Step 20. Grasp drawer handle and pull out drawer (25) to its
full extent. Lift drawer cover (26), (Figure 5-26).
NOTE
It will not be necessary to perform Step 21 unless
operating the reader under reduced lighting conditions.
Step 21. Adjust LAMP control until drawer lamp (27), (Figure 5-
26), illumination is satisfactory.
Step 22. Ensure drawer (25) does not contain any dosimeter or
other objects on the dosimeter dictating plate (28),
(Figure 5-26).
WARNING
Personal injury may result from failure to close the drawer
assembly properly. Close the drawer assembly by grasping
the drawer handle firmly with one hand, lowering the drawer
cover, if necessary, and pushing drawer into the closed
position. The free hand should remain clear of the drawer
assembly. Care should be taken to avoid contacting the
transit lock with either hand.
Step 23. Lower drawer cover (26) and close drawer (25), (Figure
5-26).
b. Reader Adjustment.
In making adjustments to the reader, use the following steps:
Step 1.
Set selector switch (20) on the front panel to
NEUTRON CAL 0 position.
Step 2.
Press and release DEPRESS FOR READING switch (21) on
front panel and observe reading on DPM (22), (Figure
5-26).
(1) If reading is 0 + 2 cGy, proceed to Step 3.
(2) If reading is not + 2 cGy, use key on carrying case
or screwdriver to adjust NEUTRON CAL 0 control (29) until the DPM
reading is ZERO (000). Turn control clockwise if reading is too
low or counterclockwise if reading is too high, (Figure 5-26).
Step 3.
Set selector switch (20) to NEUTRON CAL 800 position,
(Figure 5-26).
5-29
IS0345
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