Hach 9525sc Bedienungsanleitung Seite 23

Figure 13 Electrical wiring diagram
2
1 0.33 mm (22 AWG) yellow temperature controller
wire
2
2 3.31 mm (12 AWG) (US) or 2.08 mm
(EU) red neutral (N) power connection wire
2
3 3.31 mm (12 AWG) (US) or 2.08 mm
(EU) red SSR-1 power terminal wire
4 Zip ties
5 Electrical enclosure
1. Prepare for the maintenance procedure. Refer to the steps in
2. Open the electrical enclosure. Refer to the steps in
3. Carefully cut the zip ties that hold the four heater wires in the electrical enclosure. Refer to
Figure 13.
4. Disconnect the two red 3.31 mm
SSR-1 power terminal and the neutral (N) power connection. Refer to
5. Disconnect the red and yellow 0.33 mm
to Figure 13.
6. Loosen the two screws that attach the heat shield to the unit. Refer to
7. Carefully lift the heat shield off the unit. Refer to
8. Remove the four screws from the bottom of the heater. Remove the bottom heater cover. Refer to
Figure 14.
9. Remove the electrical retainer nut in the heater housing. Refer to
10. Loosen the screw and remove the ground (green) wire in the heater housing. Refer to
6 Ground (green) wire
2
(14 AWG) 7 Heater unit
2
(14 AWG) 8 Ferrite collars (used with the 220 volt unit only)
9 0.33 mm
Open the electrical enclosure
2
(12 AWG) (US) or 2.08 mm
2
(22 AWG) wires from the temperature controller. Refer
Figure
2
(22 AWG) red temperature controller wire
Prepare for storage
2
(14 AWG) (EU) wires from the
Figure
Figure
14.
Figure 14.
on page 19.
on page 20.
13.
14.
Figure 13.
English 23