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10 

00238 

Pressure Sender & Valve connection

 

Incorrect 

Ensure that the valve is correctly installed with regard to the direction of the flow of gas and that the Sender Unit is fitted the 
correct way round. (Note: there is no flow “through” the pressure sender unit, it is purely reading the pressures either side of the 
valve. 

Correct 

Pressur

Solenoid 

Never mount the valve such that the Solenoid or Sender Unit are below the horizontal. 

Inlet Side/Upstream 

Outlet Side/Downstream 

    Direction of flow 

    Gas Solenoid and Sender Unit Mounting 

Pressure sender unit 

SEC-L 

v4

 

Содержание SEC-L v4

Страница 1: ...s installed and commissioned to the satisfaction of the manufacturer A commissioning certificate must be issued to the end user along with instructions for the operation of the equipment As the Manufa...

Страница 2: ...e Blind buttons A and B for engineer functions LED indications Power On green A blind button for displaying gas pressures on the LCD screen Gas Electric Water red when active to warn of live service F...

Страница 3: ...for full details 16 OPTA Over pressure check will isolate gas supply if pressure exceeds 70 mbar 17 Fill prove time for gas pressure proving see page 5 18 Timer adjustment for fan commissioning allow...

Страница 4: ...ip switches One condition selectable from each relay Max switching 48 volts 1 amp 15 BMS Relay PCB Press button A To display the gas pressures and view the set pressure proving set times Press button...

Страница 5: ...comm To enable the commissioning of the gas portion of the system before the ventilation interlock is completed you may temporarily disable the interlocking by pressing button 22 This will bypass the...

Страница 6: ...hat is being monitored for See the gas detectors own instructions for more guidance The maximum cable length between a detector and the control panel should not exceed 100 metres whilst we would alway...

Страница 7: ...ween 1m and 3m from the potential source Care should be taken so they are not located close to the edge of a canopy or in direct flow of the supply or extract ventilation For additional information or...

Страница 8: ...ed through the Medem CM2M K2 channel current Monitor fans Fan speed controls Fan live Supply Fire Alarm Requires a volt free NC contact Where using 3 phase fans interlock on a single phase See page ni...

Страница 9: ...hin the panel IMPORTANT If wired this way a warning notice must be attached to the panel to indicate that there are two separate mains feeds Contactor coil Live feed through switched relay To bench so...

Страница 10: ...the correct way round Note there is no flow through the pressure sender unit it is purely reading the pressures either side of the valve Correct Pressur e Solenoid Never mount the valve such that the...

Страница 11: ...d coil of the valve should never be mounted below the horizontal Pressure sender unit should never be mounted upside down to protect from water ingress Approx 400mm length INLET PORT OUTLET PORT Note...

Страница 12: ...red in series with the EM stop buttons To EM Stop connections in the panel Indicator bar shows when pressed Normal EM Stop Activated Multiple Stop Buttons Single Stop Buttons Resetting indicator bar T...

Страница 13: ...UK will exchange faulty valves for return to the manufacturer 5 Where a Medem UK engineer or another company appointed by Medem UK commission and installed system then that system will carry a ten ye...

Страница 14: ...D display that all the detectors have been recognised by the panel A recognised detector will appear as CO Carbon Monoxide CM combustible CH Carbon Dioxide OX Oxygen depletion and TP Temperature Count...

Страница 15: ...st If at any point the fans stop running opening the S1 or E1 contact the system will isolate the gas and report fans not running Check that the fans are not only switched on but actually running and...

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