Escaping oil mist is damaging to health.
➤ Do not direct the maintenance hose at persons while venting.
➤ Do not inhale the oil mist.
Fig. 23 Venting the machine
1
Hose coupling (air receiver venting)
2
Pressure gauge
3
Hose coupling (oil separator tank venting)
6
Male hose fitting
7
Shut-off valve
A
Shut-off valve open
B
Shut-off valve closed
8
Maintenance hose
9
Pressure gauge
Isolating the machine from the air system
➤ Close the user's shut-off valve between the machine and the air distribution network.
If no shut-off valve is provided by the user, the complete air network must be vented.
Venting the oil separator tank
The oil circulation vents automatically as soon as the machine is stopped.
➤ Check that the oil separator tank pressure gauge reads 0 psig.
The pressure gauge does not read 0 psig after automatic venting?
➤ Make sure that the user's shut-off valve is closed or that the complete air system is ven‐
ted.
➤ With the shut-off valve closed, insert the male hose fitting
6
into the hose coupling
3
.
➤ Slowly open the shut-off valve
7
to release pressure.
➤ Disconnect the male hose fitting
6
and close the shut-off valve
7
.
➤ If manual venting does not bring the oil separator tank pressure gauge to zero: Contact
an authorized KAESER service representative.
10 Maintenance
10.9 Venting the machine (depressurizing)
9_6917 34 USE
Operator Manual Screw Compressor
AIRTOWER 3C–7.5C Tri-Voltage
65