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Keller USA, Inc.54 Great Hill Road, P.O. Box 546Naugatuck, CT 06770 USAPhone (203) 729-0145 . Fax (203) 729-0148E-mail: info@kellerusa.comwww.kellerusa.com
REFERENCE INSTALLATIONS
AIR FILTRATIONSYSTEM SOLUTIONS
AIR FILTRATIONSYSTEM SOLUTIONS
VARIO – SEPARATION OF FINE DUST PARTICLES
THE TASK
Keller plans, engineers, and manufactures air pollution controlsystems for the capture, removal and separation of airborneparticles for all types of industry. High filtration efficiency isachieved with the use of innovative filtration technology andefficient design. Suitable exhaust systems offer solutions toindividual problems at high levels of quality.
The VARIO series is particularly suitable for the separation offine dust. Nearly all types of dust can be successfully separated, such as those created in metal processing, polymerprocessing, and in chemical, pharmaceutical and ceramic industries, as well as non-metallic minerals.
The VARIO units are modular construction in order to meetdifferent requirements, such as dust characteristics or thevolume of exhausted air. Sturdy and low-noise units allow forreliable 24-hr. operation with constant air flow. Short deliverytimes and competitive pricing are possible because of seriesproduction planning.
SCOPE OF APPLICATIONS
Machining processes: – lathing, drilling, milling, grinding– removing bulk waste– blending, fusing– measuring– manufacturingThermal processes: – laser cutting/etching– welding
VARIO 6.2, durable, heavy-duty assembly
VARIO 6, for welding fume exhaust
2
ADVANTAGES– high-quality filter element
– compact construction
– large filter area
– low filter resistance
– integrated sound insulation
OPERATION
The dust-laden air flows through the dirty air inlet into the filter unit. A baffle plate slows down and deflects the dustparticles to protect the filter elements from direct impact. Anair down-flow is created between the filter elements, allowingthe dust particles to drop. A fan in the clean air chamberdraws the polluted air through the filter elements, depositingthe dust particles onto the filter surface. Because the filterelements are cleaned continuously by compressed air pulsesduring operation, the air flow remains constant. The cleanedair exits through the top of the unit and in most cases can bere-circulated into the work area or vented outdoors. The separated dust falls into the dust collector containers.
FILTER ELEMENTS
The SINBRAN filter elements, a combination of sintered polyethylene and laminated GORETM-membran, combine theadvantage of membrane filtration (low pressure loss with highfiltration efficiency) with a long-life rigid frame construction.These elements are reusable, have “BGIA” test certificationaccording to DIN EN 6035-2-69 Appendix AA (08/99) and meetthe requirements of dust class "M", formerly known as categories U, S, G and C. Alternative filter elements such ascartridge filters, multitube and Y-filters are also available.
CLEANING THE FILTER ELEMENTS
The pulse cleaning cycle can be adjusted for each applicationby means of an integrated control unit. The air flow of the fanremains nearly constant. The cleaning operation is activatedeither by a differential pressure regulator while in operation,or by a programmable downtime cleaning cycle.
WASTE DISPOSAL
The air-tight and dust-tight disposal bins are connected to thefilter's hopper with a clamping device, simplifying the exchange of dust collector containers.
The reusable bins can be directly discharged with the use of aclosed lid and clamping ring. For large dust quantities orduring 24-hour operation, continuous disposal is accomplishedby means of an air lock.
VARIO 2, exhaust system for dust created by grinding and polishing processes
accessories
114
64
116
110
120
115
50
104
ACCESSORIES FOR VARIO UNITS
Access.ref. Designation Description
50 Connecting elbow to connect ductwork for dirty air and clean air openings
64 Compressed air regulator integrated oil and condensation separator with automatic drain and pressure reducer bymanometer
104 Injector device IN compressed air operated suction vacuum to keep the workstation tidy as well as clean thework pieces and machines. Connected to the separator (please request the special information sheet)
110 Additional silencer to reduce the noise level by about 5 dB(A)
114 Shed with sound-insulating lining
for outdoor installation. Reduces the discharge noise by about 4 dB(A).
