Gas Interlock Systems cut off gas flow in the event of kitchen extract fan failure. This is now a mandatory requirement in most commercial kitchens.
Sensors placed either side of the ductwork fan monitor air pressure. They are connected to an air differential switch which is activated when the pressure difference changes. Alternatively, the current taken by the fan can be monitored by a fan power sensor. The 230V GIS monitors this switch/sensor and in the event of fan failure will close the gas solenoid and cut off the gas flow to kitchen appliances.
When is a Gas interlock system a mandatory requirement?
- - On installation of a completely new exctraction/ventilation canopy.
- - On installation of a completely new gas pipework run
- - On installation of a completely new cook line or layout
- - With any fitting of Category 'B' equipment e.g. combination ovens, deep fryers, grills, charcoal griddles. This includes replacements to an existing layout.
Important documents/notes for your consideration and reference:
- - Corgi technical bulletin - TB 130 BS 6173
- - Gas Supply (installation and Use) regulation GSIUR27-4
- - HSE Information sheet No. 23 - Gas Safety in Catering and Hospitality
- - HSE CIS Sheet No. 10 - (Rev. 1)
G04 & G05 Gas Interlock System Controllers
(Including Fan Speed Controllers) Key Points:
- - All in one box solution - more competitive solution to buying seperate components, save on wiring individual components
- - Each model can monitor 2 fans at once
- - Anti back pressure feature on all models
- - Easy to clean and protected to IP56
- - Manufactured in the UK and Ce marked
- - Two year parts guarantee
Features:
- - All pre-wired internally
- - Complete with fan speed controllers
- - Connections for remote emergency stop and fire panel
- - Large heatsink increases life of unit
- - Fan soft start feature
- - Built in emergency stop button
- - Audible alarm
- - Warning: G04 & G05 are only suitable to operate with electronically controlled fans of joint ampage below 15A only
G04:
- - Built in fan speed controllers
- - Connections for air differential switches
G05:
- - Built in fan speed control
- - Built in fan current sensors
