الحمد لله والصلاة والسلام على رسول الله وعلى آله وصحبه أجمعين Chillers Weekly Routine work Operation and Maintenance Check and Record 1. Refrigerant level & Oil level Controller also refrigerant loss 2. Operation of chemical injection system 3. Inspect: for traces of oil on joints and flanges 4. Take samples of water from chilled water system and condenser Water System to Laboratory whose analysis and recommendations shall be kept on file in the Engineer’s Office. Based on said recommendations, the engineer will instruct the contractor accordingly. Such instructions for chemical dosing and blow down shall be strictly adhered to 5. Check Chillers for even working hours, changeover if necessary 6. Check oil heater cut-in / cut-out في أمان الله