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5

OPM-142/D

INTRODUCTION

TESTING POLICY

Before any generator is shipped from the factory, it is fully 

checked for performance. The generator is loaded, and the 

voltage, current, and frequency are carefully checked.

Rated output of generator 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 applicable engines.

The WINCO power take-off generators are designed 

primarily for farm use as a standby electrical power supply, 

utilizing the power take-off of a tractor or truck as the prime 

mover. This PTO drive generator will provide, 120/240V 

1-PH, 120/208V 3-PH, 120/240V 3-PH, or 277/480V 3-PH 

(depending on model), 60Hz electrical service when 

properly driven. 

DO NOT

 operate and/or store the unit outside during 

inclement weather without adequate protection from the 

elements. Failure to do so will damage the unit.

It is acceptable to use this generator with a tractor with 

less HP output than required for full power operation. The 

generator will work but produce only as much kW output 

as the tractor can supply HP for. For example, a 20 HP 

output tractor will deliver a maximum of approximately 10 

kw. 

If you are using a tractor with more HP than required to 

run the generator care should be taken to ensure that you 

do not overload the generator causing overheating and 

equipment damage. Observe input RPM specifications.

The generator may be foundation mounted for use as 

standby power source, or trailer mounted, and used 

as portable electrical power sources for areas where 

commercial power is not readily available, such as out 

buildings.

This generator includes a frequency meter to warn against 

high or low frequency, three output power receptacles, 

an overload protection circuit, and an electronic excitation 

circuit. To reduce maintenance problems, the coupling 

between the generator input shaft and rotor consists of 

precision helical gearing rather than a chain link drive. The 

input shaft is a 1 3/8in. 6-spline.

IMPORTANT: THE MANUFACTURER STRONGLY 

RECOMMENDS RUNNING THE GENERATOR UNDER 

LOAD AT LEAST ONCE A MONTH IN ORDER TO 

EVAPORATE ANY ACCUMULATED MOISTURE 

CONDENSATION.

PREPARING THE UNIT

UNPACKING

CAUTION: EQUIPMENT DAMAGE

When you unpack your new generator, be sure to remove 

all of the information sheets and manual from the carton.

1. As you receive your unit, it is critical to check it for any 

  damage. If any damage is noted, it is always easiest to 

  refuse the shipment and let WINCO take care of the 

  freight claim. If you sign for the unit, the transfer of the 

  ownership requires that you file the freight claim

2. Before proceeding with the preparations of your new 

  generator for operation, take a couple of minutes to 

  ensure the unit you have received is the correct model 

  and review the specification pages in this manual to 

  ensure that this unit meets your job requirements.

Summary of Contents for W70PTO

Page 1: ...should ever need to contact us concerning this unit it will help us to respond to your needs faster MODEL __________________________________________________ SERIAL NUMBER ____________________________...

Page 2: ...should be followed during installation and maintenance of the generator Read and understand all instructions in the manual before starting and operating the generator Keep this manual available for f...

Page 3: ...ONS This engine generator set has been designed and manufactured to allow safe reliable performance Poor maintenance improper or careless use can result in potentially deadly hazards from electrical s...

Page 4: ...se Single Amps 287 Power Factor 1 0 Input Speed 540 RPM Generator Speed 1800 RPM Input Shaft 1 3 4 20 Spline Required Tractor PTO HP 138 W70PTOS Continuous Watts 69 000 Volts 120 240 Phase Single Amps...

Page 5: ...rator causing overheating and equipment damage Observe input RPM specifications The generator may be foundation mounted for use as standby power source or trailer mounted and used as portable electric...

Page 6: ...t or nearly straight line between the power take off and the generator input shaft Misalignment must be less than 15 degrees during generator operation even though the mechanical design of the tumblin...

Page 7: ...only has to be sized to the amperage of the circuit breaker in the main distribution panel that is feeding it Before deciding which system to install first determine which loads you can safely run on...

Page 8: ...ervice hook up make sure load to be transferred to standby generator will not exceed generator rating Watthour Meter Watthour Meter To Power Line Master Switch To Power Line Master Switch Distribution...

Page 9: ...ning how much load can be applied to the generator and how it should be distributed among the generator output receptacles the following formulas may be useful Get load voltages current and wattage fr...

Page 10: ...d slowly increase engine speed until the output reaches approximately 240 to 245 volts in green portion of voltmeter scale 5 Plug 4 wire load cord set into receptacle Place transfer switch in the emer...

Page 11: ...d or short circuit must be reset by moving to off before re closing 7 With engine and generator running smoothly switch on the electrical load while watching the frequency meter Adjust engine throttle...

Page 12: ...ons or in severe weather such as rain or blowing snow LUBRICATION The generator bearings are factory lubricated and sealed and require no further lubrication The splined generator input shaft should b...

Page 13: ...l box Inspect all wiring for correct routing fraying insulation and secure connections 2 Remove end cover Vacuum or blow dust and debris from the inside of the generator Inspect wiring for loose conne...

Page 14: ...ary 2 Reduce load if it is higher than the rated capacity of the generator see generator nameplate 3 Generator requires 2 HP 1000 watt output Obtain larger engine if necessary 4 Repair adjust or repla...

Page 15: ...15 OPM 142 D WIRING DIAGRAM BACK VIEW 0 1 2 0 34 5 6 37 8 6 9 6 9 9...

Page 16: ...you may have other rights which vary from state to state Note Some states do not allow limitation on the duration of implied warranty and some states do not allow the exclusion or limitation of incid...

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