4220 Flow Meter

Section 6 Maintenance and Service

6.Remove the feed spool by pulling on the handle extending from the right side of the printer.

7.Snap off the other white end cap as described previously. Save the white end caps; you will reuse them.

8.Remove the empty roll from the spool by holding the han- dle in one hand and pulling the roll from the spool with the other.

To install the new chart paper:

After you remove the empty roll,

1.Slide the new roll onto the feed spool so it unrolls from the back side - facing away from you.

2.Line up the slots in the cardboard tube with the raised guides on the spool.

3.Reattach the white end cap by wedging the two catches on the end of the spool into the two slots on the white end cap.

4.Peel the paper back gently so it will unroll freely. Using the knife or scissors, cut off the end of the roll if it is torn.

5.Fold the paper over on itself so the end is straight and stiffer than a single layer of paper would be.

6.Unroll a few inches of the paper and set the roll on top of the cabinet.

7.Use your fingers to feed the paper down the back of the internal printer to where it touches the roller. Make sure the paper gets past the lever for the paper sensing switch.

8.Press the Chart Advance key and hold it until the paper comes through the printer mechanism.

9.When the paper comes through, reinstall the feed spool with the new roll on it by snapping it into the printer assembly.

10.Run a few inches through the printer, using the Chart Advance key; then unfold the end.

11.Put the cardboard tube from the empty roll on the take-up spindle and reattach the white end cap by wedging the catches on the end of the spool into the two slots on the white end cap.

12.Use the piece of tape to attach the end of the new paper to the cardboard tube from the old roll.

13.Roll some of the paper onto the spool so that it will wind clockwise, facing away from you. Then reinstall the take-up roll into the top of the printer.

14.Be careful to push it all the way back in, so that the take-up gear on the end of the spool assembly will reen- gage.

15.When the take-up spool is back in place, push the Paper Reroll key; this will remove any slackness in the paper.

6-8

Page 142
Image 142
Teledyne 4220 installation and operation guide To install the new chart paper