GENERAL RULES FOR HANDLING REFRIGERANT GAS
... As gauges are usually fitted to a service manifold, maintenance includes replacing the rubber seals in the ends of the gauge lines, and giving the gauge lines a visual check to look for perishing of the lines, cracks in the outer covering of the lines, and any other signs of mechanical damage. ...
... As gauges are usually fitted to a service manifold, maintenance includes replacing the rubber seals in the ends of the gauge lines, and giving the gauge lines a visual check to look for perishing of the lines, cracks in the outer covering of the lines, and any other signs of mechanical damage. ...