Bosch Power Tools DMD4 manual Maintenance and Service, Recalibration, Maintenance and Cleaning

BM 2609140574 08-08 9/3/08 8:40 AM Page 10

Detection of Electrical Wiring

Issue	Possible Reason	Remedy
Area of voltage appears	• Static charge may be	• It may help to put the other hand
much larger than actual	present on drywall,	on the wall and measure again.
electrical wire.	spreading voltage as	• Turn unit off then back on again at
	much as 12 inches (305
		edge of where voltage was first
	mm) on either side of an
		detected and scan once more.
	actual electrical wire.
		• Shut off the appropriate building
		circuit and restart scan. If
		searching for electrical wiring, use
		metal mode to search for metal
		objects that might be wiring.
Electrical wiring is not	• Wires may not be live (hot)	• Make sure that circuit has power;
detected in area where it is	• Wires may be inside of	make sure that power switches
thought to be.	metal wall covering.	are turned on.
		• Try plugging in a lamp into outlet
	• Wires may be too deep.
		and turning on switch to increase
	(See Maximum Scanning
		current and chance of detection.
	Depth, page 4.)
		• Use metal scan to check for
		detection of metal.

Maintenance and Service

RECALIBRATION

If the main measuring indicator f continuously shows an amplitude even though there is no metal object in the vicinity of the multi- detector, the multi-detector can be calibrated manually:

1.Remove all objects in the vicinity of the multi-detector (including wrist watches or rings of metal) and hold the multi-detector up in the air.

2.With the multi-detector switched off, press both the “on/off” button 7 and the wood- detection mode button 5 until the illuminated ring 1 lights up red and green at the same time. Then release both buttons.

When the calibration process is successful, the multi-detector will start over after a few seconds and is then ready for operation.

MAINTENANCE AND CLEANING

•Protect multi-detector against moisture and direct sunlight.

•Wipe away debris or contamination with a dry, soft cloth. Do not use cleaning agents or solvents.

•In order not to affect the measuring ability of the multi-detector, decals/stickers or name plates, especially metal ones, may not be attached in the sensor area 9 on the front or back side of the multi-detector.

•Do not remove the felt pads 8 on the back side of the multi-detector. Replace the felt pads when they are damaged or used. For this, completely remove the felt pads and glue the new felt pads onto the same spots.

•Store and transport the multi-detector only in the supplied protective case.

•In all correspondence and spare parts orders, please always include the 10-digit article number given on the type plate of the multi-detector.

“AutoCal” CALIBRATION INDICATOR

When the check mark behind the “AutoCal” calibration indicator g flashes over a longer period or if it is not displayed anymore (other than when the “ZOOM” button 4 has been pressed down in the wood-detection mode), reliable scanning is no longer possible.

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