page 11 of 106necessary to avoid a reduction of ventilation.Do not place the pumping unit on soft surfaces (e.g., rub-ber foam) during operation. This may reduce or block thefans’ air supply. Keep a minimum distance of 8 in (20 cm)between the cooling fan and surrounding items (e.g., hous-ing, walls, etc.). Do not cover the pumping unit.Use only hoses at the inlet and outlet of the pump withan inner diameter at least as large as the diameter of thepump’s tubing (to avoid overpressure at the outlet, andreduction of pumping speed at the inlet).Connect hoses gas tight at inlet and outlet of the pump.Secure coolant hoses at the hose nozzles (e.g., with hoseclamp) to prevent their accidental slipping.Allow the equipment to equilibrate to ambient temperatureif you bring it from cold environment into a room prior tooperation. Notice if there is water condensation on coldsurfaces.Check liquid level in catchpots regularly and drain con-densate in time to avoid overfilling. A level sensor can bepurchased to trigger an alarm when the catchpot is full(see ”Accessories”, pg. 79).Ensure that no foreign objects can be drawn into thepump.Comply with all applicable and relevant safety require-ments (regulations and guidelines). Implement the re-quired actions and adopt suitable safety measures.Ambient conditions+ Do not use this product in an area where it can fall orbe pulled into water or other liquids.➨ Do not reach for this product if it has fallen into liquid.There is a risk of deadly electrical shock. Unplug thesystem immediately.