38 © 2016 Proceq SA
9. Maintenance and Support
9.1 Maintenance
The instrument should be calibrated annually to ensure consistent, reli-
able and accurate measurements. However, the service interval may be
based on actual experience and usage. Consult the applicable standards
for more guidance.
9.1.1 Regular Device Check
Performance checks, see chapter “4.2 Verification (Performance & Uncer-
tainty Check)” of the instrument should be carried out at least once a day or
at the latest after 1000 impacts. In the case of infrequent use, carry out the
check before the beginning and at the end of a test series. In addition, have
the device calibrated by an authorized Proceq Service Center once a year.
NOTE! The unit is working properly when the average is
within the target range. Otherwise, please see chapter “10.
Troubleshooting”.
9.1.2 Cleaning
Leeb Impact device: Unscrew the support ring. Remove the impact
body from the guide tube. Clean the guide tube with the cleaning brush.
Reassemble.
Leeb Indenters: Clean the ball of the Leeb impact bodies and Portable
Rockwell diamond indenter with acetone or similar solvent. (Do not use
water or water based detergents!)
Portable Rockwell and UCI probes: Clean the probes and the dia-
mond indenters with a clean, dry cloth.
Housing: Clean the display and housing with a clean, dry cloth after use.
Also clean the connector sockets with a clean, dry brush.
NOTE! Never immerse the device in water. Do not use com-
pressed air, abrasives, solvents or lubricants to clean the
device.
9.1.3 Storage
Only store the Equotip 550 in the original packaging and in a dry room
free of dust.
9.1.4 Re-calibration for Impact Direction (Leeb only)
For Leeb impact devices the compensation function relies on parameters
specific to each impact device, which are stored in the device. Validity
of the active calibration can be checked through System Probes
Angle Calibration and then pressing the “Test” button. For each impact
direction, the deviation from the curve shall be less than ±0.2 Leeb (HL).
The parameters may change with time or due to external influences. Re-
calibration of the automatic compensation function in Equotip Leeb im-
pact devices (except type DL) is recommended particularly when:
• Impact device has been cleaned, or
• Impact device has not been used for a long time, or
• Impact body has been replaced.
A re-calibration is done by consecutive selection of “0° (vertical down)”,
“90° (horizontal)” and “180° (vertical up)”.
9.1.5 Updating the Equotip 550 Operating System and
Application
Connect the device to the computer. Updates can be done using Equotip
Link as follows:
• Select update symbol
in Equotip Link
• Select “Express” and confirm with “Next”.
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