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100.6015.10 

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4 SERVICE

Preventative maintenance kits for each of  the assemblies are available from the factory.  Each kit contains all 
the parts and detailed instructions that are required for complete maintenance.  All o-rings and gaskets that 
have been disturbed during the disassembly must be replaced during reassembly in order to insure safe, 
trouble free operation.  Failure to replace these parts could result in a shortened operation period and bodily 
injury.

Refer to Figures 4, 5, and 6

4.1 

Cleaning the Flowmeter Assembly

4.1.1  Use a coin or washer as a screwdriver and loosen the bottom meter inlet plug while holding the 

flowmeter assembly to make sure it does not drop out. It may be necessary to use pliers if  the plug 
has not been removed for some time.

4.1.2  Loosen the plug about three (3) turns and remove the meter assembly. (Push up and out on the 

flowmeter to remove).

4.1.3  Bend a paper clip or wire and pull out the ball stops on each end of  the glass tube. DO NOT LOSE 

THE METERING BALL.

4.1.4  Clean the inside of  the glass tube with a pipe cleaner or bottle brush using wood alcohol, and rinse 

thoroughly with warm water. 

4.1.5  Clean the metering ball using wood alcohol, and rinse thoroughly with warm water.

4.1.6  Thoroughly dry the glass metering tube. Reassemble the metering stops and ball.

4.1.7  Reinstall the meter assembly by tightening the meter inlet plug making sure that it is on center with 

the top and bottom gasket.

NOTE: The meter gaskets can usually be reused. Turn the gaskets over for best results.

4.2 

Rate Valve Cleaning

4.2.1  Unscrew the rate valve plug from the valve bonnet.

4.2.2  Remove the valve bonnet from the top of  the front body.

4.2.3  Clean the parts by immersing in alcohol or soapy water, rinse, and dry thoroughly with a clean cloth.

4.2.4  The o-rings on the valve bonnet may need replacing if  scratched or bruised.

4.2.5  Examine the valve sleeve for nicks or any marks. The sleeve may be removed for this purpose. Use 

caution to avoid marking the surfaces.

4.2.6  The o-ring on the outside of  the valve sleeve usually may not require replacing.

4.2.7  Inspect the rate valve hole in the meter housing and clean with a damp cloth if  necessary. DO NOT 

use any sharp tools that may scratch the internal surface. Never use any solvent for cleaning the 
plastic, as it will deteriorate rapidly. Wood alcohol can, however, be used successfully.

4.2.8  Apply a thin film of  fluorolube grease to o-rings and slide the valve sleeve into the top body. 

4.2.9  Replace rate valve.

Summary of Contents for 200 Series

Page 1: ... 1 100 6015 10 Instruction Manual Series 200 Remote Meter Panels 500 PPD 10 kg h Maximum Capacity 100 PPD 2 kg h Maximum 200 PPD 4 kg h Maximum 250 PPD 5 kg h Chlorine only 500 PPD 10 kg h Maximum ...

Page 2: ...to instruction operating manuals all instructions given on labels or attached tags should be followed Regardless of these efforts it is not possible to eliminate all hazards from the equipment or foresee every possible hazard that may occur It is the responsibility of the installer to ensure that the recommended installation instructions are followed It is the responsibility of the user to ensure ...

Page 3: ... 4 SERVICE 12 4 1 Cleaning the Flowmeter Assembly 12 4 2 Rate Adjustment Valve Cleaning 12 5 TROUBLESHOOTING CHART 13 FIGURES 1 100 PPD 2 kg h Meter Panel 6 2 200 PPD 4 kg h 250 PPD 5 kg h Chlorine only Meter Panel 7 3 500 PPD 10 kg h Meter Panel 8 4 100 PPD 2 kg h Meter Panel Components 9 5 250 PPD Max 4 kg h Meter Panel Components 10 6 500 PPD 10 kg h Meter Panel Components 11 ...

Page 4: ...nd quantity of the gas being handled 2 the complexity of the gas supply system 3 the quality and quantity of water or process liquid being used to operate the ejector s and 4 operation procedures More frequent service periods are especially indicated when venting of the VR is occurring during the one year operational period This is usually indicative of foreign debris holding the inlet valve open ...

Page 5: ...er panel If the surface is not suitable for wood screws choose an appropriate anchor bolt to that surface Black polyethylene tubing is normally used for the vacuum line Do not kink this tubing It may be desirable to use tubing connectors tees or 90 elbows to provide as direct run as possible and minimize kinking conditions Use enough tubing length to allow movement of the vacuum regulator for serv...

Page 6: ...100 6015 10 6 Figure 1 100 PPD 2 kg h Meter Panel ...

Page 7: ... 7 100 6015 10 Figure 2 200 PPD 4 kg h Meter Panel ...

Page 8: ... feeding sulfur dioxide the actual flow rate is 0 95 of the scale value For example a reading of 50 PPD 1 kg h is actually 45 PPD 0 95 kg h sulfur dioxide If feeding ammonia the actual flow rate is 0 50 of the scale value For example a reading of 50 PPD 1 kg h is actually 25 PPD 0 5 kg h ammonia Read the flowmeter scale at the center of the ball NOTE NEVER use the rate valve on the remote meter pa...

Page 9: ... 9 100 6015 10 Figure 4 100 PPD 2 kg h Meter Panel Components ...

Page 10: ...100 6015 10 10 Figure 5 250 PPD Max 4 kg h Meter Panel Components ...

Page 11: ... 11 100 6015 10 Figure 6 300 6 kg h 500 PPD 10 kg h Meter Panel Components ...

Page 12: ...n the metering ball using wood alcohol and rinse thoroughly with warm water 4 1 6 Thoroughly dry the glass metering tube Reassemble the metering stops and ball 4 1 7 Reinstall the meter assembly by tightening the meter inlet plug making sure that it is on center with the top and bottom gasket NOTE The meter gaskets can usually be reused Turn the gaskets over for best results 4 2 Rate Valve Cleanin...

Page 13: ...onnection and remake as necessary c Replace vacuum tubing and arrange line s to eliminate 2 Flowmeter ball bounces and or maximum gas feed rate cannot be achieved during normal operation a Vacuum regulator inlet filter screen dirty b Rate valve dirty c Flowmeter dirty d Ejector water supply pressure fluctuating causing insufficient ejector vacuum Ball bouncing only a Replace gas inlet filter b Cle...

Page 14: ... improvements may be made without notice SEP 2015 De Nora Water Technologies 3000 Advance Lane Colmar PA 18915 ph 1 215 997 4000 fax 1 215 997 4062 web www denora com mail info dnwt denora com Registered Trademark 2015 All Rights Reserved ...

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