JR Clancy Traction Drive Hoist

• Used to motorize counterweighted straight lift fire curtains.
• V-grooves in the head block drive the lift line cables to open and close the curtain during normal operation.
• A clutch between the gearbox and the traction head block is held engaged by the fire line. When the fire line is released, the clutch is disengaged, allowing the head block to freewheel so that the curtain closes. The system must be curtain heavy.
• A separate dashpot or speed regulator may be necessary for speed control.
• Track-mounted limit switches limit the travel.
• Operates on 208, 230, or 460 VAC 3 phase power. Please confirm voltage at time of ordering.