made on the standoffs just to the left of the line side contactor.
Three phase unit shown, for single phase
wiring disregard L-2, T-2, G-2.
************* ***** WARNING ***** *************
FIRE HAZARD - All wiring must be done by a licensed electri­cian, and must conform to the national electrical code and comply with all state and local codes and regulations. Check with the local authorities before proceeding!
PSS27LS - The Automatic Transfer Switch typically shipped with the PSS27LS system has a 230 Amp line side contactor installed to handle your normal power needs and a 150 Amp generator side contactor to handle the emergency generator output. Before installing the A.T.S. you must first ensure that the 230 Amp line side contactor will be sufficient to handle your complete service. See Figure 5. (i.e. the main line breaker must not be larger than 230 Amps) If you have 250, 300 Amp or larger system, you will not be able to transfer the complete electrical system. In this case it will be necessary to install a secondary emergency distribution panel or purchase a larger transfer switch.
PSS40LS - The Automatic Transfer Switch typically shipped with the PSS40LS system has a 230 Amp line side contactor installed to handle your normal power needs and a 150 Amp generator side contactor (230 Amp for single phase) to handle the emer­gency generator output. Before installing the A.T.S. you must first ensure that the 230 Amp line side contactor will be sufficient to handle your complete service. See Figure 5. (i.e. the main line breaker must not be larger than 230 Amps) If you have 250, 300 Amp or larger system, you will not be able to transfer the com-
The load terminals in the A.T.S. are marked “LOAD - T1, T-N, T3”. The “hot” leads T1 and T3 will wire directly to the lower lugs on the line side contactor. Jumper leads have already been installed between the lower lugs on the line side and the lower lugs on the generator side contactors. The T-N connection will be made on the standoffs just to the left of the contactor.
An equipment grounding lug is provided just above the T-N connection for your use in grounding the transfer switch.
Three Phase
The standby generator terminals in the A.T.S. are marked “GENERATOR - G1, G2, G3 and G-N. The “hot” leads G1 G2 and G3 wire directly to the generator side contactor, terminals G1, G2 and G3. The G-N connection is made to the lug on the standoff just to the right of the generator side contactor.
The line terminals in the A.T.S. are marked “LINE - L1, L2, L3 and L-N”. The “hot” leads L1, L2 and L3 will wire directly to the top lugs on the line side contactor. The L-N connection will be made on the standoff just to the left of the contactor.
The load terminals in the A.T.S. are marked “LOAD - T1, T2, T3 and T-N”. The “hot” leads T1, T2 and T3 will wire directly to the lower lugs on the line side contactor. Jumper leads have already been installed between the lower lugs on the line side and the lower lugs on the generator side contactors. The T-N connection will be made on the standoff just to the left of the contactor.
An equipment grounding lug is provided just above the T-N connection for your use in grounding the transfer switch.
All the neutral leads (G-N, L-N and T-N) must be carried through the A.T.S. These leads are all bonded together within the A.T.S. and are bonded to GROUND at one common point. If your
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system requires an isolated neutral, this neutral to ground bond can be isolated by removing the copper strap located between the LINE terminal L-N and the ground lug in the panel. This action, along with lifting the Neutral to Ground bond in the generator connection cabinet, will effectively change this unit to a fully isolated neutral system.
The generator output leads in the generator connection box follow the same marking pattern. i.e. G1, G-N and G3 on the single phase and G1, G2, G3 and G-N on the three phase units.
************* ***** WARNING ***** *************
EQUIPMENT DAMAGE - When installing a Three Phase 240 volt system be sure you know which lead is the high voltage "wild" leg (208 Volt line to neutral). The generator normally carries the high voltage on the G3 lead.
The load current carrying wires (L) and (T) must be sized to handle the maximum load current without excessive voltage drop. By code, the wire must be heavy enough to handle the full current rating of the main line circuit-breaker (or fuse) in the entrance (or sub-panel) protecting the contactor switch.
D.C. ELECTRICAL INTERCONNECTION
PSS27LS and PSS40LS
Two control wires are required between the A.T.S. panel and the generator control terminal box. Depending on the distance, 14 to 16 gauge stranded wire should be used. These wires will be labeled S1 and S23.
