Coils can be put under strain during the winter months due to the likely build-up of dirt, mould, pollutants, and more. This build-up accumulates gradually, but over time forces your chiller to work harder, reducing airflow, cooling capacity and pressure.
This results in a loss of performance and efficiency, and therefore increased energy consumption and running costs. For each 10% reduction in airflow, the efficiency of the chiller drops about 5%.
This can all be avoided by regular cleaning and maintenance of the coils. To help the coils remain clean, remove any waste, rubbish and general debris from the surrounding area of the chiller.
Look out for pipe fractures & leaks
Leaks lead to a lot of wasted energy and money, something every business is trying to avoid. Water leaks are generally obvious, and when noticed should be repaired immediately.
As mentioned previously if piping is damaged or fractured as a result of changes to weather conditions and low glycol levels, piping can burst and cause unwanted leaks.
Give your system a frequent winter health check and spot those pipe fractures and take remedial action before it’s too late.
It’s important to ensure the thermal insulation is in good condition and properly fixed to the vessel/pipework – no one can afford to be losing heat in the winter months. It should be checked to make sure there are no condensation leaks, repair and replace the insulation wherever necessary.
Other parts to clean and examine
- Unblock strainers & filters
Scale, corrosion, biofilm, weld slag, dirt, iron oxides, and suspended solids can cause serious operational problems when trapped in strainers. Blocked strainers will cause pipe blockages, failed pumps and then potential freeze issues. Prevent this harmful clogging by cleaning the strainers regularly.
- Protective condenser fin/coil coating
After the fins and coil have been cleaned up, examine the fin coating. The condenser fins and coil may have been treated with an anti-corrosion protective spray, so check to ensure this isn’t damaged.
When cleaning the coils don’t use a hard or wire brush, a soft hand brush or purpose made narrow coil brush should be used to prevent damage to the coating.
Wash down all panels and steel work and repair/treat when necessary. Ensure there isn’t any water accumulation around and under any supporting structure. Any dirt or mould left untreated or cleaned off will become permanent and may