➤ Keep a log of all maintenance and repair work.
This enables the frequency of individual maintenance tasks and deviations from our recommen‐
dations to be determined.
Further information A prepared list is provided in chapter 10.19.
10.2.2 Resetting maintenance interval counters
SIGMA CONTROL BASIC has a maintenance interval counter that counts down the operating hours
to the next maintenance.
The counter reading shows the number of operating hours to the next periodic machine maintenance.
Reset the counter to the original value once the task has been carried out.
1. Select parameter 2 (maintenance interval counter) with the «UP»/«DOWN» keys.
2. Depress the «enter» key for at least 3 seconds.
3. When the cursor blinks, confirm the offered value with the «enter» key.
10.2.3 Regular maintenance tasks
The table below lists maintenance tasks required.
➤ Take note of the controller's service messages and carry out tasks punctually, taking ambient
and operating conditions into account.
Interval
Maintenance task
See chapter
Daily
Drain condensate.
Weekly
Check the cooling oil level.
Cooler:
Check the filter mat.
Control cabinet:
Check the filter mat.
Check condensate drainage
Air receiver
Drain condensate manually.
Up to 1,000 h
Maintain the drive belt.
Check the air filter.
Clean the cooler.
Cooler:
Clean the filter mat.
Control cabinet:
Clean the filter mat.
Clean the refrigerant condenser.
Up to 3,000 h
Change the air filter element.
Cooler: Change the filter mat.
Control cabinet: Change the filter mat.
h = operating hours
*When using SIGMA FLUID S-460
10 Maintenance
10.2 Maintenance Schedule
54
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
Number: 9_6945 01USE