Several models of Red Rooster hoists can also be classified to BS EN 1127-2:2014 for equipment being used in mining. These hoists can be used according to Equipment Group I Category M 2 where equipment is intended to be de-energised in the event of an explosive atmosphere. The low operating temperatures along with the internal operating pressure of 4 - 6 Bar means that these hoists have a high level of protection and can also be disconnected or made safe, in the event of an explosive atmosphere. ATEX designation - Ex h I Mb.
The areas where dust deposits can build up are limited on air hoists body due to the shape of the air motor and gearbox. The TMH models have a very low running temperature so even with a build up over the motor the surface temperature does not reach close to 150°C. Other models such as TCR and TNC hoists do not reach the maximum permissible temperature of 150 ° C for coal dust.
When specifying equipment for use in an explosive atmosphere the end user should give a full specification confirming the – Equipment group, Category, Explosive Atmosphere, and Temperature class. If this is not supplied the working area conditions, details of the gas, how often gas is present, details of the dust and ambient temperature should be supplied. This allows the Explosive Protection Level (EPL) to be confirmed when the ignition sources are identified. Where we do not have all the required information we will specify the ATEX rating of the equipment offered.
GAS - Ga, Gh + Gc
DUST - Da, Db + Dc
The ATEX technical file covering our range of equipment we manufacture is filed with Lloyds Register – Lodgement number PRJ1110010199/1.
Red Rooster Lifting hoists are heavy duty machines used around the world and are suitable for use in explosive atmospheres. They are used extensively in the shipbuilding, mining, offshore, onshore, petrochemical, chemical, pharmaceutical industries and other potentially hazardous areas.