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System description
SEC-K
Multi gas detection, air quality monitor, fan interlock and gas pressure proving system
The SEC-K is a gas pressure proving system with electric isolation, gas detection and ventilation interlock. By monitoring the carbon dioxide and
temperature the system can control ventilation levels where required. It is designed for use primarily in commercial kitchens.
The system comprises of a mains powered panel capable of operating a mix of up to 16 devices of different types. The device types are, carbon
dioxide, carbon monoxide, combustible gases, oxygen depletion and temperature.
The system will perform a down stream integrity check ensuring gas tightness before use, close the gas solenoid valve in the event of a high-level
gas alarm or ventilation failure, low incoming gas pressure or if the emergency stop button is pressed.
Control Panel
the front of the panel has the following controls and indications:
Emergency stop button
key switch
On/off buttons for gas and electric
Blind button
A
and
B
LED indications:
Power On - green………...
A
blind button for displaying gas pressures on the LCD screen
Gas/Electric - red
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
Other points to note
The maximum cable length between a detector and the control panel should not exceed 100 metres, If the distance between the
main panel and the detectors is greater than 20metres 1mm cable should be used on the +VE, 0v terminals.
Pressure Sender Unit Mounting. This has an inlet and an outlet port (1/4 inch NPT). The inlet must be connected to the inlet test point
on the solenoid valve (see fitting kit page) and the outlet port after the solenoid valve typically using 8mm OD copper pipe. Use the
appropriate Medem fitting kit to fit the control valve size. The pressure sender is connected to the control panel with low voltage two
core cable using the terminal marked A & B. NOTE: This is low voltage and should be segregated from mains wiring.
INS/1017/002
System On/Off enables gas detection and use
of each service button
A B
A
Blind button for displaying gas pressures on the LCD screen
B
Blind button for displaying first 8 detectors (Gas & temperature) on the LCD screen.
Press
A
&
B
together to display second set of 8 detectors.
(
Press button
B
3 times in quick succession to enable fire test mode see page 4)