115 Vibration damper four rubber-metal elements for the substructure, to prevent the transfer of vibrations to buildings or foundations
116 Stepladder with railing facilitates inspection and maintenance work
120 Electrical differentialpressure measuring gauge
steady measurement of filter resistance and triggers the compressed air pulses to clean thefilter elements as needed (when the resistance exceeds the preset limit value)
11
14
12
68
16
11
15
12
13
9
3
4
FEATURES OF THE VARIO P 4
Unit type VARIO P4-10 VARIO P4-12
filter elements cartridge 327/985 327/985amount pcs. 10 12
motor1) output kW 15,0 18,5valves2) amount pcs. 5 6compressed air3) consumption L/min 19 19sound level4) dB(A) 76 76weights standard unit kg 1900 1980
model A kg 1640 1720model Z/F kg 1890 2070
subject to modifications1) Voltage 400 Volt/50 Hz, speed 3000 min -1.2) Nominal width 2”, voltage 24 Volt DC.3) Nominal pressure 4 - 5 bar. Consumption litre in normal
conditions if the pulse pause between the pulses is 250 - 400 s. These are estimated values and can differ depending on dust quantity and quality.
4) Measured in 1 m distance in front of the unit (door). Measured according to DIN EN ISO 3744, freefield conditions.
DIAGRAM AND DESCRIPTION OF VARIO P 4 - 6
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 clamping mechanism for disposal bin5 waste disposal bin6 jet piping to clean the filter elements7 compressed air connection for VARIO P 4 - 6
with 1" nozzle 8 compressed air tank9 diaphragm valves; electromagnetic10 terminal box11 clean air outlet; pipe connection possible12 support frame13 hopper14 filter housing without waste disposal device15 motor with three built-in temperature probes
(for motor protection)16 radial fan
103
VENTING OUTDOORS OR RE-CIRCULATION
Air recirculation is often possible with the use of high-qualitySINBRAN filter elements. The cleaned air can be ducted andchanneled (even with heat exchangers) to the outdoors, or re-circulated back into the workplace. Alternate venting orrecirculation can be accomplished by activating a switch within the exhaust duct.
We will be pleased to furnish you with detailed informationregarding the feasibility of a recirculation system, ensuringcompliance with your local rules and regulations.
PLACEMENT
The VARIO filter unit is meant for indoor use, adjacent to thedevice to be exhausted. Outdoor installation is possible, provided certain protective measures are adopted.
SAFETY
The VARIO filter unit can be equipped with additional safetyprecautions when processing combustible or explosive dusts.
FAN SECTION
The direct-drive radial fan is very silent. Depending on thesize of the filter unit, the fan is either integrated, top-mountedor placed next to it.
Two VARIO 6; exhaust systems for dust created by spring steel grinding processes
VARIO 3
VARIO 4
4
The VARIO is available in different sizes and designs.Calculating the air flow to be exhausted (m³/hr) is essential forselecting the right unit.Different variations are available.
VARIO UNIT TYPES
2630
1125
700 602
412
Ø 315
Ø 25080
0
1000
1855
3655
700
3655
1150
675
780Ø 560
Ø 500
1540
1100
1350
1350
3860
1100
2760
4960
700
4960
1150
900
2630
1235
1050
1350
Ø 400
Ø 450
515
2300
4555
700
4555
1150
VARIO 2, basic unit and variations A, Z, F
VARIO 1, basic unit and variations A, Z, F
VARIO 3, basic unit and variations A, Z, F
1420x470
1510
560
3080
1540
1300
1800
3490
1420x470
560
3410
700
3080
1800
1540
5390
2190
3200
VARIO 6 basic unit H VARIO 6 variation Z-H
Unit type VARIO 4 VARIO 5 VARIO 64.1 4.2 4.3 5.1-H 5.2-H 6.1-H 6.2-H 6.3-H
filter elements SINBRAN, Multitube, Y-Filter 1500/18 1500/ 18 1500/ 18amount pcs. 16 18 20 24 28 32 36 40
