IP67 Waterproof Driver Installation Notes for Mist Maker Modules

An IP67 enclosure protects a power supply against dust and temporary water exposure under defined test conditions. It does not remove the need for correct mounting, grounding, heat dissipation and protected cable joints. In mist maker equipment, the driver often works close to water and at high continuous load, so installation details directly affect reliability.

The safest design keeps the power supply outside the wet chamber whenever possible. When it must be installed inside the equipment enclosure, the items below should be resolved before production.

Match the driver to the module load

Use the supply specified for the module voltage and head count. A driver can show the correct no-load voltage and still be unsuitable if its continuous current capacity is too low.

Check output voltage under full operating load after the system has warmed up. Falling voltage, repeated restart or weak mist can indicate an undersized or overheating power supply.

Provide a heat path

Waterproof potting and sealed housings reduce natural heat release. Mount the driver against a metal surface or in a ventilated electrical compartment where heat can leave the enclosure.

Do not wrap the supply in insulation, place it against foam or cover it with stored cables. Keep the label and case visible for inspection.

Keep cable joints out of the wet zone

The IP rating of the power supply body does not automatically apply to the AC plug, DC connector or wire splice. A poorly sealed joint is often the first point to fail.

Use suitable waterproof connectors or sealed junction boxes and provide a drip loop so water cannot run along the cable into the joint. Do not leave a connector on the bottom of a tank or directly below a mist outlet.

Ground the metal enclosure correctly

Where the supply or equipment uses protective earth, connect it according to the wiring diagram and local electrical rules. Grounding should not rely on paint-covered mounting screws or an uncertain chassis connection.

Keep mains wiring separated from low-voltage DC cables and water-level sensor leads. Use cable restraints so service work cannot pull conductors from the terminals.

Protect against condensation and flooding

Condensation can form inside equipment even when there is no direct splash. Mount the driver above the maximum possible water level and away from condensate return paths.

Design for abnormal conditions such as a blocked drain, failed inlet valve or tilted machine. A waterproof driver should not be used as a substitute for preventing flooding.

Switching and control

For automatic control, switch the driver with a correctly rated relay, contactor or controller output. Consider startup current and the number of supplies being switched together.

Frequent rapid cycling can increase electrical and thermal stress. Use reasonable control hysteresis or staged operation for multi-module systems.

Commissioning checks

Before closing the enclosure, verify polarity, grounding, connector sealing and cable clearance. Run the system at full load and check case temperature, output voltage and mist stability.

After the first extended run, inspect for discoloration, loose terminals, moisture around connectors and abnormal sound. Record the driver model used with each module configuration for future service.

IP67 does not remove the need for a dry installation area

An IP67 enclosure is designed to resist dust and temporary water exposure under defined test conditions. It does not mean the power supply should be installed inside a water tank, left in standing water or exposed continuously to hot condensation. Cable joints, terminals and any field-made connection may have a lower protection level than the sealed housing.

Mount the driver where water cannot collect around it. A vertical surface with the cable entries facing downward is usually easier to protect than a horizontal shelf below a pipe or tank. Leave enough space around the housing for heat dissipation and inspection.

Control heat before it becomes a reliability problem

Waterproof power supplies transfer heat through the enclosure. If the unit is enclosed in a small unventilated box, the external surface may become hot even when the electrical load is within rating. High ambient temperature and continuous full-load operation further reduce thermal margin.

Inspect the complete cable route

A waterproof driver can still fail when water travels along the cable into an unsealed connector. Use drip loops, strain relief and a junction position above the possible water line. Avoid sharp bends and do not allow the cable to rub against a metal edge or fan housing.

Before commissioning, confirm input voltage, output voltage, polarity and the module connection. After the first hour of operation, check surface temperature, connector temperature and whether the mist output is stable.