Donaldson Torit DCE 2000 Series User manual

DCE 2000 Series Dust Collectors
Installation, Operation and
Maintenance Manual
Publication 2326K (GB) • 1111 1A 3519 8000 (12)
'MASTER' LANGUAGE

Installation, Operation and Maintenance Manual
DCE 2000 Series Dust Collectors
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IMPORTANT
Indicates information on the efficient operation of the collector.
Indicates important information directed towards preventing damage.
Indicates an important warning, designed to prevent injury or extensive damage.
EXPLANATION OF SYMBOLS USED
PLEASE READ THIS MANUAL CAREFULLY BEFORE INSTALLATION.
THIS MANUAL SHOULD BE READ IN CONJUNCTION WITH THE RESPECTIVE
CONTROLLER MANUAL SUPPLIED WITH THE DUST COLLECTOR:
IPC OR IPC (DR) CONTROLLER – PUBLICATION 2699
PT CONTROLLER – PUBLICATION 2697
FOR DETAILS OF THE OPTIONAL SECONDARY OR
ABSOLUTE FILTER MONITOR, REFER TO PUBLICATION 2920.
PRODUCT RELIABILITY, WARRANTY AND SAFE
OPERATION MAY BE COMPROMISED BY NOT FOLLOWING
THE GUIDANCE GIVEN IN THESE DOCUMENTS.

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DCE 2000 Series Dust Collectors
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IMPORTANT
Improper operation of a dust control system may contribute to conditions
in the work area or facility that could result in severe personal injury and
product or property damage. Check that all collection equipment is
properly selected, sized and operated for the intended use.

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CONTENTS
General safety requirements ..................................................................................5
Installation ................................................................................................................9
General guidance to lifting.............................................................................10
Standard collectors with dust container or rotary valve................................10
Hopper type collectors ..................................................................................11
Venting type collectors ..................................................................................12
Pressure balance pipe ...................................................................................12
Flat bar stiffening ...........................................................................................13
Compressed air requirements.......................................................................13
Controller .......................................................................................................14
Overload protection .......................................................................................15
Integral fan .....................................................................................................15
Interlocks........................................................................................................16
EEx controls...................................................................................................17
Antistatic earthing ..........................................................................................17
Explosion relief...............................................................................................18
Installation check list......................................................................................18
Commissioning ......................................................................................................19
Commissioning check list..............................................................................19
Start-up sequence .........................................................................................20
Shut-down sequence.....................................................................................20
Operation ................................................................................................................21
Principle of operation.....................................................................................21
Dust disposal .................................................................................................22
Maintenance ...........................................................................................................23
Routine inspection .........................................................................................23
Servicing schedule.........................................................................................24
Secondary or absolute filter replacement .....................................................27
Fan assembly removal/replacement .............................................................27
Specifications ........................................................................................................32
Description and range ...................................................................................32
Construction...................................................................................................33
Spare Parts .............................................................................................................38
Declaration of Conformity ....................................................................................43
Table 1 DCE 2000 Series dust collector delivery information ............................9
Table 2 Predicted flame lengths........................................................................18
Table 3 Torque values for bolts with ISO metric thread ....................................30
Table 4 Fault location ........................................................................................31
Table 5 DCE 2000 Series dust collector range .................................................32
Table 6 Compressed air manifold design details ............................................35
Table 7 Compressed air requirements .............................................................36
Table 8 Standard fan motor supply voltage details .........................................36

