Philips pm2521 - 5. INSTALLATION; 5.1.1. Safety instruction; 5.1.2. Replacing the main fuse

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5. INSTALLATION
5.1. MAINS SUPPLY
5.1.1. Safety instruction
*
Before inserting the mains plug into a mains socket, ensure that the instrument is set for the correct local mains
voltage.
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¬
tenance and repair during which the instrument will be opened.
If 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. Replacing the main fuse
The mains fuse is situated in the mains socket at the rear of the instrument. (Fig. 23, page 142).
Also the spare fuse for the set mains voltage is situated in the combined mains-socket/fuse-holder.
Mains voltage Required fuse
110V-220V-240V 125mA (fast blow)
<i
Make sure that only fuses with the required rated current and of the specified type are used. (IEC127-I and
F0,125c DIN 41571).
The use of make shift fuses and the short-circuiting of fuse holders are prohibited.
5.1.3. Adaption to the mains voltage
0 The PM2521 is delivered from the factory in the 220V 50Hz ... 60Hz version. Adaption to 110V, 240V is
possible by altering the wiring on the mains transformer.
For adaption proceed as follows:
— Remove the top cover (Fig. 12 page 138) as follows:
— Place the handle in its bottom position.
— Remove the two fixing screws which attach the top cover to the bottom cover (Fig. 23, page 142).
— Lever the top cover and pull it backwards.
The mains transformer is located in the top cover. It is plugged into the motherboard.
— Alter the wiring on the mains transformer as shown in Fig. 13, page 138.
It is not necessary to replace the mains fuse when the PM2521 is adapted to another mains voltage.
Only in case of a defective mains fuse it should be replaced.
5.1.4. Adaption to the mains frequency
The PM2521 can be used with a mains frequency from 47Hz up to 63Hz without modification.