10 Maintenance
10.1 Safety
Follow the instructions below to ensure safe machine maintenance.
Warning instructions are located before a potentially dangerous task.
Basic safety instructions
WARNING
Danger of injury from hot, rotating and electrically live components!
Serious injury can be caused by touching such components.
➤ Shut down the machine before opening any doors/canopy.
➤ Do not carry out any checks or maintenance while the machine is running.
1. Follow the instructions in chapter 'Safety and Responsibility'.
2. Maintenance work may only be carried out by authorized personnel.
3. Before restarting the machine, make sure that:
■ No personnel are working on the machine,
■ all protective guards and cover panels are screwed back on,
■ all tools have been removed from the machine.
Working on pressure system
1. Check that all air consumers are disconnected.
2. Wait until the machine is automatically vented (check that the pressure gauge indicates 0 bar).
3. Open outlet valves carefully to ensure that the line between the minimum pressure/check valve
and the compressed air outlet is vented.
4. Do not open or dismantle any valves.
Working on the drive system
➤ Before commencing work make sure that:
■ The «battery isolating switch» is off.
■ The machine has cooled down.
Further information Details of authorized personnel are found in chapter 3.4.2.
Details of dangers and their avoidance are found in chapter 3.5.
10.2 Maintenance message on the controller
The controller displays maintenance intervals. Display begins 25 hours before the interval will expire.
When the machine is switched on, the «Information» key illuminates. The «Acknowledge» key
flashes.
Further information See chapter 8.4 for more information on acknowledging maintenance messages and resetting main‐
tenance interval counters.
10 Maintenance
10.1 Safety
96
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
No.: 9_6975 00 E
