© Caleffi_20130925_iSolar_WMZ.mon
us.ind
d
| 4
accessory
refractometer set
For determining the concentration of glycol in the heat transfer medium
280 009 60
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.
attention!
When the iSolar WMZ is connected to a control-
ler, the VBus
®
master board has to be replaced
with the VBus
®
slave board!
When several iSolar WMZ are cascaded and
connected to a datalogger or PC (see p. 10), only
the VBus
®
master boards of the iSolar WMZs with
the subaddress 1 or higher have to be replaced
with the VBus
®
slave boards!
Warning
Switch off power supply and disconnect from
power supply before opening the housing!
VBus
®
board
1
2
3
Electrostatic discharge can lead to damage of
electronic components!
