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, If not, air exposure can cause premature chiller failure. o Check the crankcase pressure on recip compressor (especially in critical charge systems). , If the crankcase's pressure increases, it may set off an ammonia alarm. The shaft seal is lubricated by oil; a lack of operation will cause the seal to dry out. 3) INSPECT ALL MACHINERY COMPONENTS o Conduct a thorough visual inspection of all the machinery components. , Look for signs of wear and tear as well as corrosion. , Keep an eye out for two things in particular: there may be bird nests in the condensers, and rodent damage on wiring. o This is a great time for some spring cleaning! , Clean and prime/paint any rusted surfaces, clean up and repaint the floor, air and clean out header trenches. o Keep an eye on the condition of insula- tion in the plant room—always alert your service provider if this is in disrepair. o Check your belts and pump couplings. Slacken the belt-driven compressor belts if you haven't done so already. o Perform any compressor servicing needed: overhauls, oil changes, or grease bearings. o Check the compressor cooling systems. o This is also a good time for condenser maintenance: clean the water tank and spray nozzles, service belts and bearings. o Run the pumps occasionally to keep the seals in good shape (but only run pumps that are full of fluid). 4) SAFETY EQUIPMENT SYSTEMS o Leave your refrigerant leak detector running and check it daily. , Make sure the leak detector is up-to- date and calibrated properly. o Check your control systems and calibrate your sensors. o Service and maintain your compressor room exhaust fan. o Ensure your exit doors are unobstructed and properly serviced and maintained to guarantee a safe and timely exit. o Inspect your fire extinguishers (and certify you have the appropriate number). o Regularly flush your eyewash station. o Check the lighting in the compressor room; a closed plant is the ideal opportunity to upgrade to LED lighting. o Inspect your compressor room to ensure all penetrations to the building are sealed. 5) PLAN AHEAD TO REOPEN o Service your dehumidifiers. o Identify and perform any necessary repairs to the building envelope. o Check your dampers for the arena exhaust fans. o Clean your arena slab to prepare for making ice. o Service the boards (repair any damage to these if necessary). o Repair any damaged tuflex; regluing is very difficult at colder temperatures, so the ideal time to do this is when the plant is shut. o Pump out, inspect and clean your snowmelt pit. Make sure the coil is in good condition. , Shutting down your plant presents an opportunity to jump in and do some ser- vicing and maintenance that would other- wise be postponed or overlooked. , Speak to your refrigerant contractors to see which of these tasks can help you not only get ready for reopening, but also pro- long the life of your equipment and ensure your plant is in the best possible condition. Brad Wilkins is the U.S. Recreation Project team lead at CIMCO Refrigeration. 40 / JULY.AUGUST.2020 USICERINKS.COM PROLONG THE LIFE OF YOUR EQUIPMENT AND SAVE MONEY IN THE LONG RUN BY PERFORMING PROPER MAINTENANCE DURING DOWNTIME.