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Summary of Contents for IWAKI WALCHEM EJ Series
- Page 1 HOW TO SETUP THE IWAKI/WALCHEM CHEMICAL PUMPS EWN-R, EWN-Y & EJ Series Chemical Pumps For use with CPI-MI, WP2 and for STOP/START Signals 5/3/2019...
- Page 2 Table of Contents: GLOSSARY ------------------------------------------------------------------------- p. 3 EWN-R: START/STOP USE --------------------------------------------------- p. 4 EWN-R: CPI-MI USE ---------------------------------------------------------- p. 7 EWN-Y: START/STOP USE --------------------------------------------------- p. 10 EWN-Y: CPI-MI / WP2 USE -------------------------------------------------- p. 14 EJ: CPI-MI / WP2 USE ---------------------------------------------------------- p. 17 FLOW CHECKER ----------------------------------------------------------------- p.
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Page 3: Wait Mode
Glossary WAIT MODE – the state where the chemical pump will not inject chemical. While in this MODE, other MODES can be navigated to and settings can be changed. When the pump is in WAIT MODE, the ON LED will light ORANGE. The EWN-Y pump in WAIT MODE;... -
Page 4: User Mode
EWN-R CHEMICAL PUMPS FOR USE WITHOUT WATER TREATMENT CONTROLLING SYSTEM (START/STOP) – Refer to p.66 (EWN-R Manual) The signal to run the Chemical Injection Pump is a START/STOP signal; normally it is the feed water pump contactor. The chemical pump should be wired to inject when the feed water pump turns on. The chemical pump should have constant power and should be powered, even when not injecting. - Page 5 Select “STOP” (“STOP” should be displayed on the screen). Push the EXT button. Select “NOR. CL” by pressing the UP or DOWN button. Push the START/STOP button to return to WAIT MODE. 5/3/2019...
- Page 6 Press the START/STOP button again to remove the pump from WAIT MODE, so that it can begin injecting chemical. Pump Setup: Flow Diagram 5/3/2019...
- Page 7 FOR USE WITH WP2 OR CPI-MI – Refer to p.55 (EWN-R Manual) The signal to control the Chemical Injection Pump is a pulse signal which comes from the WP2 or CPI-MI. The chemical pump will remain powered, but will only pump upon receiving pulses from the WP2 or CPI-MI. The rate at which the pump injects chemical depends on the number of pulses.
- Page 8 Pump Setup: Step-By-Step Enter EXT MODE by pressing the EXT button while the pump is in WAIT MODE. *Press the START/STOP button if the pump is running to stop the pump. Push and hold the EXT button for 3 seconds to go to EXT MODE SELECTION.
- Page 9 Confirm that the multiplier is (x 1). If it needs to be changed, you can press the UP/DOWN buttons to adjust the multiplier. Press the EXT button to set/confirm the multiplier value. Press the START/STOP button to return to EXT MODE.
- Page 10 EWN-Y CHEMICAL PUMPS FOR USE WITHOUT CPI-MI (START/STOP) – Refer to p.26 (EWN-Y Manual) The signal to run the Chemical Injection Pump is a START/STOP signal; normally it is the feed water pump contactor. The chemical pump should be wired to inject when the feed water pump turns on. The chemical pump should have constant power and should be powered, even when not injecting.
- Page 11 Press the UP/DOWN button to get to INPUT setting. Press the EXT button to go into the INPUT settings menu. Select STOP.L by pressing the UP/DOWN button. Press EXT to select if the pump will be Normally Open (NO) or Normally Closed (NC). 5/3/2019...
- Page 12 Press the UP/DOWN button to select CL-OF. *In this mode, the pump should run from receiving an input. Press the EXT button to return to STOP.L. Press the START/STOP button to return to USER MODE. Press the START/STOP button to return to WAIT MODE.
- Page 13 Press the START/STOP button to remove the pump from WAIT MODE so that it can begin to inject chemical. *Green light shown above “ON” & Red light shown above “STOP”. Pump Setup: Flow Diagram 5/3/2019...
