Baldor BALDOR GENERATOR, PC13R manual Mow to adjustengine r.p.m

2)Measure the resistance of field coil with a circuit tester. (See Fig. 11-3.)

(R x 195 10%)

NORMAL RESISTANCE

lRemedy1

If theresistance is not normal, replace rotor with new one.

Fig. 11-3

3)Check the magnetic force of magnets molded in the rotor.

[Remedy1

1.If the magnetic force is weak, replace the rotor with a new one.

2.If the diode or the resistor is faulty, replace rotor assembly with new one. When all removed these parts aregood, assemble them and then solder.

11-2 AC VOLTAGE ISTOO HIGH OR TOO LOW

11-2-1CHECKINGENGINE r.p.m. .

If the engine r.p.m. is too high or toolow, adjust it to the rated r.p.m. .

mow to adjustengine r.p.m. .]

Loosen the nut on theadjusting screw.

H Turntheadjustingscrew clockwise toin de-

creaseenginespeedor counter-clockwise to increase engine speed.

Normal engine speed at no load is : 3750 - 3800 r.p.m.

11-2-2 CHECKINGSTATOR

Check stator referring to Step11-1-1.

11-2-3 CHECKING CONDENSER

d

Fig. 7 1-5

Check condenser referringto Step 11-1-2.

11-2-4 CHECKING ROTOR

Check rotor referring to Step 11-1-3.

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