NEW: hydraulic brake for M4ACC gear units

The Machinery Directive 2006/42/EC dictates that machinery brought on the EU market must be designed and constructed so that it can be operated, adjusted and maintained without putting persons in danger. In order to comply with these requirements, Hansen Industrial Transmissions (HIT) has developed a hydraulic brake system for its M4 ACC gear units, which allows the user to safely slow down the gear unit and condenser fan and keep them at standstill during maintenance activities in dry cooling towers. This way, HIT now offers its customers a tool to avoid the risk of maintenance personnel being injured due to ‘windmilling’ (an idle fan which starts rotating due to airflow and thus driving the gear unit).

Advantages of the hydraulic brake for M4 ACC gear units:- Limited investment: a single brake-kit (2 hydraulic brake cylin-

ders with brake shoes and a hand pump with hose) can serve a whole batch of fan drives (mobile solution).

- This hydraulic brake system is unique in that the braking force not only holds the fan when at standstill, but is capable of decelerating it to a safe stop within a limited braking time (max. motor speed to be confirmed by HIT per project).

- Possibility to demount the motor while the hydraulic brake is in operation.

- Limit switches (optional) can be installed on the hydraulic brake cylinders to detect their position and prevent the drive from starting while the brake is engaged.

- A stationary solution can be offered when requested: 2 hy-draulic brake cylinders and brake shoes assembled to each gear unit, to avoid having to (un)install these on-site. This solution allows keeping several gear units at standstill at the same time. The number of hand pumps can be chosen freely.

- The brake cylinders are provided with an additional mechani-cal locking mechanism.

- Currently installed M4 ACC gear units can be retrofitted to suit the hydraulic brake system.

* Patent pending

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Hansen Industrial Transmissions nvLeonardo da Vincilaan 12650 Edegem - AntwerpBelgium w

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fax +32(0)3 450 15 99

Hansen Industrial Transmissions nvLeonardo da Vincilaan 12650 Edegem - Antwerp - Belgium

DELIVERY ADDRESS:

Terelststraat 208B-2650 Edegem (Antwerp)Belgium

HA

NSEN INDUSTR

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NEW: Hydraulic brake* for M4 ACC gear units

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