motor1) output kW 15 18,5 22,0 - - - - -valves2) amount pcs. 8 9 10 12 14 16 18 20compressed air3) consumption l/min 250 350 500sound level4) dB(A) 76 - -weights standard unit kg 1830 1980 2120 2340 2420 3040 3110 3190
model A kg 1570 1720 1860 - - - - -model Z-H (F-H) kg 1920 2070 2210 2350 2430 3050 3160 3200
subject to modifications
9
VARIO 4 variation Z with top mounted fan
5450
400
2190
2410
4600
1540
700
1540
710
261040
0
710
1540
2190
1300
1420x470
400
710
1540
2190
1300
VARIO 4 basic unit
COMPACT DESIGN, HIGH FILTRATION EFFICIENCY - SERIES VARIO 4 - 6
2400
1540
470
1260
1540
1040
3300
1420x470
VARIO 5 basic unit H VARIO 5 variation Z-H
5260
2260
3000
2400
700
1540
1420x470
1420
3220
470
VARIO 4 basic unit with top mounted fan
8 5
FEATURES OF THE VARIO 1 - 3
VARIO 1-3
VARIO 1-3 series
DIAGRAM AND DESCRIPTION OF VARIO 1 - 3
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 waste disposal bin5 clamping mechanism for disposal bin6 jet piping to clean the filter elements7 suction nozzle8 fan impeller; directly coupled with the motor9 radial fan10 compressed air tank11 diaphragm valves; electromagnetic12 motor with three built-in temperature probes
(for motor protection)13 sound-absorbing lining14 compressed air connection for VARIO 1 - 3 with ½" fitting15 clean air outlet; pipe connection possible 16 door to access the filter housing17 electrical switch control cabinet or terminal box18 safety device against fall19 filter housing without waste disposal device20 connecting frame21 rotary valve22 support frame23 hopper24 electrical connection
14
11
10
6
3
4
5
15
1213
987
1
2
15
16
4
17
1819, 20
17
21
14, 24
23
22
Unit Type VARIO 1 VARIO 2 VARIO 31.1 1.2 1.3 2.1 2.2 2.3 3.2 3.3
filter elements SINBRAN, multitube, Y-Filter 900/ 12 1200/ 18 1500/ 18amount pcs. 4 6 8 8 10 12 12 14
motor1) output kW 3,3 3,3 3,3 5,5 7,5 11,0 12,5 15,0valves2) amount pcs. 2 3 4 4 5 6 6 7compressed air3) consumption l/min 20 30 40sound level4) dB(A) 72 75 75weights basic unit kg 640 660 680 1040 1070 1110 1660 1700
variation A kg 550 570 590 870 890 910 1390 1430variation Z/F kg 650 670 690 1050 1080 1120 1670 1710
1) voltage 400 V/50 Hz; speed 3000 r.p.m.2) nominal width 2 inches; 24 Volt DC3) nominal pressure 6 bar; consumption in litres under normal operating conditions,
if the pause between pulses is 3 minutes
4) measured at a distance of 1 m from the unit (door); measured according to DIN EN ISO 3744, field conditions
subject to modifications
6
DIAGRAM AND DESCRIPTION VARIO P 1 - 3
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 waste disposal bin5 clamping mechanism for disposal bin6 jet piping to clean the filter elements7 suction nozzle8 fan impeller; directly coupled with the motor9 radial fan10 compressed air tank11 diaphragm valves; electromagnetic12 motor with three built-in temperature probes
(for motor protection)13 sound-absorbing lining14 compressed air connection for VARIO 1 - 3 with ½" fitting15 clean air outlet; pipe connection possible
VARIO P 1 - 3 FEATURES
Unit type VARIO P1 VARIO P2 VARIO P3
filter elements cartridge 327/600 327/985 327/985amount pcs. 4 6 8
motor1) output kW 3,3 7,5 12,5valves2) amount pcs. 2 3 4compressed air3) consumption L/min 6 9 12sound level4) dB(A) 72 75 75weights basic unit kg 680 1110 1700
variation A kg 550 870 1390variation Z/F kg 650 1050 1670
1) Voltage 400 Volt/50 Hz, speed 3000 min -1.2) Nominal width 2”, voltage 24 Volt DC.3) Nominal pressure 4 - 5 bar. Consumption litre in normal
conditions if the pulse pause between the pulses is 250 - 400 s. These are estimated values and can differ depending on dust quantity and quality.
