System air DKEX Series Fehlerbehebungshandbuch

Document in original language | 141815 · A002

Explosion proof fans

KTEX/DKEX – Presafe 17 ATEX 9970 X

Operation and Maintenance Instructions GB

141815 | A002

E&OE

Systemair AB reserves the rights to alter their products without notice.

This also applies to products already ordered, as long as it does not affect the previously agreed specifications.

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Contents

1 EU Declaration of conformity . .. .. ... .. .. .. .. .. ... .. .. .. .. ... .. 1

2 Safety information... .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. .. ... .. 2

2.1 Specific conditions for safe use (1-5) . ... .. .. .. .. .. .. 4

3 Transport and storage.. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. .. ... . 4

4 Technical data. .. .. .. ... .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. ... .. 5

4.1 Dimensions DKEX . ... .. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. . 5

4.2 Dimensions KTEX .. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. .. . 6

4.3 Wiring . .. .. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. ... .. .. .. .. .. 7

4.3.1 Cabling . .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. ... .. 7

4.3.2 Sample motor protection . .. .. .. ... .. .. .. .. . 7

4.3.3 Sample wiring . .. ... .. .. .. ... .. .. .. .. .. .. ... .. 7

5 Installation ... .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. ... .. .. .. .. .. .. . 8

5.1 Installation example . . . .. . .. . .. .. . .. . .. . .. . .. . .. .. . . .. .. 9

6 Checklist .. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. .. .. 10

7 Commissioning. .. .. . .. .. .. .. .. .. . . . .. .. .. .. .. .. . . . .. .. .. .. .. .. 10

8 Maintenance .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. . 11

9 Other .. .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. .. .. .. .. 12

9.1 Name plates DKEX. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .. . 13

9.2 Name plates KTEX . . .. .. .. .. .. .. . . . .. .. .. .. .. . . . .. .. .. 14

EU Declaration of conformity | 1

1 EU Declaration of conformity

Manufacturer

Systemair Sverige AB

Industrivägen 3

SE-739 30 Skinnskatteberg SWEDEN

Office: +46 222 440 00 Fax: +46 222 440 99

www.systemair.com

The manufacturer hereby declares that the following products:

Centrifugal fans DKEX/KTEX

EU-type Examination Certificate (ATEX) Presafe 17 ATEX 9970 X DNV Nemko Presafe AS (2460)

Quality Assurance Notification (ATEX) Presafe 16 ATEX 8871 Q DNV Nemko Presafe AS (2460)

(The declaration applies only to a product in the condition that it was delivered in and that was installed in the facility in

accordance with the included installation instructions. The insurance does not cover components that are added or ac-

tions carried out subsequently on the product).

Comply with all applicable requirements in the following directives:

• ATEX Directive 2014/34/EU

• Machinery Directive 2006/42/EC

• EMC Directive 2014/30/EU

The following harmonized standards are applied in applicable parts:

EN 60 079-0:2012/A11:2013 Explosive atmospheres — Part 0: Equipment - General requirements.

EN 60 079-7:2015 Explosive atmospheres — Part 7: Equipment protection by increased safety ''e''.

EN 14986:2007 Explosive atmospheres — Design of fans working in potentially explosive

atmospheres.

EN ISO 12100:2010 Safety of machinery - General principles for design - Risk assessment and risk

reduction.

EN 13857 Safety of machinery - Safety distances to prevent hazard zones being reached

by upper and lower limbs.

EN 61000-6-2 Electromagnetic compatibility (EMC) – part 6-2: Generic standards - Immunity for

industrial environments.

EN 61000-6-3 Electromagnetic compatibility (EMC) – part 6-3: Generic standards - emission

standard for residential, commercial and light-industrial environments.

Skinnskattberg 24–04–2017

Mats Sándor

Technical Director

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2| Safety information

2 Safety information

Danger

• Before maintenance, service or repair cut the power supply (all-pole breaker) and the impeller to stop.

• Mounted safety equipment must not be removed, bypassed or be disabled!

• Cleaning with a damp cloth when the fan is energized can cause electric shock!

• The fans may have sharp edges and corners, which can cause cutting injuries.

• Wear safety shoes and gloves for handling!

The installation instructions are part of the product and should be stored so that it is always available. The manufacturer

of the system or the plant is responsible for the installation and that safety instructions are compliant with the applica-

ble regulation.

DKEX/KTEX are certified according to ATEX Directive. Fan Category for fans is BV3 quality grade G6.3 according to ISO

14694. The field of explosion protection is stated on the fan rating plate (for example Exe IIB T3). The fan fulfils the re-

quirement for zone 1 but does not separate zones. Fan may be used in explosive environments for the transport of gas,

but not the transport of hot fumes.

