Workshops using high pressure hydraulics should make sure safe work methods are employed, hydraulic lifting specialist Enerpac says
August 30, 2012
Workshops using high pressure hydraulics should make sure safe work methods are employed, hydraulic lifting specialist Enerpac says.
The company says while hydraulics can make life easier in workshops, the high pressures involved demand precautions and safe work practices to protect people and equipment.
With pressures of up to 700 Bar, hydraulic tools can often be incorrectly used, putting not just the operator but also bystanders at risk of injury.
Enerpac says precautions such as wearing appropriate clothing, including safety boots, gloves and glasses can prevent many injuries, while operators should also be properly trained in how to use the equipment.
Another area is the use of properly seated jacks, with a base plate under the jacking system to prevent holes being punched into the floor from the reactive force, as well as making sure the jack is not tilted.
Enerpac also warns of the risk to equipment from dirt and heat, saying dust caps will keep grit out of seals, while any heat above 65 degrees can degrade hydraulic fluid. It says a piece of sheet metal or even a blanket should be used to prevent heat transfer.
Other precautions for safe operation include not standing in the line of force and not using extension handles, as these can tip the jack off balance, bringing the whole job crashing down.
Enerpac also suggests a maximum of 80 percent of lifting capacity be used to prevent accelerated wear and premature component failure. It also makes pumping easier.
Equipment should only be lifted by the cylinder and pump to prevent hose damage, while the hose should never be stretched taut prior to pressurising. The company says the hose shortens as more pressure is applied, which can lead to blowouts.
As a final hint for safe operation, Enerpac says choosing the right cylinder and pump for the job with sufficient working load is vital as it allows the hydraulic system to work to capacity without stressing components.
