Laser Maintenance; Field Calibration Check; Troubleshooting - DeWalt DW030 Instruction Manual

5. Aim the LDM at the third desired target and press the
DIST (ON) button (E) once to record the third distance.
6. The calculated volume is displayed in the main reading line (S).
The third measurement is displayed in the additional reading
line (P).
NOTE: The final measurement is displayed as cubic feet or
cubic meters.

LASER MAINTENANCE

• Under some conditions, the lens of
the laser emitter and the receiver
may collect some dirt or debris. This
will affect beam quality and operating
range. The lens should be cleaned
with a cotton swab moistened with
water as shown in Figure 9.
WARNING: DO NOT turn the LDM on while cleaning the
lens. Serious eye injury may result from staring at the beam.
• The housing can be cleaned with a wet lint-free cloth such as
a cotton cloth. USE WATER ONLY — DO NOT use cleansers
or solvents. Allow the LDM to air dry before storing.
• To maintain the accuracy of your readings, perform control
measurements periodically. Refer to Field Calibration
Check.
• If your LDM requires repair, contact your local D
center.
• When the LDM is not in use, store it in the pouch provided.
• Do not store your LDM in the pouch if it is wet. Dry exterior parts
with a soft, dry cloth and allow the LDM to air dry.
• Do not store your LDM at temperatures below 20˚F (–7˚C) or
above 160˚F (70˚C).
CAUTION: Never use solvents or other harsh chemicals for
cleaning the non-metallic parts of the laser. These chemicals may
weaken the materials used in these parts. Use a cloth dampened
only with water and mild soap. Never let any liquid get inside the
unit; never immerse any part of the unit into a liquid. Never use
compressed air to clean the laser.

Field Calibration Check

Measure a known distance [within a 10–30' (3–10 m) range] with
the LDM to confirm that the LDM is functioning properly.

Troubleshooting

FIG. 9
If measurement conditions do not permit an accurate measurement,
an error code will appear on the LCD display. For an error code
description refer to the following table.
WALT service
E
7
Code Description
204 Calculation error
252 LDM too hot
253 LDM too cold
255 Weak signal
surface (e.g., put white paper
256 Incorrect reading
257 Too much
background light
258 Outside of range Stay within the working range
260 Laser beam
interrupted
Correction
Repeat the measurement
Let the LDM cool down
Warm the LDM up
Change the target
on glass door)
Change the target
surface (e.g., put white
paper on glass door)
Shadow the
target area
Repeat the
measurement