Chiller maintenance is the process of regularly inspecting commercial, industrial or residential chillers to prolong equipment life and maintain their efficiency. Chiller maintenance and repair vary depending on the type of chiller; reciprocating, centrifugal, screw, and scroll. However, you should always carry out preventive maintenance. To avoid increased costs and prevent output below the bare minimum, you must maintain the right working conditions. The chillers can either be air-cooled or water-cooled.
Maintenance technicians use a repair checklist as an assessment tool to evaluate how the conditions are for industrial and commercial Chiller during regular inspections. To check for daily temperature readings, operators and maintenance technicians use the chiller repair and maintenance checklist. This list also acts as a preventive measure to avoid any breakdowns. Sometimes even technicians and operators neglect regular inspections and maintenance during the inspections. They must be diligent and do a proper job before some small problem they would have noticed if they were keen would end up becoming worse. The checklist can inspect pressure and temperature gauges, detect potential failures, and prevent short cycling. Technicians can follow the procedure while filling the list. First, examine the chiller area and its general condition, and the functions it was intended to do. They can assign the repairs with due dates and priority levels, attach photos of repairs and damages. Complete the check with a digital signature and storing the maintenance log in the cloud.
More often than not, some signs are missed, which would prevent the Chiller from working efficiently like it ought to. Here are the three most neglected signs when it comes to repairs;
High Approach Temperature
If the temperature difference between the supply water and return water is higher than intended, contaminants may have accumulated in the evaporator and condenser tubes.
Consider improving your current water treatment system or chemically treat chiller tubes when cleaning them. Since heat-transfer efficiency directly correlates with chiller efficiency, it is crucial to keep all tubes free from sludge, scale, and algae.
Gradual Pressure Increase and reduce chiller efficiency?
If condenser pressure steadily rises within the month, water flow rates may be incorrect, which reduces the chiller’s efficiency.
Calibrate the control system by periodically removing accumulated debris on internal parts with a high-velocity, low-pressure blower. Those that do not condense trapped air and moisture also increases condenser pressure and compressor power, resulting in more power consumption.
Chiller rental Limited Refrigeration/Cooling Load
If a Chiller consistently fails to reach a full refrigeration load, the oil may have migrated into the refrigerant, which causes improper refrigerant levels.
Changes in soil characteristics may mean significant compressor wear. When the liquid refrigerant enters the compressor and evaporates, it decreases cooling capacity, overloaded motor condition, and possible compressor impeller damage.
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