G 120 II V
Page 66 1st Edition, Rev. 0 Chg. 2
4.2.2.7 Bleed Valve
A manually operated valve used to release the pressure in the chamber before maintenance.
4.2.2.8 Pressure Maintaining Valve
The pressure maintaining valve ensures that pressure is built up in the system from the start of delivery,
thus achieving constant optimum purification. It also assures proper working conditions for the final
stage of compression.
4.2.2.9 Safety Valve
The safety valve is located on the coalescing oil and water separator and acts as the safety valve for the
final stage of the compressor.
4.3 Maintenance
4.3.1 Oil and Water Separator
To remove the sintered metal filter proceed as follows: (See Figure 4-9). Disconnect the power and shut
off the inlet supply line if applicable.
1. Depressurize the system by means of the bleed valve.
2. Remove the tubes connected to the side of the filter head (1).
3. Unscrew and remove the filter head.
4. Unscrew the sintered metal filter (2) from the filter head.
5. Remove the center screw (3) to remove the sintered metal filter.
6. Clean the sintered metal filter using hot soapy water. Blow dry with compressed air.
7. After cleaning the element, record the number of operating hours to ensure exact attention to the
maintenance intervals.
8. Lubricate the threads and O-rings as well as the threaded part of the sintered metal filter with petro-
leum jelly. Apply sparingly.
9. Dry the inside of the filter housing with a clean cloth and check for corrosion before reinstalling the
sintered metal filter.
10. In the event you discover corrosion, replace the corroded parts with new Bauer parts.
11. Reinstall the sintered metal filter assembly and filter head.
12. Replace all removed tubes, close all valves and check for leaks.
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