************* ***** WARNING ***** *************
Be sure both the mode switch on the Engine Generator and the mode switch in the Automatic Transfer Switch are in the "OFF" position before you make any DC interconnections.
The connections to the engine control will be made in a 2" X 4" connection box mounted on the back side of the generator control box just above the engine control. The wiring from the engine control has already been stubbed into this connection box for your convenience. The wires are labeled as follows:
Battery Negative #1 Yellow Wire S1 Start Signal #23 Yellow Wire S23
A fused disconnect (circuit breaker or fuses) must be installed between the engine generator and the A.T.S. panel. Failure to install a proper fused disconnect will void any warranty on the generator end. All wiring from the engine­generator to the transfer switch must be of sufficient size to handle the appropriate fused disconnect amperage.
All wires should be installed in rigid or flexible conduit. (Knock­outs are provided in the control box).
Because of the many different types of service, feeder, and distribution equipment, no specific wiring instructions can be provided. It is recommended that only copper wire be used. In all cases it is essential that while the load is connected to the generator, there can be absolutely no feedback from the genera­tor to the power line or the power line to the generator. When properly installed, the normal A.T.S. Control and safety systems will eliminate all paths for feedback.
To wire the automatic transfer switch into the existing wiring, first determine which circuits will be on the emergency load circuit. If the entire load is to be transferred, the transfer switch can be wired in directly after the watt-hour meter and the service entrance, providing the service entrance ampere rating is within the transfer switch’s rated capability.
If only specific circuits are to be powered under emergency power failure conditions, an additional distribution panel designated “emergency distribution panel” must be installed.
All selected emergency circuits are removed from main distribu­tion panels and installed in the emergency distribution panel. The A.T.S. is then installed between the main panel and the emer­gency distribution panel. Suggested circuits: freezer, refrigerator, furnace, emergency lights, sump pump, emergency outlet circuits, etc. Total running load must not exceed generator rating.
The connections in the automatic transfer switch will be made on a terminal block. This terminal block is located in the lower right hand corner on the back wall of the switch. The terminals are labeled S1, and S23.
These control wires MUST NOT be run in the same conduit as the AC power leads coming from the generator or the 120 volt circuit for the battery charger and block heater.
************* ***** WARNING ***** *************
EQUIPMENT DAMAGE - DC connections between Winco engine generators and other makes of Automatic Transfer Switches will vary. The Winco engine generator sets require a relay closure between Battery Negative (wire S1) and Start ( wire S23) to operate. The Battery Positive is not used in the A.T.S. panels. Connecting Battery Positive in any switch can cause permanent damage to the engine control module.
WINCO UL AUTOMATIC TRANSFER SWITCHES
If you are installing a UL transfer switch, there are a couple of terminal identification changes you will have to watch for, other­wise they basically wire up the same.
The DC terminal block in the UL switch is labeled 11 & 12. Wire S1 will connect to terminal #11 and S23 will connect to terminal #12.
The normal power line connection points in the UL-ATS are labeled N1, N2 for single phase and N3 is add for three phase.
The generator connection points in the UL-ATS are labeled E1 & E2 for single phase and E3 is added for three phase. When wiring single phase from the generator to the UL-ATS, G1 connects to E1 and G3 connects to E2.
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There is no neutral connection point in these switches so all three neutral leads (line neutral, generator neutral and load neutral) should be connected together and taped up. See the prints enclosed with UL-ATS panel for additional information.
************* ***** WARNING ***** *************
EQUIPMENT DAMAGE - The UL-ATS panels are voltage sensitive. Do not attempt to use a 240 volt ATS on a 208 volt system. Doing so will cause damage to the control circuits in the ATS panel. Contact the factory if you have any concerns or questions.
UL TRANSFER SWITCHES OTHER THAN WINCO
The WINCO engine generator set will work with almost any automatic transfer switch on the market today . Although we are switching the negative side of the start circuit, as long as the transfer switch has a set of "isolated dry" contacts for the start signal to pass through it will work. When using other transfer switch panels refer to the installation manual received with the switch for proper termination of wiring from the generator.
