ITT Flygt 5150.350, Installation, Operation And Maintenance Manual

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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.
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
20).
4. 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
1 2 3 4 5 6 7
1 2 L1 L2 L3 GC
U1 W2 V1 U2 T16 T15 T2 T1 W1 V2
1
2
3
6
5
4
7
1. Control leads
2. Starter equipment
3. Mains leads
4. Motor cable
5. Terminal blocks on pump
6. Stator leads
7. Control cable
Figure 7: Connection locations
L2
L1 L2 L3
L3 L1
Figure 8: Phase sequence
Colors and marking of the mains leads
Mains SUBCAB 7GX SUBCAB 4GX SUBCAB AWG SUBCAB
(screened)
L1 Black 1 Brown Red Brown
L2 Black 2 Black Black Black
L3 Black 3 Grey White Grey
L1 Black 4 - - -
Installation (Continued)
20 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual