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System description

 

SEC-Le 

System On/Off enables gas detection and use of 

each soft touch service button 

A

 Blind button for displaying gas pressures on the LCD screen 

Blind button for displaying first 8 detectors (Gas & temperature) on the LCD screen.  

Multi gas detection, air quality monitor and gas pressure proving system 

 

The SEC-Le system comprises of a mains powered main control panel, and low voltage pressure sender unit and fitting kit. The 
pressure sender unit it mounted onto the gas valve  (with the fitting kit) and transmits the gas pressure information back to the 
main panel in order to perform its integrity test. 

    Control Panel 

The front of the panel has the following controls and indications: 

 

Emergency stop button. 

 

System On/Off switch. 

 

Yellow soft touch On/off buttons for gas and electric. 

 

White Blind buttons 

A

 and 

for engineer functions. 

 

LED indications: 

 

Power On - green………..

A: 

blind button for displaying gas pressures on the LCD screen 

 

Gas/Electric - red when active to warn of live service 

 

Fans running light – yellow…

B: 

blind button for displaying connected devices (detectors & temperature) on the LCD screen 

 

LCD display: 

 

For displaying system status during both installation and normal use, also for displaying diagnostics 

 

Pressure sender unit 

Pressure sender unit transmits pressure information back to the main panel in order for it to preform its integrity test. Its is not 
optional and must be connected, 

the system will not work without it. 

 

 
It is mounted to the gas solenoid valve inlet and outlet test ports using 8mm OD copper pipe. Use the appropriate Medem fitting 
kit to fit the control valve size 

(see page 10,11)

 

The pressure sender is connected to the control panel with low voltage two core screened cable using the terminal marked A & B.   

NOTE: This is low voltage and should be segregated from mains wiring. 

 

   Pressure Sender Unit 

Содержание SEC-Le V4

Страница 1: ...safety system is 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 equipme...

Страница 2: ...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 red when active to warn of live service Fans running li...

Страница 3: ...age 4 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...

Страница 4: ...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 B To display the gas installed gas detectors 1 8 pre...

Страница 5: ...1 Option Headers 18 19 21 20 Fan 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 pressin...

Страница 6: ...e the gas detectors own instructions for more guidance SEC Le Detector Information VE supply Comm s From either the main panel or an extender Detectors are wired in parallel and can be connected to on...

Страница 7: ...een 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: ...nnel 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 nine Earth Connections not shown 0...

Страница 9: ...sent within 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...

Страница 10: ...s 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 e Solenoid Never mount the valve such...

Страница 11: ...Solenoid 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 PO...

Страница 12: ...ld be wired 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 indicat...

Страница 13: ...er Medem 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...

Страница 14: ...CD 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 Coun...

Страница 15: ...ssure test 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 runn...

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