- Page 14 EWN-Y CHEMICAL PUMPS FOR USE WITH WP2 or CPI-MI – Refer to p.75-76 (EWN-Y Manual) The signal to control the Chemical Injection Pump is a pulse signal which comes from the WP2 or CPI-MI. The chemical pump will remain powered, but will only pump upon receiving pulses from the WP2 or CPI-MI. The rate at which the pump injects chemical depends on the number of pulses.
- Page 15 Pump Setup: Step-By-Step Enter EXT MODE by pressing the EXT button while the pump is in WAIT MODE. *Press the START/STOP button if the pump is running to stop the pump. Press and hold the EXT button for 1 second to 1 sec.
- Page 16 Confirm that the multiplier is (1). If it needs to be changed, you can press the UP/DOWN buttons to adjust the multiplier. Press the EXT button to return to the EXT MODE SELECTION display. Press the START/STOP button to return to EXT MODE.
- Page 17 EJ CHEMICAL PUMPS FOR USE WITH WP2 or CPI-MI – Refer to p.43 (EJ Manual) The signal to control the Chemical Injection Pump is a pulse signal which comes from the WP2 or CPI-MI. The chemical pump will remain powered, but will only pump upon receiving pulses from the WP2 or CPI-MI. The rate at which the pump injects chemical depends on the number of pulses.
- Page 18 Pump Setup: Step-By-Step Have the pump in WAIT MODE *Press the START/STOP button if the pump is running to stop the pump. Press START/STOP and UP and the spm START indication blink as the pump starts to run from STOP external pulse signals.
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Page 19: Installation
Chemical Flow Checker (FCM) The Chemical Flow Checker is a device used to confirm the flow of chemical through the chemical pump. When the chemical pump injects chemical, the Flow Checker will detect a pulse when chemical properly flows through the pump. A [P] will also flash in the corner of the display every time the pump recognizes chemical flow. - Page 20 3) Connect the Flow Checker body to the pump head with the Lock Nut. Turn the Lock Nut counter- clockwise to tighten them. Note: Take care not to drop the plate, O-ring, or float. The float also has a mounting direction; install with the red mark facing upwards.
- Page 21 Refer to p. 54 of the EWN-Y Manual 1) Connect the lead wire of the FCM to the DIN 5-pin connector. 2) Fit the connector to the sensor signal terminal (Connector 3). 5/3/2019...
- Page 22 Pump Setup: Step-By-Step In order to utilize the Flow Checker (FCM) for EWN-Y Pump, the chemical pump must be set up to recognize the signal when chemical is pumped. The settings will also allow the pump to attempt to fix itself when air gets into the line and to alarm when the pump is no longer injecting chemical (such as chemical running out, or if the pump needs to be re-primed).
- Page 23 Press the EXT button to go to the MODE SELECTION menu. Press the UP/DOWN button to get to F.CHK setting. Press the EXT button to return to the F.CHK settings menu. Press UP/DOWN to select FC.MUM to set the upset codition parameter. 5/3/2019...
- Page 24 Press EXT to adjust the number of dry shots that cause the upset condition. Press UP/DOWN to adjust the value to 60. This means that 60 dry shots will cause the upset condition. Press the EXT button to return to FC.MUM. Press UP/DOWN to get to FC.POF to set the stop function.
- Page 25 Press EXT to adjust the number of dry shots that cause the pump to stop. Press UP/DOWN to adjust the value to 60(max). This means that after another 60 dry shots, the pump will shut off and show “FLOW” on the LCD. Press EXT to adjust the number of dry shots that cause the pump to stop.
- Page 26 Press the START/STOP button to return to WAIT MODE. Pump Setup: Flow Diagram 5/3/2019...
- Page 27 Chemical Pump Setup (use with CPI-MI): When used in combination with CPI-MI, adjustments must be made in order to utilize the Posiflow/Flow Checker. The pump will need to be set to “MULT x 2” so that signal is properly received by the pump and the “P”...
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