Johnson Level & Tool Mfg. 40-6936 User Manual

Page 24

Error Display

Note: If above errors appear, act according to corresponding actions
mentioned above. If errors still exist, then the instrument needs repair.

Installation and Removal of the Base
Base Removal
• Rotate the Tribrach locking lever 180° counterclockwise.

• Hold the base plate with one hand, and with the other hand lift up

the instrument by the handle.

Base Installation
• Lift the instrument by hand, and aim the positioning block to the

notch on the base plate. Mount the instrument on the base plate
carefully.

• Tighten the clamp knob on

the base plate.

Instrument exceeds its self-leveling range, level the instrument again.

Display

Error Display & Explanation & Action

Err-04

Difference between every measuring value exceeds 30” during the repeated angle measurement.

Press “0-SET” key and measure again.

Measuring times of repeated angle measurement is more than 15. Press “0-SET” to measure again.

Err-06

Errors during the process of the vertical angle 0-set or adjusting 0-set when the inclination

to the horizontal angle exceeds 45º the instrument needs adjusting.

Positioning block

Notch

Tribrach Locking Level

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