6.A1.6 IN-SERVICE INSPECTION AND MAINTENANCE
6.A1.6.1 In-Service Inspection
The general in-service inspection and maintenance requirements will be the same as for electric power operated hoists. The following faults, which are liable to occur to pneumatic hoists, are additional to those listed for electric power operated hoists. Should any of these faults be found during pre-use inspection or upon the interim inspection by the suitably qualified and experienced person, the hoist should be withdrawn from service and referred to a Competent Person:
Motor exhausts water, becomes very noisy in operation or stalls even with light loads.
Brake fails to sustain the load or load descends slowly.
Air line or supply hoses become damaged, leak or show signs of ice forming at joints.
6.A1.6.2 Maintenance
The maintenance programme should be drawn up in accordance with the manufacturer’s instructions and should include the air supply system, at least as far as the filters, lubricators and pressure regulators which are associated with the hoist. The interval between maintenance will depend on the conditions prevailing at the site. Some maintenance functions will only require attention on every other occasion or even longer and the manufacturer’s guidance should be followed in this respect. The air supply line and its associated equipment will require attention at regular intervals, dependent on usage, to drain condensation and to top up the oil level in lubricators.
6.A1.6.3 Thorough examination
The general thorough examination requirements are the same as those for electric power operated chain hoists, but taking into account the additional points in section 6.A1.6.1 In-Service Inspection.