2 Installation2.6.3. Return water flow switch setting1253HAC027309-001 Revision: D© Copyright 2006-2010 ABB. All rights reserved.2.6.3. Return water flow switch settingIntroductionThe mechanical flow switch is pre-set at delivery to 8 liters/min at 0.2 MPa water pressure.If the water pressure exceeds 0.2 MPa, the setting cannot be done with the graduation on thewindow name plate, as the pressure affects the measured flow. Please perform the setting asdescribed in the following procedure.SettingsThe procedure below details how to set the mechanical flow switch.Action Note1. Open the solenoid valve on the water inlet.2. Water flow is indicated on the scale of the flowcontrol valve.3. Adjust the water flow to the level where theFlow switch shall give alarm. Use the redadjusting knob on the scale of the flow controlvalve.Detailed in section Return water flowcontrol on page 124.4. To adjust the set flow on the mechanical Flowswitch, remove the grommet on the uppercover and rotate the flow adjusting gear byusing a flat screwdriver.Turning clockwise will increase the set flowand turning counterclockwise will decreasethe set flow.xx0600003346Parts:• A: Flow switch5. Depending on initial value, increase ordecrease the set value until the g_flow_okchanges, by observing the Process Signalswindow on the Robot Teach Pendent.NOTE!The indicated flow level may differ from realflow as the flow switch is affected by the waterpressure.xx0600003355• Process Signals window6. Refit the grommet on the flow switch.Continues on next page
