Teledyne 7500ZA operating instructions Block Cell Removal see FIG

Maintenance Model 7500ZA

7.4.1.2BLOCK CELL REMOVAL (SEE FIG. 7-2)

For steps 1 to 4, see 7.4.1.1, Pipe Cell Removal.

5.Disconnect and remove detector output cables from detector output circuit board (No.12). Applying identification mark on top of removed cable connector will ensure proper pin assignment later.

6.Unscrew the two screws (No. 10) that hold the detector to the light source unit to remove the detector from the measuring unit. The block cell can be removed together with the detector.

7.To remove the block cell, unscrew the two screws (No. 6) holding the block cell to the detector. The infrared transmission window (No. 8) is just sandwiched (not fixed) between the detector and block cell. Keep the detector facing up, when removing this window.

8.For assembly, reverse the disassembly procedures.

Note: The O-ring (No. 9) is placed between the window holder and block cell. Use care in positioning the O-ring. With a two-component analyzer, install the two-component detector last. Make sure that no space is left between the one-component and two-component detectors. When inserting the detector output cable connector into the PCB board, be careful to attach the connector with proper pin assignment (top/bottom).

Teledyne Analytical Instruments 80