Xylem Resfix Booster Set Fixed Speed - Manual (Page 3)

Operation
When a draw off point connected to the system is opened water will be discharged from the vessel (if fitted), if
the demand continues the system pressure will start to fall until the pump cut in pressure is reached.
The pump will now start and pressurise the system.
The pump will continue to run until demand cesses, the pressure will rise to the closed valve head of the
pump and the vessel will be re-charged (if fitted).
When demand cesses completely and flow has stopped (< 3l/m) the pump will run for approximately 10 sec-
onds and will then shutdown.
The pressure will now be sitting at the pump closed valve head value.
Lack of water
If the Genyo senses a lack of water the pump will be stopped automatically after approximately 10 seconds
and the Red failure light will be illuminated.
If the water supply comes back on line and a discharge is open the Genyo will automatically reset and start
the pump.
If the water supply has been reinstated and the pump has not started automatically the reset button can be
operated which will cause the pump to run for approximately 10 seconds and prim the system, if successful
the pump will then operate normally.
Maintenance
Routine check (6 monthly intervals)
1. Check the pump produces the correct pressure.
2. Check that the pump operates without undue noise or vibration.
3. Check the break tank is clean and that the correct water level has been maintained.
4. Check that all screws are tight on electrical components.
5. Check that the earth connections are tight and making good contact.
6. Check that the gas pre charge is at the correct pressure, this should be done by isolating the vessel from
the system and draining water out of the vessel via the isolation valve drain point.
once the water has been discharged, a tyre gauge can be connected to the pre charge valve to
display the vessel pre charge pressure. Recharge as necessary with Nitrogen or dry air.
Any other expansion vessels connected to the system can be checked in the same manner.
Pump removal
Isolate power supply feeding pump set.
Isolate water inlet feeding pump set.
Open an outlet to release system pressure.
Press the release ring on the coupling fixing the pump discharge pipe to the pump, at the same time press
release ring on tank connector to allow the pipe to be pulled up, this should extract the copper pipe from the
pump. If the tank connector retaining ring is tight it may be better to remove the tank connector back nut at
this stage.
If not already released, undo the retaining nut on the tank connector to release the anti-spin bracket.
Remove cable from Genyo unit and pump can be removed from tank for inspection.
Reverse procedure for refitting.
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resvari fs booster set o and m instructions:Layout 1 15/05/2012 09:09 Page 3