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DCE 2000 Series Dust Collectors
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GENERAL SAFETY REQUIREMENTS
The collector should be stored as supplied. Only remove packaging to install.
For the purposes of storage:
Collector with specification for inside use = IP50.
Collector with specification for outside use = IP54.
The dust collector should be used only when it is in a technically acceptable
condition. Regular maintenance, as set out in this manual, is required to
minimise technical failure. Third party supplied components (for example
motors) should be maintained according to the manufacturer's instructions.
You should ensure any persons carrying out work on the supplied equipment
follow any relevant recognised standards/codes, have received adequate
training and are competent to do so. Areas requiring a competent person
include:
Maintenance on any component identified as a potential ignition source.
Lifting and erection.
Electrical installation, inspection and maintenance work.
Pneumatic installation, inspection and maintenance work.
Any access to internal classified potentially explosive atmospheres where
there may be a risk due to explosion.
During assembly/installation or dismantling of equipment, potential ignition
sources may occur that were not considered in the risk assessment of the unit
in operation (for example, grinding, welding sparks, etc.)
You should use the dust collector in full accordance with the conditions set
out in the Order Acknowledgment and relevant Scope of Delivery. Failure to
do so may compromise product reliability, warranty and safety. The Scope of
Delivery is an integral part of the manual.
Other items of equipment, not supplied under the Scope of Delivery from
Donaldson, should be installed, operated and maintained according to the
documentation supplied with the respective equipment.
Any modification carried out on the 'as supplied' equipment may reduce
reliability and safety, and will nullify warranty; such actions fall outside the
responsibility of the original supplier.
The hopper should not be used as a storage vessel. To prevent damage to
the collector, care should be taken to avoid an excessive build up of heavy
materials.
Where necessary for safety, the dust collector is fitted with fixed guards.
Removal of these guards and any subsequent work should only be carried
out after adequate precaution is taken to ensure it is safe to do so. All guards
should be refitted before re-energising.
The access door requires tools to open. To avoid danger from rotating fan
impellor, ensure fan is isolated and allow sufficient time for fan to become
stationary.

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GENERAL SAFETY REQUIREMENTS
Compressed air is recommended for collectors that operate using reverse
jet cleaning. Alternative gases should be assessed before use to ensure that
explosive atmospheres are not introduced during media cleaning.
Where the equipment supplied is suitable for working within a potentially
explosive atmosphere (as defined by Directive 94/9/EC) it will be according
to the categories and conditions marked on the collector serial nameplate.
You should ensure the equipment supplied by others is also suitable. If no
marking is given on the serial nameplate then the supplied equipment is not
suitable for use in potentially explosive atmospheres.
Care should be taken to ensure that any potentially explosive atmosphere
is not present when performing operations that increase the risk of ignition
(opening of controller for adjustment or electrical repair for example). Ensure
the installation is always returned to its original state.
To reduce the risk of ignition when handling explosive or flammable materials,
it is important that the accumulation of flammable deposits are prevented/
removed, e.g. from within ducting etc.
If the collector is handling a potentially explosive dust or is placed in a
potentially explosive atmosphere, then all motors should be connected to
thermal protection devices to prevent them exceeding their maximum surface
temperature. All electrical equipment should comply with a category according
to EN 60079-0.
Where the dust being processed can ignite due to exothermic reaction,
including self ignition, the collector MUST be fitted with a suitable explosion
protection method (venting for example). The risk of ignition can be minimised
by avoiding the accumulation of dust layers with regular cleaning.
The dust collector may be fitted with explosion protection in the form of a vent
panel. Precautions, as set out in the Scope of Delivery, are used to minimise
the risk of ignition of any dust clouds contained within the dust collector. The
possibility of other ignition sources being introduced into the collector during
periods where any dust cloud may be present should be minimised. Particular
care should be taken to avoid introducing glowing particles via the collector
inlet ducting.
The explosion relief assembly, where fitted, has been designed to provide
adequate safety from an explosion initiated from within the collector, for the
given dust explosion characteristics and collector arrangement as set out in
the Scope of Delivery. You should ensure that explosions are not allowed
to propagate into the dust collector (using suitable isolation devices) since
pressures may be generated leading to unsafe equipment rupture.
Where applicable, equipment connected to the dust collector (for example,
a cyclone) should be protected, using suitable isolation devices, against the
transfer of flame and pressure if, in the event of an explosion initiating inside the
dust collector, the connected equipment is not capable of safely withstanding
these effects.

