Installation; Mains Supply; Replacing The Main Fuse; Adaption To The Mains Voltage/Frequency - Philips pm2521 Operating Manual

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5 . I N S T A L L A T I O N
5 . 1 . M A I N S S U P P L Y
5 . 1 . 1 . S a f e t y i n s t r u c t i o n
B e f o r e i n s e r t i n g t h e m a i n s p l u g i n t o a m a i n s s o c k e t , e n s u r e t h a t t h e i n s t r u m e n t i s s e t f o r t h e c o r r e c t l o c a l m a i n s
v o l t a g e .
WARNING: The opening of covers or removal of parts, except those to which access can be gained by hand
is likely to expose live parts, and accessible terminals may also be live.
The instrument shall be disconnected from all voltage sources before any replacement or main-
t e n a n c e a n d r e p a i r d u r i n g w h i c h t h e i n s t r u m e n t w i l l b e o p e n e d .
lf afterwards, any adjustment, maintenance or repair of the opened instrument under voltage
conditions is inevitable, it shall be carried out only by a skilled person who is aware of the hazard
involved.
Bear in mind that capacitors inside the instrument may still be charged even if the instrument is
separated from all voltage sources.
5 . 1 . 2 .
R e p l a c i n g t h e m a i n f u s e
T h e m a i n s f u s e i s s i t u a t e d i n t h e m a i n s s o c k e t a t t h e r e a r o f t h e i n s t r u m e n t . ( F i g . 2 3 , p a g e 1 4 2 1 .
A l s o t h e s p a r e Í u s e Í o r t h e s e t m a i n s v o l t a g e i s s i t u a t e d i n t h e c o m b i n e d m a i n s - s o c k e t / f u s e - h o l d e r .
M a i n s v o l t a g e R e q u i r e d f u s e
1 1 0 V - 2 2 0 V - 2 4 0 V
1 2 5 m A ( f a s t b l o w )
M a k e s u r e t h a t o n l y Í u s e s w i t h t h e r e q u i r e d r a t e d c u r r e n t a n d o Í t h e s p e c i f i e d t y p e a r e u s e d . ( l E C 1 2 7 - l a n d
F O , 1 2 5 c D I N 4 1 5 7 1 ) .
T h e u s e o f m a k e s h i Í t f u s e s a n d t h e s h o r t - c i r c u i t i n g o f f u s e h o l d e r s a r e p r o h i b i t e d .
5 . 1 . 3 . A d a p t i o n t o t h e m a i n s v o l t a g e
T h e P M 2 5 2 1 i s d e l i v e r e d f r o m t h e f a c t o r y i n t h e 2 2 0 V 5 0 H z . . . 6 0 H z v e r s i o n . A d a p t i o n t o l l 0 V . 2 4 0 V i s
p o s s i b l e b y a l t e r i n g t h e w i r i n g o n t h e m a i n s t r a n s f o r m e r .
F o r a d a p t i o n p r o c e e d a s f o l l o w s :
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R e m o v e t h e t o p c o v e r ( F i g . 1 2 p a g e 1 3 8 ) a s f o l l o w s :
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P l a c e t h e h a n d l e i n i t s b o t t o m p o s i t i o n .
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Remove the two fixing screws which attach the top cover to the bottom cover (Fig. 23, page 142\.
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L e v e r t h e t o p c o v e r a n d p u l l i t b a c k w a r d s .
T h e m a i n s t r a n s f o r m e r i s l o c a t e d i n t h e t o p c o v e r . l t i s p l u g g e d i n t o t h e m o t h e r b o a r d .
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A l t e r t h e w i r i n g o n t h e m a i n s t r a n s f o r m e r a s s h o w n i n F i g . 1 3 , p a g e 1 3 8 .
I t i s n o t n e c e s s a r y t o r e p l a c e t h e m a i n s f u s e w h e n t h e P M 2 5 2 1 i s a d a p t e d t o a n o t h e r m a i n s v o l t a g e .
O n l y i n c a s e o f a d e f e c t i v e m a i n s f u s e i t s h o u l d b e r e p l a c e d .
5 . 1 . 4 .
A d a p t i o n t o t h e m a i n s f r e q u e n c y
T h e P M 2 5 2 1 c a n b e u s e d w i t h a m a i n s f r e q u e n c y ' f r o m 4 7 H z u p t o 6 3 H z w i t h o u t m o d i f i c a t i o n .