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Installation 3
Electrical Connections
Electrical Connections
The rear panel of the 402 Dilutor-Dispenser houses:
- sector block containing the power socket, fuse
drawer and ON/OFF switch,
- keypad connector,
- probe connector,
- GSIOC connector.
Sector Block
The sector block contains the power socket, fuse
holder and ON/OFF switch. Your 402 can be
connected to a 100-120 VAC or a 220-240 VAC
supply. In either case, two 1A type “T” slow blow
fuses must be installed (reference 6730104006).
Voltage Selector
The instrument has no physical voltage selector.
The 402 Dilutor-Dispenser can be connected to 100
or 240 V. Power control is carried out electronically
on the power supply board.
Installing the Fuses
For safety reasons, your 402 is delivered without
the fuses installed. You must install two 1A type
“T” slow blow fuses (reference 6730104006), as
follows:
1) Disconnect the power lead from the instrument.
2) Use a small screwdriver to pry open the fuse
holder drawer.
3) Pull the drawer gently towards you, to open the
fuse receptacle.
4) Push the fuses into position.
5) Push the fuse holder back into the sector block.
In the figure, the drawer containing the fuses is
shown separated from the sector block. In fact the
drawer hinges downwards; it is not advisable, nor
necessary, to remove it completely from the block.
ON/OFF switch
Fuse holder