Recommended service intervals for VACUUBRAND oil-free vacuum pumps used as server pumps for a VACUU•LAN® network are 10,000-15,000 operating hours. In a lab that uses vacuum 40 hours a week, the first recommended diaphragm change — an operation that takes less than an hour — occurs some 5 years after initial use. There are no regular oil changes to schedule and remember — or any oil changes, for that matter! For a lab that uses vacuum less intensively, the systems are practically maintenance free.
Fluoropolymer diaphragms in the VACUU•LAN® pumps are chemical resistant, and so tolerate well the vapors common in a science building vacuum system. Contrast that steady reliability with the regular maintenance needed in the liquid ring pumps common in central vacuum system pumps, or the susceptibility to corrosion typical of claw pumps when used for scientific vacuum systems, and the dramatically lower lifetime costs of operation with a VACUU•LAN® network are clear.
Besides the ease of installation associated with the use of PTFE tubing and compression fittings instead of copper tubing, the PTFE tubing networks ae much more chemical resistant than copper. Corrosive vapors sucked into copper vacuum lines corrode those pipes over time. The resulting pinhole compromise vacuum in the system by allowing air to leak in and consume pumping speed. The local networks plumbed with PTFE tubing not only permit deeper vacuum at each vacuum port, but also protect the tubing network from corrosion, ensuring long, reliable service.