page 34 of 106During operation+ Vent and dispose of potentially dangerous gases orvapors at the outlet of the pump appropriately.• Due to the high compression ratio, the pump might gen-erate overpressure at the outlet. Check pressure com-patibility with system components (e.g., exhaust tubingor exhaust valve) at the outlet. Ensure that the pumpoutlet is neither blocked nor restricted.Maximum ambient temperature: 104 °F (40 °C)Check the maximum temperatures, if installing the pump ina cabinet or a housing. Make sure ventilation is adequate,especially if the ambient temperature is elevated.If pumping condensable vapors (water vapor, solvents,etc.), let the pump run with gas ballast to help purge anycondensation in the pump.If the pump is installed at an altitude of more than 3300 ft(1000 m) above mean sea level, check compatibility withapplicable safety requirements, especially IEC 60034.There is a risk of the motor overheating due to insufficientcooling.Do not start the pump, if the pressure difference betweeninlet and outlet ports exceeds max. 16.0 psi (1.1 bar).Attempts to start the pump at higher pressure differencemay cause stalling and damage of the motor.Check compatibility with the maximally permitted pres-sure at inlet and outlet ports.Operation with silencer at the outlet: Operating the pumpat a high inlet pressure or pumping dusty gases for a longtime may cause clogging of the silencer. Check the si-lencer regularly and replace if necessary.Prevent internal condensation, transfer of liquids or dust.The diaphragms and valves will be damaged, if liquids areNOTICE