Vaisala PTB330 - Manual (Page 35)

Chapter 3 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 33
Installation
To install the AC power supply module:
1. Disconnect the power and open the barometer cover.
2. Remove the protective plug from the cable gland and thread the
wires. If 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 of the power
supply module in Figure 15 on page 25.
4. Connect the wires from the terminals of the power supply
module marked with + and - to the terminals POWER 10 ... 35
V on the motherboard of the barometer.
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 barometer.
7. Connect the power. The LED on the cover of the barometer is lit
continuously during normal operation.
WARNING Do not detach the power supply module from the barometer when the
power is on.
WARNING Do not connect the mains power to power supply module when it is
not installed in the barometer.
WARNING Always connect protective ground terminal.