4) Measured in 1 m distance in front of the unit (door). Measured according to DIN EN ISO 3744, freefield conditions.
subject to modifiations
7
DIAGRAM AND DESCRIPTION OF VARIO 4 - 6
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 clamping mechanism for disposal bin5 waste disposal bin6 jet piping to clean the filter elements7 compressed air connection for VARIO 4 - 6 with 1" nozzle 8 compressed air tank9 diaphragm valves; electromagnetic10 terminal box11 clean air outlet; pipe connection possible12 support frame13 hopper14 filter housing without waste disposal device15 motor with three built-in temperature probes
(for motor protection)16 radial fan
9
87
3
4
5
10
11
6
12
12
VARIO 4-6 variation H
11
16
15
10
6
12
13
12
8
7
14
VARIO 4-6 with top mounted fan
COMPACT DESIGN, HIGH FILTRATION EFFICIENCY - SERIES VARIO 4 - 6
1) voltage 400 V/50 Hz; speed 3000 r.p.m.2) nominal width 2 inches; 24 Volt DC3) nominal pressure 6 bar; consumption in litres under normal
operating conditions, if the pause between pulses is 30 seconds4) measured at a distance of 1 m from the unit (door); with
connected suction and discharge ductworks, measured accordingto DIN EN ISO 3744, field conditions.
Unit type VARIO 4 VARIO 5 VARIO 64.1 4.2 4.3 5.1-H 5.2-H 6.1-H 6.2-H 6.3-H
filter elements SINBRAN, Multitube, Y-Filter 1500/18 1500/ 18 1500/ 18amount pcs. 16 18 20 24 28 32 36 40
motor1) output kW 15 18,5 22,0 - - - - -valves2) amount pcs. 8 9 10 12 14 16 18 20compressed air3) consumption l/min 250 350 500sound level4) dB(A) 76 - -weights standard unit kg 1830 1980 2120 2340 2420 3040 3110 3190
model A kg 1570 1720 1860 - - - - -model Z-H (F-H) kg 1920 2070 2210 2350 2430 3050 3160 3200
subject to modifications
6
DIAGRAM AND DESCRIPTION VARIO P 1 - 3
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 waste disposal bin5 clamping mechanism for disposal bin6 jet piping to clean the filter elements7 suction nozzle8 fan impeller; directly coupled with the motor9 radial fan10 compressed air tank11 diaphragm valves; electromagnetic12 motor with three built-in temperature probes
(for motor protection)13 sound-absorbing lining14 compressed air connection for VARIO 1 - 3 with ½" fitting15 clean air outlet; pipe connection possible
VARIO P 1 - 3 FEATURES
Unit type VARIO P1 VARIO P2 VARIO P3
filter elements cartridge 327/600 327/985 327/985amount pcs. 4 6 8
motor1) output kW 3,3 7,5 12,5valves2) amount pcs. 2 3 4compressed air3) consumption L/min 6 9 12sound level4) dB(A) 72 75 75weights basic unit kg 680 1110 1700
variation A kg 550 870 1390variation Z/F kg 650 1050 1670
1) Voltage 400 Volt/50 Hz, speed 3000 min -1.2) Nominal width 2”, voltage 24 Volt DC.3) Nominal pressure 4 - 5 bar. Consumption litre in normal
conditions if the pulse pause between the pulses is 250 - 400 s. These are estimated values and can differ depending on dust quantity and quality.
4) Measured in 1 m distance in front of the unit (door). Measured according to DIN EN ISO 3744, freefield conditions.
subject to modifiations
7
DIAGRAM AND DESCRIPTION OF VARIO 4 - 6
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 clamping mechanism for disposal bin5 waste disposal bin6 jet piping to clean the filter elements7 compressed air connection for VARIO 4 - 6 with 1" nozzle 8 compressed air tank9 diaphragm valves; electromagnetic10 terminal box11 clean air outlet; pipe connection possible12 support frame13 hopper14 filter housing without waste disposal device15 motor with three built-in temperature probes
(for motor protection)16 radial fan
9
87
3
4
5
10
11
6
12
12
VARIO 4-6 variation H
11
16
15
10
6
12
13
12
8
7
14
VARIO 4-6 with top mounted fan
COMPACT DESIGN, HIGH FILTRATION EFFICIENCY - SERIES VARIO 4 - 6
1) voltage 400 V/50 Hz; speed 3000 r.p.m.2) nominal width 2 inches; 24 Volt DC3) nominal pressure 6 bar; consumption in litres under normal
operating conditions, if the pause between pulses is 30 seconds4) measured at a distance of 1 m from the unit (door); with
connected suction and discharge ductworks, measured accordingto DIN EN ISO 3744, field conditions.
