NOTICE:
• Either thermal contacts or thermistors are incorporated in the pump.
• Thermal contacts must never be exposed to voltages higher than 250 V, breaking
current maximum 4 A. It is recommended that they are connected to 24 V over
separate fuses to protect other automatic equipment.
1. If thermal contacts are included in the pump installation, connect the T1 and T2 control
conductors to the MiniCAS II monitoring equipment.
NOTICE:
Ex-approved products must always have the thermal contacts connected irrespective
of the ambient temperature.
2. If thermistors are included in the pump installation, and screened or auxiliary cable is
used, then connect T1(1) and T2(2) to thermistor relay or MAS 711, and T3(3) and T4
(4) to MiniCAS II or MAS 711.
3. Connect the mains leads (L1, L2, L3, and earth [ground]) to the starter equipment.
For information about the phase sequence and the color codes of the leads, see Cable
charts (page 25).
4. Ensure that the warning label is attached to the cable end. In case the label is missing,
attach the spare label to the cable end.
The label is delivered with the pump.
5. Check the functionality of the monitoring equipment:
a) Check that the signals and the tripping function work properly.
b) Check that the relays, lamps, fuses, and connections are intact.
Replace any defective equipment.
Cable charts
Description
This topic contains general connection information. It also provides cable charts that show
connection alternatives for use with different cables and power supply.
Installation
Flygt 3153 Installation, Operation, and Maintenance Manual 25
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