Eclipse Gas System

8/6/2019 Eclipse Gas System

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Eclipse Gas Burners

Hands-on Training



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© Metso Paper, Inc.

2005 2

Burner Flow sheet



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2005 3

PowerDry Compact Station 1Flow sheet



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2005 4

PowerDry principle drawing



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Eclipse Gas Burners, Main

components



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2005 6

Burner control



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2005 7

Manual valve AKT

• Any installation position

• Low torque design for ease of actionby means of Teflon seals

•EC type-tested and certified



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2005 8

Pressure gauge KFM, for gas pressure

• Pressure gauges and manual cocks aremaintenance-free.

• An annual function check with verificationof the displayed pressure is recommended.



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2005 9

DUNGSGas and air filter

Housing aluminium cast

Seals NBR

Random laid nonwoven fabric PP

Support frame Stainless steel

Maximum operating pressure 4,0 bar

Maximum recommended pressure

difference: 10 mbar



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2005 10

Solenoid valve MVD

1 Hausing

2 Sieve

3 Valveplate

4 Closing spring

5 Armature

6 Solenoid coil

7 Electrical connection

8 Setting



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2005 11

Adjusting cock GEHV(for pilot flame)

• Threaded manual valve made of brass

with internal threads to DIN 2999 on both ends

• For adjusting the flow rate of natural gas, towngas, LPG and air

• Precise adjustment with hand wheel, scale andposition indicator

• Temperature range:

for gas: -10 to +60°C

for air: -10 to 150°C

• Inlet pressure pe:

for gas: max. 1 bar

for air: max. 4 bar .



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2005 12

DUNGS douple solenoid valve 1/4

• Solenoid valves with a design pressure of up to 500 mbar as per DIN EN 161 Class AGroup 2

• Precision outlet pressure adjustment

• Servo pressure control unit as per DIN EN

88 Class A Group 2• Outlet pressure: 2 - 300 mbar

• External pulse lines for optimal outletpressure stability or pulse flange

• Flange connections with pipe threads toISO 7/1 or NPT

• Easy assembly

• Low weight



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2005 13

Functional description Gas flow 2/4

1. If valves V1 and V2 are closed,

chamber (a) is subjected to inlet

pressure up to the double seat of

valve V1.



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2005 14


2. The min. pressure switch is linked

to chamber (a) by a hole (option).If the inlet pressure exceeds the

nominal value set at the pressure

switch, the pressure switch

switches through to the automatic

gas burner control.



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2005 15


3. Valves V1 and V2 open after theyhave received a release signal of

the automatic gas burner control.

Gas flow is released through

chambers a, b and c.



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2005 16

Control valve

• Body: Powder Coated Cast Iron

• Shaft: Zinc plated steel

• Shutter: Carbon steel• Shaft Packing Seal: Nitrile rubber (Buna-N)

• Maximum operating pressure:1/2" thru 4" 350 mbar

• Operating temperature range: 0to 60° C.



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2005 17

Compact Solenoid Valve 6014

Pressure range 0-16 bar

Operating voltages

AC 24, 110, 230 V/50 Hz,

DC 12, 24 V

Response timesopening AC 10-15 ms; DC 15-20 ms

closing AC 15-20 ms; DC 10-22 ms



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2005 18

Pressure switch DG

Pressure switch for gas DG

Control of gas and air pressuresNegative pressure cut-out for gas and

air and for low voltage

Indication for limitation value

EC design tested and certified

Internationally approvedSuitable for biologically produced

methane

Resetting device not lockable

(versions H and N)

Special-design pressure switches

Recommend function check: Once a Year



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2005 19

COFI Ignition Transformer

• Input voltage : 220 - 230 V, AC

• Output voltage : 1 x 8 kV

• Input current : 1 A

• Output current : 20 mA• Switch on time : 25% in 4 min.

• Input cable size : 3 x 0.75

• Weight : 1,6 kg



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2005 20

Ultraviolet Flame detector



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2005 21

Replacing the UltravioletSensing Tube



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2005 22

Ultraviolet Flame detector Periodic Maintenance

1. Clean the viewing window (or focusing lens) when

necessary. Remove the detector (see Troubleshooting

section) and use a clean cloth over the eraser end of apencil. Do not remove the window (or lens) to clean it. If

it is broken or damaged or it is coated with a substance

that cannot be cleaned off, replace it.

2. Keep the flame detection system adjusted for the

smoothest, most reliable operation as recommended bythe burner manufacturer.

3.Replace the sensing tube, coil and shutter assembly, or

viewing window only when necessary to obtain proper



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Eclipse Gas Burners

Maintenance instruction



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2005 24



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2005 25

Monthly Maintenance

• 1. Clean every month the gas filters (please refer to the instructions of the filter).

• 2. Clean each month the UV scanner or ionisation probe.

• 3. Clean each month the ignition electrode.

• 4. Keep the combustion air fan clean. Clean the air filters, if available,

each month.• 5. Check every month that the electrical safety shut-off valves are gas

tight in a de-energized position, including the pressure test nippleinstalled between the two valves.



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2005 26

General maintenance instructions

• 1. Clean every week the inlet grille of the combustion air blower or inlet

filter. Checkwhether the fan is dirty and clean, if necessary.

• 2. Regularly clean the gas filter.

• 3. If necessary, replace the flame rod and the spark plug every 6 monthsto obtain optimaloperation.

• 4. Check the safety shut-off valves for possible leakage every month.

• 5. Check the operation of the pressure switches and high temperaturelimit switch everymonth.

• 6. Clean the burner every 6 months.

• 7. See to it that all vents in pressure regulators, pressure switches, etc.are open.

• 8. Clean the feed back lines from pressure switches and regulators every6 months.It will be necessary that the lines are removed completely.

• 9. Keep the installation tidy.

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Eclipse Gas System