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Summary of Contents for Walchem WDIS Series
- Page 1 W A L C H E M WDIS Controllers WDIS Series Disinfection 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...
- Page 2 WALCHEM Corporation and for the purposes disclosed in writing at the time of purchase, if any. WALCHEM Corporation's liability under this warranty shall be limited to replacement or repair, F.O.B. Holliston, MA U.S.A. of...
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Page 3: Table Of Contents
Table of Contents Introduction .............................1 Specifications..........................1 Measurement Performance (Sensors)......................1 Electrical: Input/Output ..........................2 Mechanical (Controller) ..........................2 Unpacking and Installation ......................3 Unpacking the unit............................3 Mounting the electronic enclosure....................... 3 Installation ..............................3 Assembling the Sensor ............................ 3 Flow Cell Placement ............................4 Installing Sensor into Flow Cell ........................ - Page 4 New Access Code............................26 Maintenance ..........................28 Sensor Maintenance ............................ 28 Cleaning the Membrane..........................28 Replacing the Membrane ..........................28 Replacing the Fuses ............................ 29 Troubleshooting ...........................29 Error Messages ............................29 Calibration Time ............................. 29 Cal Failed............................... 29 Sens Low No Cal ............................29 Probe Error No Cal............................
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Page 5: Introduction
A fifth output is used as a diagnostic alarm. An isolated 4-20 mA output is optional. They are only compatible with Walchem sensors. The choice of the type of sensor is selected through the keypad. The sensors are temperature compensated internally; no temperature signal is transmitted to the controller. -
Page 6: Electrical: Input/Output
Electrical: Input/Output 110-120VAC 220-240VAC Input Power (Controller) 50/60 Hz, 10A 50/60 Hz, 5A Input Signal Controller Sensor Input ±1400 mV Interlock (optional) Isolated dry contact closure required (i.e., flow, level, etc.) Output Control 1/2 (ON/OFF) @ 120 VAC, 10 A resistive, 1/8 HP @ 240 VAC, 6A resistive, 1/8 HP Internally powered relays AUX1, AUX2, Alarm... -
Page 7: Unpacking And Installation
Mounting the electronic enclosure The WDIS series controller is supplied with mounting holes on the enclosure. It should be wall mounted with the display at eye level, on a vibration-free surface, utilizing all 4 mounting holes for maximum stability. -
Page 8: Flow Cell Placement
6. Push the cable onto the end of the sensor, aligning the pins with the holes. Turn the connector until hand tight to seal the cable connection. Flow Cell Placement Instructions for mounting the sensor into the process can vary greatly with the circumstances that are encountered in your application. -
Page 9: Icon Definitions
Cable, P/N 191303 Nut, P/N 102586 Sensor, P/N 191280 (WCDB) 191300 (WFCB) 191320 (WOZB) Clip Ring Groove 191338 (WPAB) Membrane Cap, P/N 103423 (WCDB) 103463 (WFCB) 103498 (WOZB) 103499 (WPAB) O-Ring, P/N 103422 Washer Set, P/N 103419 Clip Ring, P/N 103421 O-Ring, P/N 102594 Body, P/N 191279-R Icon Definitions... - Page 10 20 FT (6M) ROTAMETER 30-100 LPH PROCESS 3/4" ISOLATION VALVE (NORMALLY OPEN) 1/4" FROM PROCESS RECIRCULATION PUMP Figure 1 Typical Installation...
- Page 11 To Open Atmosphere Sensor Rotameter Flow Cell Water Out Flow Switch Flow Control Valve Water In Sample Valve Typical Installation Using Walchem Manifold...
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Page 12: Electrical Installation
WDIS3xx-5xx 240 VAC, 50/60 Hz, hardwired The various standard wiring options are shown below. Your WDIS series controller will arrive from the factory prewired or ready for hardwiring. Depending on your configuration of controller options, you may be required to hardwire some or all of the output devices. Refer to figures 2, 3 and 4 for circuit board layout and wiring. - Page 13 Hardwired Option WDIS Bottom View 4-20 mA Output Optional Optional Sensor (optional) Input Input Input Strain Reliefs (230 VAC) or Holes for Hardwiring of Input Power and Control Devices WDIS Prewired Option Side View Bottom View Optional 4-20 mA (optional) Input Alarm AUX 1...
- Page 14 FRONT PANEL POWER SUPPLY 4-20mA (Optional 4-20 mA Board) (Grounding NEUTRAL Stud) INPUTS FLOW SWITCH To Grounding Stud WFCB WCDB WOZB WPAB Figure 3 Wiring to Sensor...
- Page 15 Note: The Alarm relay is non-programmable. Refer to the Main Menu diagram on page 14 for the list of error conditions that trigger the alarm relay. Figure 4 WDIS310 Output Wiring...