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GENERAL SAFETY REQUIREMENTS
The explosion relief assembly, where fitted to the dust collector, is not
suitable for use with dusts that are classified as poisonous, corrosive, irritant,
carcinogenic, teratogenic or multigenic unless the dust released during the
explosion venting process can be contained to a safe level.
In order to ensure the required venting efficiency is maintained, the explosion
relief assembly, if fitted to the collector, should not be obstructed in any way.
It may be necessary to provide a facility to shut down the equipment in the
event of an explosion (where collectors are fitted with explosion relief panels).
The signal should be taken from the bursting panel detection device.
Part of the risk assessment on possible ignition sources for dust and gas
mixtures with very low MIE, has considered the electrostatic risk from cone
discharges. Here the basis of safety is based on using a conductive bin, dusts
with a median particle size of less than 400µm and advising frequent emptying.
You may wish to consider the use of a sprinkler system when handling explosive
or flammable materials.
None of the fan assemblies can be considered to be a fully sealed design,
indeed most are arranged with either an open inlet or an open outlet. For this
reason, the internal and external atmospheres can be considered the same in
terms of any potentially hazardous classification.
Standard fan assemblies should not exceed 3000 rpm (50 Hz supply) on
systems fitted with an inverter drive.
The filtration media is suitable for filtering particulate only (and not gas).
Some applications are prone to risk of fire. This risk can be reduced by pulse
cleaning and emptying the dust container regularly.
Any extinguishing technique and material used must be suitable for the
flammable nature of the dust.
A water sprinkler system can be fitted as a special option.
Materials handled by the dust collector may be hazardous (e.g. toxic). Conduct
a Risk Assessment to ensure correct technique is employed.
The dust collector should be cleaned and put into a safe condition prior
to decommissioning. All equipment decommissioning/removal is to be
executed in a manner consistent with applicable codes, regulations and sound
engineering practice.

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Jet tube
Fan motor
terminal box
Diaphragm valve
Discharge hopper
Seal frame
Access door
Compressed air
distribution manifold
Manometer
connections*
Fan
Lifting bracket
Figure 1 DCE 2000 Series dust collector
Model DCE F2036 illustrated
Quick release dust
container
FAN/ACOUSTIC DIFFUSER
SECTION
Cleaned air outlet
Contaminated air
inlet (at rear)
Fabric element
Earthing post*
(antistatic version)
Optional
compressed air
assembly*
Cleaning system
access panel
Controller
FILTER SECTION
BASE SECTION
*May be fitted either side –
Standard position, left-hand side

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DCE 2000 Series Dust Collectors
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INSTALLATION
Where equipment is installed in a Potentially Explosive Atmosphere,
care should be taken not to locate or use the collector where external
ignition sources can be introduced, for example stray electric currents,
lightening, electromagnetic waves, ionising radiation, ultrasonic waves.
When handling explosive or flammable materials and the risk of a fire is
high, then precautions such as fitting a sprinkler system and not locating
the collector in a zone 21/1 area should be considered.
When handling explosive or flammable materials the collector should be
located so as to avoid external heat sources, e.g. from nearby processes
or extreme direct sunlight.
Where applicable, care is required when siting the dust collector to
ensure that the effects (flame, pressure, noise and fire) produced during
and after the explosion venting process do not put at risk personnel and
nearby plant.
The collector is not designed to support site-installed ducts,
interconnecting piping or electrical services. All ducts, piping or
electrical services must be adequately supported.
All external equipment connected to the dust collector should be
correctly sealed. This can be achieved by applying a continuous 5 mm
bead of sealing compound to the mounting surface, along each side
of the hole pattern. For non-Donaldson equipment please also check
supplier's IOM manual for any specific requirements.
DCE 2000 Series dust collectors are supplied in a number of factory assembled
sections, as outlined in Table 1:
TABLE 1 – DCE 2000 SERIES COLLECTOR DELIVERY INFORMATION
Supplied in two sections:
– Base section
– Filter section
DCE 2000 venting type dust collectors:
Supplied in three sections:
– Base section
– Filter section
– Fan/acoustic diffuser section
DCE 2000 standard dust collectors
with dust container or rotary valve:
Supplied in two sections:
– Filter section
– Fan/acoustic diffuser section
DCE 2000 hopper type dust collectors:

