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Installation
7.2 Installation, electrical
General safety notes
What requires electrical installation?
7.2.1 Control connectors
Pacing relay (option)
22
WARNING!
Danger of electric shock
Unprofessional installation may lead to electric shocks.
–
Cable end sleeves must be crimped onto all cut-to-
length cable conductors.
–
Only technically trained personnel are authorised to
undertake the electrical installation of the device.
What requires electrical installation?
Level switch
n
Dosing monitor (option)
n
Relay (option)
n
External control (option)
n
mA output (option)
n
Bus connector (option)
n
Timer (option)
n
Pump, power supply
n
CAUTION!
Incoming signals can remain without effect
If the universal control wire, the external/pacing cable or the
level monitoring cable is shortened below 1.20 m, the pump
does not detect that it is connected. Consequently a warning
message (for example) can be suppressed.
–
Do not shorten this cable below 1.20 m.
1.
Install the cable which originates from the pacing relay - see the
figure in the chapter entitled "Overview of equipment and control
elements": Cable A, left.
The cable polarity is unimportant.
2.
Install the power supply cable to the pacing relay PCB - see the
figure in the chapter entitled "Overview of equipment and control
elements": Cable B, right.
CAUTION!
Warning of overload
If the current through the relay becomes too high, both
it and the pump could be destroyed by overheating.
–
Fit a circuit breaker.
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