10.3.2 Resetting maintenance interval counters
According to the way a machine is equipped, sensors and/or maintenance interval counters moni‐
tor the operational state of important functional devices. Required maintenance work is shown on
SIGMA CONTROL 2 .
Precondition Maintenance performed and
maintenance message acknowledged.
➤ Reset the maintenance interval counter as described in the SIGMA CONTROL 2 operating
manual.
10.3.3 Regular maintenance tasks
The table below lists maintenance tasks required.
The compressor must be evacuated and then filled with gas after commencing any mainte‐
nance or service work requiring an opening of the pressure system.
➤ Detailed information can be found in chapter 7.8.
➤ 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
weekly Check the cooling oil level. 10.13
Check the oil collecting tank. 10.4
Control cabinet:
Check the filter mat
10.5
Up to 1,000 h Clean the cooler. 10.6
Check the cooling air filter mat 10.8
Up to 8,000 h
At least annually
Change the cooling air filter mat 10.8
Control cabinet:
Change the filter mat.
10.5
Display:
SIGMA CONTROL 2
Maintain the motor bearings. 10.9
Check the coupling. 10.10
Display:
SIGMA CONTROL 2
At least annually
Change the oil filter. 10.17
Display:
SIGMA CONTROL 2
Every 3 years at least
Change the oil separator cartridge. 10.18
Change the cooling oil. 10.16
Annually Check the pressure relief valve. 10.11
Check the overheating safety shutdown function. 10.12
Check the cooler for leaks. 10.6
Maintain the water-cooling system. 10.7
Check that all electrical connections are tight. –
h = operating hours
Tab. 38 Regular maintenance tasks
10 Maintenance
10.3 Following the maintenance plan
ESD_2C_10357405_10–LIN_00 E
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2
57
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