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:
3
,
57 4
,
27
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:
5.
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.