IM-P402-93 AB Issue 7
7
4. Setting the voltage
To change the voltage:
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Disconnect the mains supply.
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Unplug the two connector sockets from the back of the unit.
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Remove the four back panel screws and the panel itself.
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Slide out the PCB. The two-way mains switch is fitted on the PCB next to the transformer
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Select the required working voltage, (shown on the switch slider).
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Refit the PCB, making sure that the two 10-way plugs engage with the sockets on the
display PCB.
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Refit the back panel.
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Refit the two connector sockets.
Fuse
The fuse is next to the mains switch, as shown.
Fuse type
The controller is fitted with an internal 20 mm cartridge, 100 mA anti-surge (T) fuse. For the UL
version, replacement fuses must be UL recognised to maintain the integrity of the approval.
The controller is supplied with the voltage switch set to 230 V.
The controller is suitable for operation at the following voltages (50 - 60 Hz):-
230 V setting
198 V - 264 Vac
115 V setting
99 V - 132 Vac
Fuse type
20 mm cartridge
Fuse rating
100 mA anti-surge (T)
Maximum power consumption
6 VA
Overvoltage category
II
Transformer
Slide switch up
for 115 V supply
20 mm fuse
100 mA anti-surge
230
Fig. 5
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