To clean the cooling fan of the WPDKS155-60-4KW worm gear reducer, you need to follow the process of 'power outage safety → cleaning by parts → inspection and reset'. The core is to completely remove dust and oil while avoiding damage to the fan components to ensure that the cooling efficiency is restored after cleaning.
1. Preparation before cleaning: clarify tools and safety matters
Before cleaning, be sure to prepare tools and take safety precautions to avoid electric shock or component damage.
Tools and Materials List
Basic tools: Phillips screwdriver (used to remove the fan guard), compressed air gun (pressure ≤ 0.4MPa, used to blow away dust), soft brush (made of nylon, soft brush head to avoid scratching the fan), rag (pure cotton cloth without fiber shedding, can be dipped in a small amount of neutral detergent, such as detergent dilution).
Protective equipment: insulating gloves (to prevent electric shock), goggles (to prevent dust from splashing into the eyes). If the fan is heavily oily, oil-resistant gloves are required.
Safety precautions
You must first cut off the main power supply of the reducer, unplug the plug or turn off the circuit breaker to ensure that the fan is completely powered off (to prevent hand injuries caused by misstarting).
Wait for the fan and reducer housing to cool down to ambient temperature (≤40°C) to avoid skin burns caused by high-temperature components.
If the fan and motor are designed to be integrated, it is forbidden to flush them directly with water (to prevent the motor from being short-circuited by water), and only use dry or semi-dry tools for cleaning.
2. Core cleaning steps: remove dirt by parts
Step 1: Remove the fan guard (if applicable)
Observe whether there is a metal shield on the outside of the fan (most WPDKS155 reducer fans have a shield to prevent foreign objects from being drawn in). The shield is usually fixed on the fan bracket with 2-4 screws.
Use a Phillips screwdriver to unscrew the fixing screw counterclockwise, gently remove the shield, and place it on a clean surface (to avoid dust on the surface, which may contaminate the fan during subsequent reassembly).
Check whether the mesh inside the guard is blocked. If there is dust accumulation, use a compressed air gun to blow air from the inside out (to avoid dust spreading toward the motor), or wipe the mesh with a soft brush to remove the blockage.
Step 2: Clean the fan blades
Dry dust cleaning : If there is only dry dust attached to the fan blade, use a compressed air gun to blow the fan blades one by one in the direction of rotation (from the root of the blade to the edge). Adjust the pressure to 0.2-0.3MPa to ensure that the dust on the front and back of the blade and in the gaps between the roots is completely blown away (high pressure can easily cause the fan blade to deform, so the pressure needs to be controlled).
Oil pollution cleaning : If the fan blade is contaminated with oil (mostly lubricating oil leaked from the reducer or environmental oil), dip a rag into a small amount of neutral detergent (dilution ratio 1:10, water: dishwashing liquid), twist until it is semi-dry (no water dripping), gently wipe the surface of the fan blade, focusing on cleaning the oil accumulation areas (such as blade edges and roots).
Detailed cleaning : The gap between the fan blade and the motor shaft is easy to accumulate dust. Use a soft-bristled brush head to insert into the gap and gently scrub. Then use a compressed air gun to blow off the dirt under the brush to avoid dirt accumulation causing unbalanced fan operation.
Step 3: Clean the fan motor housing and heat sink
The WPDKS155 reducer fan motor housing has multiple heat sinks. Use a soft brush to gently scrub along the direction of the heat sink gap (perpendicular to the heat sink) to remove the attached dust. If the dust in the gap is thick, you can first blow it with a compressed air gun, and then use a brush to clean the residue.
Wipe the surface of the motor casing with a dry rag to remove floating dust. If there is any oil stain, wipe it with a semi-dry neutral detergent rag. After wiping, wipe it again with a dry rag to ensure that there is no detergent residue (to prevent corrosion of the motor casing).
Check the motor terminals (if exposed) and use a dry compressed air gun to blow away the dust around the terminals. Do not wipe with a wet rag to avoid moisture entering the terminal box and causing a short circuit.
