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6369 - Overhead Door and Automatic Gate Maintenance, Repair and Replacement Services, 4.Drawings/ PlansRFP #6369 EXHIBIT 4 PREVENTIVE MAINTENANCE REQUIREMENTS RFP #6369 – Exhibit 4 Page 1 of 1 PREVENTIVE MAINTENANCE SERVICES INSPECT LUBRICATE ADJUST Rollers Hinges Counterbalance Springs Hinges Rollers Operator Limit Switches Cables Operator Operator Brakes Door Panels Operator Chain Operator Belts Operator Drive Chain / Belt Gear Boxers Operator Clutch Electrical Connections Reversing Devices Reversing Switches/ Relays Counter