Nardi Atlantic 100 Instruction Manual - page 8
Instruction Manual
ATLANTIC 100
Page 8
9.11. Valves:
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 the flow
of the medium. On the suction stroke, the intake valves open
and the medium flows into the cylinders. At the start of the
compression stroke the intake valve closes and the medium
opens the pressure valve.
Please follow the instructions below for changing the valves:
Always replace valves as a complete set.
Carefully clean dirty valves.
Observe the correct sequence when fitting together again.
Check individual components for excessive wear. If the valve seat
and valve disks are dented, replace the valves.
Use only satisfactory gaskets and O-rings on reassembly.
After finishing all maintenance work on the valves, turn the
compressor manually and check whether all items have been
correctly installed. After 30 minutes after starting, switch off the unit
and check again.
Replace the valves every 500 operating hours to avoid fatigue
failure.
9.12. Valve change:
Changing the valve of the 1st stage:
Put the attention at the picture and check that the mark ‘T’ Is really at the
top. Remove gaskets and O-rings if damaged.
Changing the valve of the 2nd stage:
Please follow the procedure below:
- Unscrew the intake and pressure lines from the cylinder head.
- Unscrew the screw of valve-cover.
- Clean intake and pressure valves and check for wear. Valve seats and plate valves
must not show any signs of wear or damage. Replace damaged parts.
- Assembly is performed in the riverse sequence of removal.
- Check the pressure valve function and stoke by lifting the valve plate.
- Check O-rings and replace them if damaged.
- Fix the valve-cover.
Reconnect the intake and pressure lines.
Changing the valve of the 3rd – 4th stage:
Please follow the procedure below:
- Unscrew the intake and pressure lines from the cylinder head..
- Fix the head
- Unscrew the intake valve body.
- Clean intake and pressure valves and check for wear. Valve seats and plate valves
must not show any signs of wear or damage. Replace damaged parts.
- Assembly is performed in the reverse sequence of removal.
- Peen the cylinder head on the screw.
- Check the pressure valve function and stoke by lifting the valve plate.
- Check O-rings and replace them if damaged.
- Fix the head at cylinder.
- Reconnect the intake and pressure lines.