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i2O

www.i2owater.com

[email protected]

+44 (0) 2380 111 420

Page 7

To consider before start the Calibration Process:



All APVs are factory set to

provide

approx.

18m

minimum

downstream

pressure.



Rotating the APV end cap

by “1-slot” is equivalent to
1m water pressure in both
directions. Use a C-
spanner to adjust the APV
where required.



Always ensure the APV is

depressurized

(hoses

disconnected)

when

performing calibrations.



When end cap contact is

made  with  the  internal
spring,  the  equivalent
pressure  is  approximately
10m

Содержание PRV

Страница 1: ... Science Park Southampton SO16 7QJ United Kingdom www i2owater com info i2owater com 44 0 2380 111 420 Company registration no 98345 6784 PRV Control System Installation and Commissioning Manual Author Imran Jones Issue 1 1 Date 19 Apr 2017 ...

Страница 2: ...2O kits The installation requires upstream downstream and control space tappings at the PRV with shut off valves fitted to each tapping prior to installation After installation calibration and commissioning the PRV control is adjusted remotely using the i2O Web platform oNet The required profiles can be configured in oNet prior to commissioning and these settings will be applied when the controlle...

Страница 3: ...420 Page 2 i Hardware installation procedure Install Control Logger and APV mounting brackets Install APV mounting plate Mount Control Logger and APV to brackets in the orientation shown Note APV should be located just above PRV to allow self bleeding air ...

Страница 4: ... 3 Assemble hose connection hardware to the PRV fitting the T piece downstream and Restriction Block upstream Select and fit the appropriate size of fixed orifice to the Restriction Block based on the size of the PRV Prepare quick release connectors on 6mm hoses ...

Страница 5: ...Upstream pressure P1 GREEN Control Space Pressure Optional P3 BLUE Downstream pressure P2 A Flow B APV PILOT C USB port to connect the Laptop If required splice flow meter cable in accordance with supplied instructions Assemble Serto couplings onto 12mm hoses A Compression nut B Sleeve C Stainless steel insert D Male adapter ...

Страница 6: ...hown below 12mm black hoses should Be as short as possible Have a long smooth radius Have no kinks Be routed appropriately to reduce strain Important Note that the APV shaft moves in and out approximately 10mm in normal operation Ensure no rubbing or restriction to the black hose and do not clamp tubing ...

Страница 7: ...oad Configurator from your i2O Platform For more information on downloading and using Configurator visit support i2owater com Deploy device through Configurator This updates location DMA details in the device and imports configuration settings Check the flow calibration and adjust as required Ensure PRV is not under i2O control Connect the Control Logger to the Laptop and open Configurator After a...

Страница 8: ... 18m minimum downstream pressure Rotating the APV end cap by 1 slot is equivalent to 1m water pressure in both directions Use a C spanner to adjust the APV where required Always ensure the APV is depressurized hoses disconnected when performing calibrations When end cap contact is made with the internal spring the equivalent pressure is approximately 10m ...

Страница 9: ...to ensure that the pilot has been mechanically set to its minimum spring pressure and the starting pressure has been entered before clicking the Calibrate button If not you have to mechanically set the pilot to the minimum spring pressure and enter the starting pressure before continuing Click the button Calibrate and consecutives messages will appear on the main screen Please read carefully all o...

Страница 10: ...matically from the starting point configured in the calibration process For this reason it is absolutely vital that the controller is left in service mode when the shut off valves on the PRV are opened to ensure that the APV is still at the same starting point when it starts to hydraulically control the pressure It is only after the pressure has stabilised and the PRV is controlled hydraulically b...

Страница 11: ...s to be 2meters from the target pressure required If this occurs then adjust the end cap using the C spanner in the method described earlier either in a clockwise or anti clockwise rotation to achieve the target start pressure Do not change any other settings at this point only adjust the APV end cap if necessary 6 At this stage the pilot will work as a conventional hydraulic pilot and will attemp...

Страница 12: ...ent downstream pressure Pressure mH psi bar 4 Adjust APV endcap to set minimum pressure if required Connect to Configurator and carry out APV calibration Record Current downstream pressure Re adjust endcap if necessary Force Dial up from Configurator check pressures and PRV operation Pressure mH bar psi 5 Take photographs of APV to Restriction Block PRV connections If you experience any difficulty...

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