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Walchem WDB400 Series, Instruction Manual

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Walchem WDB400 Series Instruction Manual Download Page 12

 

 

9

 

 
 
 
 

POWER

AUX A

BLOWDOWN A

CONDUCTIVITY
ELECTRODE A

FLOW SWITCH A
(OPTIONAL)

WATER METER A
(OPTIONAL)

WATER METER B
(OPTIONAL)

BLOWDOWN B

ALARM

SPARES

SPARE

AUX B

4-20mA 1
(OPTIONAL)

4-20mA 2
(OPTIONAL)

CONDUCTIVITY
ELECTRODE B

FLOW SWITCH B
(OPTIONAL)

 

 
 

 
 
 

Figure 3 Conduit/Wiring Configuration  

Summary of Contents for WDB400 Series

Page 1: ...es Dual Boiler Controller Instruction Manual Walchem Corporation Five Boynton Road Hopping Brook Park Holliston MA 01746 USA TEL 508 429 1110 FAX 508 429 7433 WEB www walchem com W A L C H E M WDB400...

Page 2: ...onics and 12 months for mechanical parts and electrodes from date of delivery from the factory or authorized distributor under normal use and service and otherwise when such equipment is used in accor...

Page 3: ...s Code 13 4 5 Startup 13 4 6 Shut Down 13 5 0 OPERATION 14 5 1 Main Menu 14 5 2 Conductivity A or B Menu 16 5 3 Temperature A or B Menu 18 5 4 Blowdown A or B Menu 19 5 5 Auxiliary Menu 21 5 6 Time Me...

Page 4: ...the conductivity reading are available for all models Any set point may be viewed without interrupting control Each set point change will take effect as soon as it is entered An access code is availa...

Page 5: ...group total current for this group must not exceed 6A 4 20 mA 1 or 2 optional Internally powered Fully isolated 600 Ohm max resistive load Resolution 001 of span Accuracy 1 of reading Agency Approvals...

Page 6: ...abled Feed Menu Feed Lockout Timer Mode A 1 second 99 min 59 sec Percent of Blowdownd Mode B 5 99 Feed Time Limit Mode B 1 minute 99 min 59 sec Percent of Time Mode C 5 99 Feed Cycle Time Mode C 10 mi...

Page 7: ...ance from the controller The conductivity electrodes should be placed as close to the controller as possible to a maximum distance of 250 ft Less than 25 ft is recommended The cable MUST be shielded f...

Page 8: ...e 10 cycles of concentration has been recommended 3 Determine the Required Blowdown Rate in Pounds Per Hour Blowdown Rate Steam Production Concentration Ratio 1 Example 3450 10 1 383 33 lbs hr 4 Deter...

Page 9: ...s Orifices 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 10 20 30 40 50 60 70 80 90 100 200 300 Pressure PSI Lbs hr 1 8 inch dia 3 16 inch dia 1 4 inch dia 5 16 inch dia Flow Control Valve Maxim...

Page 10: ...alve or Orifice Union CONDUCTIVITY ELECTRODE TEE 2 ft minimum 1 to 3 ft maximum 10 ft max with minimal valves elbows unions To Drain Skimmer Blowdown Line 3 4 Min up to Electrode Full Port Block Valve...

Page 11: ...meter contactor input the 4 20 mA output or a remote flow switch it is advisable to use stranded shielded twisted pair wire between 22 26 AWG Shield should be terminated at the controller ground stud...

Page 12: ...ELECTRODE A FLOW SWITCH A OPTIONAL WATER METER A OPTIONAL WATER METER B OPTIONAL BLOWDOWN B ALARM SPARES SPARE AUX B 4 20mA 1 OPTIONAL 4 20mA 2 OPTIONAL CONDUCTIVITY ELECTRODE B FLOW SWITCH B OPTIONAL...

Page 13: ...STUD SHIELD L1 L2 N G R N 1 2 0 V G R N Y E L 2 4 0 V WHT 120V BLU 240V B LK 12 0V B R N 24 0V R R 5V BLK RED COND T T R R Conductivity Electrode Do not connect shield drain wire at this end G WR B G...

Page 14: ...er BLK 120V BRN 240V WHT 120V BLU 240V WHT 120V BLU 240V WHT 120V BLU 240V GRN 120V GRN YEL 240V TO GROUND STUD GRN 120V GRN YEL 240V TO GROUND STUD GRN 120V GRN YEL 240V TO GROUND STUD WHT 120V BLU 2...

Page 15: ...Alarm A Low Alarm B Temp Err A Temp Err B Cond Err A Cond Err B No Flow A No Flow B Blodown Timeout A Blodown Timeout B Blowdown A Blowdown B Feed A Timeout Feed B Timeout Feed A Feed B Waiting A B S...

