Walchem WTCW100 Series Instruction Manual Download Page 1

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Five Boynton Road Hopping Brook Park Holliston, MA 01746 USA

TEL: 508-429-1110 WEB: www.walchem.com

WCT/WBLW100 Series

Cooling Tower and Boiler Controller

Instruction Manual

Summary of Contents for WTCW100 Series

Page 1: ...Five Boynton Road Hopping Brook Park Holliston MA 01746 USA TEL 508 429 1110 WEB www walchem com WCT WBLW100 Series Cooling Tower and Boiler Controller Instruction Manual...

Page 2: ...onents are expendable and are not covered by any warranty THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY EITHER EXPRESS OR IMPLIED AS TO DESCRIP TION QUALITY MERCHANTABILITY FITNESS FOR ANY PARTICULAR...

Page 3: ...time Daily Weekly 2 week or 4 week Biocide timers with pre bleed and post add lockout of bleed Intermittent sampling for boilers with proportional blowdown controlling on a trapped sample Time Proport...

Page 4: ...lly isolated 600 Ohm max resistive load Resolution 0 0015 of span Accuracy 0 5 of reading Agency Approvals Safety UL 61010 1 2012 3rd Ed CSA C22 2 No 61010 1 2012 3rd Ed IEC 61010 1 2010 3rd Ed EN 610...

Page 5: ...sensor range High end of sensor range Sample period Time Proportional mode 10 seconds 3600 seconds Sample Time Intermittent Sampling mode 0 seconds 3600 seconds Hold Time Intermittent Sampling mode 0...

Page 6: ...1 Determine the Rate of Steam Production in Pounds per Hour Either read off the boiler name plate water tube boilers or Calculate from horsepower rating fire tube boilers HP x 34 5 lbs hr Example 100...

Page 7: ...graphs on the next page Use of a flow control valve will give you the best control of the process since the flow rate can be easily adjusted The dial on the valve also gives you a visual indication if...

Page 8: ...nside the controller even when the power switch on the front panel is in the OFF position The front panel must never be opened before power to the controller is REMOVED If your controller is prewired...

Page 9: ...Union To Drain To Drain 1 2 3 Figure 4 Typical Boiler Installation Continuous Sampling Install accessories either vertically or horizontally per manufacturer s instructions To Drain Skimmer Blowdown L...

Page 10: ...10 VOLT AC OUTLET TO SANITARY SEWER COOLING TOWER OPEN SUMP CIRCULATION PUMP X Unions installed for replacement of solenoid or strainer Y Y strainer Z solenoid TYPICAL INSTALLATION SUBMERSION ELECTROD...

Page 11: ...ivity Electrode TEMP WHT TEMP GRN RCV BLK SHIELD XMT RED SAFETY COVER LABEL R SHLD High Pressure Conductivity Electrode GRN WHT RED BLK Condensate Electrode wiring is typical of all three sensor optio...

Page 12: ...Effect Flow Meter SHIELD INPUT POWER Chart Recorder SIGNAL SHIELD SHIELD R SHLD Figure 10 Digital Input and Analog Output Wiring 1 2 3 4 5 6 7 8 9 10 11 12 TB2 TB1 FUSE POWER SWITCH POWER SWITCH 1 2 3...

Page 13: ...U 240V BLK 120V BRN 240V Figure 12 W110 AC Power Relay Output Wiring 1 2 3 4 5 6 7 8 9 10 11 12 TB2 TB1 FUSE POWER SWITCH POWER SWITCH 1 2 3 4 5 6 7 8 9 10 11 12 R1 R2 R3 N N N N L TB3 TB4 TB5 TB6 TB7...

Page 14: ...er or Lower keys Once the value of the number is correct use the Enter key to store the new value into memory or use the Cancel key to leave the number at its previous value and go back Changing Names...

Page 15: ...ghted Press the Enter key Press the Scroll Down key until your language is highlighted Press the Confirm key to change all menus to your language Set date if necessary Press the Scroll Up key until Da...

Page 16: ...ng Setpoint Int Sampling R1 HOA Setting Setpoint Manual R1 HOA Setting Interlock Channels Pulse Prop R1 HOA Setting Setpoint Dual Setpoint R1 HOA Setting Setpoint Probe Wash R1 HOA Setting Input Timer...

Page 17: ...ter key to get to the Details screen Press the Settings key If the name of the relay does not describe the control mode desired press the Scroll Down key until Mode is highlighted Press the Enter key...

Page 18: ...ure compensation Enter the temperature of the buffer and press Confirm Buffer Value only appears for One Point Calibration except when automatic buffer recognition is used Enter the value of the buffe...

Page 19: ...e next reading shown will consist of an average of 10 of the previous value and 90 of the current value Cable Length The controller automatically compensates for errors in the reading caused by varyin...

Page 20: ...ress the Enter key with an output highlighted to access that output s details and settings NOTE When the output control mode or the input assigned to that output is changed the output reverts to OFF m...

Page 21: ...and a conductivity limit are set the time limit takes precedence The bleed relay will turn off once the time limit is reached or when the prebleed conductivity limit is reached whichever occurs first...

Page 22: ...ion from the set point The relay goes through a sequence of activation deactivation as described below The intended purpose of this algorithm is boiler blowdown A sample cannot be supplied to the sens...

Page 23: ...ontrol Mode Basic Timer Operation When a Probe Wash event triggers the algorithm will activate the relay for the programmed time The relay will activate a pump or valve to supply a cleaning solution t...

Page 24: ...digital flow meter and continuously adjusts the analog 4 20 mA output proportional band to achieve a target PPM level The user enters the target PPM and the data necessary to calculate the proportiona...

Page 25: ...troller see Export User Config file below Press the Enter key and then press the Confirm key to transfer those settings to this controller Export User Config File The User Configuration file contains...

Page 26: ...ays have a fuse to protect the controller from devices connected to the relays that draw excessive current Locate the fuse on the circuit board at the back of the controller enclosure underneath the c...

Page 27: ...ible Cause Corrective Action No flow Check piping for closed valves blockage etc Check recirculation pump Faulty flow switch cable Check with ohmmeter Faulty controller Check by shorting digital input...

Page 28: ...ectly Possible Cause Correction Action The software is not functioning If the error message clears on its own no action is required If the error message persists cycle power If the error message still...

Page 29: ...57 Control Board with AO 191613 Ribbon Cable Controller Parts 103875 Panel 102961 Hanger 102586 Nut 190998 03 Switch assembly 3 ft cable 190996 Float 102919 O Ring 191020 03 Switch Float Assembly 3 ft...

Page 30: ...191638 03 Electrodeless Conductivity sensor CPVC 3 ft cable 102586 Nut 102594 O ring 191020 03 Flow switch assembly 3 ft cable 190997 03 Switch Float assembly 3 ft cable 102594 O ring 102881 Flow swi...

Page 31: ...Switch manifold on panel C High pressure contacting conductivity D High pressure contacting cond Flow Switch manifold on panel E Inline submersion 316SS contacting conductivity F 316SS contacting cond...

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