Caron 7000-75 - Manual (Page 30)

7000-50 & 7000-75 Series Operations Manual Rev A 1/6/2014 Page 30 of 71
Operation of Front Mounted 6” Recorders (RCDR316, RCDR317)
Built in 6” ink pen temperature and or humidity recorders can be purchased with
CARON chambers. The recorders are shipped installed on the outer door of the
chamber from the factory and require no installation.
Changing the chart paper:
Press and hold the “change chart” button on the recorder (#3) for approximately one
second until the pen begins to move to the left of the chart and then release the button.
Wait until the pen has completely moved off of the chart. To remove the chart paper,
unscrew (counter-clockwise) the chart “hub” knob at the center of the chart. Remove
the old chart paper and position the new one so that the correct line coincides with the
time line groove on the chart plate.
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.
Replacement of the Pen:
Recorders that are equipped with fiber tipped cartridge pens will have a cartridge that
is color coded "red" to designate pen number one and an optional cartridge that is color
coded "blue" to designate pen number two. The pen cartridge is securely fastened