INITIAL START UP
PROCEDURE
Depress the “RUN” push-button on the front of the DGC. The engine-generator will crank and start automatically. If the engine fails to start, depress the “stop” push-button and correct the trouble before proceeding.
With the engine running smoothly check the no load voltage and frequency on the digitial display. The voltage should be 208/240/ 480 A.C. depending on which model you have and a frequency of
59.5 To 60.5 hertz (Hz). If you have the proper voltage at the generator the next step is to check the voltage at the generator terminals in the Automatic Transfer Switch. The voltage between the G1 and the G3 terminals should be the same as it was on the generator front panel. The voltage should also be checked between the hot terminals (G1 and G3) and the G-N to be certain of a balanced voltage output and a solid neutral connection. The voltage between G1 and G-N should be about 120 volts AC (277 on 480 units). The same approximate voltage should be found between terminals G3 and G-N (120 volts AC). On three phase panels the G2 voltage level should also be checked. ON 240
VOLT (DELTA) SYSTEMS BE SURE YOU KNOW WHERE THE HIGH VOLTAGE "WILD" LEG IS. IT MUST BE IN THE SAME LOCATION ON THE LINE SIDE AS IT IS ON THE GENERATOR SIDE. (i.e. if it's on L-3 on the line side it must be on G-3 on the
generator side.
************* ***** WARNING ***** *************
EQUIPMENT DAMAGE - DO NOT jump start these engine generator sets. Starting these units on a low battery or jump starting them will cause damage to the engine control module.
PRE-START CHECKLIST
Use the following check list to verify correct installation before starting the engine:
1. Engine oil. Fill as required with proper grade/qty.
2. Engine coolant. Fill as required with proper
mixture.
3. Unit mounting base properly bolted down.
4. Clearance for service and maintenance on all
sides.
5. Proper fuel line material and size.
6. All fuel line connections tight.
7. Fuel line protected and a moisture trap installed
(may be required for N.G.).
8. Correct LP/NG pressure 4-6 Oz. (7-11" Wc).
9. Battery connections clean and tight.
10. Battery fully charged.
11. All A.C. and D.C. wiring installed and properly
protected.
After completing the above checklist, the engine-generator
set is ready for the initial start-up test.
** Notice **
If for any reason during the check out procedure the voltage and frequency are not correct, depress the “STOP” push-button and correct the trouble before proceeding.
After verifying the that voltage and frequency are correct, depress the “STOP” push-button. The unit should shut off with no time delay. You are now ready to test the automatic start function.
WARNING:
If you are not utilizing a WINCO non UL A.T.S. panel, STOP here and refer to the manual received with the switch panel for the proper initial start up procedure. These procedures will vary depending on which A.T.S. panel you are using.
Move the toggle switch on the engine generator set to the “AUTO” position. Next move the selector switch on the A.T.S. panel to the “START” position. The unit should start up immedi­ately. If it fails to start at this time, the DC interconnection wiring is incorrect. Now when the toggle switch on the A.T.S. is moved to the “DISABLE” position the unit will shut off. As long as line power is still applied to the transfer switch during this test period the A.T.S. will not transfer the load to the generator.
Next you need to test the complete system. To accomplish this you will have to fail the incoming line power to the A.T.S. panel. First move both switches to the automatic position. Then fail the incoming power. All the loads connected to the A.T.S. should now be dead. The engine generator set should automatically start up. As soon as the engine generator set reaches operating speed the generator side contactor will close and the load will be applied to the engine generator.
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Restoring the line power will cause the generator side contactor in the A.T.S. to open and the line side to close as soon as the generator side is open. This sequence is controlled by the electrical and mechanical interlocks in between the two contac­tors in the A.T.S. panel. These interlocks ensure that you get a clean 'break before make' action in the transfer switch. The restoration of line power also sends a stop signal to the engine generator set. This stop signal will cause the unit to shut down.
This completes your installation and unit testing. ALWAYS leave the system in standby mode unless servicing the unit. For standby operation, keep both the generator set and transfer switch toggle switches in the “AUTOMATIC” position.