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DCE 2000 Series Dust Collectors
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General guidance to lifting
All assemblies should be lifted using the four-point lifting arrangement
(see Fig. 2).
If advantageous, the filter and fan sections may be fitted together prior to lifting
onto the base section.
Chains or slings must be used with an adequate SWL (safe working
load). (Refer to lifting label located adjacent to lifting bracket for weight
of equipment supplied by Donaldson). Chains must be long enough to
ensure that the included angle between diagonal chains is not greater
than 90°.
Ideally the chains should be adjusted to give a horizontal lift. If the chain lengths
are not adjusted the equipment will hang at an angle but can still be lifted safely.
The lifting brackets should only be used to lift the equipment as supplied.
i.e. not with any ancillary equipment fitted.
Standard collectors with dust container or rotary valve
Lift the base section into position and, using plumb lines and spirit levels, line
up both horizontally and vertically using shims under legs where required.
Drill through the base section holes and insert and tighten expandible bolts (if
required, details of foundation fixing positions are provided in Publication 2325).
For collectors with dust container, locate position for dust container base panel,
drill through fixing brackets and secure with bolts. Adjust height to provide an
effective seal between dust container and sealer gear.
INSTALLATION
≤90°
Figure 2 Four-point lifting
arrangement
Fixings located on
outside of unit
Fixings located within
clean side of unit
Figure 3 Applying sealant to
base section joint flange

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Remove lifting brackets from base section and apply sealing compound around
the flange making a continuous 5 mm bead along each side of the holes (see
Fig. 3). Lift the filter section into position and secure using nuts, bolts and washers
to form an airtight seal.
Remove lifting brackets from filter section and, repeating the procedure above,
fit the fan section.
When the collector is fitted with antistatic filter elements, an earthing
connection must be made between the base and filter sections, and
also the filter and fan sections, using the earthing straps provided (see
Figs. 4 and 5).
Hopper type collectors
When the collector is fitted with explosion relief panels, the explosion
relief area is suitable for the collector volume only. Additional protection
may be required when mounting onto other vessels.
Apply sealing compound around the mounting flange making a continuous
5 mm bead of sealant along each side of the holes (if required, details of mounting
flange fixing positions are provided in Publication 2325).
Lift the filter section into position and secure using nuts, bolts and washers to
form an airtight seal. Remove lifting brackets from filter section and apply sealing
compound around the flange making a continuous 5 mm bead along each side
of the holes. Lift the fan section into position and secure using nuts, bolts and
washers to form an airtight seal.
When the collector is fitted with antistatic filter elements, an earthing
connection must be made between the filter and fan sections, using
the earthing strap provided (see Fig. 5).
INSTALLATION
Figure 5 Earthing connection
between filter and fan sections
Earthing strap
Fan section
side panel
Filter section side panel
Figure 4 Earthing connection
between base and filter sections
Earthing strap
Filter section
side panel
Base section side panel

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DCE 2000 Series Dust Collectors
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Venting type collectors
Lift the base section into position and, using plumb lines and spirit levels, line
up both horizontally and vertically using shims under legs where required. Drill
through the base section holes and insert and tighten expandible bolts (if required,
details of foundation fixing positions are provided in Publication 2325). For
collectors with dust container, locate position for dust container support panel,
drill through fixing brackets and secure with bolts. Adjust height to provide an
effective seal between dust container and sealer gear.
Remove lifting brackets from base section and apply sealing compound around
the flange making a continuous 5 mm bead along each side of the holes (see
Fig. 3). Lift the filter section into position and secure using nuts, bolts and washers
to form an airtight seal.
When the collector is fitted with antistatic filter elements, an earthing
connection must be made between the base and filter sections, using
the earthing strap provided (see Fig. 4).
Pressure balance pipe
When this option is fitted, the dust container may be lined with a polythene bag
which can be closed and sealed before lifting out of the container to assist in the
safe removal of toxic or noxious dusts. The containers supplied for this purpose
are fitted with a detachable pressure balance pipe to prevent the bag from being
drawn up into the collector.
To assemble the pressure balance pipe, the following procedure should be used
(refer also to Fig. 6):
1 Slip the worm drive hose clip over the pressure balance pipe.
2 Slide the pressure balance pipe over the pipe connection on the dust container.
INSTALLATION
Figure 6 Pressure balance pipe arrangement
Rubber sealing strip
Dust container
Clean air chamber base
Worm drive hose clip Bin balance spigot
assembly
Pressure
balance pipe
Worm drive
hose clip
Pipe connection

