page 44 of 129During 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 thepump in a cabinet or a housing. Make sure ventilationis adequate, especially if the ambient temperature iselevated.• If the pump is installed at an altitude of more than 6500ft (2000 m) above mean sea level, check compatibilitywith applicable safety requirements, and adopt suitablemeasures. There is a risk of the motor overheating dueto insufficient cooling.• Check compatibility with the maximally permittedpressure at outlet and the maximum pressure differ-ence between inlet and outlet ports.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.If pumping condensable vapors (water vapor, solvents,etc.), let the pump run with gas ballast to help purge anycondensation in the pump.Prevent internal condensation, transfer of liquids or dust.The diaphragms and valves will be damaged, if liquids arepumped in significant amounts.Check the pump regularly for external soiling and depos-NOTICE