CM4 Four-Point Continuous Monitor
CM4 Technical Manual
9-4
7. On older model CM4’s, release carrier retaining tab by pressing
towards rear of unit.
8. Remove the carrier by placing your hands under it, palms
up, and firmly lifting straight up. Apply sufficient upward force
to free tape guides from posts. See
.
NOTE:
To avoid carrier torque and damage, do not tilt the carrier. Contact
Honeywell Analytics if you are unable to remove the carrier.
Right
Wrong
Figure 9-1: Removing the Carrier
9.2.2 Verify Optics
Each time you replace a Chemcassette
®
tape, verify that the CM4
optics system is operating properly using the optics verify function and
the optics verification card supplied with your instrument. The CM4
compares the nominal span values stored in the instrument’s memory
to the values produced by the optics verification card. This procedure
verifies that the optics system correctly quantifies gas levels during
normal operation.
Instructions
1. Press PROGRAM to exit Monitor Mode.
2. From the 1–CALIBRATION MODE, choose the subfunction
1–OPTICS VERIFY.
1 – CALIBRATION MODE
1 – OPTICS VERIFY
3. Press ENTER.
The display reads:
INSERT STAIN 1 PRESS
4. Open the tape load lever and carefully remove carrier (See
Figure 9-1).
5. Insert the verification card into the detector head with Stain
1 facing the front of the CM4. Make sure that Stain 1 is fully
inserted into the detector head.
6. Carefully close the tape load lever.
7. Press CURSOR ARROW RIGHT on the numeric keypad. The
readings for Stain 1 are stored. The display reads:
INSERT STAIN 2 PRESS
8. Open the tape load lever.
9. Remove the verification card.
10. Turn the card and fully insert Stain 2.
11. Carefully close the tape load lever.
12. Press CURSOR ARROW RIGHT.
The display shows one of two messages:
VERIFY SUCCESSFUL
or
F24 OPTICS FAIL 1, 2, 3, 4
13. Open the tape load lever and remove the verification card.
NOTE:
If the optics verification is not successful, repeat the procedure.
Contact Honeywell Analytics if the instrument prints and displays
the error message after a second optics verification attempt.
14. Reinstall the carrier and close the tape load lever.
Press any key to return to the Calibration main menu.
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