MNL-0391
April 26, 2007
Page 13
BAUER
COMPRESSORS
3.2.5
Maintenance
The Intermediate Separator P/N 081798 requires no maintenance.
3.3
Compressor Valves
3.3.1
Description
The valve heads of the individual stages form the top part of the cylinders. The intake and pressure valves
are fitted inside the valve heads. (Note that the valves are operated by air flow. (See Figure 3-4). On the
suction stroke, the intake valve is opened and air flows into the cylinder. At the start of the compression
stroke the intake valve closes. the end of the compression stroke the compressed air forces the pressure
valve open.
The 1st Stage combines the intake and pressure valves in a plate valve. (See Figure 3-5).
3.3.2
Initial Operational Check
After maintenance work on the valves, the valves should be checked for proper operation. Note that the
intake line to the valve heads is warm and the outlet piping should be hot. This indicates the valves are
operating correctly.
3.3.3
Changing the Valves
• Always replace the valves as a complete set.
• Observe the correct sequence when reassembling.
• Check individual components for excessive wear. If the valve seat and valve disks are dented, replace
the valves.
• Valve head screws must be tightened with a torque wrench.
• Check the valve space in the valve head for dirt and clean if necessary.
Figure 3-4
Valve Function
Figure 3-5
1st Stage Plate Valve
Intake
Pressure
S
Discharge
Side
Intake
Side
To
2nd
Stage
From
Intake
Filter
N4860-F98
