Location: mount the pump where there is ventilation and no corrosive gas; where it sits inside a machine, leave room for heat to escape. A high ambient temperature shows up directly in the body temperature during continuous duty.
Piping: size the inlet bore to the flow, keep the run short and use few bends. Where the line sits below the pump, allow for condensate returning and fit a separator if needed. Joints must be tight: a small leak turns straight into a lower working vacuum.
Exhaust: never blank the discharge, and never run it into an undersized line. Back pressure at the discharge raises the working vacuum level that can be reached at the inlet.
At first run
- Confirm supply voltage and frequency (for example 220/240 V, 50 Hz, as ordered) and check that earthing is sound.
- Run on no load and listen for even running and any abnormal vibration; check body temperature by hand.
- Connect to the system and measure whether the working vacuum level meets the process requirement.
If the figure is not reached, check in this order: leaks first (joints, lines, valves), then line bore and whether the filter is blocked, then whether the pump capacity actually matches the system demand, and only then the internals of the pump.
Keep a record: log the trend of capacity and vacuum level as the basis for maintenance decisions, and change filter elements on differential pressure rather than on a fixed number of days.