The fans are designed for transport of air or explosive atmospheres in Zone 1 and Zone 2. Transport of solids, shares of

solids or mixtures of dust/air is not allowed. The transported air must not corrode the fan housing, fan blades or motor

(aluminium and steel). Rust particles may not occur in the airflow.

Resonance vibrations can occur due to mounted components and should be checked during commissioning.

The fans must not be installed outdoors.

Installation, electrical connection and commissioning may only be performed by qualified personnel and in accordance

with applicable requirements and regulations for electrical installations in areas with explosive atmospheres.

Installation, inspection and maintenance in accordance with EN 60079-14/-17 are considered to meet the require-

ments. Fan must be installed and protected against foreign objects that come in contact with moving parts and may

cause sparks.

No moving parts should be accessible after installation (EN ISO 13857).

Inspection and cleaning should be done regularly, cleaning of deposits will prevent imbalance of the impeller. The pan-

els that holds the fan can be relative heavy. Make sure that all the parts are correctly reassembled after inspection/

cleaning (see chapter 8).

Protective earth (PE) must be connected, the external ground wire connection is placed on the motor. Electrical connec-

tions must be made according to the wiring diagram. When the fan is controlled the current can increase at regulated

voltage, the power must never exceed the rated power, see table 1. Data provided on the rating plate applies to air with

density of 1.2 kg/m3.

Use of electronic or transformer based control devices is permitted. Motors are equipped with PTC resistors in triple ex-

ecution. More than two PTC resistor chains may not be connected in series, as this can lead to indefinite suspension.

Max. test voltage of PTC resistors are 2.5 V.

Inspection and maintenance of the temperature monitoring unit shall be made according to instructions and according

to a time interval specified in the certificate and instruction manual of the temperature monitoring device.

Motors are supplied with open drain holes.

Important

• DKEX/KTEX must be installed with an EX certified temperature monitoring unit.

• Speed control using frequency inverter is not permitted.

• Current dependent protection is not permitted and must not be used as secondary protection either.

• The fan current/power must not exceed the current/power specified on the fan rating plate at rated

voltage. By increasing the static back pressure the fan can be throttled up to a lower current/power if a

speed control is not in use.

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Safety information | 3

Table 1

Rated data Min. static back pressure (Pa)

Fan type Voltage/Frequency P

(kW)

A1rpm

min-max

Isol.

