User Manual
Power modules for heating and cooling meters
PolluTherm / PolluStat E / PolluFlow
3. Retrofitting or replacement of a power module
3.1. Opening of the calculator housing
Remove the lower user seal from the housing
Calculator housing 1: Open the housing cover by opening the black housing latch
Calculator housing 2: Open housing by pressing both closing clips at the two bottom corners
3.2. Removal of battery and insert of power module
Calculator housing 2:
PolluStat E, PolluFlow: before the supply battery is removed the calculator module has to be
dismantled from the calculator. Unscrew only the screw from the plastic cover on the right side under
the KK1 seal (user seal) (picture 3). Pull out the calculator module. The seals in the middle and on
the left side may not be removed (invalidation of metrological sealing)!
PolluStat E, PolluFlow: plug on the back-up battery AA 3,6V (68504900) to the backside of the
calculator module (picture 4) (JST plug). The battery is required for date back-up and short-term
emergency operation in power failures. In the PolluTherm the back-up battery is soldered-on to the
circuit board as standard
Calculator housing 1 and 2:
Either unplug the battery connection plug and remove the battery from its position or remove the
shorting plug (only used with Pollutherm, Type Pt500)
For disposal note safety instructions, point 2
3.3. Installation of power supply unit
Plug the connection plug of the power module in the socket and insert the power module in the
designated recess of the housing. The connection plug is polarized so inversion of the plug is not
possible.
In order to connect cables a spare rubber moulding has to be removed from the calculator housing 2.
Route the cable through the rubber moulding and make a pull relief with the provided cable clip. With
calculator housing 1 the cable has to be routed through the cable clamps and fixed
Please ensure that the cable of the connection plug is not pinched by the calculator cover
Close the calculator lid and seal with the provided self lock seal
For detection of the power module it is necessary that the device is connected to the power system
for at least one minute
Through a connector encoding the M-Bus credit automatically turns off when a power supply unit is
installed
Connection plug
battery / power module
Power
module
Battery:
Here: C-Cell
Or (alternatively only
with PolluTherm; Pt
500) pull out shorting
plug
Picture 1: inside view with battery, calculator housing 2 Picture 2: inside view with power module, calculator housing 2
M H 6122 INT, page 2
