Technical Information

Operational Options

There are four alternative types of roller shutter operation that can be selected, as described below.

The space requirements tabled serve as a guideline only.
Refer to a consultant for more detailed specifications.

PUSH UP OPERATION

Push-up operation is also known as self coiling or hand operation. The weight of the curtain is counter balanced by the self coiling action of the spring loaded barrel. The door is lifted open by using handles fitted to the bottom rail or T-Section.

This type of operation is suitable for relatively small openings, not exceeding 7.5m² or approximately 3000mm wide x 2500mm high.

Table : Space Requirements (refer to diagram)

Push up operation

Click to enlarge

Height of Opening H

Dimensions of Overhead Box A

Up to 1500mm 285mm

1500mm to 2500mm 335mm

Note: these space requirements are applicable to all widths within the total m² limitations.
CHAIN OPERATION

Chain operation is suitable for roller shutters between 8m² and 30m². These are operated mechanically by an endless chain through a spur reduction gear fitted to the spring loaded barrel.

Table : Space Requirements (refer to diagram)

Chain operation

Click to enlarge

Height of Opening H

Dimensions of Overhead Box A

Up to 2900mm 335mm

3000mm to 4000mm 360mm

4000mm to 5000mm 400mm

Over 5000mm On Request

Note: these space requirements are applicable to all widths within the total m² limitations.
CRANK OPERATION

A manually operated reduction gearbox can be installed in place of the endless chain. A bevel gear type cast iron gearbox operated by a crank handle is used on most applications. Larger roller shutter doors may require proprietary worm reduction gearboxes. Generally, the cast iron type of gearbox is applied to doors not exceeding 25m² in area. Crank operation can also be specified instead of chain or push-up operation should the user so prefer.

Table : Space Requirements (refer to diagram)

Crank operation

Click to enlarge

Height of Opening H

Dimensions of Overhead Box A

Up to 2900mm 335mm

3000mm to 4000mm 360mm

4000mm to 5000mm 400mm

Over 5000mm On Request

Note: these space requirements are applicable to all widths within the total m² limitations.
ELECTRICAL OPERATION

Electric operation is recommended for large doors in frequent operation, although it can be specified for any size door. Supply includes the electrical motor reduction gearbox, remote push button starter, limit switch assembly and, if required, an electro-magnetic brake. The unit is fitted with an emergency hand operator for use in the event of a power failure. Many additional features can be supplied, for example card readers, inductive loop circuits and automation.

Table : Space Requirements (refer to diagram)

Electrical operation

Click to enlarge

Height of Opening H Dimensions of Overhead Box A

Up to 2900mm 335mm

3000mm to 4000mm 360mm

4000mm to 5000mm 400mm

Over 5000mm On Request

Note: these space requirements are applicable to all widths within the total m² limitations.