Maintenance And Repair; Emergency Situations; Description; Intended Use - Nederman Lbr-C Bedienungsanleitung

EN LBR-C, LBR-S, LBR-R, LBR-B
• Safety Helmet.
• Non-Sparking Tools wherever possible.
NOTE!
The personal protection equipment should comply to local regulations
for use.
3.8

Maintenance and repair

Maintenance must be performed to Nederman maintenance instructions.
Maintenance work may not be started until the total system has been stopped in
a correct manner, and until the power supply has been cut in a safe manner, for
instance by locking the main switch.
Inspection of the filter hopper section by opening the inspection doors may not
be performed until the filter cleaning system has been activated thoroughly,
and the hopper section emptied of material. In this connection, it must be
checked whether the cleaning has been adequate by examining the residual dust
settlement on the filter bags.
Inspection by opening inspection doors and similar may only be performed
when personal safety equipment, adapted to the conditions, is used.
If a movable ladder is used for the work, it must be secured correctly for stability
before commencing the work.
To prevent generation of static electricity in the filter system, it must be ensured
that the filter and the connected ducts etc. are duly earthed.
Open fire, sparking or some other form of heat generation such as: Welding,
grinding, drilling / boring or smoking, etc. may not take place closer than 3
metres to filters etc. working with an explosive atmosphere, such as dust laden
air.
It must be ensured that cleaning is performed on and around filters etc. to prevent
fire and explosive dust waste from igniting and causing heavy damage.
Service and repair may be performed by specially trained staff only.
Before starting any work, the energy supply must be switched off at the main
switch, and it must be ensured that any unintended restarting cannot occur, for
instance by locking the main switch. Accumulated energy, such as in compressed
air system, must also be switched off, possibly discharged altogether, before
commencing the work.
Inspection of the filter bags when staying at the filter top after opening of the
explosion relief doors may be performed only when the filter system has stopped.
For this purpose, the personal safety equipment referred to above must also be
used.
If the filter or similar is cleaned by a vacuum cleaner, protection must be
established against static electric charging in the suction arrangement.
Boring of holes in filter housing or adjoining pipe ducts may be made only when
the system has stopped and been cleaned, while taking great care and without
heat generation.
3.9

Emergency situations

1. In the case of a fire, explosion, electric shock or any other emergency or
accident:
• Shut-down the system using the emergency switch.
74 QMM080(B)
LBR-C, LBR-S, LBR-R, LBR-B
• Proceed strictly in accordance with the related plant procedure.
2. Prior to restart the dust collector or opening the doors / covers of access
holes, it is necessary to make sure there is no fire inside the filter. That may
be done by:
• Checking the opening status of the Explosion Isolation Flap Valve in the
system ducts (if applicable).
• Checking the alarm signals in the control cabinet (if applicable).
4

Description

The LBR bag dust collector is a modular dust collector made of galvanised steel
sheet with a telescopic legs, suitable for outdoor use. The filter is manufactured
from standardized filter modules and can easily be extended to increase filter
capacity.
4.1

Intended use

The LBR dust collector is designed to extract dust laden air from continuous
processes.
The LBR duct collector have been designed to filter air with dust and material
contents, such as chips and dust from processing machines (within the wood
industry). The wood material can be covered with other materials, such as plastic
and aluminium.
The LBR dust collector type is shown on the name plate:
• LBR-C is used particularly for large air volumes and/or material volumes.
• LBR-B is used particularly for smaller material volumes.
• LBR-S/R is used particularly for medium-sized material volumes.
4.2

ATEX restrictions of use

Filters marked St1 cannot be used for chips and dust with a K
than 200 bar m/s. Wooden dust is typically K
Filters marked St2 cannot be used for chips and dust with a K
than 300 bar m/s. The K - value for dust from grinding of lacquered surfaces
ST
is about 200-300 bar m/s.
The volume of permissible material will depend particularly on filter type, filter
media, filter bag reinforcement, etc.
4.3

Function

Normal operation - see Fig. 2
1. During normal operation, the dust laden air from the plant travels down the
supply duct [1].
2. The dirty air then enters the main fan material handling fan and into the filter
[2].
3. As the dust-laden air enters the inlet section of the filter, the air decelerates
and heavier dust and shavings settle on the hopper floor [3].
4. For the LBR-C type the heavier dust and shavings collected on the hopper
floor are conveyed to the discharge end [11] of the filter by the scrapers on
EN
- value larger
ST
< 200.
ST
- value larger
ST
QMM080(B) 75