Gardner Denver VST225, Инструкция по установке, эксплуатации и обслуживанию

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6-7
In case the drain valve is fouled with dirt, cleanse the lower head also:
1. Be sure the unit is completely off and oil sump is depressurized.
2. Disconnect, lockout and tagout power supply to the compressor package.
3. Close (when provided) valve isolating compressor package from air system.
4. Unscrew drain valve from isolation valve.
5. Inspect and clean lower head.
6. Reinstall in reverse order. If the vent adaptor has been removed from the lower head, note its
location and orientation in relation to the lower head
– see detail Figure 6- 4. The long end of the
black tube attached to the vent adaptor must protrude upward into the lower head connection
during installation
. This is necessary to promote adequate gas venting during liquid drainage.