| Enclosure protection | IP65 or higher, assessed under IEC 60529 | IP6X indicates dust-tight protection. IPX5 indicates protection against water jets from any direction. IP65 does not indicate protection against temporary immersion. | Check the permanent product marking, declaration of conformity, and test documentation for the complete assembled enclosure. |
| Installation environment | Indoor or sheltered outdoor area; avoid locations exposed to flooding or standing water unless a separate immersion rating is specified. | Water-jet protection is different from immersion protection. Outdoor exposure also requires suitable materials and cable-entry protection. | Review the installation instructions, drainage design, operating temperature range, and environmental limitations. |
| Fountain basin size | Small: up to 1 m²; medium: 1–4 m²; large: more than 4 m² | Basin volume and surface area affect circulation, fog coverage, refill frequency, and water-treatment requirements. | Measure basin length, width, and operating water depth; calculate volume before selecting the pump and fogging assembly. |
| Water circulation flow | Use the equipment manufacturer’s rated flow; for planning, many decorative systems operate in the approximate range of 5–30 L/min. | Insufficient flow can reduce fog output, while excessive flow can create splash, noise, and unnecessary energy use. | Confirm the pump curve at the required head height and compare it with the nozzle or fogger’s specified flow rate. |
| Fog particle size | For visible suspended fog, select a system with a documented droplet-size range, commonly below 50 μm for fine mist applications. | Smaller droplets remain airborne longer in still conditions; airflow, humidity, and temperature also affect visibility. | Request a technical datasheet stating the measurement method, operating pressure, water quality, and droplet-size range. |
| Water quality | Use clean, filtered water; follow the equipment limit for hardness, dissolved solids, and suspended particles. | Mineral deposits and particles can clog fine fog nozzles, reduce output, and shorten pump service life. | Test the water source and install filtration or a water-treatment system when required by the equipment instructions. |
| Electrical supply | Match the rated voltage and frequency to the installation supply; provide a correctly sized protective device and residual-current protection where required by local rules. | Correct electrical compatibility reduces overheating, nuisance trips, and shock risk in wet locations. | Check the rating plate, power consumption, wiring diagram, earthing requirements, and local electrical code. |
| Cable and gland protection | Use cable glands, connectors, and covers rated for at least the same environmental conditions as the enclosure. | An IP-rated housing can lose its stated protection if cable entries are incorrectly installed or left unsealed. | Inspect seals, gland tightness, unused-entry plugs, cable diameter compatibility, and strain relief. |
| Operating noise | For quiet indoor displays, target a documented sound level of approximately 45–55 dB(A) at the stated measurement distance. | Pump vibration, fan airflow, water impact, and enclosure resonance can affect visitor comfort. | Compare sound measurements made under the same distance, operating mode, and background-noise conditions. |
| Maintenance access | Provide removable filters, accessible nozzles, a drain point, and enough clearance for routine inspection. | Regular cleaning limits scale, biological growth, and blockages that can reduce fog performance. | Confirm cleaning intervals, replacement parts, drain access, and lockout procedures in the maintenance schedule. |
| Safety and operating controls | Include dry-run protection, over-temperature protection, emergency shutoff access, and automatic restart settings appropriate to the site. | These controls help protect the pump and reduce hazards caused by low water level, blocked flow, or abnormal operating conditions. | Test each protection function during commissioning and document the result according to the installation risk assessment. |