Resol WMZ Manual page 4

WMZ
VBus board
Electrostatic discharge can lead to damages of
electronic components!
1
4
|
Accessory
RESOL refractometer set
For determining the concentration of glycol in the heat transfer medium
2
3
Attention!
When the WMZ is connected to a controller, the VBus
master board has to be replaced with the VBus slave
board!
When several WMZ are cascaded and connected to a data-
logger or PC (see p. 10), only the VBus master boards of the
WMZs with the subaddress 1 or higher have to be replaced
with the VBus slave boards!
Warning
Switch-off power supply and disconnect from mains before
opening the housing!
1 Unscrew the cross-head screw of the cover and re-
move the cover from the housing.
2 Unscrew the two lateral srews of the transparent shield
and remove the shield.
3 Pull out the board which has to be replaced carefully.
Replace with new board.
Carry out assembly in reverse order.
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