Helmer iPF125 - Page 9

Helmer Scientic i.Series
®
and Horizon Series
™
Freezer - Upright Operation Manual
360369/A 8
Install / Replace Chart Paper
Note
For accurate temperature reading, ensure the current time is aligned with the time line groove when the chart knob
is fully tightened.
Chart recorder stylus and time line groove
1. Press and hold C button. When stylus begins to move left, release button. The LED ashes.
2. When stylus stops moving, remove chart knob then move knob up and away.
3. Place chart paper on chart recorder.
4. Gently lift stylus and rotate paper so current time line corresponds to time line groove.
5. Hold chart paper in place while making sure the chart knob is fully tightened. (Failure to fully tighten the knob can result in paper
slipping and losing time.)
6. Press and hold C button. When stylus begins to move right, release button.
7. Conrm stylus is marking on paper and stops at the correct temperature.
8. Calibrate chart recorder to match primary temperature if needed and close recorder door.
Power Supply
The temperature chart recorder uses AC power when the system is operating. If AC power fails, the recorder continues to record
temperature with back-up power provided by the nine-volt battery.
♦ The LED indicator glows green continually when main power is functioning and the battery is charged.
♦ The LED indicator glows red continually when main power is functioning and the battery is either not installed or needs to be
changed.
♦ The LED indicator ashes red to indicate that the recorder is receiving power only from the back-up battery.
♦ The LED indicator ashes during chart paper change mode.