SETTING THE EXERCISER CLOCK
(Winco Non-UL only)
7. Push the "Day Select Button" to select the day you want the engine to stop. This must be the same day you selected in step 4 above.
8. With the "Hour" and "Minute" buttons, select the time you want the engine to stop. It is recommended you let the engine run at least 15 minutes during any exercise period.
9. Position the top right hand (RUN) slide switch to the center (RUN) position.
CLOCK NOTES:
This seven day exerciser clock has seven additional program cycles available. Always keep in mind the odd number turns the unit on and the even number shuts the unit off. (i.e. (3 on, 4 off) (5 on, 6 off) etc.
Setting the current time and date.
1. Position the top right hand (RUN) slide switch to the left position.
2. Push the clock's "Day Select Button" until the clock displays a triangle under the number corresponding to the current day of the week. (Monday is day 1, Sunday is day 7)
3. Push the "Hour Select Button" until the display indicates the correct hour. Note: For PM be sure there is a "P" displayed beside the correct hour.
4. Push the "Minute Select Button" until the display indicates the correct time in minutes.
5. Position the top right hand (RUN) slide switch to the center position. The correct time and date should now be displayed.
Setting the Exerciser Program:
NOTE: The programs on this clock are grouped. i.e. 1 and 2, 3
and 4, etc. The start time is programmed on the odd number and the stop time is programmed on the even number in each program set.
1. Position the top right hand (RUN) slide switch to the right hand position.
2. Position the top left hand (AUTO) slide switch to the center position.
3. Press the "Program Select Button" until No 1 is displayed on the clock to the right of the time.
4. Push the "Day Select Button" to select the day you want the engine generator set to start up and run. Note: You can get more than one triangle displayed on the clock. If this happens just keep pressing the button and it will work back through the cycle and display only one triangle under whichever day you desire.
5. With the "Hour" and "Minute" buttons select the time of day you want the engine to start up.
6. Press the "Program Select Button" until number 2 is dis­played on the clock.
The relay in the clock will not work unless the transfer switch is installed and powered up. The clock relay needs 120 volts AC to operate.
If, when you finish programming the clock, you get an EEEE on the display, it stands for error. The most common error is that the day of operation has not been properly set at each step or a program has been turned on and not turned off. i.e. programs not properly grouped 1& 2, 3 & 4, 5 & 6, etc.
On the face of the clock is a small button marked "R". This is a reset switch. Depressing this switch will remove all programming in the clock including the time. Use a small screwdriver or the tip of a pencil to depress this button. This should be used only as a last resort.
TROUBLESHOOTING TABLES
UNIT WILL NOT CRANK WHEN THE POWER FAILS.
1. Generator control switch not in "AUTOMATIC" position.
2. Transfer control switch not in "AUTOMATIC" position.
3. Incorrect wiring between transfer switch and generator.
4. Defective start stop relay in the transfer switch.
5. Blown in-line fuse for engine control module.
6. Defective engine control module.
7. Loose or dirty battery terminals.
8. Defective "Run/Auto" switch on generator or transfer switch.
9. Defective starter.
10. Defective start solenoid.
ENGINE WILL NOT CRANK WITH GENERATOR SELECTOR SWITCH IN THE RUN POSITION.
1. Battery dead.
2. Blown in-line fuse for engine control module.
3. Defective engine controller.
4. Loose or dirty battery terminals.
5. Defective "Run/Auto" switch on generator.
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6. Defective starter.
7. Defective start solenoid.
8. Locked up engine genset.
ENGINE CRANKS BUT WILL NOT START
1. Improper fuel pressure being delivered to unit.
2. Fuel supply shut off.
3. Fuel tank empty.
4. Defective spark plug.
5. Defective engine ignition module.
6. Dirty air cleaner filter.
7. Defective fuel solenoid valve.
8. Low battery.
9. Defective demand regulator.
1. Defective rotating diodes.
2. Defective voltage regulator.
3. Defective rotor.
4. Defective stator.
5. Defective exciter rotor.
6. Defective exciter stator.
7. AC short in the output leads.
NG/ LP CONVERSION
**** CAUTION ****
EQUIPMENT DAMAGE - Do not make any fuel adjustments or governor adjustments until all pressure readings are in compli­ance with specification. See fuel pressure charts (tables 1, 2, and 3).
