· BOSAN
In hot weather, a temperature alarm is not necessarily caused by the cooler alone. Restricted intake, obstructed exhaust, recirculation and other room heat sources can all affect cooling. Inspect the full path from incoming air through the equipment to the room outlet rather than simply checking whether a fan is installed.
Check That Intake Air Can Reach the Equipment
Dust accumulation on louvers, screens and intake filters can reduce ventilation. Check for stored materials blocking the air path and record intake temperature during operation. Outdoor temperature is not a substitute for the temperature entering the machine: recirculating exhaust can make the intake hotter. Keep intake openings away from steam, oily fumes and dust sources.
Assess Exhaust Duct Resistance as Well as Connections
Duct length, bends and outlet design all add resistance. Before modifying ductwork, check the compressor’s permitted exhaust resistance and installation instructions rather than reducing duct area arbitrarily. Discharge hot air away from intake openings. Shared exhaust arrangements must also account for backflow through stopped equipment and simultaneous operation of multiple units.
Combine Cooler Maintenance with Site Inspection
Inspect cooler fouling, fan operation and temperature trends; water-cooled units also require cooling-water checks. Before cleaning or servicing, stop the machine, isolate electrical power and release pressure according to its instructions, ensuring that automatic restart is prevented. Do not remove guards during operation. Use approved cleaning methods and products to avoid damaging fins, seals or electrical components.
Keep Temperature and Alarm Records
Record ambient temperature, machine temperature, load and alarm timing together to distinguish persistent cooling limitations from intermittent issues. After ventilation changes, verify performance under comparable load rather than relying on a single lower reading. Continued abnormal temperature requires qualified inspection, not repeated resets to force operation.
Maintain a Clear Cooling-air Path
Ventilation, cooling and maintenance need coordinated attention. Room dimensions, intake and exhaust locations, and equipment layout help BOSAN assess installation conditions and service access.