CAUTION!
Material damage possible due to power surges
Should the pump be connected to the mains power supply in
parallel to inductive consumers (such as solenoid valves,
motors), inductive power surges can damage the controller
when it is switched off.
– Provide the pump with its own contacts and supply with
voltage via a contactor relay or relay.
Personnel:
n
Electrician
Install the pump in line with best working practice and in accordance
with the operating instructions and applicable regulations.
9.1
Supply voltage connector
WARNING!
Unexpected startup is possible
As soon as the pump is connected to the mains, the pump
may start pumping and consequently feed chemical may
escape.
– Prevent dangerous feed chemicals from escaping.
–
If you have not successfully prevented this, immediately
press the
[STOP/START]
key or disconnect the pump
from mains, e.g. via an emergency cu-off switch.
CAUTION!
If the pump is integrated into a system: Design the system so
that potential hazardous situations are avoided by pumps
starting up automatically subsequent to unintended power
interruptions.
Connect the pump to the mains/power supply using the mains cable.
Should the pump be connected to the mains in parallel to inductive con‐
sumers (e.g. solenoid valves, motor), the pump must be electrically iso‐
lated when these consumers are switched off.
n Supply the pumps with voltage via a contactor relay or relay using
separate contacts for the pump.
n If this is not possible then connect a varistor (part no. 710912) or an
RC member, 0.22 µF / 220 Ω in parallel.
Product Part no.
Varistor: 710912
RC Gate, 0.22 µF / 220 Ω: 710802
Parallel connection to inductive con‐
sumers
Interference suppression aids
Electrical installation
32
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