Vaisala MMT330 - Manual (Page 51)

Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 49
Installation
1. Disconnect the power and open the transmitter cover.
2. Remove the protective plug from the cable gland and thread the
wires. In case the power supply module is installed in the factory,
continue with the step 5.
3. To attach the module fasten the power module to the bottom of the
housing with four screws. See the position in Figure 2 on page 21.
4. Connect the wires from the terminals of the power supply module
marked with + and - to the terminals POWER 10... 35 V 24V on
the motherboard of the transmitter.
5. Connect the AC mains voltage wires to the power supply module
terminals marked with N and L.
6. Attach the grounding wire to the grounding terminal on the right-
hand side of the transmitter.
7. Connect the power. The LED on the cover of the transmitter is lit
continuously during normal operation.
WARNING Do not detach the power supply module from the transmitter when the
power is on.
WARNING Do not connect the mains power to power supply module when it is not
installed in the transmitter.
WARNING Always connect protective ground terminal.