ENGINE STARTS AND THEN STOPS AND FAULT LIGHT COMES ON
1. Engine is low on oil.
2. Engine has high water temperature.
3. Engine has overspeed.
4. Engine has gone into overcrank.
5. No output from engine alternator to engage stop crank circuit.
ENGINE WILL NOT COME UP TO SPEED AFTER IT STARTS
1. Insufficient fuel volume getting to the unit. a. Too small of fuel line. b. Fuel pressure too low/high.
2. Engine set up for the wrong fuel.
3. Governor is defective.
4. AC short in generator components.
ATS PANEL WILL NOT TRANSFER TO EMERGENCY SUPPLY (GENERATOR)
1. No AC generator output from generator.
2. Broken or defective mechanical/electrical interlocks.
3. Defective holding coil in the generator side contactor.
4. Wiring error between generator and transfer switch.
5. Defective start/stop relay
ATS PANEL WILL NOT RETRANSFER TO NORMAL POWER
1. Proper normal line power not available at line terminals in ATS panel.
2. Defective holding coil in line side contactor.
3. Broken or defective mechanical/electrical interlocks.
4. Defective start/stop relay.
5. Incorrect phase sequencing ( three phase only).
NO AC OUTPUT FROM GENERATOR
The engine generator sets covered in this manual are shipped for a specific fuel, either Liquid Propane (LP) vapor, Natural Gas (NG) or Liquid Withdrawal Propane (LPG). If it should be necessary to change the type of fuel used after a unit is received, the following procedures are provided.
NOTE: For conversion to/from liquid withdrawal LP consult the factory. Additional parts will be required for this conversion.
NATURAL GAS TO PROPANE VAPOR
1. Turn off fuel supply.
2. Remove the fuel line from the carburetor at the demand regulator.
3. Remove the cap on the upright column of the regulator. This will expose the pressure spring adjusting screw. Back off the spring adjusting screw so there is just enough room to replace the cover. Replace the cover.
4. Invert the regulator so it is positioned with the column pointing down.
5. Reconnect the fuel line at the regulator.
6. Remove the 1/8 NPT plug (the one closest to fuel solenoid) located on what is now the top of the regulator. Connect a fuel pressure meter or a manometer where the plug has been removed. Move the generator control switch to the run position. As the unit starts to crank the fuel solenoid will open and you should get a pressure reading of between 4 to 6 ounces (7 to 11 inches of water column).
7. If the pressure is correct, remove the meter and reinstall the pipe plug.
8. Next the timing on the engine must be changed. As this unit was shipped to operate on NG the timing advance was set at 36 degrees. For operation on LP it will be necessary for you to reset the timing advance to 26 degrees.
9. You are now ready to make the final fuel mixture adjustment. These engines were adjusted at the factory to produce about .7 to
3.4% CO. If you have the ability to test the CO, adjust the
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mixture on the carburetor until you achieve the proper CO reading. If you don't have a CO meter follow the manual adjust­ment procedure later in this section.
PROPANE VAPOR TO NATURAL GAS
1. Turn off fuel supply.
2. Remove the fuel line from the carburetor at the demand regulator.
3. Invert the regulator so the column is in the upright position.
8. Next the timing on the engine must be changed. As this unit was shipped to operate on LP the timing advance was set at 26 degrees. For operation on NG it will be necessary for you to reset the timing advance to 36 degrees.
9. You are now ready to make the final fuel mixture adjustment. These engines were adjusted at the factory to produce a .7 to
3.4% CO. If you have the ability to test the CO, adjust the mixture on the carburetor until you achieve the proper CO reading. If you don't have a CO meter follow the manual adjust­ment procedure later in this section.
4. Remove the cap on the upright column of the regulator. This will expose the pressure spring adjusting screw. Turn the screw all the way out (CCW) and then back in (CW) about 8 turns. The plug should be approximately half way down for initial starting.
