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Tips for Better Evacauations
• Remove schrader cores and depressors with a core removal tool.
• Use shortest vacuum rated hoses with largest diameter available.
• Do not evacuate through hoses with low loss ttings.
• Inspect the rubber seals at both ends of your hoses for damage.
• Change pump oil before and during the job. Change pump oil on-
the-y without losing vacuum with Fieldpiece vacuum pumps.
• When the vacuum pump is blocked, a slow rise that stabilizes may
signify moisture is still present in the system. A continuous rise to
atmosphere indicates a leak. Check hoses, tools, or the system itself.
• Measurements are less representative of the entire system when
the vacuum pump is on because pumping creates a pressure
gradient. Block the pump and allow the system to stabilize before
assuming the measurement is of the entire system.
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