Xylem YSI Alyza IQ NH4, Руководство по эксплуатации

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Commissioning Alyza IQ NH4
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Closing the power
supply box
18 Slide the nut of the cable gland (of the power supply box) over the cable
of the heat tracing.
19 First run the wire with the greatest diameter (protective earth conductor,
yellow/green) through the sealing of the cable gland.
20 Then run the two thinner wires (black) of the heat tracing through the
sealing of the cable gland.
21 Push the entire cable with the cable sheath through the sealing until the
cable is visible in the power supply box.
22 Insert the cables of the heat tracing lines for the intake lines and return
lines through the cable glands on the underside.
23 Seal unused cable glands with the black plugs supplied.
Thus the power supply box is closed and protected against dust and
moisture.
24 Screw tight the nut of the cable gland (with a torque of 7.5 Nm).
25 Insert all heat tracing cables into the power supply box.
26 Insert the heat tracing wires into the respective terminals so that each
terminal catches.
Green/yellow cable: any green/yellow terminal
1st black cable: any blue terminal
2nd black cable: any gray terminal
The heating bands of the heat tracing must start within the housing
of the Alyza IQ to keep the lines frost free. At the outlet of the return
line, the heat tracing must protrude 20 to 50 mm from the sleeve
tube. If necessary, shift the heat tracing in the sleeve tube accord-
ingly.
27 If necessary, replace the power cable with another power cable (e.g. a
longer one).
28 Check whether all connections are made correctly.
29 Screw tight the nut of the cable gland of the power cable (with a torque
of 2.5 Nm).
Make sure that no cable touches the power supply filter.
30 Remount the lid of the power supply box and screw tight all nuts with
safety disks as far as they will go (0.4 Nm).