Hofmann Geodyna 4801P Guide

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 1 of 30

After switching on the machine, the following readings comes up.

Durch drücken der Funktionstaste F1 werden Einstell- und Servicefunktionen zugänglich.

Durch drücken der Funktionstast F1werden Einstell – und Servicefunktionen zugänglich.

By pressing key F1 you enter the configuration menu..

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 2 of 30

The following reading appears:

By pressing 3times key F 6 the key F 4 service routine will be come active.

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 3 of 30

The following reading appears:

By pressing key F 4 the the service program become active.

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 4 of 30

The following reading appears:

By pressing and holding key F1 C – Codes and by rotating the main shaft

you can select calibration and test codes.

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 5 of 30

Code C80 Basic settings of the potentiometers

The following reading appears:

57 4

Diameter Distance

The display proceeds automatically to indicate the basic settings.

Cone adator (backing plate) must be installed!

Setting the diameter potentiometer:

Pull out the gauge arm and apply the outer gauge head to the outher surface of the cone adaptor. Adjust

the diameter potentiometers displayed voltage to be within 3.55 and 3.60 V. Turn the potentiometer

shaft to bring the voltage to within this range.

Setting the distance potentiometer:

With the distance gauge arm is in left home position on the axial guide bushing, adjust the distance

potentiometers displayed voltage to be within a range of 0.10 to 0.15 Volt. Turn the potentiometer shaft

to bring the voltage to within this range.

Press the F6 ENTER KEY to store the values.

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 6 of 30

Code C80 Basic settings of the potentiometers

The following reading appears:

Distance

Pull out the gauge arm exactly 280 mm, hold, and press the F6 ENTER KEY to store the value.

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 7 of 30

Code C80 Basic settings of the potentiometers

The following reading appears:

Place the calibration weight on top of the cone adaptor, its threaded end pointet vertically upwards. Apply the

diameter gauge arm to the thickest part of the calibration weight and press the F6 ENTER key to store the value.

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 8 of 30

Code C80 Basic settings of the potentiometers

The following reading appears:

Next apply the diameter gauge head to the threaded end of the calibration weight and

Press the F6 ENTER KEY to store the value

Calibration is completed and must be stored by entering C90..

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 9 of 30

Code C80 Basic settings of the potentiometers

The following reading appears:

C80.

Step no. 5 has no function yet. Press F6 ENTER KEY to continue

Instructions for adjustment Datum 27.04.2005

geodyna 4801P Page 10 of 30

Code C80 Basic settings of the potentiometers

The following reading appears:

Distance

16.

C80.

Raise the gauge arm and pull out at least 3 times slowly until it clamps. After each clamping hold the

gauge arm for at least 1 second in the instantaneous clamping position before repeating this procedure.

When the gauge arm had been pulled out and clamped 3 times, the reading proceeds automatically with

step no. 7.

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Hofmann geodyna 4801P Guide

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