TM 10-8145-222-23
0055
REPLACE CONTINUED
30. Green and red pens begin moving towards left outside area of chart.
31. When both pens have stopped above outer ring, unscrew chart hub knob from center of chart.
32. Install new chart paper over center hub.
33. Position chart paper so that correct time line coincides with time line groove on chart plate.
34. Perform Temperature Chart Recorder Service per TM 10-8415-222-10 to set alarm and calibrate pens.
Change Cartridge Pen Arm
Change either cartridge pen arm as follows:
NOTE
Each time the chart paper or fiber tip pen cartridge is changed, make sure that each
pen stops at the current temperature of the chart paper. Otherwise, this pen offset
can cause the unit to record an incorrect temperature on the chart.
If replacing green cartridge pen arm, it will be necessary to remove the red cartridge
pen first in order to gain access to green pen arm screws. Both pen arms are
removed the same way.
1. Open chart recorder door (Figure 6, Item 1).
2. Loosen two screws (Figure 6, Item 2) securing metal pen arm (Figure 6, Item 3) and carefully remove pen arm.
Figure 6. Cartridge Pen Arm Removal.