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DCE 2000 Series Dust Collectors
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3 Position the worm drive hose clip to suit, and tighten until sufficiently secured.
4 Take the other end of the pressure balance pipe, and slip the worm drive hose
clip over it.
5 Slide the pressure balance pipe over the bin balance spigot assembly.
6 Position the worm drive hose clip to suit, and tighten until sufficiently secured.
Flat bar stiffening
For collectors operating at –1140 mm WG or collectors with top explosion relief,
a set of flat bar stiffeners is supplied with the collector. The flat bar stiffeners
should be fitted at the site joints when the collector is being installed (see Fig. 7).
Compressed air requirements
DCE 2000 Series dust collectors require an independent supply of clean, dry,
oil-free compressed air. Details of atmospheric pressure and quantity are given
in Table 7 (refer to 'Specification' section). A design label is also attached to
each manifold. Where an existing factory mains system is to be used it may be
necessary to install an additional moisture separator in the supply line to the unit.
If a compressor is being installed to supply the unit, then the following conditions
should be observed as far as possible:
Alternative cleaning gases should be assessed before use to ensure
explosive atmospheres are not introduced.
Type of compressor
Use a compressor of ample capacity – an overloaded compressor tends to
produce excessively contaminated, moisture-laden air.
INSTALLATION
Stiffener
Side/Back
panel
Hopper
Stiffener
Gusset plate
Hopper site jointTypical site joint Filter section to inlet
section site joint, rear
Back
panel
Inlet
Stiffener
(40 x 12 on wide units)
Figure 7 Typical fixing positions of flat bar stiffeners

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DCE 2000 Series Dust Collectors
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Location of air intake
Avoid locating the air intake in an excessively polluted area and install an adequate
air intake filter. The compressor air intake should be sited, if possible, on the
north side of the building – fresh air drawn from the north side is usually cooler
and denser, and therefore has a lower moisture content. (South of the equator
the reverse will apply).
Layout and installation of air lines
The pipework between compressor and dust collector should be long enough
to act as a cooling device for the compressed air. A typical requirement for the
smaller installation would be 10 m (30ft) of 12 mm (½" NB) piping. For further
details see Table 7. The piping should be installed to provide a fall in the direction
of air flow to assist in the drainage of accumulated moisture. A moisture separator
should be provided at the lowest point of the installation.
Pressure relief
The manifold has a maximum operating pressure of 6.2 bar (see Table 6 in
‘Specifications’ section). It is a requirement that adequate precaution is taken
to avoid exceeding this pressure. Where a relief valve is supplied by Donaldson
this device has a relief rating of 17 dm³/s at 6.9 bar. Extra system relief will be
required if the connected supply can exceed this.
Controller
It is a requirement of the Supply of Machinery (Safety) Regulations 1992
to provide adequate isolation and emergency stop facilities. Due to the
varied nature of site installations this cannot be provided by Donaldson
but instead is the responsibility of the customer.
Ensure all personnel carrying out electrical installation work on the
equipment follow any relevant recognised standards/codes and are
competent to do so.
Always isolate power before opening the controller.
Each DCE 2000 Series dust collector is supplied with either an IPC Controller or
an IPC (DR) Controller to operate the reverse jet cleaning system.
If the dust collector is not fitted with an IPC Controller please refer to
supplied documentation.
For IPC or IPC (DR) Controller connections and set-up, refer to Publication
2699.
INSTALLATION

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DCE 2000 Series Dust Collectors
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(DR connections)
On units fitted with an IPC (DR) Controller, the cleanside and dirtyside tapping
points require connecting as shown in Figure 8, using the DR connection kit
supplied.
Overload protection
All feeder circuits should be adequately protected with suitably-rated fuses and
contactors with integral overload protection.
Integral fan
When the collector is fitted with a fan it should be wired to the fan terminal box
located on the side of the collector (see Fig. 1). These terminals will need to be
wired to a suitable control panel for the type of fan motor supplied. This control
panel should be designed to comply with local legislation for electrical installations
(refer also to 'Interlocks' and 'Overload protection').
Details of standard fan motor supply voltage are given in Table 8 (refer
to 'Specification' section).
INSTALLATION
Figure 8 IPC (DR) Controller – cleanside and dirtyside tapping point connections
Upward loop to help
prevent dust ingress
Front elevation
(with access panel removed)
Side elevation
In-line filter
Dirtyside connection
Cleanside connection

