Filter Cleaning In Running Mode; Filter Cleaning Valve Function; Maintenance - Nederman FlexPAK 800 Manual Del Usuario

EN FlexPAK 800/1000 DX
To perform a new filter cleaning in Idling mode, activate the pilot signal and enter Running mode,
or toggle the Standby/Running button to go to Standby mode and press the filter cleaning button
again.
8.3

Filter cleaning in Running mode

Perform filter cleaning in Running mode as follows:
1.
Put the system into Standby mode by pressing the Standby/Running button.
2.
Activate the pilot signal by connecting terminals X1:13 and X1:14 with a jumper. The unit
goes into Running mode. The motor starts, the FCV closes and pressure is established in the
system.
3.
Start the filter cleaning by pressing the filter cleaning button.
The unit will now open and close the FCV 3 times and then leave the FCV in its closed position.
After the last cleaning cycle, the unit returns to Running mode and waits for the pilot signal to
stop. It is possible to perform multiple filter cleaning cycles in Running mode.
When the pilot signal stops, the unit runs for 10 seconds (DIR time) and then opens the FCV and
goes into idling mode. The unit waits for a pilot signal for 12 minutes. If the pilot signal is not
received during this time, the unit will stop the motor and go into Standby mode.
The idling time is set by the SSR timer and default is 12 minutes. DIR time is the delay after the
pilot signal has stopped before opening the FCV. The default is 10 seconds.
8.4

Filter cleaning valve function

The PLC output DO3 is set and sends +24 V to the solenoid valve. The solenoid valve opens the
air flow to the pneumatic piston, which moves the lid on top of the filter upwards letting in air with
atmospheric pressure to the filter top. This sudden opening of the lid on the top lets in air with
great speed which creates a sudden pressure rise above the filters. The pressure increase blows air
through the filter bags removing the dust from the filters.
When power to the solenoid valve disappears, the valve closes and evacuates the pneumatic piston.
The lid falls down and closes the opening of the filter top.
If the piston does not fall down, the piston may not evacuate properly. If the incoming compressed
air is disconnected, the piston should fall down allowing the lid to close the filter top opening.
9

Maintenance

Maintenance work means that the equipment will have to be opened and possibly dismantled. This
may constitute a risk and the maintenance personnel need to know about the risks that may occur
when acting incorrectly.
WARNING!
The motor, fan and air duct may become very hot during operation.
WARNING!
Always use an approved breathing mask, goggles and gloves when replacing the dust sack and
other work that involves exposure to dust.
WARNING!
Use ear protection when the unit is in operation and work is carried out in the vicinity of the upper
section of the dust collector.
WARNING!
Stop operation and clean the entire filter thoroughly from dust before any grinding, welding or
other hot works are performed on the filter exterior or inlet.
Caution! Risk of equipment damage.
During maintenance, it may be necessary to remove the acoustic enclosure over the motor while
the motor is in operation. Take care to prevent objects from falling down into the motor cooling
fan.
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Risk of burn injuries.
Risk of personal injuries.
Risk of impaired hearing.
Explosion risk.