Class

Weight

Min. flow

m3/h

Max. flow

m3/h

Imax

Cntrl.(A) 1

1 2 3 4 5

KTEX 50-25-4

230V(Δ) 3~ 50Hz 0,5 1,52 500–1470 F 17,0 200 1800 1,64 0 0 0 40 110

380-400V(Y) 3~ 50Hz 0,5 0,88 500–1470 F 17,0 200 1800 0,95 0 0 0 40 110

KTEX 50-30-4

230V(Δ) 3~ 50Hz 0,9 3,1 470 - 1490 F 22,5 200 2560 3,27 0 0 0 0 40

380-415V(Y) 3~ 50Hz 0,9 1,8 470 - 1490 F 22,5 200 2560 1,9 0 0 0 0 40

KTEX 60-30-4

230V(Δ) 3~ 50Hz 1,3 3,9 415 - 1450 F 30,5 200 3150 4,35 0 0 30 105 250

380-415V(Y) 3~ 50Hz 1,3 2,25 415 - 1450 F 30,5 200 3150 2,5 0 0 30 105 250

KTEX 60-35-4

230V(Δ) 3~ 50Hz 2,1 6,8 590 - 1480 F 35,5 200 3750 8,0 0 0 0 0 225

380-415V(Y) 3~ 50Hz 2,1 3,9 590 - 1480 F 35,5 200 3750 4,6 0 0 0 0 225

KTEX 70-40-6

230V(Δ) 3~ 50Hz 1,6 6,2 330 - 985 F 48 200 5100 6,5 0 0 0 0 0

380-415V(Y) 3~ 50Hz 1,6 3,6 330 - 985 F 48 200 5100 3,76 0 0 0 0 0

DKEX 225-4

230V(Δ) 3~ 50Hz 0,5 1,52 490 - 1470 F 13,0 200 1800 1,64 0 0 0 55 125

380-400V(Y) 3~ 50Hz 0,5 0,88 490 - 1470 F 13,0 200 1800 0,95 0 0 0 55 125

DKEX 250-4

230V(Δ) 3~ 50Hz 0,9 3,1 460 - 1470 F 17 200 2600 3,27 0 0 0 10 60

380-415V(Y) 3~ 50Hz 0,9 1,8 460 - 1470 F 17 200 2600 1,9 0 0 0 10 60

DKEX 280-4

230V(Δ) 3~ 50Hz 1,3 3,9 390 - 1475 F 24 200 3150 4,35 0 0 45 155 300

380-415V(Y) 3~ 50Hz 1,3 2,25 390 - 1475 F 24 200 3150 2,5 0 0 45 155 300

DKEX 315-4

230V(Δ) 3~ 50Hz 2,1 6,8 555 - 1495 F 35,5 200 3850 8,0 0 0 15 40 300

380-415V(Y) 3~ 50Hz 2,1 3,9 555 - 1495 F 35,5 200 3850 4,6 0 0 15 40 300

DKEX 355-6

230V(Δ) 3~ 50Hz 1,8 6,5 310 - 980 F 39 200 5300 6,5 0 0 0 0 0

380-415V(Y) 3~ 50Hz 1,8 3,76 310 - 980 F 39 200 5300 3,76 0 0 0 0 0

Step 1 2 3 4 5

Voltages 230V 1~ 80V 105V 130V 160V 230V

Voltages 400V (Y) 3~ 95V 145V 190V 240V 400V

Voltages 230V 3~(Δ) 55V 85V 110V 140V 230V

1The current may only exceed the rated currents on the rating plate by the ratio (%) given as long as the total power consumption does not exceed the rated power given.

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4| Transport and storage

2.1 Specific conditions for safe use (1-5)

1. The fan’s rating plate displays the fan’s data at rated voltage. In order for the fan’s permitted current and power con-

sumption not to be exceeded the fan may need to be pressurised with a minimum back pressure according to table

2. PTC protective circuits in the motors must be connected to monitoring apparatus certified according to ATEX Directive

that isolates the motor from voltage supply immediately when activated.

3. When fans are installed in a duct system, the duct system must meet enclosure classes IP20 at the inlet and outlet.

Components that contribute to the enclosure protection must be of suitable material and durability.

4. Fans are only intended for fixed installation. The motors’ connection cable on KTEX is secured with cable ties in order

to guide the cable correctly in relation to the hinge on the hatch. Attachment must be carried out so that the cable

can still be extended after fixing without the cable insulation being damaged.

5. Ambient temperature and temperature of transported air should remain within the range –20 to +40 °C. Fans must

not be run at flows below 200 m3/h at ambient temperature of 20 °C. There is otherwise a risk that the exhaust tem-

peratures are higher than the permitted ambient temperature.

Table 2 Table rating and ambient temperature

Model Phase Supply voltage Tamb

KTEX 50-25-4

230V (Δ) AC 50Hz

–20°C to +40°C

DKEX 225-4 380-400V (Y) AC 50Hz

KTEX 50-30-4—KTEX 70-40-6 230V (Δ) AC 50Hz

DKEX 250-4—DKEX 355-6 380-415V (Y) AC 50Hz

3 Transport and storage

The fan is packed at the factory to withstand normal handling during transit. Avoid blows and shock loads. Store the fan

in a dry, dust-free place without damaging vibrations (v eff <0.2 mm/s) to avoid bearing damage. Avoid long storage

periods (we recommend max.1 year). Before installing the fan, check the motor bearings for noise (spin the impeller

carefully by hand).

Caution

• When handling the goods, use suitable lifting equipment in order to avoid damage to fans and personnel.

• Do not lift the fan in any cable, junction box or the impeller.

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Technical data | 5

4 Technical data

4.1 Dimensions DKEX

Model A B C D E F G I 1

DKEX 225 280 133 145 196 196 367 445 337

DKEX 250 315 154 165 216 243 410 492 375

DKEX 280 357 169 180 230 248 453 547 413

DKEX 315 400 188 203 254 276 515 615 465

DKEX 355 450 213 227 278 320 574 689 489

1Minimum dimensions to remove the motor out of casing

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6| Technical data

4.2 Dimensions KTEX

H 1

8.0

ø10.0 (8x)

I 2

Model A B C D E F G H 1I2

KTEX 50–25 498 248 270 520 540 290 532 34,5 610

KTEX 50–30 498 298 320 520 540 340 562 34,5 695

KTEX 60–30 598 298 320 620 640 340 642 52 715

KTEX 60–35 598 348 370 620 640 390 717 54,5 805

KTEX 70–40 698 398 420 720 740 440 787 50 900

1Dimensions from the motor bolts

2Dimensions with fully opened hatch

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