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Page 16: Function Overview
Function Overview Front Panel Backlit LCD Display DISINFECTION CONTROLLER Output LEDs Setting Adjustment Keys CTRL 1 CTRL 2 AUX 1 AUX 2 PREV. NEXT EXIT ENTER Menu/Function Keys On/Off Power Switch Display A summary screen is displayed while the WDIS controller is on. This display shows a bar graph of the oxidizer process value relative to the set points, a digital display of the process value, and the current operating conditions. -
Page 17: Keypad
Access Code The WDIS series controller is shipped with the access code disabled. If you wish to enable it, see Section 5.10 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 the cover latch if you need more protection. -
Page 18: Normal Startup
Normal Startup Startup is a simple process once your set points are in memory. Simply check your supply of chemicals, turn on the controller, calibrate the sensor if necessary and it will start controlling. Shutdown To shut the WDIS controller down, simply turn off the power switch. Programming remains in memory. - Page 19 Possible Status Screens * Probe Error Probe Wash Main Menu Probe Wash Hold * Interlock * Output Timeout * Calibration Time Range Alarm In Range Output High/Low Alarm Output 1 On Output 2 On Normal * These status screens indicate that the diagnostic alarm relay is activated. 1.00 Normal EXIT...
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Page 20: Sensor Menu
Sensor Menu The sensor menu provides the following settings: Calibration history (informational only), 1 point calibration, zero calibration, sensor type selection, and other sensor setup menus. Each is discussed in detail below. Refer to the Sensor Menu chart on the next page. Note: If you are programming the unit for the first time you must set the Sensor Type first, selecting between Chlorine (CL2), Chlorine Dioxide (ClO2), Ozone, or Peracetic Acid. - Page 21 Sensor Menu 1.00 ppm Sensor EXIT ENTER PREV. NEXT Sensor 1.00 ppm Sensor 1.00 ppm Sensor 1.00 ppm Sensor 1.00 ppm Sensor 1.00 ppm Sensor 1.00 ppm Sensor 1.00 ppm Days Btwn Cal 7 Sensor Type Cal'd Mar/10/96 Calibrate Zero Calibration Input -100 mV Self Test...
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Page 22: Input
Input This menu displays the mV from the sensor. It is useful for troubleshooting. The sensor should be around 0 mV at 0 ppm and –100 mV per ppm (if chlorine, chlorine dioxide or ozone) or –10 mV per ppm (if Peracetic Acid). Self Test Press to perform a self-test. -
Page 23: Control Dir
is insufficient may be installed in the line, so that if flow past the sensor stops, the controller will not pump in chemicals based on a stagnant sample. Similarly, a level switch may be attached to prevent control of an empty batch tank. Control Dir Press to change the direction of control, then use the Up and Down arrows to toggle between... - Page 24 Control 1 & 2 Menu...
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Page 25: Auxiliary 1 And 2 Menu
Auxiliary 1 and 2 Menu The Aux 1 and 2 relays may be configured to operate in a number of ways. They may be a low alarm, high alarm, an out-of-range alarm, an in-range output, or a probe wash. The Aux 1 and 2 menus provides the following settings, which only appear if the appropriate output mode is selected: Low Alarm Pt, High Alarm Pt, Probe Wash Sched, Hold Time, Mode. -
Page 26: Probe Wash Sched
Probe Wash Sched Only appears if the probe wash mode has been selected. Press to program the probe wash schedule. The display may read "Event A 12:00 20" which ENTER indicates that the probe wash will start at noon and the pump will run for 20 seconds. Use the arrow keys to change the time of day or the pump on-time. - Page 27 Auxiliary 1 and 2 Menu...
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Page 28: Ma Menu (Optional)
4-20 mA Menu (Optional) This menu will only appear if the optional 4-20 mA output board is installed. It is used to set the scale of the 4-20 mA output. It contains the following menu selections: 4 mA Point, 20 mA Point, and Calibrate. -
Page 29: Clock Menu
Clock Menu The clock menu is used to set the date and time that the controller uses to schedule probe washing and calibration prompts. There is only one menu selection: Set Clock. Set Clock Press to set the clock. Use the arrow keys to change the year, date, and month, then press ENTER . -
Page 30: Access Code Menu
Access Code Menu This menu determines whether the access code feature of the controller is enabled or disabled and allows you to customize the access code to your own value. The access code controls whether or not you are allowed to change the parameters in the controller. With the access code disabled, any user may change any parameter. - Page 31 Access Code Menu The Access Code prompt may appear at any screen in the entire menu Any Top Display structure if the current access code has not been entered by the user. Access Code 0000 Access code entries will be valid for 10 minutes from the most recent key press.
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Page 32: Maintenance
Maintenance The WDIS control module itself needs very little maintenance. Clean the outside of the controller enclosure with a damp cloth. Do not spray down the controller unless the enclosure door is closed and latched. "Pigtails" should be protected from spray or wash-down. Check the cords and cables for damage. -
Page 33: Replacing The Fuses
Warning: Use of non-approved fuses can affect product safety approvals. Fuse ratings depend on controller power rating. Specifications are shown below. To insure product safety certifications are maintained, it is recommended that a Walchem fuse be used. Controller Walchem P/N... -
Page 34: Bad Zero Cal Fail
Bad Zero Cal Fail The Zero Calibration will fail if the mV reading from the sensor is outside of the range –100 to 100 mV. If the actual concentration is actually zero, refer to the sensor’s instruction manual for troubleshooting. Output Timeout This error message appears if one of the control outputs has been on longer than the maximum amount of time programmed in the "Time Limit"... -
Page 35: Probe Error
Always select the sensor type before setting the control or auxiliary output set points. Service Policy The WDIS Series Disinfection Controller has a 2-year warranty on electronic components and a 1- year warranty on mechanical parts (keypad, terminal strip and relays).
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