Page 16: ...it see Section 5 7 for operation With the access code enabled any user can view parameter settings but not change them Note that this provides protection only against casual tampering Use a lock on t...

Page 17: ...roller determines which menus are available as you scroll through the settings Certain menus are only available if you select certain options All settings are grouped under the following main menu ite...

Page 18: ...0 mA 9 32 mA Same as A A 1000 s 77 F Blowdown A 1000 s 77 F Aux HI ALARM A Possible status screens HI ALARM B LOW ALARM A LOW ALARM B TEMP ERR A TEMP ERR B COND ERR A COND ERR B NO FLOW A NO FLOW B WA...

Page 19: ...ty rises above the set point a valve is opened to drop the conductivity No additional menus related to this blowdown mode are found in the Conductivity menu Sample Mode C I Intermittent Intermittent s...

Page 20: ...below to determine the blowdown time Prop Band This is the conductivity value above the set point at which the maximum blowdown time will occur This may be set for any value between 1 and 10 000 S cm...

Page 21: ...the fluid temperature and adjust the WDB controller to match Once Calibrate is entered the unit continuously displays temperature readings Press the Up or Down arrow key to change the value displayed...

Page 22: ...is greater than 1500 but does not turn OFF until the conductivity drops below 1300 This setting is not used when intermittent Sampling has been selected Time Limit This menu allows you to set a maxim...

Page 23: ...20 Figure 11 Blowdown A or B Menu...

Page 24: ...a water contactor pulse is detected This contactor input can be divided to accommodate a large variety of water meters Contacts will accumulate feed time so that all contacts are accounted for The Fe...

Page 25: ...tting up the Feed and Blowdown additions Chem Feed Mode A B C D This allows the user to select the chemical feed mode as described above H O A This sets the Hand Off Auto for the feed output This was...

Page 26: ...TER EXIT ENTER EXIT Legend Operation Lockout 99 00 TIMEOUT TIMEOUT of BlowDn 10 Max Time 99 00 TIMEOUT 24 05 of Time 10 Cycle Time 10 00 TIMEOUT Time cont 1 00 TIMEOUT Contacts by 1 TIMEOUT Time Limit...

Page 27: ...ws Time Mon 10 20 Set Time Press ENTER to set the Time Use the arrow keys to adjust the day and time and then press ENTER to store or EXIT to discard 2000 S 68 F Time Sat 12 15 Time Sat 12 15 Set Cloc...

Page 28: ...tes that the current output of the 4 20mA card is 9 20 mA Set 4mA Pt This conductivity setting will correspond to a 4 mA output from the controller Set 20mA Pt This conductivity setting will correspon...

Page 29: ...ly Enable N Y Press the Up or Down arrow key to change the N to Y and press ENTER to enable the access code feature If the access code is enabled you must first enter the access code to disable it New...

Page 30: ...as lost when it was returned and the cause of the reset Current or Backup Datalog Place a USB flash drive with at least 10 MB capacity into the USB port on the front panel of the controller Press the...

Page 31: ...alog Transfer Success Next Prev Datalog Copy Reset Log Next Prev ENTER EXIT ENTER EXIT ENTER EXIT Datalog Transfer Success Datalog Transfer Success Possible Status Screens Transfer Success Transfer Fa...

Page 32: ...panel of the controller Press the Enter key to import the configuration file from the stick to the controller The file name must have an ini extension in its name The controller will display the prog...

Page 33: ...le was successfully imported from the USB disk the controller will display Transfer Success The controller will automatically reboot and come up with the new software installed If the software upgrade...

Page 34: ...cedure The electrodes can normally be cleaned using a cloth toothbrush cotton swab or paper towel and a mild cleaning solution such as 409 cleanser Occasionally electrodes may become coated with vario...

Page 35: ...grammed Possible Cause Corrective Action Sensor disconnected Reconnect Check cable for continuity Sensor dry Check tee for obstruction Verify flow Change location of electrode Solenoid valve stuck ope...

Page 36: ...indicates that the conductivity is above the programmed percentage above set point The conductivity will continue to be monitored and the blowdown and feed outputs will be allowed to be activated Poss...

Page 37: ...r repair To check the electrode check the electrode connections to the terminal strip refer to Figure 3 Make sure that the correct colors go to the correct terminals and that the connections are tight...

Page 38: ...with the relay on closed If it always reads infinite ohms the controller is faulty 7 5 No Display Verify that the controller has power Check F1 fuse If a 4 20 mA output option board has been installed...

Page 39: ...36 TEL 508 429 1110 FAX 508 429 7433 WWW WALCHEM COM...

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