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DCE 2000 Series Dust Collectors
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INSTALLATION
Interlocks
Discharge equipment such as belt feeders, rotary valve or screw conveyor should
be separately controlled but interlocked with the filter controller (see Fig. 9).
The design of the electrical circuitry controlling equipment associated with the
DCE 2000 Series dust collector should be such that breakdown of any one of
the associated pieces of equipment does not cause a complete blockage of the
unit. For example, should the motor of the rotary valve fitted to the unit cease
to function, the unit housing will gradually fill with dust until completely choked.
Failure of the compressor could also cause a similar blockage.
It is therefore important that the starters of all ancillary equipment be interlocked
to ensure:
1 Correct starting sequence;
2 Operation of a warning system, or alternatively stoppage of the entire
installation in the event of a failure of any of the auxiliary motors;
3 Correct stopping sequence.
Such interlocks are illustrated in Figure 9 which also allows for the compressor
etc. to operate without airflow through the unit, to facilitate clearance of the filter
in the event of blockage due to failure of non-electrical equipment.
It may be necessary to provide a facility to shut down the equipment in
the event of an explosion (where collectors are fitted with explosion relief
panels). The signal should be taken from the explosion relief detection
device.
Figure 9 Schematic diagram showing typical interlock system for a DCE 2000 dust collector installation
* For fans powered by 11 kW motors or above, collectors are connected for star delta starting as standard
L1
L2
L3
N
Start
N/O aux.
contact
O/L
Stop
Rotary valve(s) Conveyor Compressor Controller Fan*

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DCE 2000 Series Dust Collectors
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EEx controls
When the dust collector is to be installed in a hazardous area where there is any
risk of fire or explosion, the collector will be marked for the area(s) it can be safely
used within (refer to collector serial nameplate). The collector may be fitted with
either of the following control systems:
EExd solenoids and remote controller
When this option is fitted, the dust collector has its solenoid valves in an
EExd IIb T6 enclosure mounted directly to the unit. A controller, housed in
an IP66 box, is supplied loose. This must be installed in a safe area and
connected to the solenoid valves on the dust collector using suitable cabling
(not supplied).
It is recommended that cable with a core size of 2.5 mm² is used.
The maximum length of cabling that can be used is 100 m.
Instructions for setting up the controller are the same as those for the standard
controller.
PT Controller
The PT Controller is a pneumatically operated device which operates the
diaphragm valves in sequence, therefore the need for an electrical supply
is eliminated.
The controller is supplied complete with air regulator and is normally bracket-
mounted directly to the unit.
For PT Controller connections and set-up, refer to Publication 2697.
Antistatic earthing
It is particularly important on collectors having
antistatic features and/or explosion stiffening, that the
earthing post (located adjacent to the symbol, shown
opposite) is properly connected to earth, using the
brass screw provided, to prevent any static build-up
(refer also to Fig. 1).
Collectors with dust containers will have two
connection points, located on the collector
and the base.
INSTALLATION

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DCE 2000 Series Dust Collectors
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INSTALLATION
Explosion relief
Explosion panels, if fitted, must be relieved to a safe area in accordance
with local relevant recommendations. The explosion relief area is
suitable for the collector volume only. Fitment of the collector to larger
vessels will require additional explosion protection to be fitted to the
vessel. This protection should ensure that pressures developed during
an explosion are lower than the collector strength. Consult Donaldson
for specific collector design pressures. Refer to Table 2 for predicted
flame lengths during an explosion.
Refer to Publication 2713 for explosion relief assembly installation.
Installation check list 
Ensure the DCE 2000 Series filter section is securely bolted to the base
section and the fan section is securely bolted to the filter section.
Ensure the base section is securely bolted to the floor and, where applicable,
the dust container base panel is bolted in position.
Ensure compressed air supply is installed correctly and free from leaks.
Ensure electrical supply is installed correctly and complies to local legislation.
Ensure earthing straps are fitted on collectors supplied with antistatic filter
elements.
TABLE 2 – PREDICTED FLAME LENGTHS
(calculation based on VDI 3673)
Unit type: F2012 F2018 F2024 F2030 F2036 F2045
Flame length:
Top explosion relief 9.71 m 10.82 m 12.00 m 11.91 m 12.95 m 12.83 m
Rear explosion relief 12.14 m 13.53 m 15.00 m 14.89 m 16.18 m 16.03 m

