Introduction
Secomak Gas Boosters are engineered to enhance gas pressure for efficient combustion and reduced pipework size. They are compact, energy-efficient, and quieter than direct drive boosters. With over 40 years of incident-free installations, they offer easy installation, flexible control, and compatibility with building management systems. The package includes necessary pressure switches and controls, requiring only electrical and mechanical connections.

Technical Data
The document details specifications for models GB576, GP576, GB535, GP535, GB539, GP539, GB540, and GP540, including maximum flow rates, pressure lift, outlet pressure, electrical supply, motor specifications, and noise levels. The boosters comply with Machinery, EMC, and Low Voltage Directives.

Dimensional Data
Dimensions for each model are provided, detailing installation and space requirements.

Component Diagram
A diagram lists components such as the booster impellor chamber, control panel, drive motor, and pressure switches, aiding in understanding the booster’s structure.

Performance Curves
Performance curves for models 576, 535, 539, and 540 illustrate the relationship between volume and pressure lift, indicating continuous rating lines.

Booster Installation Guidelines
Installation must be performed by a competent person, adhering to specific guidelines and standards. Key points include:

• Location: Avoid installation in governor or meter rooms, ensure good ventilation, and maintain ambient temperatures below 40°C.
• Ventilation: Ensure adequate high and low-level ventilation, with mechanical ventilation interlocked with booster operation.
• Pipework: Minimize pressure drop and stress on the booster body using anti-vibration mountings and flexible connectors.
• Electrical Installation: Conform to BS 7671, ensure continuous running to reduce wear, and verify correct motor connections and rotation.
• Protection Equipment: Includes low pressure cut-off switches and non-return valves for safety and operational efficiency.

Booster Commissioning
Commissioning should be conducted by a competent person, following specific procedures. Pre-commissioning checks include verifying belt and pulley conditions, ensuring correct booster rotation, and setting inlet pressure switches.

Maintenance and Spare Parts
Regular maintenance is essential for optimal performance, and a list of spare parts is provided for ongoing support.

Guarantee
Secomak offers a guarantee for their gas boosters, ensuring reliability and customer satisfaction.

Pressure Switch Testing and Adjustment
To ensure proper operation, if the low pressure cut-off switch activates before reaching its cut-off pressure, establish a flow on the booster outlet using a separate test appliance or venting the gas safely. Ensure temporary lines are secure and externally armoured hoses are earthed to prevent sparking. The pressure switch should shut down the booster within 3 seconds of reaching the set pressure. If not, adjust the IP setting. After shutdown, the booster should not restart until the IP reset button is pressed. Correct any faults before operation.

Booster Maintenance
Regular inspection of Secomak Gas Boosters is crucial to prevent wear or damage. Replace flexible connectors every five years. Electric motors have sealed-for-life bearings requiring no lubrication, and belt tension is maintained by motor weight. Drive pulleys should be replaced if damaged, and alignment checked. Drive belts should be replaced annually, following a specific procedure to ensure proper installation.

Bearing Assemblies
Replace bearing assemblies every five years regardless of condition. Sealed-for-life bearings require no lubrication. Increased noise or vibration indicates replacement is needed. Follow a detailed procedure for replacing bearing assemblies to maintain gas-tightness.

Spare Parts
Spare parts are available for various models, with part numbers provided. Always quote full nameplate details when ordering.

Guarantee
Secomak gas boosters are tested for gas-tightness and guaranteed for twelve months against defects. Any issues should be reported immediately without dismantling the machine to maintain the guarantee.