Pahlen MiniMaster User Manual page 13

MiniMaster
7. Installation, electrics
Electrical installation must always be carried out by a an authorized electrician.
Pipe installation must be complete before electrical installation is started.
Pahlén recommends a fixed installation with a 2-pole working breaker.
Loosen the cover's four screws. The control unit cover can easily be hooked into open position to facilitate the installation work.
NOTE: Ensure that the band cable from the circuit board to the cover is not pinched.
Hook on the cover according to picture 5. Connect the power cable and any dosing equipment as indicated in the diagram below.
The multi-pole contacts to the circuit board can be uninstalled for access to screw plinths for the respective cable connection.
Circuit board - control unit Chlorine and/or pH
Display panel
Red
Black
GND
Red
Black
Connection of flow
signal between
circuit boards
(416620-X only).
Picture 5
pH
PB100
BNC
Dosage
equipment
1~230V AC
Dosage
equipment
max 5V DC
Signal (OC+)
±0V (OC–)
L1
N
RN
R +
R –
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ENGLISH
AC IN
Main current connection to the unit.
Relay connection
Connection of dosing equipment, 230 VAC,
NOT potential free. Max 1A
R+: Phase (for dosing chlorine and
pH-elevating agent).
R-: Phase (for dosing pH-reducing agent).
RN: Zero/Neutral (common for dosing).
OC+/OC-:
Transistor "open collector" output for
dosing equipment, max 5V.
pH/Chlorine:
Connector for electrode connection.
GND:
Ground socket connection
(Chlorine measurement only).
Carefully hook the cover on
the circuit board's edge.