Initial Start-Up; Checking The Filter Cleaning Function; Checking The Automatic Start And Stop Function; Unit Operation - Nederman FlexPAK 800 Manual Del Usuario

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•
Make sure that the ground check measurement has been performed. See section
'9.2 Ground check measurement'.
5.2

Initial start-up

WARNING! Risk of electric shock.
• Work with electric equipment is to be carried out by a qualified electrician.
• 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.
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).
NOTE!
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.
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.
NOTE!
Ensure that no valves at any workstations are open.
5.2.1

Checking 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 7, 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

Checking 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

Unit operation

5.3.1

Starting 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.
3.
Press the Standby/Running button on the control panel, see Figure 7, item 8. The white lamp
lights up and the display shows 'Standby'.
FlexPAK 800/1000 DX EN
31