Unit type VARIO 4 VARIO 5 VARIO 64.1 4.2 4.3 5.1-H 5.2-H 6.1-H 6.2-H 6.3-H
filter elements SINBRAN, Multitube, Y-Filter 1500/18 1500/ 18 1500/ 18amount pcs. 16 18 20 24 28 32 36 40
motor1) output kW 15 18,5 22,0 - - - - -valves2) amount pcs. 8 9 10 12 14 16 18 20compressed air3) consumption l/min 250 350 500sound level4) dB(A) 76 - -weights standard unit kg 1830 1980 2120 2340 2420 3040 3110 3190
model A kg 1570 1720 1860 - - - - -model Z-H (F-H) kg 1920 2070 2210 2350 2430 3050 3160 3200
subject to modifications
VARIO 4 variation Z with top mounted fan
5450
400
2190
2410
4600
1540
700
1540
710
261040
0
710
1540
2190
1300
1420x470
400
710
1540
2190
1300
VARIO 4 basic unit
COMPACT DESIGN, HIGH FILTRATION EFFICIENCY - SERIES VARIO 4 - 6
2400
1540
470
1260
1540
1040
3300
1420x470
VARIO 5 basic unit H VARIO 5 variation Z-H
5260
2260
3000
2400
700
1540
1420x470
1420
3220
470
VARIO 4 basic unit with top mounted fan
8 5
FEATURES OF THE VARIO 1 - 3
VARIO 1-3
VARIO 1-3 series
DIAGRAM AND DESCRIPTION OF VARIO 1 - 3
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 waste disposal bin5 clamping mechanism for disposal bin6 jet piping to clean the filter elements7 suction nozzle8 fan impeller; directly coupled with the motor9 radial fan10 compressed air tank11 diaphragm valves; electromagnetic12 motor with three built-in temperature probes
(for motor protection)13 sound-absorbing lining14 compressed air connection for VARIO 1 - 3 with ½" fitting15 clean air outlet; pipe connection possible 16 door to access the filter housing17 electrical switch control cabinet or terminal box18 safety device against fall19 filter housing without waste disposal device20 connecting frame21 rotary valve22 support frame23 hopper24 electrical connection
14
11
10
6
3
4
5
15
1213
987
1
2
15
16
4
17
1819, 20
17
21
14, 24
23
22
Unit Type VARIO 1 VARIO 2 VARIO 31.1 1.2 1.3 2.1 2.2 2.3 3.2 3.3
filter elements SINBRAN, multitube, Y-Filter 900/ 12 1200/ 18 1500/ 18amount pcs. 4 6 8 8 10 12 12 14
motor1) output kW 3,3 3,3 3,3 5,5 7,5 11,0 12,5 15,0valves2) amount pcs. 2 3 4 4 5 6 6 7compressed air3) consumption l/min 20 30 40sound level4) dB(A) 72 75 75weights basic unit kg 640 660 680 1040 1070 1110 1660 1700
variation A kg 550 570 590 870 890 910 1390 1430variation Z/F kg 650 670 690 1050 1080 1120 1670 1710
1) voltage 400 V/50 Hz; speed 3000 r.p.m.2) nominal width 2 inches; 24 Volt DC3) nominal pressure 6 bar; consumption in litres under normal operating conditions,
if the pause between pulses is 3 minutes
4) measured at a distance of 1 m from the unit (door); measured according to DIN EN ISO 3744, field conditions
subject to modifications
4
The VARIO is available in different sizes and designs.Calculating the air flow to be exhausted (m³/hr) is essential forselecting the right unit.Different variations are available.
