Maintenance should be carried out at least 2–3 times per year, preferably by a qualified technician.
Depending on the application, hot water condensate pumps can be affected by airborne contaminants such as human skin (in air conditioning systems) or mineral/calcium buildup (in humidifier applications).
Always follow the manufacturer’s maintenance instructions for your equipment. Additionally, there are commercially available chemical solutions that help reduce debris buildup on cooling coils and discharge hoses.
Most hot water condensate pumps are reservoir pumps and should be compatible with chemicals designed for removing mineral or calcium buildup.
As an alternative to commercial chemicals, you can also use white vinegar or citric acid diluted with water.
Removing Fat-Based Debris from AC Units
If the pump is installed on air conditioning equipment, part of the maintenance should include removing fat-based debris from the cooling coil and drain pan. This should be done before cleaning the reservoir.
Disconnect the power supply to the equipment and pump.
Using a spray bottle, mix standard dish soap and hot water.
Access the cooling coil and drain pan, then spray the mixture across the entire coil, ensuring full coverage.
Spray the drain pan if accessible.
Mix additional hot soapy water and fill the reservoir (do not overflow).
Let stand for 30 minutes.
Reconnect the pump power supply.
Rinse the spray bottle, fill with clean hot water, and spray the coil and drain pan.
If the pump does not start, pour more hot soapy water into the reservoir until it activates.
Reconnect the equipment power supply.
This process should remove fat-based debris from the cooling coil, drain pan, and reservoir.
Mineral/Calcium Removal
Always read and follow the product instructions.
Ensure the pump has just completed a full discharge cycle. If unsure, pour clean water into the reservoir until the pump operates.
Mix equal parts white vinegar or citric acid with water, enough for at least two discharge cycles.
Pour the mixture into the pump until it operates (to avoid dilution).
Disconnect power to the machine and pump to prevent operation during soaking.
Pour the mixture into the reservoir without overflowing.
Allow the mixture to stand for 30–60 minutes to break down mineral/calcium buildup.
Switch the pump supply back on and ensure it completes a cycle, adding clean water if necessary
