ITT Flygt 3102, Инструкции по обслуживанию и ремонту

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2. Check the data plate to see which connections are required for the power supply:
• Y
• D
• Y serial
• Y parallel
• Y/D
3. Arrange the connections on the terminal board/closed end splices in accordance with the required
power supply.
4. Connect the motor conductors (U1, V1, W1, and earth (ground)) according to applicable cable chart.
The earth (ground) conductor must be 50 mm ( 2.0 in.) longer than the phase conductors in the
junction box of the unit.
5. Make sure that the pump is correctly connected to earth (ground).
6. Make sure that any thermal contacts incorporated in the pump are properly connected to the terminal
block/closed end splices.
7. Install the entrance cover and the O-ring on the stator housing.
8. Fasten the screws on the entrance flange so that the cable insertion assembly bottoms out.
Connect the motor cable to the starter and monitoring equipment
WARNING:
Do not install the starter equipment in an explosive zone or in the sump.
NOTICE:
• Thermal contacts 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.
The single phase pumps must be equipped with a starter which has start and run capacitors.
A specially Flygt designed starter is required for the operation of single phase pumps. The connection of
the motor cable to the starter is shown in the wiring diagram.
1. If thermal contacts are included in the pump installation, connect the T1 and T2 control conductors
to the monitoring equipment.
Do not connect the T1 and T2 leads to thermal contacts if the temperature of the pumped liquid is
above 40°C (104°F).
NOTICE:
Ex-approved products must always have the thermal contacts connected irrespective of the ambient
temperature.
2. 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
15).
3. 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.
Installation (Continued)
14 Flygt 3102 Service and Repair Instructions