Photometer Lamp Voltage Adjustment - Thermo Scientific 49i Instruction Manual

Servicing

Photometer Lamp Voltage Adjustment

Photometer Lamp
Voltage Adjustment
7-28 Model 49i Instruction Manual
5. Loosen the Allen screw on the lamp clamp.
6. Loosen the two screws holding the clamp to the optical bench.
7. Carefully slide the lamp out of the bench and instrument case through
the access hole.
8. Carefully slide new lamp into place until it bottoms. Loosely tighten the
Allen screw on the clamp. Tighten two screws holding clamp to optical
bench. Pull lamp out approximately 1/32-inch to 1/16-inch to allow for
expansion when the lamp warms up. Tighten the Allen screw on the
clamp.
9. Plug the new photometer lamp cable into the LAMP connector on the
photometer board.
10. Slide the insulation back on the end of the lamp.
11. Replace access hole cover and secure with the two retaining screws.
12. Re-install the instrument cover.
13. Reconnect power and turn instrument ON.
14. After lamp has stabilized (approximately 15 minutes), refer to the
"Photometer Lamp Voltage Adjustment" procedure that follows to
adjust the photometer lamp voltage.
Use the following procedure to adjust the photometer lamp voltage until the
output from each detector is approximately 100 kHz.
Note After turning power ON, wait for the lamp to stabilize (approximately
15 minutes) before beginning the following lamp voltage adjustment
procedure.
Thermo Fisher Scientific