Gardner Denver L Series, Original User And Service Manual, Page: 34 / 60

13-25-639 v00 Page 33
DANGER
8.1 First commissioning
The screw compressor unit is completely factory-assembled. It can be directly connected to the compressed air mains by
means of a flexible connection.
NOTICE
When the compressor system is connected to a power source for the first time, always check the drive
direction of the drive motor. The compressor controller provides a jogging function under the diagnostics menu.
See the controller manual for additional instruction. Incorrect rotation of the compressor may cause serious
damage, even during short periods of operation.
When storing the screw compressor system or in the event of a longer period of downtime, if there is the
risk of frost ( t < 34°F) the cooling water should be completely discharged.
CAUTION
The rotational direction of the motor can only be checked with the casing open. Rotating parts
may lead to injuries, e.g., cutting of finger or hand.

Before commissioning make sure that no one is located in the danger zone of the screw
compressor!

Be careful of rotating parts!

Keep a sufficient distance from rotating machine parts!

Wear ear protectors

Always operate system with the casing closed except when performing this test.
Damages during transport may impair safety!

Before commissioning, every screw compressor should be checked again for damage and
should be watched during the first hour of operation.