Craftsman 3300 manual Adjustment is Necessary

INTHEFIELDTECHNIQUES

-PinpointMode

5.Lower the search coil to the ground, maintaining it

elevated about 1/2 inch above the surface (be sure that this ground does not contain metal).

•If the detector emits

sound with the search coil 1/2 inch over the ground, further

ADJUSTMENT IS NECESSARY.

•If the detector remains silent with the searchcoil 1/2 inch over the ground, no further adjustment is necessary; the detector is

“GROUND BALANCED”.

6.If the detector emits sound with the coil over the ground in STEP 5, further adjustment of the ground balance KNOB is required as follows:

•Lift the search coil waist high

•Rotate the ground balance KNOB clockwise 1/16 of a turn

•Press PINPOINT

•Lower the search coil to the ground again

If the detector still emits a tone, repeat this procedure. You are searching for the ground balance knob position where the detector is just silent.

It is important to move the knob in small increments in order to find the first setting (moving clockwise) at which the detector remains silent. To insure yourself of the optimal adjustment, move the KNOB slightly counterclockwise from a silent-adjusted position to check for the most counterclockwise silent position possible.

If the KNOB is over-adjusted in the clockwise direction, the detector can lose sensitivity. An over-adjusted condition can also cause the detector to sound off when the coil is lifted away from the ground.

As your search takes you to different areas, verify the ground balance setting periodically using the above procedure. Within a geographical area, ground conditions can change. Varying elevations, proximity to water, and concentrations of rock, sand or clay can all affect ground condition and sometimes require recalibration with the ground balance knob.

•If the detector remains silent with the search coil 1/2 inch over the ground, no further adjustment is necessary; the detector is

“GROUND BALANCED.”

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