Air operated hoists at work in spray booths

The handling of components for spray booth coating operations, had previously been undertaken by two manually operated chain hoists on an overhead rail running the length of the booth.

ELS recommended JDN Profi 2TI air operated hoists. The choice of air operation throughout (for both lifting and load horizontal movement functions) ensured that the new hoists covered NEC ruling requirements to meet or exceed NFPA 33 standards. In fact the JDN products has a European rating EX II 2 GD IIA T4 / II 3 GD II T4 as standard, providing safe operation within hazardous or potentially explosive atmospheres as can exist in spray painting operations. Even higher safety ratings can be accommodated where increased spark protection is specified to achieve the EX II 2 GD IIC T4 safety standard. 

The JDN hoists operate within an air pressure range of 4 or 6 bar, and when being used at the higher pressure rating a lift capacity of 2t per hoist is available, combined with a full load lift speed of 2.7m/min being achieved. All lift and load traverse movements are undertaken using pendant controllers (single handed operation), with a pendant drop length provided to ensure that it can fully clear any freshly sprayed objects as well as providing a good working clearance for the spray gun operator. The hoists are suspended from trolleys running on the overhead standard beam, so providing the horizontal load movement. Each hoist is fitted with an airline filter regulator unit and a steel chain retention box, together with a muffler/oil collector to prevent spent oil mist dripping onto newly painted products.

The JDN Profi TI range of hoists are robust and include units with individual lift/load capacities from 250kg to 100 tonnes. These hoists may be used for oblique pulling under special safety provisions. In addition, hoists can be fitted with optional trolleys which run in an overhead support beam to provide horizontal load movements. Trolleys available include manual, reel chain or motor operated versions, depending upon the degree of mechanisation required.

The lift/lower and travel movements where incorporated are controlled with pendant hand controls. 3m lift chains and pendant control air supply leads are provided as standard, with other specific lengths available to suit user requirements. Optional operating systems are available including rope control, together with sensitive, single speed and multi function controllers, as well as both remote control and electropneumatic interface units.

These JDN products are suitable for safe operation within hazardous areas and provide lube-free operation with no downtime. They are also 100% duty rated, with unlimited duty cycle capability and featuring fail-safe starting.