Initial Start-Up; Check The Filter Cleaning Function; Check The Automatic Start And Stop Function; Start The Unit - Nederman FlexPAK 800 DX Manuel D'instruction

5.2

Initial start-up

WARNING! Risk of electric shock.
•
Unauthorized personnel may NOT remain in the vicinity of the unit when the control unit
is open. Authorized personnel performing inspections and adjustments on the control
equipment need to be careful to avoid electrical shocks.
• Always disconnect the supply voltage using the maintenance switch when performing
inspections and adjustments. If the frequency converter has to be opened, wait
5 minutes after disconnecting power to avoid a static electric shock.
NOTE! Ensure that no valves at any workstations are open.
Remove the control unit lid since checks and adjustments in the control unit may be
necessary during the initial start-up. (The PLC and the software are password-protected).
The initial start-up is to be performed with the acoustic enclosure removed to verify the
direction of rotation. Refit the acoustic enclosure when all checks have been performed.
5.2.1

Check the filter cleaning function

When the unit is in Running mode, see Section '6.1.3 Running (Running mode)', press the
filter cleaning button, see figure 5, item 8, and check that the filter cleaning procedure
starts. The filter cleaning function consists of the Filter Cleaning Valve (FCV), which is a
pneumatic cylinder with a valve disc. The FCV is located at the top of the filter housing
under the enclosure, see figure 8, item 6. A distinct change in sound can be heard as the
valve releases atmospheric air into the filter, indicating that the function works properly.
See also Section '3.1 Function'.
5.2.2

Check the automatic start and stop function

NOTE! This procedure only works if default PLC settings are used.
Press the Standby/Running button to put the unit into Standby mode. The unit is not to
start until a valve is opened at a workplace activating its microswitch, or the test start/
filter cleaning button is pressed, see the top of figure 8 and Section '8.3 Filter cleaning in
Running mode'. When the valve closes, the unit switches over to Idling mode and after a
delay of approximately 10 seconds, a filter cleaning operation is performed.
After an additional time delay of approximately 12 minutes, the unit will go into Standby
mode.
The filter cleaning delay is set by the DIR_time relay, and the stop delay is set by the SSR_
time relay.
With all valves at the workstations closed, check that the motor slows down (a distinct
change in sound can be heard), and that switching to Idling mode with filter cleaning takes
place after approximately 10 seconds.
Approximately 12 minutes after the unit has switched to Idling mode, it should go to
Standby mode due to the SSR function switching off.
5.3

Start the unit

For more information regarding initial start-up, see the 'Installation and service manual'.
Start the unit as follows:
1. Turn the maintenance switch to position 1.
2. Check that compressed air is connected to the unit.
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FlexPAK 800/1000 DX EN
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