Crawford Controls Ltd. products

Using Optidrive HVAC to reduce fan/pump speed during periods when maximum flow is not required provides the maximum possible energy savings. A 20% reduction in speed can reduce the energy consumption by up to 50%.

Using Optidrive HVAC to reduce fan/pump speed during periods when maximum flow is not required provides the maximum possible energy savings. A 20% reduction in speed can reduce the energy consumption by up to 50%.

Using Optidrive HVAC to reduce fan/pump speed during periods when maximum flow is not required provides the maximum possible energy savings. A 20% reduction in speed can reduce the energy consumption by up to 50%.

Using Optidrive HVAC to reduce fan/pump speed during periods when maximum flow is not required provides the maximum possible energy savings. A 20% reduction in speed can reduce the energy consumption by up to 50%.

Using Optidrive HVAC to reduce fan/pump speed during periods when maximum flow is not required provides the maximum possible energy savings. A 20% reduction in speed can reduce the energy consumption by up to 50%.

24v units for use in Security and Fire Detection Systems. Fully monitored for mains fail, battery not charging or output failure. Will charge various sizes of sealed lead acid batteries. Standard 1,3,5,10 and 20 amp models available.

3 Position Fireman`s Override Switch With Hinged Lid. The 3 position rocker switch is the ideal solution for use with our lobby vent smoke ventilation system. The switch allows manual override operation of AOV windows for fire officer control.

This presentation describes in detail the Crawford Controls Smoke Vent Control System. The system is designed to cater for various configurations including powered ventilation as well as natural ventilation systems. The controls consist of a number of outstations that are essentially Single Zone Smoke Vent Panels. These usually sit at each Floor Level of a High Rise Building and are connected to devices on the particular floor. When powered by Local or Common Battery Backed DC Supplies and interconnected these outstations form a complete Smoke Ventilation Control System.

The all new Optidrive P2 offers the perfect combination of high performance together with ease of use to allow even the most demanding applications to be tackled easily. Designed for fast installation and commissioning, Optidrive P2 provides the most cost effective solution for industry. All Optidrive P2 units provide 150% overload for 60 seconds as standard, ensuring each drive is suitable for Heavy Duty applications, whilst the IP55 enclosed versions ensure the drive is tough enough to survive in industrial environments. Extensive I/O and communications interface capabilities ensure the drive can be integrated quickly and efficiently into a wide variety of control systems with the minimum commissioning time, ensuring rapid start up. Invertek’s simple parameter structure, and carefully selected factory parameter settings ensure that commissioning time is kept to a minimum.