Dyna LC1500 Installation, Operation And Maintenance Instructions

Contents

Dyna LC1500 Installation, Operation And Maintenance Instructions Manual pdf 5 page image

Page 360707-101 DYNA SERIESStarting Electric Motors - Electric motors require much morecurrent (amps) to start them than to run them. Somemotors, particularly low cost split-phase motors, are veryhard to start and require 5 to 7 times as much current tostart them as to run them. Capacitor motors are easier tostart and usually require 2 to 4 times as much current tostart them as to run them. Repulsion Induction motors arethe easiest to start and usually require 1 1/2 to 2 1/2 timesas much to start them as to run them.Most fractional horsepower motors take about the sameamount of current to run them whether they are ofRepulsion-Induction (RI), Capacitor (Cap), or Split-Phase(SP) type. The chart below shows the approximate currentrequired to start and run various types and sizes of 120 volt60 cycle electric motors under average load conditions.RUNNING STARTING AMPSHP AMPS SP CAP RI1/6 3.2 16 TO 22 6 TO 13 5 TO 81/4 4.5 22 TO 32 9 TO 18 7 TO 121/3 5.2 26 TO 35 10 TO 21 8 TO 171/2 7.2 NOT MADE 14 TO 29 11 TO 181 13.0 NOT MADE 26 TO 52 20 TO 33The figures given above are for an average load such as ablower or fan. If the electric motor is connected to a hardstarting load such as an air compressor, it will requiremore starting current. If it is connected to a light load, or noload such as a power saw, it will require less startingcurrent. The exact requirement will also vary with the brandor design of the motor.Self-excited generators respond to severe overloadingdifferently than the power line. When overloaded, theengine is not able to supply enough power to bring theelectric motor up to operating speed. The generatorresponds with high initial starting current, but the enginespeed drops sharply. The overload may stall the engine. Ifallowed to operate at very low speeds, the electric motorstarting winding will burn out in a short time. The generatorwinding might also be damaged.CAUTION: EQUIPMENT DAMAGERUNNING THE GENERATOR SET UNDER THESECONDITIONS MAY RESULT IN DAMAGING THEGENERATOR STATOR AS WELL AS THE MOTORWINDING.Because the heavy surge of current required for startingmotors is required for only an instant, the generator will notbe damaged if it can bring the motor up to speed in a fewseconds of time. If difficulty is experienced in startingmotors, turn all other electrical loads off and if possiblereduce the load on the electric motor.UNPACKINGCAUTION: EQUIPMENT DAMAGETHIS UNIT HAS BEEN SHIPPED WITHOUT OIL. Failure tomaintain the engine oil at the proper level will result inserious engine damage.These portable units require large quantities of fresh air forcooling of both the engine and the generator. Fresh air isdrawn from both the engine end and the generator endand is exhausted at the center of the unit. For safety, longlife and adequate performance, these units should neverbe run in small compartments without positive fresh airflow.RESTRICTED USESDO NOT remove from the cradle assembly. Removal of thegenerator from the cradle assembly may causeexcessive vibration and damage to the engine generatorset.DO NOT install and operate these portable generators in asmall compartment., i.e. generator compartment ofvehicles, motor homes or travel trailers. Thesecompartments will not allow enough free flow fresh air toreach the engine generator set for cooling and willcause the unit to overheat damaging both the engine andthe generator. Small compartments will also develop hotspots where there is very little air flow and may cause afire.DO NOT attempt to operate at 50 cycles. These units aredesigned and governed to operate at 60 Cycles only.UNIT CAPABILITIESGenerator Connections - The diagram below represents atypical 4000 watt generator. Receptacles A and B are thetwo 120 Volt duplex receptacles. Up to 2000 watts at 120volts (16.6 Amps) can be taken from the generator ateach of the receptacles. This generator produces 120and 240 volt, 60 Hz (Hertz), AC (Alternating Current).CAUTION: EQUIPMENT DAMAGECAUTION MUST BE EXERCISED TO PREVENTOVERLOADING EITHER OF THE GENERATOR 120VOLT OUTPUT CIRCUITS (A OR B).Check the appliance or tool nameplates for the current andvoltage to insure compatibility. Remember that powertaken from receptacle C reduces the power available atboth A and B. Any remaining 120 volt loads should beequally divided between A and B. Failure to split the loadwill cause permanent damage to the stator. Althoughcircuit breakers are provided, damage due to overloadingconstitutes abuse and will not be warranted. Refer to thegenerator nameplate for your unit's capabilities.BASIC INFORMATION