VARIO UNIT TYPES
2630
1125
700 602
412
Ø 315
Ø 250
800
1000
1855
3655
700
3655
1150
675
780Ø 560
Ø 500
1540
1100
1350
1350
3860
1100
2760
4960
700
4960
1150
900
2630
1235
1050
1350
Ø 400
Ø 450
515
2300
4555
700
4555
1150
VARIO 2, basic unit and variations A, Z, F
VARIO 1, basic unit and variations A, Z, F
VARIO 3, basic unit and variations A, Z, F
1420x47015
1056
0
3080
1540
1300
1800
3490
1420x470
560
3410
700
3080
1800
1540
5390
2190
3200
VARIO 6 basic unit H VARIO 6 variation Z-H
Unit type VARIO 4 VARIO 5 VARIO 64.1 4.2 4.3 5.1-H 5.2-H 6.1-H 6.2-H 6.3-H
filter elements SINBRAN, Multitube, Y-Filter 1500/18 1500/ 18 1500/ 18amount pcs. 16 18 20 24 28 32 36 40
motor1) output kW 15 18,5 22,0 - - - - -valves2) amount pcs. 8 9 10 12 14 16 18 20compressed air3) consumption l/min 250 350 500sound level4) dB(A) 76 - -weights standard unit kg 1830 1980 2120 2340 2420 3040 3110 3190
model A kg 1570 1720 1860 - - - - -model Z-H (F-H) kg 1920 2070 2210 2350 2430 3050 3160 3200
subject to modifications
9
14
12
68
16
11
15
12
13
9
3
4
FEATURES OF THE VARIO P 4
Unit type VARIO P4-10 VARIO P4-12
filter elements cartridge 327/985 327/985amount pcs. 10 12
motor1) output kW 15,0 18,5valves2) amount pcs. 5 6compressed air3) consumption L/min 19 19sound level4) dB(A) 76 76weights standard unit kg 1900 1980
model A kg 1640 1720model Z/F kg 1890 2070
subject to modifications1) Voltage 400 Volt/50 Hz, speed 3000 min -1.2) Nominal width 2”, voltage 24 Volt DC.3) Nominal pressure 4 - 5 bar. Consumption litre in normal
conditions if the pulse pause between the pulses is 250 - 400 s. These are estimated values and can differ depending on dust quantity and quality.
4) Measured in 1 m distance in front of the unit (door). Measured according to DIN EN ISO 3744, freefield conditions.
DIAGRAM AND DESCRIPTION OF VARIO P 4 - 6
1 dirty air inlet; on optional sides of the unit2 baffle plate; at the dirty air inlet3 filter elements4 clamping mechanism for disposal bin5 waste disposal bin6 jet piping to clean the filter elements7 compressed air connection for VARIO P 4 - 6
with 1" nozzle 8 compressed air tank9 diaphragm valves; electromagnetic10 terminal box11 clean air outlet; pipe connection possible12 support frame13 hopper14 filter housing without waste disposal device15 motor with three built-in temperature probes
(for motor protection)16 radial fan
103
VENTING OUTDOORS OR RE-CIRCULATION
Air recirculation is often possible with the use of high-qualitySINBRAN filter elements. The cleaned air can be ducted andchanneled (even with heat exchangers) to the outdoors, or re-circulated back into the workplace. Alternate venting orrecirculation can be accomplished by activating a switch within the exhaust duct.
We will be pleased to furnish you with detailed informationregarding the feasibility of a recirculation system, ensuringcompliance with your local rules and regulations.
PLACEMENT
The VARIO filter unit is meant for indoor use, adjacent to thedevice to be exhausted. Outdoor installation is possible, provided certain protective measures are adopted.
SAFETY
The VARIO filter unit can be equipped with additional safetyprecautions when processing combustible or explosive dusts.
FAN SECTION
The direct-drive radial fan is very silent. Depending on thesize of the filter unit, the fan is either integrated, top-mountedor placed next to it.
