caron 7310-22, Operation Manual

Page: 74 / 131

7310 Series Operations Manual REV E 11-19-19 Page 74 of 131
Re-attach the chart “hub” knob and fasten securely against the chart. Press and hold
the “change chart” button (#3) again for approximately one second until the pen begins
to move back onto the chart and then release the button. Check to make sure that the
pen is marking on the chart paper. If it is not, then carefully adjust the pen arm to
establish contact with the paper.
Chart recorder marking system:
This type of pen consists of a self-contained ink reservoir with a porous plastic stylus
which is snapped around the outer edge of the metal pen arm. A pen cap is provided to
extend the life of the ink pen during shipping or when the recording unit is not in
service. To remove the pen cap, gently lift the pen arm away from the chart paper.
Remove the black plastic pen cap to expose the fiber tip of the ink pen and gently place
the pen back onto the chart paper. Do not let the pen arm "snap" back onto the chart
paper. This will flatten the fiber tip of the pen and will no longer give you a fine line
marking on the chart paper. Place the pen cap in a safe place for future use. If the stylus
does not touch the chart, adjustment can be made by slightly bending the metal pen arm
in the center towards the chart paper. Do not use more pressure than is necessary to
create a fine line marking on the chart paper. As the pen ink supply runs out, the pen
color will become lighter. This indicates that the pen should be replaced.