Hach-Lange SURFACE SCATTER 7 sc Turbidimeter - Manual (Page 46)

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Maintenance
6.4.3 Detector assembly replacement
The detector assembly, listed as a replacement item in section 8.1
on page 51 , is a sealed unit that is replaced entirely ( Figure 20 ).
1. Write down the controller setup for all analog outputs and/or
relays used with the SS7 sc.
2. Turn off the controller and disconnect it from power.
3. Disconnect the detector cable from the controller. Unscrew the
nut ( Figure 20 , item 8 ) and remove it from the disconnected
detector cable.
4. Open the SS7 sc enclosure door. Using a blunt object (¼-inch
diameter or less, e. g. the blunt end of a pen) push on the
bushing from the inside of the enclosure until it is free of the
strain relief and clamping fingers. Remove the grommet from
the detector cable.
5. Pull the detector cable through the strain relief. Open the cable
clamps ( Figure 20 , item 3 ) and remove the cable.
Figure 19 Light source assembly
1 Shield assembly (Cat. No. 45299-00) 10 Spacer, light source (Cat. No. 45039-00)
2 Wavy washer (2x) (Cat. No. 45042-00) 11 Gasket (Cat. No. 45033-00)
3 Medium aperture (Cat. No. 45044-00) 12 End plate (Cat. No. 45032-00)
4 Large aperture (Cat. No. 45045-00) 13 Body (Cat. No. 45027-00)
5 Retaining ring (Cat. No. 45041-00) 14 Large spacer (Cat. No. 45037-00)
6 Lens holder (Cat. No. 45040-00) 15 Small lens (Cat. No. 31465-00)
7 Small aperture (Cat. No. 45043-00) 16 Small spacer (4x) (Cat. No. 45038-00)
8 Large lens (2x) (Cat. No. 44114-00) 17 Screws (8x) (Cat. No. 5584-11)
9 Medium spacer (Cat. No. 45036-00)