PACKAGED STANDBY SYSTEM INSTALLATION AND OPERATORS MANUAL PSS25000/A Automatic Transfer Switch PSS25000/A Engine Generator P/N 60706-171-5076-10
Read and understand all instructions in the manual before starting and operating the generator set. PROPER USE AND INSTALLATION You must be sure your new engine generator set is: * * * * * * * 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 service.
SAFETY INFORMATION 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.
TESTING POLICY: Optional UL Automatic Transfer Switch Sizes 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. UNIT 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.
SPECIFICATIONS UNPACKING INSTRUCTIONS GENERATOR ** NOTICE ** MODEL PSS25000 PSS25000-4 PSS25000-17 PSS25000-18 WATTS* VOLTS 25,000 25,000 25,000 25,000 120/240 120/208 120/240 277/480 Pf AMPS* HZ pH RPM 1.0 .8 .8 .8 104.0 86.8 75.3 36.6 60 60 60 60 1 3 3 3 3600 3600 3600 3600 *Derate 10% for Natural Gas operation. Derate 3.5% per 1000 feet elevation above sea level. FUEL CONSUMPTION NG 1000 BTU/CU FT MODEL CF/HR BTU/HR LP 2520 BTU/CU FT #/HR GAL/HR CF/HR BTU/HR PSS25000* 375 17.
INSTALLATION FUEL INSTALLATION General Information NOTE: All PSS25000 units are tested on Natural Gas and shipped configured for Natural Gas. See page 6 for conversion to LP ************* ***** WARNING **** ************* Before proceeding with the installation, be sure the operation selector switch is in the stop position. These engine/generator sets are designed to be mounted on a concrete pad outdoors only.
also true for the single dual stage regulators, they should also be minimum of 10 feet from the unit. 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 1/2 to 5/8 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.
2. Begin making a mixture adjustment. Adjustments should be made very slowly. Adjust back and forth until the engine is running as smooth as possible. Natural Gas 1 UNIT OFF LINE PSI STARTING LINE PSI NO LOAD LINE PSI FULL LOAD LINE PSI 3 4 7-11 in 4-6 oz. 7-11 in 4-6 oz. 7-11 in 4-6 oz. 7-11 in 4-6 oz. 7-11 in 4-6 oz. 7-11 in 4-6 oz. 7-11 in 4-6 oz. 7-11 in 4-6 oz. 3. The PSS25000 is equipped with an electronic governor which requires no speed adjustment.
6. 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 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. 7.
The Automatic Transfer Switch connects the load (lights, furnace, outlets, etc.) to the normal power line during standby. 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.
FIGURE 4 PARTIAL SYSTEM SINGLE PHASE 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 lugs between the two contactors marked “LOAD”. Copper jumper straps have already been installed between the upper terminals on the generator contactor and the lower terminals on the line side contactors. The T-N connection will be made on the stand-off in the bottom of the ATS.
NOTE: Code requires a fuse disconnect (circuit breaker) be installed in the incoming power line wiring directly in front of the A.T.S. panel. This will allow you to test the generator under load. Should you ever have to work on the switch, you will be able to disconnect the power and work on the switch cold without having the power company pull your meter. To wire the automatic transfer switch into the existing wiring, first determine which circuits will be on the emergency load circuit.
ASCO 300 UL SWITCH Your DC connection points in the ASCO 300 ATS are terminals “14” and “15”. Depending on the size of the switch they are located in different locations. See below: 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.
F Proper fuel line material, and size. F All fuel line connections tight. F Fuel line protected and a moisture trap installed (may be required for NG). F LP/NG pressure O.K. 4-6 Oz. (7-11" WC). F Battery connections clean and tight. F Battery fully charged. F All A.C. and D.C. wiring installed and properly protected. * Refer to engine owners manual for proper levels and type. 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.
8. Defective start solenoid. 9. Defective remote start solenoid. 10. Locked up engine generator set. NO AC OUTPUT FROM GENERATOR. 1. 2. 3. 4. 5. 6. 7. 8. ENGINE CRANKS BUT WILL NOT START. 1. 2. 3. 4. 5. 6. 7. 8. Improper fuel pressure being delivered to unit. Fuel supply shut off. Fuel tank empty. Defective spark plug. Defective engine ignition module. Dirty air cleaner filter. Defective fuel solenoid valve. Low voltage from battery to fuel solenoid, must hold 12 volts during cranking.
110/60ATS-3/C 230/150ATS-3/C NON-UL ATS SCHEMATIC 230/150ATS-4/D 230/150ATS-17/D NON-UL ATS SCHEMATIC LEGEND LTS GTS SSR EC 60706-171 Line Side Contactor Generator Side Contactor Start/Stop Relay Exerciser Clock Indicates Wire Number GTS/AUX LTS/AUX UVR SSS PAGE 14 Generator Side Auxiliary Line Side Auxiliary Under Voltage Relay Start/Stop Switch 5076-10
WINCO/ZENITH UL ATS Complete installation instructions for WINCO/ZENITH UL Automatic Transfer Switches are contained in the operator manual with each switch. Read the complete instructions before installing.
ASCO 165 UL ATS Complete installation instructions for the ASCO 165 UL Automatic Transfer Switches are contained in the operator manual with each switch. Read the complete instructions before installing.
NON-UL ATS PANEL OUTLINE DIMENSIONS ATS SIZE 110/60 ATS 230/150 ATS 400/320 ATS REF A 17.00” 22.90” 28.00” REF B 8.00” 14.00” 16.00” REF C 8.10” 10.63” 12.68” REF D 20.00” 28.00” 36.00” REF E 12.375” 18.375” 23.
PSS25000 DC SCHEMATIC 60706-171 PAGE 18 5076-10
120/208 VOLT THREE PHASE 277/480 VOLT THREE PHASE PSS25000 AC SCHEMATIC 5076-10 PAGE 19 60706-171
PSS25000 AC SCHEMATIC 120/240 VOLT SINGLE PHASE 120/240 VOLT THREE PHASE 5076-10 PAGE 20 60706-171
MAINTENANCE LOG DATE ITEM WORK PERFORMED
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.
