GAS CONTROL UNIT
Supply by automatic switching and monitoring
GAS CONTROL UNITS ensure safe and continuous gas supply to all areas of the hospital through automatic gas source switching and monitoring.
The execution 2CD allows to connect up to two manifolds.
The execution 3CD allows to connect up to two manifolds and has a cold carburetor connection.
The execution 3FCD allows to connect up to three manifolds.
(Function GAS CONTROL UNIT 3CD)
1st stage reduction
In a first stage, the respective gas sources are reduced to a pressure value of 8 to 11 bar. The pressure of the primary source (VIE) is reduced to approximately 11 bar. The high pressure of the cylinder banks is reduced by the main pressure regulators to a pressure of approximately 8 to 9 bar. All gas sources are connected to the main block via non-return valves. The two cylinder bank inlets are controlled by solenoid valves.
When the primary gas supply (VIE) fails, there will be an automatic changeover to one of the two “stand by” cylinder banks by releasing the respective solenoid valve. Which cylinder bank will become the duty bank in that event can be preset at the electronic Control and Monitor Panel. If the running cylinder bank fails before the primary supply has been restored, there will be an automatic change over to the remaining reserve cylinder bank. The Gas Control Unit will always change back to the primary supply once it has been restored.
2nd stage reduction
The gas flow of the running supply source is directed from the main block to the two, parallelly arranged line pressure regulators. The pressure is then further reduced to the desired pipeline pressure. It is not necessary to have both line pressure regulators operating at the same time, as the Gas Control Unit is designed to work with only one line pressure regulator. Both line pressure regulators are therefore fitted with isolation valves on the inlet and outlet side that allow the individual selection of the running and reserve regulator. This also allows the overhaul or replacement of a line pressure regulator without interrupting supply to the pipeline system.
Supply to the pipeline system / Emergency supply
The Gas Control Unit is connected to the pipeline system via the main shut-off valve. The Gas Control Unit allows for an additional fourth supply source to be connected. This emergency supply source can be manually activated by closing the main shut-off valve and opening the emergency supply inlet valve.
A failure of the electricity supply does not disrupt the supply of gas to the distribution system. Both solenoid valves of the cylinder banks will open, thus making the secondary and reserve supply available. The Gas Control Unit is designed so that only one source at a time supplies gas. The sequence will be in a descending order starting with the gas source of the highest pressure after first stage reduction. Please refer to the recommended settings of the first stage pressure regulators.
The GKE 2CD and 3FCD come without a carburettor connection. The GKE 3FCD has a third connector for a manifold
Electronic Control and Monitor Panel
manual switching to a bottle side possible
current, digital pressure display
Assembly Plan GKE-3CD
Door back with open display cover
Overview 1 - 12
Electrical Connection Box
Pressure transducer high-pressure re
Pressure Gauge For Pressure Regulator VIE inlet
Pressure transducer VIE inlet
High-Pressure Regulator and Inlet,
Cylinder Bank 1
Pressure Gauge High-Pressure Regulator 1
Pressure Transducer High-Pressure Regulator 1
Solenoid Valve Cylinder Bank 1
High-Pressure Regulator and Inlet,
Cylinder Bank 2
* only GKE-3CD ** only GKE-3FCD
INSPECTION & MAINTENANCE
Inspection: The Gas Supply System has to be inspected on aregular basis by qualified and authorized personnel. This inspection should include function and pressure conditions. Furthermore the visual and auditory signals should be tested.
Maintenance: The Gas Control Unit should be maintained on a yearly basis by qualified and authorized personnel or by an authorized specialist company. Maintenance should include examination of the pressure conditions and a checks for leakage. At least all 5 years, diaphragms and seals should be repalaced. During maintenance, the pipeline distribution system can be supplied using the emergency inlet.
You can discover all the information of our products:
- tender texts
- instructions for use
- wiring diagrams
- instructions for mounting
- failure analysis / malfunction cause / fault isolation / repair
- instructions for adjustment
- acceptance reports
- significant maintenance steps
- protocol according to EN standard
- maintenance interval
- special equipment