Proposals are hereby invited for the appointment of a service provider to provide maintenance, support repairs and ad hoc replacement of the central vacuum system at ATNS Control Tower King Shaka International Airport-Fale for a period of five (5) years. Scope of works; - Monthly and 6 monthly services are required as per the service plan; - Execution and maintenance of the Central Vacuum System service plan; Machines on Ground Level: 3 Main Line: • Line 1:10 inlets; • Line 2: 5 inlets; • Line 3:14 inlets; • 2 Machines on the Tower cab level 14th Floor. Main lines: • Line 1:7 inlet; • Line 2:12 inlet. Monthly service: • Clean filters and report. • Check Inlet valves and report. • Check vacuum pipes and report. • Check vacuum flex pipes and report. • Check each inlet for operation and damage • Clean system filter • Clean system dirt canister • Check for blockages if suction power is out of specifications and clean lines to remove blockages • Check and Report hoses and all accessories replace/ repair hose or accessories. - 6 monthly service: • Clean filters and report; • Check Inlet valves and report; • Check vacuum pipes and report; • Check vacuum flex pipes and report; • Check Motor Brushes and report; • Clean Motors and check dust seals; • Clean system over roll including inlet machines; • All other manufacture recommended maintenance to be carried out; • Check, Clean and Test Suctions points (total) 25. (Ausschreibung №102117380de)