Vaisala MHT410 Guía Rápida página 22

1 English
5. a. Start opening the valve very carefully to let air out through the bleed
screw.
b. When oil flows out, close the bleed screw. Clean the area with a cloth
and open the ball valve fully.
6. If needed, continue tightening the mounting nut until the connection is oil-
tight.
7. Push the probe to correct depth according to installation location. When the
probe is in the correct depth, turn the transmitter 90 degrees two to three
times to remove any air bubbles from the sensor area.
Valve in Radiator Pipe
Moisture and temperature sensors
o
are directly in the oil flow.
Hydrogen sensor is in the valve area.
o
8. Tighten the small tightening nut with a wrench until it the probe is securely
fastened.
8
If you open the valve too quickly, the air inside the
mounting nut will flow into the transformer instead.
Valve in Transformer Wall
Tip of the probe is level with transformer
inner wall. No part of the probe must
enter the transformer chamber. All
sensors remain within the valve area.
Severe risk of death and of
damage to transformer:
Pay attention to transmitter
installation depth and possible
energized parts inside the power
transformer to minimize electric
shock hazard and equipment
damage.