Setup and connection
5.6
Electrical connection
DANGER
Risk of electrocution!
All electrical work must be carried out only by quali
¿
ed elec-
tricians.
Before all work on the electrical system, disconnect the
motor from the mains and secure against being switched
back on again.
5.6.1
Connecting the motor
Follow the instructions of the motor manufacturer.
1. Connect the motor according to the connection diagram.
2. Make sure no danger arises due to electric power.
3. Install an EMERGENCY STOP switch.
5.6.2
Connecting the thermistor
2TP1
2TP2
2TP1
2TP2
Connect the PTC thermistor to the motor protector.
–
Activation temperature 155°C
–
Test voltage 2.5 V
5.6.3
Check direction of rotation
DANGER
Danger to life from rotating parts.
Use personal protective equipment when carrying out any
work on the pump.
Maintain an adequate distance from rotating parts.
1. Switch on motor for max. 2 seconds and switch it off again
immediately.
2. Check whether the sense of rotation of the motor matches
the direction of rotation on the fan impeller.
3. If the sense of rotation is different: Change over any two
phases.
5.7
Performing the hydrostatic test
Only necessary if the entire system needs to be tested
under pressure.
NOTE
Material damage due to bursting of pump casing.
Testing pressure must not exceed the permissible pump
pressure (
ĺ
documents for the particular order).
Make sure the testing pressure does not exceed the per-
missible pump pressure.
–
If necessary, do not perform pressure test on the pump.
301 356
BA-2018.01.25 EN
ETLB-S, ETLB-ST
15
