The Vendor is required to provide building management system (BMS) - direct digital control (DDC) systems are comprised of any and all components associated with the agency systems operation and the monitoring and control of equipment and devices associated with it.
- Where the contract stipulates calibration for a component that is able to be calibrated, a calibration sheet must be submitted for each analog point and device from the computer control system to the end device.
- The end device must function over its complete range of operation from open to close or from maximum to minimum.
- The calibration sheet must include, but not be limited to, the following data:
• Equipment description (tag no.);
• System or equipment served;
• Analog range;
• Set point;
• Calibration as found;
• Calibration as-left;
• Repeatability (over five cycles);
• Test equipment certificate; and
• Date, time, and technician signature.
- The contractor shall participate with the facility in a semi-annual review of all data recorded during the course of the preventive maintenance service visits to determine: trends in the equipment; system performance; and potential failures.
- The review will include, but shall not be limited to: system operation; system performance; sequences of operation; and corrective actions.
- The following are examples of parameters to be included in the review:
• Component and equipment failures;
• Water consumption;
• Electrical and fuel consumption;
• Pm observation notes;
• Short and long term repairs and replacements.
- Semi-annual preventive maintenance service
1. Control dampers - controlled and operated by the BMS:
• Inspect inlet guide vanes linkages, set screws and blade adjustment for proper tightness. Lubricate as required.
• Operate inlet guide vanes over full modulation range to ensure proper operation.
• Adjust as required.
• Clean all dampers.
• Inspect edge and jamb seals for damage or wear.
• Inspect damper linkages, set screws and blade adjustment for proper tightness.
• Adjust linkages for tight close-off.
• Lubricate as required.
• Operate dampers over full modulation range to ensure proper/non-binding operation.
• Clean and adjust for smooth operation, as required.
• Verify actual damper positions match displayed front-end values.
• Check position at 0%, 25%, 50%, 75% and 100% open.
• Adjust, as necessary.
• Inspect condition of damper actuator, fittings, and related tubing for leaks.
2. Control valves - controlled and operated by the BMS:
• Verify that control valves are providing tight shut-off of controlled medium.
• Inspect condition of the valve and actuator.
• Leaks are to be repaired including tightening or replacement of valve packing
• Operate control valve and actuator over full design modulation range to verify proper operation.
• Verify actual valve positions match displayed front-end values.
• Check position at 0%, 25%, 50%, 75% and 100% open.
• Adjust, as necessary.
• Verify proper operation of all pilot positioners.
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