5.35
11. Lift out the complete transducer inner box assembly.
To change the thermal fuse (1132 transducer only):
a) The thermal fuse is located on top of the inner box assembly. Remove the two
wire connections from the thermal fuse assembly.
b) Undo fixing screw and remove the complete thermal fuse assembly.
c) Install a new thermal fuse assembly (01131355) by screwing it to the top of the
inner box and reconnecting the two wires (push-on-fitting).
12. Unsolder the heater wires using a high temperature (e.g. 430°C) soldering iron with a fine
bit.
13. Unscrew the faulty heater(s). (Supadriv No.7).
14. Fit the replacement heaters and re-solder the wires using high melting point solder
(approx 300°C).
15. Refit the inner box assembly feeding the wires carefully through the outer case and screw
the hexagon spacer (34) into position.
16. Stick the top sealing plate back to the case of the analyser.
17. Push the ‘O’ rings (18) over the sample pipes and refit the bottom sealing plate, nuts and
washers.
18. Refit the insulation and front cover.
19. Feed the wires carefully into the control or interface unit and refit the transducer to the
mounting bars.
20. Refit the lock nuts (33), tighten carefully and reconnect the wires to the terminal blocks
as shown in Figure 5.5.
21. Leak test (see Section 5.3.4) and recalibrate the analyser
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