Adjusting your Pressure Switch
Contents
1. F ON OFF etc seen as pulsing flow from tap or as inability to set constant water temperature water goes hot cold hot cold instead of constant warm Most likely cause is that present voltage is significantly higher than when last adjusted CURE Re adjust pressure switch if problem persists add a Whale Surge Damper WS7205 Pump runs very noisily but does not pump water Likely to occur after water container has been refilled Pump is air locked and is fighting to get air out and water in CURE Unplug from the socket allowing pump to flood and reconnect by plugging in again The correct sequence when refilling the container is to unplug put pump into container then reconnect Pump continues to run for up to 30 seconds after tap is turned off This is not a problem This is a characteristic of pressure switch systems caused by the dampening effect of the hot water heater or surge damper on the cold side If after following these procedures the system continues to pulse when all taps are closed there may be a leak in the system Please contact Whale Support for further guidance Whale Support tel 44 0 28 9127 0531 fax 44 0 28 9146 6421 info whalepumps com whalepumps com Call us directly for product and installation advice v2_feb12 Ref jm_pressureswitchguide2. Your pressure switch is factory set and should not normally require adjustment However adjustment may be required if the power supply voltage has varied from the previous setting either due to battery drainage or higher voltage being supplied when the battery charger is operating In the event that your pump doesn t switch off when you close the taps or it pulses on and off rapidly when the taps are fully open follow these guidelines to re adjust the pressure switch setting Which Pressure Switch do you have In Line Pressure Switch Integral Pressure Switch Internally located within the water system pipework Located on the back of the water inlet socket Pressure Switch Locking Nut Pressure Switch Ensure the system including the heater is full of water and all taps are closed Refer to your user manual Tighten the adjusting screw clockwise until the pump comes on For integral socket based pressure switches first loosen the pressure switch locknut in an anti clockwise direction Open any tap until you have a smooth flow of water then close the tap You should hear the pump running and the pump running light if fitted will be on Return to the pressure switch and turn the pressure switch adjustment screw slowly anti clockwise until the pump has stopped Turn the screw a further half turn 180 degrees anti clockwise Check for correct operation by opening and closing all taps individually The pump should tu
3. rn on when the cold tap is opened and switch off immediately when the cold tap is closed NB There will normally be some pulsations at low flows The hot side may take about 10 seconds to react both on and off due to cushioning effect in the water heater For integral socket based pressure switches carefully tighten carefully tighten the locknut until it is tight Keeping the adjustment screw in position Whale s policy is one of continuous improvement and we reserve the right to change specifications without prior notice Whale is a registered trademark of Munster Simms Engineering Ltd also trading as Whale 2012 Copyright of Munster Simms Engineering also trading as Whale all rights reserved Please note these tips are included as a guide only For servicing and product advice for your specific vehicle please contact Whale Support Pressure Switch Setting If setting of the pressure switch is still not correct you may experience Pump running continuously even with tap closed If undiscovered could result in pump failure and flat battery Most likely causes are that present voltage is Significantly lower when last adjusted or water container is empty CURE Re adjust switch or refill container Pump does not run at all If not due to blown fuse or faulty connections then most likely cause is excessive continuous running see above CURE Replace pump and re adjust switch Pump runs intermittently ON OF
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