Filter Cleaning Valve Function; Maintenance; Spare Parts; Ordering Spare Parts - Nederman FlexVAC Manuel De L'utilisateur

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 the air with atmospher-
ic pressure to the filter top. This sudden opening of
the lid on the top lets in the air with great speed which
creates a sudden pressure rise above the filters. The
pressure increase blows air through the filter bags re-
moving 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
Read Chapter 9 Maintenance
maintenance work.
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! Risk of personal injury
• Always use an approved breathing mask,
goggles and gloves when replacing the dust
sack and other work that involves exposure
to dust.
• The motor, fan and air duct may become very
hot during operation.
• Use ear protection when the unit is in opera-
tion and work is carried out in the vicinity of
the upper section of the dust collector.
• Always disconnect the supply voltage with
the maintenance switch before any service,
whether mechanical or electrical.
• Always lock the maintenance switch in the
off position and, if possible, secure it with a
padlock.
• Always disconnect the compressed air sup-
ply before any service, whether mechanical
or electrical.
FlexVAC
before carrying out any
CAUTION! Risk of equipment damage
During maintenance, it may be necessary to re-
move the acoustic enclosure over the motor
while the motor is in operation. Take care to
prevent objects from falling down into the mo-
tor cooling fan.
Contact Nederman if the frequency converter
needs service.
The unit is CE-marked. Connections to the unit,
initial start-up and maintenance are to be car-
ried out according to the product manuals.
10 Spare Parts
CAUTION! Risk of equipment damage
Use only Nederman original spare parts and ac-
cessories.
Contact your nearest authorized distributor or
Nederman for advice on technical service or
if you require help with spare parts. See also
www.nederman.com.
10.1 Ordering spare parts
When ordering spare parts always state the following:
• The part number and control number (see the
product identification plate).
• Detail number and name of the spare part (see
www.nederman.com/en/service/spare-part-
search).
• Quantity of the parts required.
11 Recycling
The product has been designed for component mater-
ials to be recycled. Different material types must be
handled according to relevant local regulations. Con-
tact the distributor or Nederman if uncertainties arise
when scrapping the product at the end of its service
life.
11.1 Environmental information
The following environmental information is valid for
FlexVAC:
• Cadmium-free and halogen-free relays in the control
equipment.
• Solvent-free washing and lacquer.
• 93,6% recyclable.
EN
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