In the modern commercial and residential developments of KL and PJ, a Dual Purpose System is the most cost-effective and space-saving M&E solution. These systems serve two critical, distinct roles: daily Environmental Ventilation to remove vehicle exhaust (CO) and emergency Smoke Control to provide life-safety during a fire. EKG M & E Sdn Bhd specializes in the engineering and integration of these complex "split-logic" systems to ensure 100% compliance with BOMBA and UBBL standards.
During normal operations, the system focuses on air quality and energy conservation.
Contaminant Removal: The fans run at a "Low Speed" (typically 20–30% capacity) to continuously flush out Carbon Monoxide (CO) and Nitrogen Dioxide (NO_2).
Demand Control: Using Variable Frequency Drives (VFDs) interlocked with CO sensors, the fans only ramp up when traffic increases, such as during morning or evening peak hours in KL office towers.
Moisture Control: Consistent low-velocity airflow prevents humidity buildup and "sweating" on basement concrete surfaces.
Upon activation by the Fire Alarm Monitoring System (FAMS), the system's logic completely shifts.
100% Capacity Override: The VSD ignores all energy-saving setpoints and forces the fans to maximum RPM.
High-Temperature Endurance: Our dual-purpose axial fans are certified to run for 2 hours at 250°C, maintaining structural integrity while extracting superheated smoke.
Path of Egress Protection: The induction jet fans "shove" smoke toward the main extract shafts, keeping the "smoke layer" high above the floor so that occupants can see exit signs and breathe while evacuating.
Dual-Winding or VFD-Driven Motors: We use specialized Class H insulated motors that can handle the rapid transition from low-speed daily torque to high-speed emergency thrust.
Motorized Fire & Smoke Dampers: These dampers automatically reconfigure the airflow paths during a fire, closing off non-affected zones to concentrate extraction power on the fire floor.
Fire-Resistant Cabling (FRC): All dual-purpose fans are wired with FRC or MICC cables, ensuring that power is not cut off by the very fire the system is trying to control.
Logic Control Panels: Our custom-built panels feature "Fire Priority" logic. Even if a CO sensor fails or a manual "Stop" button is pressed, the Fire Alarm signal will always take absolute command of the system.
Engineering-Led Integration: As an M&E firm, we manage the synergy between the mechanical fans, the electrical switchboards, and the fire alarm interface. We ensure there are no "communication gaps" during an emergency.
BOMBA & UBBL Certification: We provide the mandatory "Cold Smoke" testing and airflow velocity reports required for your annual Fire Certificate (FC) in Kuala Lumpur and Petaling Jaya.
Cost & Space Optimization: By using one set of fans for two jobs, we reduce your initial capital expenditure (CAPEX) and free up valuable ceiling space for other services like sprinklers and cable trays.
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