n
-Measure the insulation across one of the
soldered terminals of the rotor and the core.
’
(Fig. 1 l-6)
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If insulation is bad, replace rotor with a new
one.
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Fig. 7 1-6
11-2 AC VOLTAGE IS TOO HIGH OR TOO LOW
11-2-l CHECKING ENGINE SPEED
If the engine speed is too high or too low, adjust it ’
to the rated r.p.m.
,
HIGH SPEED fl ?y LOW SPEED ,
[How to adjust engine r.p.m.1
n
Loosen the lock nut on the adjusting screw
n
Turn the adjusting screw clockwise to de-
crease engine speed or counter-clockwise to
increase engine speed.
Kormal engine speed at no load is :
3100 - 3150 r.p.m. for 50Hz type
3700 - 3750 r.p.m. for 60Hz type
I
1 l-2-2 CHECKING CONDENSER
Check condenser referring to Step 11-1-1.
11-2-3 CHECKING STATOR
Check stator referring to Step 11-l-2.
1 l-2-4 CHECKING ROTOR
Check rotor referring to Step 11-1-3.
\
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0
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ADJUSTING BOLT
I
I
:
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Fig. 1 l-7
- 71 -
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