Routine Commissioning - Gardner Denver L Series Original User And Service Manual

Condensate Drain
The condensate drain on the aftercooler is actuated via sensor control.
Switching off
Press stop button < O > on the control panel, not the Emergency Stop button.

After shutdown, the compressor has a run on time of 30-50 seconds (soft stop).
The unit may only be shut down using the emergency stop button in real emergencies. When shutting down
normally, please use the O (STOP) key.
Emergency stop
The emergency stop button is located next to the compressor controller. It is used to immediately shut
down the unit. Only use the Emergency Stop button to shut down the unit in emergencies.
Do not stop the Unit using the Emergency Stop Button unless there is a danger to the product or of
personnel injury.
Using the Emergency Stop Button, disconnect, or breaker to stop the Unit will not all the Unit to go
through an unloading sequence, and could result in damage to the Motor, Stater, or other electrical
components. Damage caused in this manner is not covered by the manufacturer's Warranty.
Using the emergency stop
1. Press the <E-stop> button. The compressor is brought to a safe condition.
2. Correct the fault that was the reason for the emergency stop. See the "fault correction"
chapter.
3. Unlock the <E-stop> button.
4. Start up the compressor. See the paragraph "Commissioning after a fault" in the chapter
"Commissioning and operation."
6.5

Routine Commissioning

Rotating parts inside the unit 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 motor/screw
compressor!

After doing work: Check that all safety equipment is reinstalled and that all tools have been taken
out!

Only operate the screw compressor with the coverings closed!
Routine commissioning includes commissioning after maintenance:

Check the oil level in the pressure reservoir.

Open shut-off valves between the screw compressor, reservoir and pipe.

Ensure cooling water supply for only water-cooled units.

Turn on the main power supply switch.

After the power supply was switched on, the compressor controller will boot to the home
screen. The fault shown on the display [power supply fault] must be acknowledged in the
alarm screen prior to starting the unit.

After the acknowledgement, the message [READY TO START] appears on the
display, unless another fault is present.

Press START button [ I ].

To switch off the compressor in the usual way use the STOP button and not the
emergency STOP button. After shutdown the compressor has a run on time of 30-50
seconds (soft-stop). The time remaining is counted down on the display.
Temperature start-up protection
The screw compressor unit will not start up if the ambient temperature is lower than 34°F.
NOTICE
WARNING
WARNING
13-25-640 v00 Page 41