5 Preventive maintenance
5.1 Preventive maintenance schedule
Before carrying out any maintenance, repair work or adjustments, proceed as
follows:
• Stop the compressor.
• Switch off the voltage and open the isolating switch.
• Close the air outlet valve.
• Depressurize the compressor by opening the manual drain valve(s).
The operator must apply all relevant Safety precautions during maintenance or repair.
Warranty - Product Liability
Use only authorized parts.
Any damage or malfunction caused by bad maintenance is not covered by Warranty or Product Liability.
General
When servicing, replace all removed gaskets, O-rings and washers.
Intervals
The local Customer Centre may overrule the specified maintenance schedule, especially the service
intervals, depending on the environmental and working conditions of the compressor.
The longer interval checks and actions must also include the shorter interval
checks.
Preventive maintenance schedule
Period
(note 1)
Running
hours
(note 1)
Operation
Daily -- • Check readings on the display.
• Compressors with integrated air receiver and/or compressors with
integrated refrigerant dryer:
Check if condensate is discharged regularly.
• Receiver mounted compressors:
Drain the condensate manually at the end of the day.
• Compressors with integrated dryer:
Check the dew point.
Every 3
months
(note 2)
500 Inspect the air inlet filter(s) (AF).
Inspect the prefilter mats on the cooling air intake openings (if fitted).
Check for cleanness and damage. Clean if dirty, replace if damaged.
Clean the compressor and check the air cooler . If necessary, clean by air jet.
Every 6
months
-- • Manually operate the safety valve.
• Check for any damaged wiring or loose connections.
• Check for air leaks.
Instruction book
2920 7110 11 27
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