MNL-126509
April 4, 2013
Page 21
3.1.6.1
Maintenance
The inter-stage Separator requires no maintenance.
3.1.7
Cooling
3.1.7.1
General
The cylinders of the compressor, the inter-stage coolers and the after cooler are air cooled. For this pur-
pose the compressor is equipped with a fanwheel which draws the cooling air through the unit. The fan-
wheel is driven by the drive motor V-belt and is also used as the compressor flywheel.
3.1.8
Valves and Heads
3.1.8.1
Functional Description
The valve heads of the individual stages form the top part of the cylinders. (See Figure 3-9).
The intake and pressure valves are fitted inside the valve heads. Note that the valves are operated by the
flow of the medium. On the intake stroke, the intake valves open and the medium flows into the cylin-
ders. At the start of the pressure stroke the intake valve closes and the medium opens the pressure valve.
The Intake and Pressure Valve of the 1st Stage of the IK120II C & G are a combined plate valve under the
valve head, See Figure 3-10.
Figure 3-9
Valve Operation
Intake
Discharge
