Cutout Relay Unit: T h i s r e q u i r e s t h r e e c h e c k s a n d a d j u s t m e n t s : a i r g a p , point opening and c l o s i n g
voltage.
The a i r g a p a n d point opening a d j u s t m e n t s m u s t b e m a d e with the b a t t e r y d i s c o n n e c t e d !
ARMATURE STOP
(Bend t o a d j u s t
ARMATURE
(Raise o r
t o a d j u s t a i r gap)
AIR GAP
(Armature
t o c o r e )
FIGURE 7-2
--
CUTOUT RELAY ADJUSTMENTS
1.
A i r Gap: P l a c e f i n g e r s o n the a r m a t u r e d i r e c t l y above the c o r e and p r e s s a r m a t u r e down
u n t i l the p o i n t s j u s t c l o s e , then m e a s u r e the a i r gap b e t w e e n the a r m a t u r e a n d the c e n t e r
of the c o r e . Gap should b e
A d j u s t by r a i s i n g o r l o w e r i n g a r m a t u r e a t i t s
mounting. R e t i g h t e n s c r e w s a f t e r a d j u s t m e n t .
AIR GAP
(Measured between
Armature and Core w i t h p o i n t s t o u c h i n g )
UPPER CONTACT SUPPORT
screw i n t o
ADJUSTING SCREWS
(Loosen and s h i f t s u p p o r t
t o a d j u s t a i r gap)
FIGURE 7-3
--
CURRENT-VOLTAGE ADJUSTMENTS
2 .
P o i n t Opening: A d j u s t point opening by bending the a r m a t u r e stop. Opening should b e
, 0 2 0 " .
3 .
C l o s i n g Voltage: Adjust c l o s i n g voltage by t u r n i n g s c r e w c l o c k w i s e t o i n c r e a s e s p r i n g
t e n s i o n and v o l t a g e , c o u n t e r c l o c k w i s e t o d e c r e a s e s p r i n g t e n s i o n a n d c l o s i n g voltage.
B e
s u r e t h a t c l o s i n g voltage a d j u s t m e n t i s a t l e a s t 0. 5 volt l e s s than the c u r r e n t voltage r e g u -
l a t o r u n i t s e t t i n g . T h i s should b e 1 2 . 8 v o l t s .
C u r r e n t - V o l t a g e R e g u l a t o r Unit: T h i s r e q u i r e s two i n s p e c t i o n s and a d j u s t m e n t s : The a r m a t u r e a i r
gap and the voltage s e t t i n g . D i s c o n n e c t b a t t e r y b e f o r e making t h e s e a d j u s t m e n t s .
1.
A r m a t u r e A i r Gap: To c h e c k a i r g a p , p u s h the a r m a t u r e down until c o n t a c t points a r e
s t i l l j u s t touching, t h e n m e a s u r e a i r gap. T h i s s h o u l d be
A d j u s t by loosening con-
t a c t m o u n t i n g s c r e w s and r a i s i n g o r l o w e r i n g the c o n t a c t b r a c k e t a s r e q u i r e d . Be s u r e
points a r e lined up and s c r e w s a r e r e t i g h t e n e d a f t e r a d j u s t m e n t and b e f o r e r e s e t t i n g voltage
s e t t i n g .
2 .
Voltage Setting: A d j u s t the voltage s e t t i n g by t u r n i n g a d j u s t i n g s c r e w - - c l o c k w i s e t o
t h e voltage s e t t i n g a n d c o u n t e r c l o c k w i s e t o d e c r e a s e the voltage s e t t i n g . A f t e r
e a c h a d j u s t m e n t , r e p l a c e c o v e r a n d allow a m p l e running t i m e t o a g a i n s t a b i l i z e voltage and
t e m p e r a t u r e b e f o r e r e c h e c k i n g the voltage setting.
CAUTION: If a d j u s t i n g s c r e w i s t u r n e d down ( c l o c k w i s e ) beyond n o r m a l r a n g e r e q u i r e d f o r a d j u s t m e n t ,
the s p r i n g s u p p o r t m a y f a i l t o r e t u r n when p r e s s u r e i s r e l i e v e d . If t h i s h a p p e n s , t u r n s c r e w c o u n t e r -
c l o c k w i s e until enough c l e a r a n c e d e v e l o p s b e t w e e n the s c r e w h e a d and s p r i n g s u p p o r t . Then bend
s p r i n g s u p p o r t u p w a r d c a r e f u l l y with a s m a l l p l i e r s until c o n t a c t i s m a d e with the s c r e w head. The
f i n a l s e t t i n g should a l w a y s b e a p p r o a c h e d b y i n c r e a s i n g s p r i n g t e n s i o n . In o t h e r w o r d s , if setting i s
t o o high, unit should b e a d j u s t e d below the r e q u i r e d value t h e n r a i s e d t o the e x a c t s e t t i n g
i n c r e a s i n g
s p r i n g t e n s i o n . Be s u r e s c r e w i s e x e r t i n g f o r c e on h a n g e r .