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DCE 2000 Series Dust Collectors
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It is a requirement of the Supply of Machinery (Safety) Regulations 1992
to provide adequate isolation and emergency stop facilities. Due to the
varied nature of site installations this cannot be provided by Donaldson
but instead is the responsibility of the customer.
When making your preliminary checks, or during the start-up sequence,
particularly note that on collectors fitted with an explosion panel the
cleaning system should not be operated on its own for longer than
necessary as the positive pressure produced could weaken the Membrex
membrane.
Commissioning check list 
Ensure the DCE 2000 Series filter section is securely bolted to the base
section and the fan section is securely bolted to the filter section.
Ensure the base section is securely bolted to the floor and, where applicable,
the dust container base panel is bolted in position.
Ensure all ducting is complete and all detachable panels are in position.
Ensure collectors fitted with antistatic filter elements are suitably earthed.
Where fitted, ensure explosion relief panels are venting to a safe area.
Ensure the door seal is intact, then close and secure the door.
Ensure the controller is connected to the correct voltage and the pulse interval
and duration settings are correct. For 24V DC ensure polarity is correct. It
is essential that the controller is earthed for both AC and DC connections.
Ensure electric power is available.
Ensure the compressed air manifold has sufficient protection for over-
pressure.
Start the compressor and check that the air supply is maintained at the
recommended pressure.
If applicable, start up the discharge equipment (e.g. screw conveyor, rotary
valve, belt feeders etc.).
Switch on the controller and check all valves operate in sequence by ‘feeling’
pulses in rubber hoses (look and listen for exhaust pulses). As each valve
operates, the air pressure reading should drop to approximately 50% of the
initial setting and then return to the initial value.
Start up the main fan and check for correct rotation and that the full load
current is not exceeded (refer to fan rotation label located on rear panel of
fan section).
Verify operation of the interlocks and audible warning system if fitted.
If any of the above check boxes are not ticked, then the reasons why should be
investigated. (Refer to fault location table in ‘Maintenance’ section).
COMMISSIONING

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DCE 2000 Series Dust Collectors
20
COMMISSIONING
Start-up sequence
Having completed all the necessary checks, the equipment may be put into
operation. A typical installation, as shown in Figure 9, should be started up as
follows:
1 Start up compressed air supply.
2 Set the equipment being served, if applicable, in motion.
3 Switch on discharge equipment (if applicable).
4 Switch on controller.
5 Start main fan.
Shut-down sequence
At the end of any period of operation it is most important that all residual
deposits are cleared from the filter elements, casing, discharge hopper
and equipment being served. To achieve this, equipment should be
shut down in the following order:
1 Stop main fan only, leaving controller and compressed air supply switched
on to allow filter to be cleaned ‘off-line’.
To enable off-line cleaning, refer to controller manual.
This procedure is not recommended where explosion panels are
fitted, as damage could result to the Membrex membrane. In such
cases consult with Donaldson.
2 After 10-15 minutes, switch off controller and compressor but leave discharge
equipment running to ensure that it is emptied.
3 After a further 5 minutes, switch off the discharge equipment if applicable.
Where the dust being handled has self-heating properties, it is important
to remove any deposits in the dust container to reduce the risk of an
explosion.
Adherence to the above procedure will ensure that a DCE 2000 Series collector
installation is maintained at optimum efficiency.
On installations where the inlet duct is relatively short, this procedure
may result in a dust emission occurring at the inlet and therefore may
not be an appropriate procedure if the dust being handled is dangerous.
Therefore a Risk Assessment must be carried out to ensure the final
procedure is safe.