5. Reconnect the fuel line at the regulator.
6. Remove the 1/8 NPT plug (the one closest to fuel solenoid) located on what is now the bottom of the regulator. Connect a fuel pressure meter or a manometer where the plug has been removed. Move the generator control switch to the "run" position. As the unit starts to crank the fuel solenoid will open and you should get a pressure reading of between 4 to 6 ounces (7 to 11 inches of water column).
7. If the pressure is correct, remove the meter and reinstall the pipe plug. Next remove the 1/8 inch NPT plug on the carburetor side of the regulator and install the pressure meter. Move the generator switch to the run position. As soon as the solenoid opens the pressure should rise to 2.5 to 3 oz. just as the engine starts to crank. If it is within this range replace the cap on the column. If not, adjust the screw down to increase and up to decrease and retest.
Manual Fuel Mixture Adjustment Procedure
1. Ensure the unit is operating under an 80 to 100% load or at the highest anticipated load.
2. Attach a frequency meter to monitor Hz.
Note: On these units the mixture adjustment is located on the carburetor just behind the fuel inlet hose. This mixture adjust­ment is a partial turn, lean to rich, load block.
3. If you are adjusting from LP to NG you will have to richen the adjustment and if you are going from NG to LP you will have to lean out the adjustment.
4. Begin making your appropriate mixture adjustment, observ­ing the Hz meter. If the meter begins to drop you have the mixture set too lean or too rich. Adjust the valve in the opposite direction. Adjustments should be made very slowly. Adjust back and forth until the steady 60Hz reading is achieved with mixture set as lean as possible.
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THREE PHASE-HIGH WYE
277/480 VOLTS
HIGH AND LOW WYE
THREE PHASE AC WIRING
THREE PHASE-LOW WYE
120/208 VOLTS
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THREE PHASE -DELTA
120/240 VOLTS
SINGLE PHASE
120/240 VOLTS
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THREE PHASE AC WIRING - DELTA
SINGLE PHASE AC WIRING
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VOLTAGE REGULATOR WIRING
THREE PHASE AND SINGLE PHASE
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DC SCHEMATIC LEGEND & WIRING ID
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DC SCHEMATIC
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Three Phase
120/240 Volt
120/240 Volts
Single Phase
27 KW INTERNAL GENERATOR CONNECTIONS
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Three Phase
277/480 Volt
Page 18
Three Phase
120/208 Volt
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120/208 Volt
Three Phase
277/480 Volt
Three Phase
40 KW INTERNAL GENERATOR CONNECTIONS
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Single Phase
120/240 Volts
Page 19
120/240 Volt
Three Phase
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PSS40LS
OUTLINE
DRAWING
AND WIRING
ENTRANCE
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PSS27LS
OUTLINE
DRAWING
AND WIRING
ENTRANCE
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12 MONTH LIMITED WARRANTY
WINCO, Incorporated warrants to the original purchaser for 12 months that goods manufactured or supplied by it will be free from defects in workmanship and material, provided such goods are in­stalled, operated and maintained in accordance with WINCO written instructions.
WINCO’s sole liability, and Purchaser’s sole remedy for a failure under this warranty, shall be limited to the repair of the product. At WINCO’s option, material found to be defective in material or work­manship under normal use and service will be repaired or replaced. For warranty service, return the product within 12 months from the date of purchase, transportation charges prepaid, to your nearest WINCO Authorized Service Center or to WINCO, Inc. at Le Center Minnesota.
THERE IS NO OTHER EXPRESS WARRANTY. To the extent permitted by law, any and all warranties, including those of merchantability and fitness
for a particular purpose, are limited to 12 months from date of purchase. In no event is WINCO liable for incidental or consequential damages.
Note: Some states do not allow limitation on the duration of implied warranty and some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply in every instance. This warranty gives you specific legal rights which may vary from state to state.
WINCO reserves the right to change or improve its products without incurring any obligations to make such changes or improvement on products purchased previously.
EXCLUSIONS: WINCO does not warrant engines, batteries, or other component parts that are warranted by their
respective manufacturers. WINCO does not warrant modifications or alterations which were not made by WINCO, Inc. WINCO does not warrant products which have been subjected to misuse and/or negligence or have
been involved in an accident.
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