Two VARIO 6; exhaust systems for dust created by spring steel grinding processes
VARIO 3
VARIO 4
2
ADVANTAGES– high-quality filter element
– compact construction
– large filter area
– low filter resistance
– integrated sound insulation
OPERATION
The dust-laden air flows through the dirty air inlet into the filter unit. A baffle plate slows down and deflects the dustparticles to protect the filter elements from direct impact. Anair down-flow is created between the filter elements, allowingthe dust particles to drop. A fan in the clean air chamberdraws the polluted air through the filter elements, depositingthe dust particles onto the filter surface. Because the filterelements are cleaned continuously by compressed air pulsesduring operation, the air flow remains constant. The cleanedair exits through the top of the unit and in most cases can bere-circulated into the work area or vented outdoors. The separated dust falls into the dust collector containers.
FILTER ELEMENTS
The SINBRAN filter elements, a combination of sintered polyethylene and laminated GORETM-membran, combine theadvantage of membrane filtration (low pressure loss with highfiltration efficiency) with a long-life rigid frame construction.These elements are reusable, have “BGIA” test certificationaccording to DIN EN 6035-2-69 Appendix AA (08/99) and meetthe requirements of dust class "M", formerly known as categories U, S, G and C. Alternative filter elements such ascartridge filters, multitube and Y-filters are also available.
CLEANING THE FILTER ELEMENTS
The pulse cleaning cycle can be adjusted for each applicationby means of an integrated control unit. The air flow of the fanremains nearly constant. The cleaning operation is activatedeither by a differential pressure regulator while in operation,or by a programmable downtime cleaning cycle.
WASTE DISPOSAL
The air-tight and dust-tight disposal bins are connected to thefilter's hopper with a clamping device, simplifying the exchange of dust collector containers.
The reusable bins can be directly discharged with the use of aclosed lid and clamping ring. For large dust quantities orduring 24-hour operation, continuous disposal is accomplishedby means of an air lock.
VARIO 2, exhaust system for dust created by grinding and polishing processes
accessories
114
64
116
110
120
115
50
104
ACCESSORIES FOR VARIO UNITS
Access.ref. Designation Description
50 Connecting elbow to connect ductwork for dirty air and clean air openings
64 Compressed air regulator integrated oil and condensation separator with automatic drain and pressure reducer bymanometer
104 Injector device IN compressed air operated suction vacuum to keep the workstation tidy as well as clean thework pieces and machines. Connected to the separator (please request the special information sheet)
110 Additional silencer to reduce the noise level by about 5 dB(A)
114 Shed with sound-insulating lining
for outdoor installation. Reduces the discharge noise by about 4 dB(A).
115 Vibration damper four rubber-metal elements for the substructure, to prevent the transfer of vibrations to buildings or foundations
116 Stepladder with railing facilitates inspection and maintenance work
120 Electrical differentialpressure measuring gauge
steady measurement of filter resistance and triggers the compressed air pulses to clean thefilter elements as needed (when the resistance exceeds the preset limit value)
11
Keller USA, Inc.54 Great Hill Road, P.O. Box 546Naugatuck, CT 06770 USAPhone (203) 729-0145 . Fax (203) 729-0148E-mail: info@kellerusa.comwww.kellerusa.com
REFERENCE INSTALLATIONS
AIR FILTRATIONSYSTEM SOLUTIONS
AIR FILTRATIONSYSTEM SOLUTIONS
VARIO – SEPARATION OF FINE DUST PARTICLES
THE TASK
Keller plans, engineers, and manufactures air pollution controlsystems for the capture, removal and separation of airborneparticles for all types of industry. High filtration efficiency isachieved with the use of innovative filtration technology andefficient design. Suitable exhaust systems offer solutions toindividual problems at high levels of quality.
The VARIO series is particularly suitable for the separation offine dust. Nearly all types of dust can be successfully separated, such as those created in metal processing, polymerprocessing, and in chemical, pharmaceutical and ceramic industries, as well as non-metallic minerals.
The VARIO units are of modular construction in order to meetdifferent requirements, such as dust characteristics or thevolume of exhausted air. Sturdy and low-noise units allow forreliable 24-hr. operation with constant air flow. Short deliverytimes and competitive pricing are possible because of seriesproduction planning.
SCOPE OF APPLICATIONS
Machining processes: – lathing, drilling, milling, grinding– removing bulk waste– blending, fusing– measuring– manufacturingThermal processes: – laser cutting/etching– welding
VARIO 6.2, durable, heavy-duty assembly
VARIO 6, for welding fume exhaust
Recommended