الحمد لله والصلاة والسلام على رسول الله وعلى آله وصحبه أجمعين Chillers Annual Routine work Operation and Maintenance Check and Record 1. Change oil filter, refrigerant dryer filter element, oil cooler filter element 2. Change of oil in the gearboxes if applicable 3. Change compressor oil 4. Remove end covers from evaporators and condensers, wire bruch and/or chemically clean all scales from tubes. Clean and scrape end covers and doors, paint with suitable anti corrosive paint 5. Renew zinc anodes as required if applicable 6. Renew gaskets, re-assemble, check and make leak test 7. Inspect, test, calibrate & repair or replace as necessary all main and off-season plant controls, cut-outs, safety devices pneumatic control system, pressure, temperature and level indicating and recording instruments, voltage, current indicating instruments 8. Inspect, test and repair or replace as necessary all electrical Motors, starters, overloads etc 9. Check and tighten or replace if necessary any vibration isolators 10. Clean and paint all equipment 11. Leak test of chiller 12. Check Pump down Unit 13. Clean: float chamber, orifice and strainer 14. Inspection by manufacturer’s representatives Major overhauls to be carried out to Main and off-season air conditioning plants and ancillary equipment seasonally. Main overhauls of main plants shall normally take place during the winter months and off-season plants during the summer months Rebuilding of the rotating elements can only be carried out by the Manufacturer or any other party authorized from the manufacturer في أمان الله